[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.06"]
[Round "1"]
[Board "1"]
[White "Montes Orozco, Miguel Angel"]
[Black "Flores Quillas, Diego Saul Rodri"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "2097"]
[BlackElo "2414"]
[PlyCount "86"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. a4 Ngf6 5. Nc3 a6 6. Be2 b6 7. d4 cxd4 8. Qxd4
e5 9. Qe3 Bb7 10. O-O Qc7 11. Rd1 Be7 12. Nd2 Nc5 13. b3 Ne6 14. Bb2 Nd4 15. Rac1
O-O 16. Bf1 Rad8 17. Ne2 Ne6 18. c4 Ng4 19. Qg3 Nh6 20. Nc3 Bg5 21. Nd5 Qb8 22. h4
Bf4 23. Qd3 Nc5 24. Qc2 Bxd5 25. exd5 a5 26. g3 Bxd2 27. Rxd2 f5 28. Re1 f4 29. Ba3
Nf5 30. Bxc5 bxc5 31. Bh3 Nd4 32. Rxd4 cxd4 33. Be6+ Kh8 34. g4 Qb4 35. Rb1 f3 36.
Kh2 g6 37. Kg3 Rb8 38. Bd7 Rf4 39. Bb5 Rbf8 40. Rd1 Kg7 41. Bd7 Rb8 42. Bb5 Qc5 43.
Qd2 Qc8  0-1

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.06"]
[Round "1"]
[Board "2"]
[White "Sathish, Pranav"]
[Black "Seccafim, Caic Dos Santos"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2412"]
[BlackElo "2062"]
[PlyCount "132"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. Nf3 g6 2. e4 Bg7 3. d4 d6 4. Bc4 Nf6 5. Qe2 c6 6. e5 Nd5 7. h3 Nc7 8. exd6 Qxd6
9. O-O Be6 10. Nbd2 Bxc4 11. Nxc4 Qe6 12. Re1 Qxe2 13. Rxe2 Ne6 14. c3 Nd7 15. Ng5
Nxg5 16. Bxg5 f6 17. Rae1 e5 18. Bf4 O-O 19. dxe5 fxe5 20. Nxe5 Nxe5 21. Bxe5 Bxe5
22. Rxe5 Kg7 23. Rd1 Rf7 24. f3 Rc8 25. Kf2 Rcc7 26. Rd6 Rfd7 27. Ree6 Kf7 28. Rf6+
Kg7 29. h4 Re7 30. Rf4 Re5 31. Rfd4 Rce7 32. Rd7 Re2+ 33. Kg3 Kf6 34. Rf4+ Kg7 35.
Rxe7+ Rxe7 36. Re4 Rd7 37. Rd4 Re7 38. Kf4 Re2 39. Rd7+ Kf6 40. Rxb7 Rxg2 41. Rxh7
Rxb2 42. Rxa7 Rc2 43. Ra3 c5 44. Ke4 Rh2 45. Ra6+ Kf7 46. Kd5 Rxh4 47. c4 Rh5+ 48.
Kd6 Kf6 49. Ra3 g5 50. Rb3 Rh2 51. a3 Rh3 52. Kxc5 Ke5 53. Kb4 Kd4 54. a4 Rh8 55.
a5 Rb8+ 56. Ka4 Ra8 57. Rb5 Kxc4 58. Rxg5 Ra6 59. Rg4+ Kc5 60. Rg1 Rf6 61. Rc1+ Kd4
62. Kb5 Rxf3 63. a6 Rb3+ 64. Ka4 Rb2 65. Ra1 Kc4 66. a7 Kd5  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.06"]
[Round "1"]
[Board "3"]
[White "Casalaspro, Mathias Andre"]
[Black "Vazquez, Facundo"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2060"]
[BlackElo "2407"]
[PlyCount "105"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. Nc3 d5 3. Bf4 e6 4. Nb5 Bb4+ 5. c3 Ba5 6. e3 Nbd7 7. Nf3 a6 8. Na3 c6
9. Bd3 Bc7 10. O-O O-O 11. Qc2 c5 12. Bxc7 Qxc7 13. c4 cxd4 14. Nxd4 dxc4 15. Nxc4
b5 16. Nd2 Qxc2 17. Nxc2 Nc5 18. Be2 Rd8 19. Bf3 Ra7 20. Rfd1 Rad7 21. Nd4 e5 22.
Nc6 Re8 23. Nb3 Na4 24. Rdc1 Bb7 25. Nba5 e4 26. b3 Bxc6 27. Nxc6 Nb2 28. Be2 Rd2
29. Nd4 Nd5 30. Kf1 Nf4 31. Ke1 Rxe2+ 32. Nxe2 Nfd3+ 33. Kd2 Nxc1 34. Rxc1 Nd3 35.
Rc6 Ra8 36. Rd6 Nxf2 37. Ng3 Ng4 38. Nxe4 Nxh2 39. Nc5 a5 40. Nb7 Nf1+ 41. Kd3 Re8
42. Rd8 Rxd8+ 43. Nxd8 Kf8 44. Nc6 Ke8 45. Nxa5 h5 46. Nc6 g5 47. Nd4 g4 48. Nf5
Kd7 49. Ke2 Nh2 50. Kf2 Kc6 51. a4 b4 52. e4 Kc5 53. Ke2  1/2-1/2

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.06"]
[Round "1"]
[Board "4"]
[White "Oro, Faustino"]
[Black "Munoz Ramos, Christopher"]
[Result "1-0"]
[ECO "B99"]
[WhiteElo "2377"]
[BlackElo "2038"]
[PlyCount "77"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7
9. O-O-O Nbd7 10. g4 b5 11. Bxf6 Nxf6 12. g5 Nd7 13. f5 O-O 14. Rg1 Ne5 15. Qg3 b4
16. Nce2 Bd7 17. Nf4 Nc6 18. fxe6 Nxd4 19. exf7+ Rxf7 20. Rxd4 Qc5 21. Rd5 Qc6 22.
g6 hxg6 23. Nxg6 Rc8 24. Bd3 Bf6 25. Rh5 Bxb2+ 26. Kb1 Rff8 27. Ne7+ Kf7 28. Nxc6
Rxc6 29. Kxb2 Rg8 30. Rh7 Be6 31. Rxg7+ Rxg7 32. Qxg7+ Ke8 33. Qf6 Bf7 34. Rg7 Rc7
35. Qxd6 Rd7 36. Qb8+ Ke7 37. Bc4 Rd5 38. Bxd5 Kd7 39. Rxf7#  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.06"]
[Round "1"]
[Board "5"]
[White "Varillas Jimenez, Ivan"]
[Black "Schnaider, Ilan"]
[Result "1-0"]
[ECO "B99"]
[WhiteElo "1985"]
[BlackElo "2333"]
[PlyCount "123"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7
9. O-O-O Nbd7 10. g4 h6 11. Bxf6 Bxf6 12. h4 Nb6 13. g5 Bxd4 14. Rxd4 Qc5 15. Qf2
hxg5 16. e5 gxf4 17. Bd3 d5 18. Ne4 dxe4 19. Rd8+ Kxd8 20. Qxc5 Nd7 21. Qg1 exd3
22. Qxg7 Rf8 23. Rd1 Kc7 24. Rxd3 b6 25. Rc3+ Kb8 26. Rd3 Kc7 27. Qg5 Re8 28. Qxf4
Bb7 29. Qc4+ Bc6 30. Rc3 Nxe5 31. Qf4 f6 32. Qxf6 Nd7 33. Qf4+ Kb7 34. Qd6 Nc5 35.
Rg3 Rad8 36. Rg7+ Rd7 37. Rxd7+ Nxd7 38. h5 Rh8 39. Qh2 Rh6 40. Qh4 a5 41. Qg5 Rf6
42. b3 Rf7 43. Qg6 Rf1+ 44. Kb2 Rh1 45. h6 Ka6 46. Qxe6 Kb7 47. Qg6 Rh4 48. Qg7 Ka6
49. h7 Rxh7 50. Qxh7 Nc5 51. Qc7 Bb7 52. a3 Ka7 53. b4 axb4 54. axb4 Na6 55. Qd6
b5 56. c3 Nb8 57. Qc5+ Ka6 58. c4 Bc6 59. cxb5+ Bxb5 60. Qc7 Nc6 61. Kc3 Ba4 62.
Kc4  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.06"]
[Round "1"]
[Board "6"]
[White "Filgueiras, Nathan Felipe"]
[Black "Nascimento, Luiz Eduardo Da Trindade"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2323"]
[BlackElo "1877"]
[PlyCount "51"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e5 7. Nde2 Nc6 8. g4 h6
9. Bg2 b5 10. Be3 Be6 11. Ng3 g6 12. Qd2 Na5 13. b3 Rc8 14. O-O Nb7 15. Nd5 Bxd5
16. exd5 Qc7 17. Rac1 Be7 18. Bxh6 Nc5 19. Be3 Qb7 20. c4 b4 21. f4 e4 22. Bd4 Kd7
23. Rce1 Rhe8 24. g5 Nh5 25. Nxh5 gxh5 26. h4  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.06"]
[Round "1"]
[Board "7"]
[White "Lima, Carlos Eduardo I De Araujo"]
[Black "Tomiello, Lucas Costamilan"]
[Result "0-1"]
[ECO "D04"]
[WhiteElo "1857"]
[BlackElo "2279"]
[PlyCount "82"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. b3 O-O 5. Bb2 d5 6. Be2 c5 7. O-O cxd4 8. Bxd4 Nc6
9. Bb2 Qc7 10. Na3 Bf5 11. c4 dxc4 12. Nxc4 Rfd8 13. Qc1 Rac8 14. Rd1 Rxd1+ 15. Qxd1
Rd8 16. Qe1 Nd5 17. Bxg7 Kxg7 18. a3 e5 19. Rc1 f6 20. b4 Qe7 21. b5 Nb8 22. Qa5
b6 23. Qe1 Nd7 24. Nfd2 Nc5 25. Qf1 Nc7 26. Nb1 Nxb5 27. Nxe5 Qxe5 28. Bxb5 Nb3 29.
Rc3 Bxb1 30. Rxb3 Bc2 31. Rb1 Bxb1 32. Qxb1 Qf5 33. e4 Qc5 34. Kf1 Rd2 35. Be2 Rc2
36. Qb3 Qc3 37. Qd5 Rd2 38. Qb7+ Kh6 39. f3 Qe3 40. Qa6 Rb2 41. g3 b5  0-1

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.06"]
[Round "1"]
[Board "8"]
[White "Silva, Kaua Marques"]
[Black "Cahuapaza Tarapaca, Leonardo"]
[Result "1-0"]
[ECO "D40"]
[WhiteElo "2235"]
[BlackElo "1818"]
[PlyCount "201"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Nc6 7. cxd5 Nxd5 8. Bc4
Bb4 9. Qd3 O-O 10. a3 Be7 11. O-O Nxc3 12. Qxc3 Bf6 13. Rd1 Bd7 14. Qd3 Ne7 15. Ne5
Bxe5 16. dxe5 Bc6 17. Qe2 Nd5 18. Qh5 f5 19. Be3 Qe8 20. Qxe8 Rfxe8 21. Bc5 Kf7 22.
Rac1 a6 23. g3 Rac8 24. Bb3 Red8 25. Bd6 Nb6 26. Rc3 Be4 27. Rdc1 Rxc3 28. Rxc3 Rc8
29. Rxc8 Nxc8 30. Bc5 Bc6 31. Kf1 g6 32. Ke2 Ne7 33. Ke3 Nd5+ 34. Kd4 Ke8 35. Bd1
Kd7 36. h4 Nc7 37. a4 Nd5 38. b3 Ke8 39. Bd6 Kd7 40. b4 Nb6 41. a5 Nd5 42. h5 Ke8
43. Be2 Kd7 44. h6 Ke8 45. g4 Nf4 46. Bd1 Kd7 47. f3 Nd5 48. Kd3 Nf4+ 49. Ke3 Nd5+
50. Kf2 Nc3 51. Bc2 Bd5 52. Bd3 Bc6 53. Kg3 Nd5 54. Be2 Nc3 55. Bd3 Nd5 56. Bc5 Ke8
57. Bc4 Kf7 58. Kh4 Nc3 59. gxf5 gxf5 60. f4 Bf3 61. Bb3 Be2 62. Be3 Ne4 63. Bc2
Bf3 64. Bd3 Nc3 65. Bd2 Nb5 66. Bc4 Nc7 67. Kg5 Nd5 68. b5 axb5 69. Bxb5 Ne7 70.
Be3 Nc6 71. Bb6 Nb4 72. Bf1 Nd5 73. Bd4 Nb4 74. Bc3 Na6 75. Bd4 Nc7 76. Bd3 Nd5 77.
Bb6 Ne7 78. Bb5 Ng6 79. Bd8 Bd1 80. Bf6 Bf3 81. Bd8 Bd1 82. Bd7 Be2 83. Bb6 Bf3 84.
Bc5 Be2 85. Ba4 Bf3 86. Bb5 Nh8 87. Kh4 Bd5 88. Be2 Kg8 89. Kg5 Nf7+ 90. Kh5 Nd8
91. Bb6 Nf7 92. Bc7 Kh8 93. Bd6 Kg8 94. Be7 Bc6 95. Bc4 Bd7 96. Bb3 Nh8 97. Kg5 Kf7
98. Bf6 Ng6 99. Bd1 Be8 100. Bf3 Bb5 101. Bxb7  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.06"]
[Round "1"]
[Board "9"]
[White "Reyes Zavaleta, Cristhian Yamil"]
[Black "Piccoli, Lucas Fonseca"]
[Result "0-1"]
[ECO "E11"]
[WhiteElo "1804"]
[BlackElo "2225"]
[PlyCount "80"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 a5 5. Bg2 d5 6. a3 Bxd2+ 7. Nxd2 O-O 8. Ngf3
b6 9. O-O Bb7 10. Ne5 Nbd7 11. Rc1 Nxe5 12. dxe5 Nd7 13. cxd5 exd5 14. Qc2 c5 15.
Nf3 Qe7 16. Rfd1 Rab8 17. Qf5 g6 18. Qf4 d4 19. Re1 Rfe8 20. b4 axb4 21. axb4 Bxf3
22. exf3 Nxe5 23. Bf1 Qd6 24. Bb5 Re6 25. Re4 Rb7 26. Kg2 Kg7 27. h4 h5 28. Rce1
Rbe7 29. Qc1 Qd5 30. Qg5 f5 31. Rf4 Rf7 32. Ra1 c4 33. Ba6 d3 34. Bc8 Ref6 35. g4
hxg4 36. h5 Nxf3 37. h6+ Kh7 38. Rxf3 Qxf3+ 39. Kg1 g3 40. fxg3 f4  0-1

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.06"]
[Round "1"]
[Board "10"]
[White "Vasquez Vargas, Henry Richard"]
[Black "Nascimento, Nicolas Daniel Trindade"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "2216"]
[BlackElo "1797"]
[PlyCount "121"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. Nc3 d5 3. Bf4 c6 4. e3 e6 5. Bd3 Nbd7 6. Nf3 a6 7. O-O c5 8. dxc5 Nxc5
9. a3 Be7 10. b4 Nxd3 11. cxd3 O-O 12. e4 a5 13. b5 a4 14. e5 Nd7 15. Qd2 Nc5 16.
Nd4 f6 17. Rfe1 f5 18. Be3 f4 19. Bxf4 Nxd3 20. Qxd3 Rxf4 21. Nce2 Rf7 22. f4 Bc5
23. Kh1 Bd7 24. f5 Qe7 25. Rad1 Raf8 26. g4 Bc8 27. Nf4 Bxd4 28. Qxd4 Qxa3 29. Rd3
Qe7 30. Qxa4 Qh4 31. Ng2 Qf2 32. Qf4 Qxf4 33. Nxf4 exf5 34. e6 Re7 35. gxf5 Rxf5
36. Nxd5 Rxe6 37. Rxe6 Bxe6 38. Ne7+ Kf7 39. Nxf5 Bxf5 40. Rc3 h5 41. b6 Be4+ 42.
Kg1 Ke6 43. Kf2 g6 44. Ke3 Bd5 45. Kd4 Kd6 46. Rc5 Bf3 47. Rg5 Kc6 48. Rxg6+ Kb5
49. h4 Be2 50. Ke3 Bd1 51. Rh6 Kc5 52. Kf4 Kb5 53. Kg5 Kc5 54. Re6 Bg4 55. Rf6 Kb5
56. Kg6 Kc5 57. Kf7 Kb5 58. Ke7 Kc5 59. Kd8 Kb5 60. Kc7 Ka6 61. Rf1  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.06"]
[Round "1"]
[Board "11"]
[White "Da Fonseca Pinto, Joao Gabriel Alves"]
[Black "Soriano Quispe, Ivan Excender"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1762"]
[BlackElo "2214"]
[PlyCount "88"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 g6 7. Nbd2 Bg7 8. O-O O-O
9. Re1 Re8 10. Nf1 b5 11. Bc2 Bb7 12. Ng3 d5 13. a4 Qd7 14. Bd2 h6 15. h3 Kh7 16.
h4 d4 17. h5 Rad8 18. hxg6+ fxg6 19. axb5 axb5 20. Nh2 Rf8 21. Rf1 Qd6 22. Kh1 Nd7
23. Qc1 dxc3 24. bxc3 Nc5 25. Qb2 Nxd3 26. Bxd3 Qxd3 27. Rad1 Qc4 28. Ng4 Qe6 29.
Ne3 Na5 30. c4 Nxc4 31. Nxc4 Qxc4 32. Rc1 Qe6 33. Rxc7 Rd7 34. Rxd7 Qxd7 35. Bc3
h5 36. Bxe5 h4 37. Bxg7 Qxg7 38. Qxg7+ Kxg7 39. Ne2 Bxe4 40. Nc3 Bc6 41. Kg1 b4 42.
Na2 b3 43. Nb4 Be4 44. f3 b2  0-1

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.06"]
[Round "1"]
[Board "12"]
[White "Ibarra, Juan Martin"]
[Black "Errazola, Mauricio"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2213"]
[BlackElo "1725"]
[PlyCount "100"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. Nf3 Nf6 2. b3 b6 3. g3 Bb7 4. Bg2 g6 5. O-O Bg7 6. Bb2 O-O 7. c4 d6 8. d4 Nbd7
9. Nc3 e5 10. dxe5 Nxe5 11. Nxe5 Bxg2 12. Nxf7 Rxf7 13. Kxg2 Qd7 14. Qd3 Re8 15.
e4 Ng4 16. f3 Ne5 17. Qe2 Qe6 18. Rae1 h5 19. Nd5 Nd3 20. Qxd3 Bxb2 21. Nf4 Qf6 22.
e5 dxe5 23. Qxg6+ Qxg6 24. Nxg6 Kg7 25. Nf4 Kh6 26. Re2 Rd8 27. Ne6 Re8 28. Nxc7
Rxc7 29. Rxb2 e4 30. fxe4 Rxe4 31. Rf6+ Kg7 32. Rf4 Re1 33. Rd2 Rce7 34. Rd5 Ra1
35. Rf2 h4 36. gxh4 Kh6 37. Rd6+ Kh5 38. Rd5+ Kh6 39. Rg5 Re8 40. Kh3 a5 41. Rf6+
Kh7 42. Rf7+ Kh8 43. Rf2 Kh7 44. a4 Rb1 45. Rg3 Rd1 46. Rf5 Kh6 47. c5 Rd6 48. cxb6
Rxb6 49. Rxa5 Rb7 50. Ra6+ Kh7  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.06"]
[Round "1"]
[Board "13"]
[White "Nascimento, Kaio Vinicius Da Trindade"]
[Black "Labussiere, Yago"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "1310"]
[BlackElo "2185"]
[PlyCount "100"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. f4 Na6 7. Nf3 e5 8. fxe5 dxe5
9. d5 Nc5 10. Qc2 a5 11. Be3 Qe7 12. O-O-O Ng4 13. Bg1 Bh6+ 14. Kb1 Ne3 15. Bxe3
Bxe3 16. d6 Qe6 17. Nd5 Bd4 18. Nxc7 Qxd6 19. Nxa8 Be6 20. Nc7 Qxc7 21. Nxd4 exd4
22. Rxd4 Qe5 23. Rhd1 Qxh2 24. Bf3 Qe5 25. Rd8 g5 26. g4 Rxd8 27. Rxd8+ Kg7 28. b3
Qf6 29. Qb2 Qxb2+ 30. Kxb2 Kf6 31. Rg8 h6 32. Rh8 Ke5 33. Rxh6 Nxe4 34. Rh5 Nf6 35.
Rh6 Ne4 36. Rh5 Nf6 37. Rxg5+ Kf4 38. Rxa5 Kxf3 39. g5 Ne4 40. Rb5 Bc8 41. Re5 Kf4
42. Re8 Bg4 43. Re7 Nxg5 44. Rxb7 f5 45. c5 Ke5 46. Rg7 Ne6 47. Rg8 Nxc5 48. Kc3
Bf3 49. b4 Na4+ 50. Kd3 Be4+  1/2-1/2

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.06"]
[Round "1"]
[Board "14"]
[White "De Siqueira, Luigy Lira"]
[Black "Reyes Zavaleta, Sergio Gabriel"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2179"]
[BlackElo "1287"]
[PlyCount "100"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nf6 6. c3 a6 7. Be2 Be6 8. O-O Nc6
9. dxc5 Bxc5 10. Nb3 Ba7 11. Bf4 O-O 12. Qd3 Re8 13. Rad1 Qc8 14. Nfd4 Nxd4 15. Nxd4
Bxd4 16. Qxd4 Bf5 17. Bd3 Bxd3 18. Qxd3 Qc4 19. Qxc4 dxc4 20. Rfe1 Rxe1+ 21. Rxe1
Re8 22. Rd1 h6 23. Kf1 g5 24. Bg3 Ne4 25. Rd5 Nf6 26. Rd4 b5 27. f3 Re6 28. Bf2 Kf8
29. Rd8+ Ke7 30. Ra8 Nd5 31. Bc5+ Kf6 32. g3 Kg6 33. Kf2 Nf6 34. Bd4 Kg7 35. Rb8
Kg6 36. Rc8 Re8 37. Rc6 Re6 38. Rxe6 fxe6 39. Bxf6 Kxf6 40. Ke3 Ke5 41. g4 a5 42.
h3 Kd5 43. f4 gxf4+ 44. Kxf4 e5+ 45. Ke3 Ke6 46. Ke4 Kf6 47. h4 Ke6 48. g5 h5 49.
g6 Kf6 50. g7 Kxg7  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.06"]
[Round "1"]
[Board "15"]
[White "Andriska, Matheus Jose Amante"]
[Black "Ribeiro, Matheus Mendes Domingues"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1261"]
[BlackElo "2150"]
[PlyCount "88"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 c5 2. Nc3 e6 3. Bc4 Nc6 4. Nge2 Nf6 5. d3 d5 6. exd5 exd5 7. Bb3 Be7 8. O-O
O-O 9. Nf4 d4 10. Ncd5 Nxd5 11. Nxd5 Bd6 12. Bf4 Be6 13. Bxd6 Qxd6 14. Qf3 Ne5 15.
Qe4 f5 16. Ne7+ Kh8 17. Qh4 Bxb3 18. axb3 Rf7 19. f4 Qxe7 20. Qxe7 Rxe7 21. fxe5
Rxe5 22. Rf2 g6 23. g3 Kg7 24. Kg2 a5 25. Raf1 Rae8 26. Ra1 b6 27. Raf1 Re1 28. Rxe1
Rxe1 29. Kf3 Rb1 30. Kf4 Kf6 31. g4 g5+ 32. Kg3 f4+ 33. Kf3 Rxb2 34. Ke4 Ke6 35.
Re2 b5 36. Kf3+ Kd6 37. Ke4 a4 38. bxa4 bxa4 39. Kf5 a3 40. Kxg5 a2 41. Re1 Rb1 42.
Rxb1 axb1=Q 43. Kxf4 Qxc2 44. Ke4 c4  0-1

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.06"]
[Round "1"]
[Board "16"]
[White "Castro Salgado, Pablo"]
[Black "Reimberg, Arthur Bernardo"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2150"]
[BlackElo "0"]
[PlyCount "69"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. Bf4 a6 6. c5 b6 7. b4 Bb7 8. e3 Nbd7 9.
Bd3 O-O 10. O-O Re8 11. Qc2 Nf8 12. Ne5 c6 13. Na4 N8d7 14. Nxd7 Nxd7 15. Bxh7+ Kh8
16. Bd3 b5 17. Qe2 g6 18. Nb6 Nxb6 19. cxb6 Bf6 20. Qg4 Kg7 21. Bc7 Qe7 22. Qf4 e5
23. Bxe5 Bxe5 24. dxe5 Qxe5 25. Qxe5+ Rxe5 26. a4 Rc8 27. Rfc1 d4 28. axb5 cxb5 29.
Rxc8 Bxc8 30. Rc1 Re8 31. exd4 Rd8 32. f3 Be6 33. b7 Rb8 34. Rc7 Kf8 35. d5  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.06"]
[Round "1"]
[Board "17"]
[White "De Oliveira, Joao Pedro Almeida"]
[Black "Tomiello, Mateus Costamilan"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "0"]
[BlackElo "2145"]
[PlyCount "46"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 c6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Be3 cxd4 6. cxd4 Bf5 7. Bd3 Bxd3 8. Qxd3
e6 9. Ne2 Nge7 10. Ng3 h5 11. h4 Ng6 12. Nd2 Be7 13. Nf3 Nxh4 14. Nxh4 Bxh4 15. Bd2
g6 16. Bc3 Be7 17. a3 Qb6 18. b4 a6 19. Ne2 Rc8 20. Rb1 Na7 21. a4 Rc4 22. Qd2 Qc6
23. Qc2 Kd7  0-1

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.06"]
[Round "1"]
[Board "18"]
[White "Reyes Zavaleta, Fabian Ricardo"]
[Black "De Mattos, Pedro Benedito Flores"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "2122"]
[BlackElo "0"]
[PlyCount "69"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 d5 2. c4 e6 3. Nf3 Be7 4. g3 Nf6 5. Bg2 O-O 6. O-O dxc4 7. Qc2 a6 8. a4 Nc6
9. Qxc4 Qd5 10. Nbd2 Rb8 11. Qc3 Bb4 12. Qd3 Qh5 13. Nc4 Rd8 14. Bf4 Nd5 15. Bg5
Be7 16. Bxe7 Ndxe7 17. Rfd1 b6 18. Rac1 Bb7 19. e4 Rbc8 20. h3 Nb4 21. Qe3 a5 22.
Nfe5 Nec6 23. Nxc6 Nxc6 24. e5 Rb8 25. g4 Qh6 26. g5 Qh4 27. d5 exd5 28. Bxd5 g6
29. e6 Ba8 30. exf7+ Kf8 31. Bxc6 Bxc6 32. Qa3+ Kg7 33. Qc3+ Kf8 34. Qh8+ Kxf7 35.
Ne5+  1-0

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "2.1"]
[White "Flores Quilla, Diego Saul Rodrigue"]
[Black "Ibarra, Juan Martin"]
[Result "1/2-1/2"]
[ECO "B67"]
[WhiteElo "2414"]
[BlackElo "2213"]
[Annotator "Stockfish 16"]
[PlyCount "223"]
[EventDate "2023.11.06"]
[EventCountry "BRA"]

{[%evp 0,223,20,9,125,60,69,52,77,34,34,21,38,33,79,49,62,49,45,41,41,20,10,3,
31,33,33,19,24,-9,48,-18,-5,0,15,-49,-49,-31,-17,-8,5,-17,16,-6,8,8,64,64,65,
51,126,10,62,76,65,53,76,97,63,114,91,3,43,43,78,49,99,13,37,-78,-44,0,-86,-86,
-149,-149,-173,-167,-72,-99,0,0,-22,-28,76,23,12,12,12,13,79,13,42,61,13,61,13,
30,18,17,17,30,24,24,0,0,0,-9,-12,-12,-12,-28,-17,-21,0,-14,0,-19,-19,-19,-5,
-4,-3,-4,-3,-9,-4,-9,4,3,3,2,3,13,20,23,18,9,7,5,5,0,5,0,0,0,0,0,0,-328,-326,
-370,-369,-370,-363,-369,-375,-375,-375,-375,-236,-230,-225,-225,-224,-224,
-224,-224,-220,-218,-218,-218,-218,-222,-217,-217,-217,-217,-209,-209,-209,
-209,-209,-209,-209,-209,-185,-183,-185,-193,-193,-193,-193,-193,-193,-193,
-122,-123,-132,-132,-132,-132,-132,-122,-115,-122,-124,-132,-115,-147,-193,
-193,-193,-193,-193,-193,-193,-185,-178,-180,-180,-180,-178,-180,-127,-180]} 1.
e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. O-O-O
Bd7 9. f4 b5 10. Nxc6 Bxc6 11. Qe3 Be7 12. Bxf6 gxf6 $6 {Inaccuracy. Bxf6 was
best.} (12... Bxf6 13. e5) 13. Bd3 Qc7 14. f5 O-O-O 15. Rhe1 Kb8 $6 {
Inaccuracy. d5 was best.} (15... d5 16. exd5) 16. Qh3 $6 {Inaccuracy. Nd5 was
best.} (16. Nd5 exd5 17. exd5 Bxd5 18. Qxe7 Bxg2 19. Qxf6 Rhe8 20. Kb1 Bf3 21.
Rc1 Bd5 22. a3 Kb7) 16... b4 17. Nb1 d5 18. Nd2 e5 19. Kb1 Qb7 20. Qh5 $6 {
Inaccuracy. exd5 was best.} (20. exd5 Bxd5) 20... Rhg8 $6 {Inaccuracy. dxe4
was best.} (20... dxe4) 21. g3 dxe4 22. Nxe4 Rd4 23. Qxf7 Rgd8 24. Nf2 $6 {
Inaccuracy. Rc1 was best.} (24. Rc1) 24... Bf3 25. Rc1 R8d7 26. Qxh7 a5 27. Qh6
a4 28. Qe3 b3 $6 {Inaccuracy. a3 was best.} (28... a3) 29. cxb3 Bb4 30. Rc3
Bxc3 31. bxc3 R4d6 32. b4 Qc6 33. Bc2 $4 {Blunder. Be4 was best.} (33. Be4
Bxe4+ 34. Nxe4 Rd3 35. Qc5 Rd1+ 36. Rxd1 Rxd1+ 37. Kc2 Qxe4+ 38. Kxd1 Qb1+ 39.
Kd2 Qxa2+) 33... Rd2 $2 {Mistake. a3 was best.} (33... a3 34. Qc5 Qxc5 35. bxc5
Rd2 36. Nd3 R2xd3 37. Bxd3 Rxd3 38. Kc2 Rd8 39. Rb1+ Kc7 40. Rb6) 34. Kc1 $2 {
Mistake. Ne4 was best.} (34. Ne4 Bxe4 35. Bxe4 Qb5 36. a3 R7d6 37. Bc2 Qc4 38.
Qc5 Qxc5 39. bxc5 R6d5 40. h4 Rh2) 34... a3 35. Qxd2 Rxd2 36. Kxd2 Qd5+ 37. Ke3
Qxa2 38. Bb1 Qd5 39. c4 Qxc4 $4 {Blunder. Qb7 was best.} (39... Qb7 40. b5 Bg2
41. Be4 Qa7+ 42. Ke2 Bxe4 43. Nxe4 Qd4 44. Kf3 a2 45. c5 Qd3+ 46. Kg2) 40. Kxf3
Qxb4 41. Rd1 e4+ 42. Nxe4 Qb3+ 43. Ke2 Qb2+ 44. Nd2 Qb5+ 45. Kf2 Qc5+ 46. Kf3
Qc3+ 47. Ke2 Qe5+ 48. Kf3 Qc3+ 49. Ke2 Qe5+ 50. Kf3 Qc3+ 51. Kg2 Qe3 52. Kf1
Ka7 53. Ne4 a2 54. Bxa2 Qxe4 55. Bd5 Qxf5+ 56. Kg1 Qe5 57. Bg2 Kb6 58. Rf1 Kc5
59. Rf3 Qa1+ 60. Bf1 Qd4+ 61. Kg2 Qd2+ 62. Rf2 Qd5+ 63. Kg1 Qd4 64. h4 Kd6 65.
Kg2 Qe4+ 66. Kh2 Qd4 67. Rf4 Qd2+ 68. Bg2 Ke7 69. Kh3 Kf7 70. Be4 Qd1 71. Bf3
Qd7+ 72. Bg4 Qd5 73. Rf3 Kg7 74. h5 f5 75. Kh4 $4 {Blunder. Rf1 was best.} (75.
Rf1) 75... Qd8+ 76. Kh3 Qd5 $4 {Blunder. fxg4+ was best.} (76... fxg4+ 77. Kxg4
Qd1 78. Kf4 Kh6 79. g4 Qd6+ 80. Kf5 Qd2 81. Ke5 Qg5+ 82. Rf5 Qxg4 83. Rf6+) 77.
Kh4 $4 {Blunder. Rf1 was best.} (77. Rf1) 77... Qd8+ 78. Kh3 Qd1 $4 {Blunder.
fxg4+ was best.} (78... fxg4+ 79. Kxg4 Qd1 80. Kf4 Kh6 81. g4 Qd6+ 82. Kf5 Qd2
83. Kf6 Qg5+ 84. Ke6 Qxg4+ 85. Rf5) 79. Kh4 fxg4 80. Rf4 Qd8+ 81. Kxg4 Kh6 82.
Rf5 Qd1+ 83. Kf4 Qe2 84. g4 Qf2+ 85. Ke4 Qg2+ 86. Kf4 Qf2+ 87. Ke4 Qh4 88. Kf4
Qe7 $6 {Inaccuracy. Qh2+ was best.} (88... Qh2+ 89. Ke4) 89. Kf3 $6 {
Inaccuracy. Kg3 was best.} (89. Kg3 Qe1+) 89... Qa3+ $6 {Inaccuracy. Qh4 was
best.} (89... Qh4 90. Kf4) 90. Kf4 $6 {Inaccuracy. Kg2 was best.} (90. Kg2 Kg7
91. Rf3 Qc5 92. Rf5) 90... Qb4+ $6 {Inaccuracy. Qd6+ was best.} (90... Qd6+ 91.
Kf3 Qh2 92. Ke4 Qg3 93. Rf6+ Kg5 94. Rg6+ Kh4 95. Kf5 Qf3+ 96. Ke6 Qf8 97. h6)
91. Kf3 $6 {Inaccuracy. Kg3 was best.} (91. Kg3 Qe1+ 92. Kh3 Qh1+ 93. Kg3)
91... Qc3+ $6 {Inaccuracy. Qe1 was best.} (91... Qe1 92. Kg2 Qh4 93. Kf3 Qh2
94. Ke4 Qg3 95. Rf6+ Kg5 96. Rg6+ Kh4 97. Kf5 Qf3+ 98. Ke6) 92. Kf4 $6 {
Inaccuracy. Kg2 was best.} (92. Kg2 Qe3 93. Kh2 Kg7 94. Kg2 Qe2+ 95. Kg3 Qe1+
96. Kh3 Qc3+ 97. Kg2 Qe3 98. Rf3 Qe1) 92... Kg7 $6 {Inaccuracy. Qc7+ was best.}
(92... Qc7+ 93. Kf3 Qh2 94. Ke4 Qg3 95. Rf6+ Kg5 96. Rg6+ Kh4 97. Kf5 Qf3+ 98.
Ke6 Qf8 99. h6) 93. Rg5+ Kf6 94. Rg6+ Kf7 95. Kg5 Qe3+ 96. Kh4 Qe1+ 97. Kg5 Qf2
98. Kh6 Qf4+ 99. Kh7 Qe4 100. Kh6 Qe5 101. Kh7 Qe4 102. Kh6 Qd4 103. Kh7 Qe5
104. Kh6 Qh8+ 105. Kg5 Qe5+ 106. Kh6 Qh8+ 107. Kg5 Qd8+ 108. Kh6 Qh8+ 109. Kg5
Ke7 110. Kf5 Qh7 111. Kg5 Qf7 112. Kh6 1/2-1/2

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "2.2"]
[White "Quispe, Ivan Excender Soria"]
[Black "Sathish, Pranav"]
[Result "1-0"]
[ECO "A88"]
[WhiteElo "2214"]
[BlackElo "2412"]
[Annotator "Stockfish 16"]
[PlyCount "53"]
[EventDate "2023.11.06"]
[EventCountry "BRA"]

{[%evp 0,53,20,20,56,63,74,44,78,81,60,51,58,58,42,32,72,52,35,25,58,18,14,-29,
-6,-26,-4,-6,92,70,92,42,53,53,65,89,96,96,102,66,81,110,116,136,118,118,125,
122,442,551,877,878,857,908,29993,29994]} 1. d4 f5 $6 {Inaccuracy. Nf6 was
best.} (1... Nf6 2. c4 e6 3. Nf3 d5 4. cxd5 exd5 5. Bf4 c6 6. Nc3) 2. Nf3 Nf6
3. c4 g6 4. g3 Bg7 5. Bg2 O-O 6. O-O d6 7. Nc3 c6 8. Qc2 Na6 9. a3 Qe8 10. b4
e5 11. e3 Be6 $6 {Inaccuracy. e4 was best.} (11... e4 12. Nd2 Bd7 13. Rb1 Rc8
14. a4 b5 15. d5 cxd5 16. Nxb5 Bxb5 17. axb5 Nc7 18. Bb2) 12. dxe5 dxe5 13.
Nxe5 Nh5 14. f4 Bxe5 15. fxe5 Bxc4 16. Ne2 Bxe2 17. Qxe2 Qxe5 $6 {Inaccuracy.
Nc7 was best.} (17... Nc7 18. Qa2+) 18. Bb2 Qe6 19. Qd2 Nf6 $2 {Mistake. Nc7
was best.} (19... Nc7 20. e4) 20. Qc3 $2 {Mistake. e4 was best.} (20. e4 Qd7
21. Qc3 Nc7 22. Rad1 Qf7 23. exf5 g5 24. Rd6 Nce8 25. Re6 Rd8 26. Rfe1 Qd7)
20... Nc7 21. e4 Nb5 22. exf5 gxf5 23. Qd2 Ne4 $4 {Blunder. Ng4 was best.} (
23... Ng4 24. Rae1 Qh6 25. Qxh6 Nxh6 26. Re7 Rf7 27. Re6 Ng4 28. h3 Nc7 29. Re2
Nf6 30. Rxf5) 24. Bxe4 fxe4 25. Qg5+ Qg6 26. Qe5 Rxf1+ $4 {Checkmate is now
unavoidable. Rf3 was best.} (26... Rf3 27. Qh8+ Kf7 28. Qxa8 Nd6 29. Qd8 Qe6
30. Rae1 Rf5 31. Rd1 Ne8 32. Rxf5+ Qxf5 33. Rd7+) 27. Rxf1 1-0

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "2.3"]
[White "De Siqueira, Luigy Lira"]
[Black "Oro, Faustino"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "2179"]
[BlackElo "2377"]
[Annotator "Stockfish 16"]
[PlyCount "87"]
[EventDate "2023.11.06"]
[EventCountry "BRA"]

{[%evp 0,87,20,19,19,19,24,5,1,2,29,34,49,49,43,24,24,22,29,66,33,30,33,13,24,
18,27,27,27,27,54,52,6,-48,-17,-39,-39,-47,-31,-95,-104,-104,-122,-124,0,-68,
-77,-60,-61,-74,-60,-92,-103,-99,-75,-111,-80,-129,-90,-105,-103,-134,-138,
-121,-108,-108,-105,-101,-108,-133,-99,-136,-96,-102,-82,-147,-118,-163,-160,
-175,14,22,28,28,28,28,34,57,66,66]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5
5. Be3 Qf6 6. c3 Nge7 7. Bc4 b6 8. O-O Bb7 9. Nb3 Ne5 10. Nxc5 bxc5 11. Nd2 $6
{Inaccuracy. Bb3 was best.} (11. Bb3 Bxe4) 11... Nxc4 12. Nxc4 Ba6 13. b3 Bxc4
14. bxc4 Qc6 15. Qg4 Ng6 16. Rad1 d6 17. Rd5 $6 {Inaccuracy. f4 was best.} (17.
f4 Qxe4 18. Bxc5 O-O 19. Bd4 c5 20. Rfe1 Qc2 21. Bf2 Rae8 22. h4 h5 23. Qg5 Re6
) 17... O-O 18. f4 Rfe8 $6 {Inaccuracy. f6 was best.} (18... f6) 19. Qf3 Nh4
20. Qh3 $6 {Inaccuracy. Qg3 was best.} (20. Qg3 Rxe4 21. Bxc5 Rxc4 22. Bd4 Rxd4
23. Rxd4 Nf5 24. Qf3 Nxd4 25. cxd4 d5 26. Re1 Re8) 20... Rxe4 21. Bc1 Rxc4 $4 {
Blunder. Ng6 was best.} (21... Ng6 22. f5 Ne5 23. f6 Qa4 24. fxg7 Qxc4 25. Rdd1
Re8 26. Bg5 Ng4 27. Rb1 a5 28. Qf3) 22. Rh5 $2 {Mistake. Rg5 was best.} (22.
Rg5 Ng6 23. f5 Re8 24. fxg6 hxg6 25. a3 Re2 26. Rg4 Qd5 27. Rg3 Qe6 28. Qxe6
Rxe6) 22... Qxg2+ 23. Qxg2 Nxg2 24. Kxg2 Rxc3 25. Rd5 Re8 26. Rd2 Kf8 27. Kf2
$6 {Inaccuracy. f5 was best.} (27. f5 f6) 27... f6 28. Rg1 Kf7 29. Rgd1 $6 {
Inaccuracy. Rb2 was best.} (29. Rb2 Re7 30. Bd2 Rh3 31. Kg2 Ra3 32. Kf2 Ra4 33.
Rc2 Ke6 34. h4 Kd5 35. h5 Kc6) 29... Rb8 30. Bb2 Rc4 31. Kg3 Rbb4 32. Rf2 Re4
33. Rd3 Ke6 34. h3 Ra4 35. a3 $6 {Inaccuracy. f5+ was best.} (35. f5+ Kd7 36.
a3 Kc6 37. Rg2 d5 38. Kf3 Rf4+ 39. Ke2 Rae4+ 40. Re3 d4 41. Rxe4 Rxe4+) 35...
Re1 $6 {Inaccuracy. d5 was best.} (35... d5 36. f5+ Kd6 37. Kf3 Rac4 38. Re3
Rf4+ 39. Kg3 Rxf2 40. Re6+ Kd7 41. Kxf2 Rf4+ 42. Kg2) 36. Kg2 Ree4 $6 {
Inaccuracy. Kf5 was best.} (36... Kf5 37. Rb3 Rxf4 38. Rc2 Re7 39. Rb7 a6 40.
Ra7 Ra4 41. Kf1 Rh4 42. Rxa6 Rxh3 43. a4) 37. Kg3 $4 {Blunder. f5+ was best.} (
37. f5+ Kf7) 37... c4 $6 {Inaccuracy. d5 was best.} (37... d5 38. f5+ Kd6 39.
Rfd2 d4 40. Kg2 Kd5 41. Rg3 Re7 42. Rb3 Re5 43. Rb8 Rxf5 44. Rd8+) 38. Rc3 $2 {
Mistake. f5+ was best.} (38. f5+ Kd7) 38... d5 39. Rfc2 d4 $4 {Blunder. c5 was
best.} (39... c5 40. Kf3 Ra5 41. Bc1 Rb5 42. a4 Rb1 43. Be3 Kd6 44. Bf2 Re7 45.
Kg4 Reb7 46. h4) 40. Rxc4 Rxc4 41. Rxc4 Re3+ 42. Kf2 Rxh3 43. Bxd4 Rxa3 44.
Rxc7 1/2-1/2

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "2.4"]
[White "Domingues Ribeiro, Matheus Mendes"]
[Black "Filgueiras, Nathan Felipe"]
[Result "1/2-1/2"]
[ECO "E18"]
[WhiteElo "2150"]
[BlackElo "2323"]
[Annotator "Stockfish 16"]
[PlyCount "59"]
[EventDate "2023.11.06"]
[EventCountry "BRA"]

{[%evp 0,59,20,-4,17,25,45,37,21,17,19,25,15,13,11,11,23,-2,3,-4,14,17,13,9,7,
-7,-1,-15,-16,-40,-40,-40,-29,-29,-29,-29,-29,-29,-10,-22,-11,-23,-14,0,8,8,26,
25,35,33,25,13,0,0,21,13,22,15,0,15,20,15]} 1. c4 b6 2. Nf3 Bb7 3. Nc3 Nf6 4.
g3 e6 5. Bg2 Be7 6. O-O O-O 7. d4 Ne4 8. Bd2 d5 9. Qc2 Nd7 10. cxd5 exd5 11.
Bf4 c5 12. Nxe4 dxe4 13. Nd2 cxd4 14. Nxe4 Rc8 15. Qd3 Nc5 16. Nxc5 Bxg2 17.
Kxg2 bxc5 18. b3 Bf6 19. Rac1 Re8 20. Rc2 Qe7 21. Rfc1 h6 22. Qf3 a5 23. h4 Be5
24. Bxe5 $6 {Inaccuracy. Bd2 was best.} (24. Bd2) 24... Qxe5 25. Qf4 Qd5+ 26.
Qf3 Qd6 27. Qf5 g6 28. Qf4 Qd5+ 29. Qf3 Qe5 30. Qf4 1/2-1/2

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "2.5"]
[White "Tomiello, Lucas Costamilan"]
[Black "Salgado, Pablo Castro"]
[Result "0-1"]
[ECO "C26"]
[WhiteElo "2279"]
[BlackElo "2150"]
[Annotator "Stockfish 16"]
[PlyCount "108"]
[EventDate "2023.11.06"]
[EventCountry "BRA"]

{[%evp 0,108,20,19,24,14,14,-13,22,17,42,7,40,29,24,6,55,43,34,34,34,76,32,34,
38,48,65,0,0,0,0,0,0,0,8,18,10,6,6,-26,-50,-28,11,0,-11,-31,0,-45,-3,-18,-28,
-43,-1,-67,-64,-128,-113,-115,-123,-123,-126,-124,-124,-124,-125,-137,-140,
-138,-138,-135,-136,-258,-137,-139,-128,-148,-125,-146,-154,-175,-165,-184,
-165,-218,-195,-236,-273,-242,-148,-148,-148,-148,-201,-198,-280,-335,-335,
-365,-387,-436,-387,-387,-395,-519,-539,-558,-556,-724,-715,-976,-760]} 1. e4
e5 2. Bc4 Nf6 3. d3 Bc5 4. Nc3 c6 5. Nf3 d6 6. Be3 Bxe3 7. fxe3 Ng4 8. Qe2 Qb6
9. Ng5 O-O $6 {Inaccuracy. d5 was best.} (9... d5 10. exd5 Nxe3 11. d6 O-O 12.
Qh5 Nxg2+ 13. Kf1 Ne3+ 14. Ke1 Ng2+ 15. Kf1) 10. O-O Qxe3+ 11. Qxe3 Nxe3 12.
Bxf7+ Kh8 13. Rf3 Nxc2 14. Raf1 Nd4 15. R3f2 Nd7 16. Bc4 Rxf2 17. Rxf2 h6 18.
Nf7+ Kh7 19. Nxd6 b5 20. Bf7 a5 21. Ne2 Ba6 22. Nxd4 exd4 23. Be8 Rd8 24. Bxd7
Rxd7 25. e5 c5 26. b3 $4 {Blunder. Ne4 was best.} (26. Ne4 Rd5 27. Rf6 Bc8 28.
Rc6 Bf5 29. Nxc5 Rxe5 30. Kf2 b4 31. a3 bxa3 32. bxa3 Re3) 26... Re7 $6 {
Inaccuracy. b4 was best.} (26... b4) 27. Rf8 $2 {Mistake. Re2 was best.} (27.
Re2 b4) 27... b4 28. Nc4 Bxc4 29. bxc4 $6 {Inaccuracy. dxc4 was best.} (29.
dxc4 Rxe5 30. Kf2 Kg6 31. Ra8 Kf5 32. Rf8+ Kg4 33. h3+ Kh4 34. Kf3 Kg5 35. Rc8
Re3+) 29... a4 30. Ra8 a3 31. Ra5 Rxe5 32. Kf2 Kg6 33. Rb5 Kf5 34. Ra5 h5 35.
Ra7 g6 36. Rc7 Kf4 37. Rc6 Kf5 38. h4 g5 39. hxg5 Kxg5 40. Rc8 Kf6 41. Rc6+ Ke7
42. Rc7+ Kd6 43. Rh7 Kc6 44. Rh6+ Kb7 45. Rh7+ Ka6 46. Rh6+ Ka5 47. Rh8 Re3 48.
Rxh5 Rxd3 49. Ke2 Rg3 50. Rxc5+ Ka4 51. Rc8 Rxg2+ 52. Kd3 Rxa2 53. Kxd4 Kb3 54.
c5 Rd2+ 0-1

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "2.6"]
[White "Tomiello, Mateus Costamilan"]
[Black "Silva, Kaua Marques"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "2145"]
[BlackElo "2235"]
[Annotator "Stockfish 16"]
[PlyCount "89"]
[EventDate "2023.11.06"]
[EventCountry "BRA"]

{[%evp 0,89,20,-4,39,20,26,-8,27,17,8,-28,13,6,6,8,6,25,24,48,23,21,70,77,69,
65,65,56,51,21,42,16,68,62,62,29,101,52,69,71,65,65,65,73,49,50,62,17,14,8,67,
26,64,39,77,127,127,75,75,87,151,143,194,180,190,180,210,218,215,209,215,197,
469,476,484,337,338,349,345,353,369,374,419,444,544,543,564,604,765,634,699,
872]} 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 e5 6. Nge2 d6 7. O-O Be6 8.
d3 Nge7 9. Nd5 O-O 10. a3 a5 11. Nec3 Rb8 12. Rb1 b6 13. Bd2 Qd7 14. b4 $6 {
Inaccuracy. Qa4 was best.} (14. Qa4) 14... axb4 15. axb4 cxb4 $6 {Inaccuracy.
Nxb4 was best.} (15... Nxb4) 16. Nb5 Rfd8 $6 {Inaccuracy. Bxd5 was best.} (
16... Bxd5) 17. e4 $6 {Inaccuracy. Bxb4 was best.} (17. Bxb4 Nxb4 18. Rxb4 Bxd5
19. cxd5 Rdc8 20. h4 h5 21. Kh2 Qd8 22. Qb3 Ra8 23. Rb1 Ra5) 17... Na7 $6 {
Inaccuracy. Bg4 was best.} (17... Bg4 18. f3 Be6 19. Be3 Na7 20. Nxa7 Qxa7 21.
Nxb4 Rdc8 22. Rf2 Qd7 23. Nd5 Nxd5 24. cxd5) 18. Rxb4 $2 {Mistake. Nxa7 was
best.} (18. Nxa7 Qxa7 19. Bg5 Bxd5 20. cxd5 Qd7 21. h4 h6 22. Be3 h5 23. Kh2 b5
24. Bh3 Qe8) 18... Nec6 19. Rb1 Nxb5 20. Rxb5 Bxd5 21. Rxd5 b5 22. Bg5 Re8 23.
Qd2 Nd4 24. c5 Bf8 25. Be3 Ne6 $6 {Inaccuracy. b4 was best.} (25... b4 26. Rb1
b3 27. Bxd4 exd4 28. Bf3 Re5 29. Rxe5 dxe5 30. Bd1 b2 31. Rxb2 Rxb2 32. Qxb2)
26. Bh3 $6 {Inaccuracy. Rc1 was best.} (26. Rc1 Rec8 27. Bh3 b4 28. Rb1 Qc7 29.
Rxb4 dxc5 30. Ra4 Qc6 31. Rc4 Rd8 32. Rxe5 Bg7) 26... Qc7 $4 {Blunder. Qc6 was
best.} (26... Qc6 27. cxd6 Bxd6 28. Qa5 Nd4 29. Bxd4 exd4 30. Qa7 Red8 31. Qxd4
b4 32. e5 Be7 33. Bd7) 27. cxd6 Bxd6 28. Rc1 Qe7 29. Rc6 Bb4 $6 {Inaccuracy.
Bc7 was best.} (29... Bc7) 30. Qb2 $6 {Inaccuracy. Qc2 was best.} (30. Qc2 Ng5
31. Bg2 Ba3 32. h4 Ne6 33. Bh3 Qf6 34. Bxe6 Rxe6 35. Rc8+ Re8 36. Rxe8+ Rxe8)
30... Nd8 $4 {Blunder. Nf8 was best.} (30... Nf8) 31. Rb6 Rxb6 32. Bxb6 Nc6 33.
Bd7 Rb8 34. Bxc6 Rxb6 35. Rxe5 Qa7 $6 {Inaccuracy. Bc3 was best.} (35... Bc3
36. Qxc3 Rxc6 37. Qb2 Qf6 38. Rxb5 Qxb2 39. Rxb2 Rc1+ 40. Kg2 Rd1 41. Rb3 g5
42. Rb5) 36. Re8+ Bf8 37. Qb4 Qa1+ 38. Kg2 Qg7 39. Qc5 Ra6 40. Bxb5 Re6 41. Ra8
h5 42. Bc4 Rf6 43. h4 Qh6 44. f4 Qg7 45. d4 1-0

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "2.7"]
[White "Piccoli, Lucas Fonseca"]
[Black "Reyes Zavaleta, Fabian Ricardo"]
[Result "0-1"]
[ECO "B85"]
[WhiteElo "2225"]
[BlackElo "2122"]
[PlyCount "102"]
[EventDate "2023.11.06"]
[EventCountry "BRA"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be2 a6 7. O-O Be7 8. f4
O-O 9. Be3 Nc6 10. Kh1 Qc7 11. Qe1 Nxd4 12. Bxd4 b5 13. a3 Bb7 14. Qg3 Bc6 15.
Rae1 Rab8 16. e5 Ne8 17. Bd3 b4 18. Nd1 bxa3 19. bxa3 Bb5 20. Nf2 Bxd3 21. cxd3
dxe5 22. Bxe5 Bd6 23. Ne4 f6 24. Rc1 Qe7 25. Ba1 Bxa3 26. Rc6 Nd6 27. Nxf6+
Rxf6 28. Bxf6 Qxf6 29. Rxa6 Bc5 30. Rc6 Nf5 31. Qe1 Rb1 32. Rc8+ Kf7 33. Rc7+
Ke8 34. Rxc5 Rxe1 35. Rxe1 Kd7 36. Rce5 Qh6 37. d4 Nxd4 38. R5e4 Nf5 39. Ra4
Ne7 40. Ra7+ Ke8 41. h3 Qf6 42. Re4 Kf7 43. Ra6 Nd5 44. Ra7+ Kg6 45. Ra6 Nxf4
46. g3 Qf5 47. Rxf4 Qxh3+ 48. Kg1 Qxg3+ 49. Kh1 Qxf4 50. Rxe6+ Kf5 51. Re2 Qf1+
0-1

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "2.8"]
[White "Varillas Jimenez, Ivan"]
[Black "Vasquez Vargas, Henry Richard"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "1985"]
[BlackElo "2216"]
[PlyCount "113"]
[EventDate "2023.11.06"]
[EventCountry "BRA"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Qc7 6. c4 Nf6 7. O-O Nc6 8. Nb3
Ne5 9. Qe2 d6 10. Nc3 Be7 11. f4 Nxd3 12. Qxd3 O-O 13. Be3 b6 14. Rac1 Bb7 15.
Nd4 Rfe8 16. h3 Rac8 17. b3 Qb8 18. f5 Bf8 19. fxe6 fxe6 20. Nf3 Nd7 21. Bf2
Bc6 22. Nd4 Ba8 23. h4 Ne5 24. Qh3 Bc6 25. a4 Bd7 26. Rcd1 Qb7 27. Qg3 Be7 28.
Be3 Kh8 29. Kh1 Qc7 30. Rd2 Qd8 31. Bg5 Bxg5 32. hxg5 Qe7 33. Nf3 Rf8 34. Rfd1
Nxf3 35. gxf3 d5 36. exd5 Rf5 37. Ne4 Rcf8 38. Rd3 exd5 39. cxd5 Rxf3 40. Rxf3
Qxe4 41. Rdd3 Kg8 42. Kh2 Rc8 43. Rd2 Qg6 44. Kg2 Bf5 45. Kg1 Be4 46. Rf1 h5
47. d6 Bc6 48. Qf4 Bd7 49. Qe5 Re8 50. Qd5+ Kh7 51. Rg2 Bh3 52. d7 Bxg2 53.
Kxg2 Rd8 54. Rf7 Qc2+ 55. Kg3 Kg6 56. Qe6+ Kh7 57. Qh6+ 1-0

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "2.9"]
[White "Vazquez, Facundo"]
[Black "Nascimento, Kaio Vinicius Da Tr"]
[Result "1-0"]
[ECO "E16"]
[WhiteElo "2407"]
[BlackElo "1310"]
[PlyCount "61"]
[EventDate "2023.11.06"]
[EventCountry "BRA"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 b6 5. Bg2 Bb7 6. cxd5 exd5 7. Ne5 Bd6 8. Nc3
O-O 9. Bg5 Be7 10. O-O Ne4 11. Bxe7 Qxe7 12. Nxe4 dxe4 13. Qc2 f5 14. f3 e3 15.
Qb3+ Kh8 16. Qxe3 Nc6 17. f4 Rae8 18. Rfd1 Nxe5 19. dxe5 Bxg2 20. Kxg2 g5 21.
Rac1 c5 22. Qf3 Qf7 23. b3 g4 24. Qc6 Qh5 25. Rd6 Rc8 26. Qd5 Qe8 27. Rd7 Rd8
28. Rd1 Rxd7 29. Qxd7 Qa8+ 30. Kf2 Qe4 31. Qe7 1-0

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "2.10"]
[White "Labussiere, Yago"]
[Black "Casalaspro, Mathias Andre"]
[Result "1/2-1/2"]
[ECO "E94"]
[WhiteElo "2185"]
[BlackElo "2060"]
[PlyCount "142"]
[EventDate "2023.11.06"]
[EventCountry "BRA"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Be2 O-O 6. Nf3 Nbd7 7. O-O e5 8. Qc2
Qe7 9. Be3 c6 10. d5 c5 11. Nh4 Kh8 12. g3 Ng8 13. Bd3 Ndf6 14. f3 Bh6 15. Nd1
Nh5 16. Qd2 Bxe3+ 17. Nxe3 Ng7 18. Rae1 Qd8 19. Qc3 Bh3 20. Rf2 Rc8 21. Nhg2 f5
22. exf5 gxf5 23. f4 e4 24. Bf1 Bxg2 25. Bxg2 Qf6 26. Qxf6 Rxf6 27. Rb1 h5 28.
Bf1 Nh6 29. h3 Rg6 30. Kh2 Kg8 31. Be2 Kf7 32. b4 cxb4 33. Rxb4 b6 34. a4 Rc5
35. Rb5 Ng8 36. Rf1 Ne7 37. Ra1 Rxb5 38. axb5 Nc8 39. Nc2 Kf8 40. Nd4 Rf6 41.
Nc6 Rf7 42. Kg2 Kg8 43. Kf2 Kh7 44. Ke3 Kh6 45. g4 h4 46. Nd4 Ne7 47. Rg1 Rf8
48. Ra1 Rf7 49. Nc6 Nc8 50. Ra3 Kg6 51. Ra2 Kf6 52. Ra1 Kg6 53. Bd1 Kh7 54. Bc2
Kh6 55. Ra2 Kg6 56. Bb1 Kh6 57. Bc2 Kg6 58. Ra1 Kh6 59. Bd1 Kg6 60. Be2 Kh6 61.
Nd4 Ne7 62. Nc6 Nc8 63. Bd1 Kg6 64. Nd4 Ne7 65. Be2 Kh6 66. Rg1 Rf8 67. Rd1 Kg6
68. Nc6 Nc8 69. Nd4 Ne7 70. Rd2 Rf7 71. Rd1 Rf8 1/2-1/2

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "2.11"]
[White "Schnaider, Ilan"]
[Black "Nascimento, Nicolas Daniel Trin"]
[Result "1/2-1/2"]
[ECO "C43"]
[WhiteElo "2333"]
[BlackElo "1797"]
[PlyCount "126"]
[EventDate "2023.11.06"]
[EventCountry "BRA"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Bd6 6. O-O O-O 7. c4 c6 8. Nc3
Nxc3 9. bxc3 dxc4 10. Nxc4 Be7 11. Bf4 Be6 12. Qb1 g6 13. Qxb7 Nd7 14. Ne5 Nxe5
15. Bxe5 Bd6 16. Rae1 Bxe5 17. Rxe5 Qb6 18. Qe7 Bxa2 19. h4 Qd8 20. Qa3 Bd5 21.
Rg5 Re8 22. Qc1 h6 23. Rg4 h5 24. Rg5 Be4 25. Bc4 Bd5 26. Bxd5 cxd5 27. Qd1 Qc7
28. Qf3 Rac8 29. Qxd5 Re6 30. Rg3 Rd8 31. Qg5 Rde8 32. f4 Re3 33. Rxe3 Rxe3 34.
f5 Rg3 35. Qf6 Rh3 36. Qe5 Qxe5 37. dxe5 Rxc3 38. fxg6 fxg6 39. Rf6 Kg7 40. Ra6
Rc5 41. Rxa7+ Kf8 42. Ra6 Rxe5 43. Rxg6 Kf7 44. Rg3 Re4 45. Rf3+ Kg6 46. g3 Re2
47. Kf1 Ra2 48. Rf2 Ra3 49. Kg2 Rb3 50. Ra2 Rc3 51. Ra6+ Kg7 52. Re6 Rb3 53.
Kf2 Ra3 54. Re3 Ra5 55. Kf3 Rb5 56. Kf4 Kf6 57. Re4 Rb3 58. Rc4 Rb6 59. Rc5
Rb4+ 60. Kf3 Rb3+ 61. Kg2 Rb2+ 62. Kh3 Kg6 63. Rc6+ Kg7 1/2-1/2

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "2.12"]
[White "Errazola, Mauricio"]
[Black "Montes Orozco, Miguel Angel"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "1725"]
[BlackElo "2097"]
[PlyCount "50"]
[EventDate "2023.11.06"]
[EventCountry "BRA"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. cxd5 exd5 5. Bf4 Nf6 6. e3 Bf5 7. Bd3 Bxd3 8.
Qxd3 Be7 9. h3 O-O 10. Nge2 Re8 11. f3 Nbd7 12. e4 dxe4 13. fxe4 Nc5 14. Qf3
Ncxe4 15. Nxe4 Nxe4 16. O-O Bf6 17. Rad1 Qb6 18. Kh1 Rad8 19. Be5 Rxe5 20. dxe5
Rxd1 21. Rxd1 Nf2+ 22. Kh2 Bxe5+ 23. Ng3 Nxd1 24. Qxd1 g6 25. Qd7 Qf2 0-1

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "2.13"]
[White "Seccafim, Caic Dos Santos"]
[Black "Da Fonseca Pinto, Joao Gabriel Alves"]
[Result "0-1"]
[ECO "C47"]
[WhiteElo "2062"]
[BlackElo "1762"]
[PlyCount "140"]
[EventDate "2023.11.06"]
[EventCountry "BRA"]

1. e4 e5 2. Nc3 Nf6 3. g3 d5 4. exd5 Nxd5 5. Bg2 Nxc3 6. bxc3 Bd6 7. Nf3 O-O 8.
O-O Nc6 9. Rb1 Rb8 10. d4 exd4 11. cxd4 Bg4 12. Qd3 h6 13. Bb2 Re8 14. c4 Qd7
15. Qc3 Bb4 16. Qb3 Bf8 17. d5 Na5 18. Qc3 Qa4 19. Rbc1 b6 20. Ne5 Bh5 21. Be4
f6 22. Qd3 fxe5 23. f4 Bc5+ 24. Kh1 Bd4 25. Bxd4 exd4 26. Qxd4 Qd7 27. Bc2 Be2
28. Rf2 Bxc4 29. Rd1 Rbd8 30. Qc3 Bxd5+ 31. Kg1 Qc6 32. Qb2 Nc4 33. Qb1 Kh8 34.
Bg6 Re6 35. Bf5 Red6 36. Re1 Bf3 37. Qb4 Rd1 38. Bc2 Rxe1+ 39. Qxe1 Re8 40. Qc3
b5 41. Qxf3 Re1+ 42. Kg2 Ne3+ 43. Kh3 Qxf3 44. Rxf3 Nxc2 45. Rc3 Re2 46. Rxc7
a5 47. Kg4 Kg8 48. Rc5 Nd4 49. Rd5 Rxa2 50. Rxd4 b4 51. Kf5 Rc2 52. Rd8+ Kf7
53. Rd7+ Kf8 54. Ra7 Rc5+ 55. Kg6 Rb5 56. Ra8+ Ke7 57. Ra7+ Kd6 58. Ra8 b3 59.
f5 b2 60. Rd8+ Ke7 61. Rd1 b1=Q 62. Rxb1 Rxb1 63. Kxg7 Rb6 64. g4 a4 65. h4 a3
66. g5 hxg5 67. hxg5 a2 68. f6+ Kd6 69. f7 a1=Q+ 70. Kh7 Rb8 0-1

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "2.14"]
[White "Munoz Ramos, Christopher"]
[Black "Reyes Zavaleta, Sergio Gabriel"]
[Result "1-0"]
[ECO "D45"]
[WhiteElo "2038"]
[BlackElo "1287"]
[PlyCount "89"]
[EventDate "2023.11.06"]
[EventCountry "BRA"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 dxc4 6. Bxc4 b5 7. Bd3 a5 8. O-O
Bb7 9. Qc2 Nbd7 10. e4 Be7 11. e5 Nd5 12. Nxd5 exd5 13. Bxh7 Nf8 14. Bf5 g6 15.
Bg4 Ra6 16. Bf4 Bc8 17. Bxc8 Qxc8 18. Qd3 Qg4 19. Bg3 Ne6 20. a4 Rb6 21. axb5
Rxb5 22. Rfc1 O-O 23. h3 Qe4 24. Qc3 Rc8 25. Re1 Bb4 26. Rxe4 Bxc3 27. Rg4 Bxb2
28. Ra2 Bc3 29. Bh4 Rb4 30. Bf6 Nxd4 31. Nxd4 Rxd4 32. f4 Kf8 33. Rh4 Ke8 34.
Rh8+ Kd7 35. e6+ Kxe6 36. Rxc8 Rd1+ 37. Kh2 Bxf6 38. Rxc6+ Ke7 39. Re2+ Kf8 40.
Rxf6 Rd4 41. Ra6 Kg7 42. Rd6 a4 43. Ra2 Kf8 44. f5 Ke7 45. fxg6 1-0

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "2.15"]
[White "Nascimento, Luiz Eduardo Da Tri"]
[Black "Andriska, Matheus Jose Amante"]
[Result "1-0"]
[ECO "C65"]
[WhiteElo "1877"]
[BlackElo "1261"]
[PlyCount "101"]
[EventDate "2023.11.06"]
[EventCountry "BRA"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Be7 5. O-O O-O 6. Bxc6 dxc6 7. Nxe5 h6 8.
Be3 Bd7 9. c4 Re8 10. Qb3 b6 11. Nc3 c5 12. Rad1 Bf8 13. Nxd7 Qxd7 14. h3 Rad8
15. d4 Nxe4 16. Nxe4 Rxe4 17. dxc5 Qc8 18. Rxd8 Qxd8 19. cxb6 cxb6 20. Rd1 Qf6
21. Qd3 Re8 22. Bd4 Qd6 23. Be3 Qf6 24. Qd4 Qc6 25. Qd7 Qxd7 26. Rxd7 Re7 27.
Rd8 Rc7 28. Bf4 Re7 29. Bd6 Re1+ 30. Kh2 Rd1 31. Rxf8+ Kh7 32. Ba3 Rd2 33. Rxf7
Rd4 34. Rxa7 Rxc4 35. Bf8 Rf4 36. Bxg7 Rc4 37. Bd4+ Kg6 38. Bxb6 Rb4 39. Ra6
Kf7 40. b3 Re4 41. Be3 h5 42. Rh6 Re5 43. g4 hxg4 44. hxg4 Ra5 45. a4 Re5 46.
Rh7+ Kg6 47. Rg7+ Kxg7 48. Bd4 Kg6 49. Bxe5 Kg5 50. Kg3 Kg6 51. f4 1-0

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "2.16"]
[White "Reimberg, Arthur Bernardo"]
[Black "Lima, Carlos Eduardo I De"]
[Result "0-1"]
[ECO "B84"]
[BlackElo "1857"]
[PlyCount "49"]
[EventDate "2023.11.06"]
[EventCountry "BRA"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 d6 6. Be2 Be7 7. O-O a6 8. Be3
Nf6 9. Qd2 h5 10. Rad1 Qc7 11. f4 Nxd4 12. Bxd4 e5 13. Be3 Bd7 14. Kh1 Bc6 15.
Nd5 Bxd5 16. exd5 O-O 17. c4 Rab8 18. b4 Ng4 19. Bxg4 hxg4 20. fxe5 g3 21. h3
dxe5 22. Rxf7 Bxb4 23. Rxc7 Bxd2 24. Bb6 Rf6 25. c5 0-1

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "2.17"]
[White "Cahuapaza Tarapaca, Leonardo"]
[Black "De Oliveira, Joao Pedro Almeida"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "1818"]
[PlyCount "83"]
[EventDate "2023.11.06"]
[EventCountry "BRA"]

1. d4 g6 2. Nf3 Bg7 3. Bf4 Nf6 4. e3 d6 5. h3 Nbd7 6. Bh2 b6 7. Be2 Bb7 8. O-O
c5 9. c3 O-O 10. Nbd2 a6 11. a4 Qc8 12. Bd3 Re8 13. e4 e5 14. Re1 Qc7 15. Rc1
Rac8 16. Qe2 Qc6 17. d5 Qc7 18. Bxa6 Bxa6 19. Qxa6 Ra8 20. Qc4 Ra7 21. b3 Rb8
22. Qf1 Qb7 23. Nc4 Ne8 24. Na3 Nc7 25. c4 Qc8 26. Nd2 Qf8 27. Rc2 f5 28. f4
exf4 29. Bxf4 Bd4+ 30. Kh1 fxe4 31. Nxe4 Ne5 32. Bxe5 Bxe5 33. Rf2 Qg7 34. Nf6+
Kh8 35. Ng4 Na6 36. Nxe5 dxe5 37. Nb5 Rd7 38. Qd3 Nb4 39. Qg3 Re8 40. Rfe2 Rde7
41. d6 Re6 42. Nc7 1-0

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.06"]
[Round "2.18"]
[White "De Mattos, Pedro Benedito Flor"]
[Black "Reyes Zavaleta, Cristhian Yamil"]
[Result "0-1"]
[ECO "D35"]
[BlackElo "1804"]
[PlyCount "50"]
[EventDate "2023.11.06"]
[EventCountry "BRA"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. Nf3 O-O 6. e3 Nbd7 7. cxd5 exd5 8.
Bd3 c6 9. O-O Re8 10. h3 Ne4 11. Bf4 f5 12. Qe2 Bf6 13. Rad1 Nf8 14. Qc2 g5 15.
Bh2 Ng6 16. Rfe1 Qe7 17. Nd2 Qg7 18. Bxe4 fxe4 19. Nf1 Nh4 20. Kh1 g4 21. hxg4
Bxg4 22. Bg3 Nxg2 23. Kxg2 Bf3+ 24. Kg1 Qh6 25. Nh2 Qh3 0-1

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.07"]
[Round "3.1"]
[White "Fabian Ricardo Reyes Zavaleta"]
[Black "Ivan Excender Soriano Quispe"]
[Result "0-1"]
[ECO "D30"]
[WhiteElo "2122"]
[BlackElo "2214"]
[Annotator "Stockfish 16"]
[PlyCount "78"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

{[%evp 0,78,20,31,20,16,-1,-17,88,-4,115,9,4,4,117,25,47,41,45,22,15,25,17,4,
15,11,12,20,31,-2,38,10,4,16,32,20,46,28,7,-3,-1,-11,-5,-10,-31,-42,2,-22,-36,
-20,-42,-51,-82,-73,-75,-77,-56,-73,-76,-94,-123,-153,-151,-164,-175,-223,-206,
-210,-153,-139,-200,-211,-224,-242,-211,-261,-254,-403,-473,-508,-448]} 1. d4
d5 2. c4 e6 3. Nf3 a6 4. cxd5 exd5 5. Nc3 Nf6 6. Bg5 Be6 7. e3 Nbd7 8. Bd3 Bd6
9. O-O O-O 10. Qc2 h6 11. Bh4 c5 12. dxc5 Nxc5 13. Rad1 Rc8 14. Qb1 b5 15. a3
Nxd3 16. Qxd3 Be7 17. Nd4 Qd7 18. f4 Qd6 19. Nf5 Bxf5 20. Qxf5 Qe6 21. Qxe6
fxe6 22. f5 g5 23. fxg6 Kg7 24. Ne2 Bc5 25. Nd4 $6 {Inaccuracy. Bxf6+ was best.
} (25. Bxf6+ Rxf6 26. Rxf6 Kxf6 27. Rd3 Be7 28. Nf4 Bd6 29. Kf2 Rc2+ 30. Kf3
Rxb2 31. g7 Kxg7) 25... Bxd4 26. exd4 Ne4 27. Rxf8 Kxf8 28. Be1 Kg7 29. h4 $6 {
Inaccuracy. b3 was best.} (29. b3 Kxg6) 29... Kxg6 30. Bd2 Rc2 31. Bf4 Rxb2 32.
Rc1 h5 33. Rc6 a5 $6 {Inaccuracy. Kf5 was best.} (33... Kf5 34. Bc7 Ra2 35. Rc1
Rxa3 36. Rf1+ Kg6 37. Be5 b4 38. Rf8 Ra1+ 39. Kh2 Ra2 40. Rg8+) 34. Bc7 b4 35.
axb4 axb4 36. Rxe6+ Kf7 37. Re5 $6 {Inaccuracy. Rb6 was best.} (37. Rb6 b3 38.
Bf4 Rb1+ 39. Kh2 b2 40. g3 Nc3 41. Bd6 Na4 42. Rb7+ Ke6 43. Ba3 Rd1) 37... Rc2
38. Bd8 b3 39. Re7+ Kf8 0-1

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.07"]
[Round "3.2"]
[White "Pablo Castro Salgado"]
[Black "Mateus Costamilan Tomiello"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2150"]
[BlackElo "2145"]
[Annotator "Stockfish 16"]
[PlyCount "93"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

{[%evp 0,93,20,20,6,6,6,6,13,13,20,13,9,11,31,41,30,45,44,40,33,38,-1,0,3,-25,
21,-19,16,16,33,7,9,-13,-27,-27,-38,-32,-32,-72,-28,-22,4,-28,-27,-19,-17,-28,
-18,-23,-20,-13,-24,-18,8,-9,-9,-18,-29,-11,-22,-16,0,0,0,0,0,0,0,-7,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,29,52,51,57,73,21,79,6,29995,29994]} 1. d4 Nf6 2. c4 e6
3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7 7. c5 Ne4 8. Qc2 f5 9. h4 c6 10. Be2
b6 11. cxb6 axb6 12. g4 Ndf6 13. g5 Nd7 14. Nd2 $6 {Inaccuracy. a3 was best.} (
14. a3 Bb7) 14... Nxd2 15. Qxd2 b5 16. Qc2 Qa5 17. O-O b4 18. Nb1 c5 19. dxc5
Nxc5 $6 {Inaccuracy. Qxc5 was best.} (19... Qxc5 20. Qxc5) 20. Nd2 Bd7 21. Nb3
Qb6 22. Nxc5 Bxc5 23. Rfc1 Rfc8 24. Qd2 Bb5 25. Bxb5 Qxb5 26. Be5 Rc6 27. b3 $6
{Inaccuracy. Qd1 was best.} (27. Qd1 Qb7 28. a4 bxa3 29. bxa3 Bd6 30. Rab1 Rxc1
31. Qxc1 Rc8 32. Qd1 Qe7 33. Bxd6 Qxd6) 27... Rac8 28. Rc2 Bd6 29. Rxc6 Qxc6
30. Bxd6 Qxd6 31. Rc1 Rxc1+ $4 {Blunder. Rxc1+ was best.} (31... Rc7 32. Rc2
Rxc2 33. Qc1) 32. Qxc1 $4 {Blunder. Rxc7 was best.} d4 33. exd4 $4 {Checkmate
is now unavoidable. Qxc2 was best.} (33. Qc2 Kf7 34. h5 h6 35. gxh6 gxh6 36. f4
Qe7 37. Kf1 Qh4 38. Qc7+ Qe7 39. Qb6 Qh4) 33... Qxd4 34. h5 Qg4+ 35. Kf1 Qh3+
36. Kg1 Qxh5 (36... Qg4+) 37. Qc8+ Kf7 38. Qd7+ Kf8 39. Qd6+ Kf7 40. Qd7+ Kg6
41. Qxe6+ Kxg5 42. Qe7+ Kg4 43. Qxb4+ f4 44. Qe4 Qa5 45. a4 h5 46. Kg2 g5 47.
b4 1-0

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.07"]
[Round "3.3"]
[White "Diego Saul Rodri Flores Quill"]
[Black "Ivan Varillas Jimenez"]
[Result "1/2-1/2"]
[ECO "C68"]
[WhiteElo "2414"]
[BlackElo "1985"]
[Annotator "Stockfish 16"]
[PlyCount "64"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

{[%evp 16,64,3,-7,-1,-13,0,-8,2,3,37,-7,15,8,29,29,28,13,11,0,0,0,10,-19,-22,
-24,-18,-61,-62,-86,-86,-92,-82,-118,-68,-66,-58,-61,-56,-66,-53,-60,-68,-64,
-64,-63,-17,-24,-26,-32,-3]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. Nc3
f6 6. d4 exd4 7. Qxd4 Qxd4 8. Nxd4 Bd7 9. Be3 O-O-O {[#] C68: Ruy Lopez:
Exchange Variation, sidelines.} 10. h4 $146 ({Predecessor:} 10. O-O-O Ne7 11.
h4 b6 12. h5 c5 13. Nde2 Nc6 14. h6 gxh6 15. Bxh6 f5 16. Bg5 Re8 17. Bf6 Rg8
18. Rxh7 Bd6 {1-0 (26) Deac,B (2700)-Kravtsiv,M (2598) Chess.com INT 2023})
10... Bd6 11. h5 Ne7 {The position is equal.} 12. O-O-O f5 13. f3 {[%eval -7,
28]} (13. Nf3 $14 {[%eval 37,25] might be stronger.}) 13... h6 14. Nde2 fxe4
15. Nxe4 Be5 16. Bd4 Bxd4 17. Nxd4 b6 18. Rhe1 c5 19. Ne2 (19. Ng3 $5 {[%cal
Re1e7]}) 19... Rhf8 20. N2g3 Rde8 21. Rh1 {[%eval -61,25]} (21. Nc3 $11 {
[%eval -18,30]}) 21... Bc6 $15 22. Rh4 Nd5 $1 23. Rd2 Nf4 24. Rf2 {[#]} Re5 {
[%eval -68,27]} (24... Bxe4 $1 $17 {[%eval -118,25]} 25. Nxe4 Re5) 25. Kd2 Be8
{[%cal Re8h5]} 26. Ke3 $1 Nxh5 27. f4 Rd5 28. Nxh5 ({But not} 28. c4 $2 {[#]}
Nxg3 $1 {[%mdl 512]} 29. Nxg3 Rd4 $19) 28... Rxh5 ({Not} 28... Bxh5 $2 29. c4
$18) 29. Rxh5 Bxh5 30. f5 $1 Be8 {[%eval -17,28]} (30... a5 $15 {[%eval -63,25]
is more appropriate.}) 31. g4 $11 Bc6 32. Ng3 Be8 {Accuracy: White = 72%,
Black = 63%.} 1/2-1/2

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.07"]
[Round "3.4"]
[White "Juan Martin Ibarra"]
[Black "Facundo Vazquez"]
[Result "1-0"]
[ECO "B62"]
[WhiteElo "2213"]
[BlackElo "2407"]
[Annotator "Stockfish 16"]
[PlyCount "45"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

{[%evp 0,7,1,44,86,67,63,137,147,34]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6
5. Nc3 Nc6 6. Bg5 e6 7. Qd3 a6 $6 {Inaccuracy. Be7 was best.} (7... Be7 8.
O-O-O O-O 9. Ndb5 d5 10. exd5 Nxd5 11. Bxe7 Qxe7 12. Nxd5) 8. Nxc6 bxc6 9.
O-O-O Be7 10. Qg3 e5 11. Bc4 Be6 $6 {Inaccuracy. O-O was best.} (11... O-O 12.
Qd3) 12. Bxe6 fxe6 13. Qh3 Qc8 14. Bxf6 gxf6 15. Qh5+ Kd7 16. Na4 Kc7 17. Qf7
Re8 18. Rd3 Ra7 $2 {Mistake. f5 was best.} (18... f5 19. exf5 exf5 20. Kb1 e4
21. Rh3 Rb8 22. Rxh7 Rb4 23. b3 Kb8 24. Rg7 Rb7 25. Qg6) 19. Rhd1 d5 20. Rb3 d4
$6 {Inaccuracy. Qd7 was best.} (20... Qd7 21. Nb6) 21. Nc5 Kd6 22. Nxe6 Rd7 23.
Rb4 1-0

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.07"]
[Round "3.5"]
[White "Faustino Oro"]
[Black "Matheus Mendes Domingues Ribe"]
[Result "1-0"]
[ECO "D01"]
[WhiteElo "2377"]
[BlackElo "2150"]
[Annotator "Stockfish 16"]
[PlyCount "111"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

{[%evp 0,111,20,20,18,18,20,15,66,67,88,44,33,7,32,24,11,28,26,30,20,38,17,34,
46,53,48,30,30,32,50,41,52,37,31,20,7,-13,61,-2,-3,3,39,47,25,18,19,29,17,25,
40,17,42,3,14,15,12,10,9,5,8,18,5,15,10,16,24,0,13,10,13,6,0,0,0,0,0,0,0,0,0,
-8,11,0,-6,-4,-10,-13,77,55,31,30,105,96,128,107,107,123,143,154,155,154,175,
166,394,426,769,769,1008,1014,1095,1086,1152,1190]} 1. d4 d5 2. Nc3 Nf6 3. Bf4
c5 4. e3 e6 $6 {Inaccuracy. cxd4 was best.} (4... cxd4 5. exd4 Bg4 6. Be2 Bxe2
7. Qxe2 a6 8. Nd1 e6 9. c3) 5. Nb5 Na6 6. c3 Be7 7. Nf3 O-O 8. Be2 Bd7 9. Ne5
Bxb5 10. Bxb5 Qb6 11. Qe2 Nb8 12. O-O Nc6 13. Nxc6 bxc6 14. Bd3 cxd4 15. cxd4
c5 16. dxc5 Bxc5 17. Rfc1 Bd6 18. Bg5 Rfc8 19. Rc2 Rxc2 20. Qxc2 Qc7 21. Qxc7
Bxc7 22. Rc1 Be5 23. b4 h6 24. Bh4 Kf8 25. a4 $6 {Inaccuracy. f3 was best.} (
25. f3) 25... Ke8 $6 {Inaccuracy. g5 was best.} (25... g5 26. Bg3 Bxg3 27. hxg3
a5 28. b5 Nd7 29. Rc6 Ke7 30. f4 Kd8 31. Be2 Nb8 32. Rc3) 26. Kf1 $6 {
Inaccuracy. f3 was best.} (26. f3 Rb8) 26... g5 27. Bg3 Bxg3 28. hxg3 Kd8 29.
Ke2 Rc8 30. Rh1 h5 31. Kd2 Rb8 32. b5 Rc8 33. f3 Rc5 34. Rb1 Kc7 35. a5 Nd7 36.
f4 g4 37. e4 dxe4 38. Bxe4 Nf6 39. Bd3 Nd5 40. Re1 Nb4 41. Re5 Kd6 42. Rxc5
Kxc5 43. Bh7 $6 {Inaccuracy. b6 was best.} (43. b6 axb6 44. a6 Nc6 45. f5 exf5
46. Bxf5 b5 47. Bd7 Kb6 48. Be8 f6 49. Kc3 f5) 43... Kd6 $4 {Blunder. Kxb5 was
best.} (43... Kxb5) 44. Kc3 Nd5+ $6 {Inaccuracy. Kc5 was best.} (44... Kc5 45.
Bg8 f6 46. Bxe6 Kxb5 47. Kd4 Kc6 48. Ke4 Kd6 49. Kf5 Ke7 50. Bc8 Nc6 51. a6)
45. Kd4 f6 $6 {Inaccuracy. Nf6 was best.} (45... Nf6) 46. Be4 e5+ $2 {Mistake.
Ne7 was best.} (46... Ne7 47. b6 a6 48. b7 e5+ 49. fxe5+ fxe5+ 50. Kc4 Kc7 51.
Kc5 Ng8 52. Kd5 Nf6+ 53. Kxe5) 47. fxe5+ fxe5+ 48. Kc4 Nc7 49. Bg6 Nd5 50. Bxh5
$2 {Mistake. Be4 was best.} (50. Be4) 50... Ne3+ $2 {Mistake. Nf6 was best.} (
50... Nf6 51. Bg6) 51. Kd3 Nxg2 $6 {Inaccuracy. Nd1 was best.} (51... Nd1 52.
Bg6) 52. Bxg4 Kc5 53. b6 axb6 54. a6 e4+ 55. Ke2 Kc6 56. Bc8 1-0

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.07"]
[Round "3.6"]
[White "Nathan Felipe Filgueiras"]
[Black "Luigy Lira De Siqueira"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "2323"]
[BlackElo "2179"]
[Annotator "Stockfish 16"]
[PlyCount "59"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

{[%evp 0,41,20,9,71,5,24,19,70,-53,-15,-48,-31,-28,27,-32,26,39,45,35,26,33,36,
28,42,29,48,54,43,48,44,44,62,66,64,55,55,62,62,65,87,12,27,6]} 1. e4 e5 2. Nf3
Nc6 3. Nc3 Nf6 4. Be2 d5 5. exd5 Nxd5 6. O-O Nxc3 7. bxc3 Bd6 8. d4 exd4 9.
cxd4 O-O 10. Rb1 h6 11. Re1 Qf6 12. Be3 Rb8 13. d5 Ne5 14. Bxa7 Ra8 15. Bd4
Nxf3+ 16. Bxf3 Qg5 17. Rb2 b6 18. c4 Bd7 19. g3 Ra4 20. h4 Qg6 21. Bh5 Qf5 22.
Be2 Re8 23. Bf1 Rea8 24. Bd3 Qh3 25. Qb1 Ra3 26. Re3 Qg4 27. Re4 Qh3 28. Re3
Qg4 29. Re4 Qh3 30. Re3 (30. Be5 Bc5 31. Bxc7 $6 {Inaccuracy. Bd4 was best.} (
31. Bd4) 31... Bd6 $4 {Blunder. Bf5 was best.} (31... Bf5 32. Rd2) 32. Re1 $4 {
Blunder. Bxd6 was best.} (32. Bxd6 Rxd3 33. Qxd3 Bf5 34. Qf3 Bxe4 35. Qxe4 Ra6
36. Bc7 Qd7 37. Rxb6 Rxb6 38. Bxb6 Qd6) 32... Bc5 $4 {Blunder. Bxc7 was best.}
(32... Bxc7 33. Re3) 33. Re4 $2 {Mistake. Rbe2 was best.} (33. Rbe2 f6) 33...
Bf5 34. Be5 $4 {Blunder. Bf1 was best.} (34. Bf1 Bxe4)) 1/2-1/2

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.07"]
[Round "3.7"]
[White "Sathish, Pranav"]
[Black "Casalaspro, Mathias Andre"]
[Result "1/2-1/2"]
[ECO "A49"]
[WhiteElo "2412"]
[BlackElo "2060"]
[PlyCount "81"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. g3 O-O 5. Bg2 d6 6. d4 b5 7. O-O Bb7 8. Qd3
a6 9. Nbd2 Nbd7 10. c4 e6 11. Rac1 c5 12. e3 Qb6 13. Qe2 b4 14. e4 cxd4 15.
Bxd4 Qc6 16. Ne1 e5 17. Bb2 Ne8 18. Nd3 Qb6 19. c5 dxc5 20. Qe3 Nd6 21. Bh3 f5
22. exf5 Nxf5 23. Bxf5 Rxf5 24. Nxc5 Nxc5 25. Rxc5 Raf8 26. Nc4 Qe6 27. Rc7 Ba8
28. Rxg7+ Kxg7 29. Nxe5 Kg8 30. Ng4 Qxe3 31. Nxe3 Ra5 32. Ra1 Rd8 33. Nc4 Rad5
34. Kf1 Rd3 35. Re1 Rd1 36. Rxd1 Rxd1+ 37. Ke2 Rb1 38. Bd4 Bd5 39. Ne3 Be6 40.
Kd2 Rh1 41. h4 1/2-1/2

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.07"]
[Round "3.8"]
[White "Reyes Zavaleta, Cristhian Yamil"]
[Black "Tomiello, Lucas Costamilan"]
[Result "1/2-1/2"]
[ECO "E92"]
[WhiteElo "1804"]
[BlackElo "2279"]
[PlyCount "80"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. dxe5 dxe5 8.
Qxd8 Rxd8 9. Bg5 Re8 10. Nd5 Nxd5 11. cxd5 c6 12. Nd2 cxd5 13. exd5 h6 14. Be3
f5 15. Nc4 Rd8 16. Rd1 Na6 17. O-O f4 18. Bd2 Bf5 19. Bc3 e4 20. Bxg7 Kxg7 21.
Na5 Nb4 22. Rd4 Rxd5 23. Rxb4 Rxa5 24. Rxb7+ Kf6 25. Bc4 Rd8 26. b4 Ra3 27. h4
Be6 28. Bxe6 Kxe6 29. Rh7 h5 30. Rc1 Rd6 31. Rcc7 Rxa2 32. Rce7+ Kd5 33. Rhf7
Re6 34. Rxe6 Kxe6 35. Rxf4 Ke5 36. Rf7 a6 37. Rg7 Kf5 38. Rc7 Rb2 39. Rc5+ Kf4
40. Rc6 Rxb4 1/2-1/2

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.07"]
[Round "3.9"]
[White "Silva, Kaua Marques"]
[Black "Munoz Ramos, Christopher"]
[Result "0-1"]
[ECO "B92"]
[WhiteElo "2235"]
[BlackElo "2038"]
[PlyCount "104"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nf3 Be7 8. Bg5
Be6 9. Bxf6 Bxf6 10. Nd5 Bxd5 11. Qxd5 Nc6 12. O-O O-O 13. Rad1 Be7 14. c3 Qc7
15. Bc4 Nd8 16. Bb3 Ne6 17. Qc4 Qb6 18. Qe2 Nf4 19. Qe3 Qc6 20. g3 Nh5 21. Ne1
Nf6 22. Bd5 Nxd5 23. Rxd5 f5 24. Nc2 f4 25. Qd3 fxg3 26. hxg3 Rf6 27. Ne3 Raf8
28. Nf5 Qc7 29. Qe2 g6 30. Ne3 R6f7 31. Rd3 Bg5 32. Nd5 Qc5 33. Kg2 b5 34. f3
Bh6 35. Rfd1 Bg5 36. Qf2 Bd8 37. Qxc5 dxc5 38. f4 exf4 39. gxf4 Re8 40. Re3 g5
41. f5 h5 42. Rh1 h4 43. Kf3 Rd7 44. b3 g4+ 45. Kf4 Rxd5 46. Kxg4 Rd7 47. Kf4
Rg7 48. Rd3 Bc7+ 49. Ke3 Rg3+ 50. Kd2 Rxe4 51. Rd5 Bf4+ 52. Kd1 Rxc3 0-1

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.07"]
[Round "3.10"]
[White "Lima, Carlos Eduardo I De"]
[Black "Piccoli, Lucas Fonseca"]
[Result "0-1"]
[ECO "E14"]
[WhiteElo "1857"]
[BlackElo "2225"]
[PlyCount "84"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Be2 Bb7 5. c4 Bb4+ 6. Bd2 Bxd2+ 7. Nbxd2 O-O 8.
Qc2 d6 9. O-O-O c5 10. e4 Nc6 11. d5 Nd4 12. Nxd4 cxd4 13. Kb1 e5 14. h4 Rc8
15. f4 Qe7 16. f5 b5 17. g4 bxc4 18. Nxc4 Nxd5 19. exd5 Bxd5 20. f6 Qe6 21.
fxg7 Rfe8 22. Rhe1 Bxc4 23. Bxc4 Rxc4 24. Qf2 Qg6+ 25. Ka1 Rc2 26. Qf3 Rb8 27.
h5 Qe6 28. Rb1 Rc5 29. g5 Kxg7 30. h6+ Kf8 31. Rf1 Qd5 32. g6 Qxf3 33. gxh7 Ke7
34. Rxf3 Rh8 35. b4 Rc2 36. Rg1 Rxh7 37. Rh3 e4 38. Kb1 d3 39. a3 d5 40. Rf1
Rc6 41. Rfh1 d4 42. Re1 e3 0-1

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.07"]
[Round "3.11"]
[White "Vasquez Vargas, Henry Richard"]
[Black "Nascimento, Luiz Eduardo Da Tri"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2216"]
[BlackElo "1877"]
[PlyCount "95"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Be7 6. e3 c6 7. Bd3 Be6 8. f4
h6 9. Bxf6 Bxf6 10. Qc2 c5 11. Nf3 cxd4 12. exd4 O-O 13. O-O-O Nc6 14. Bb5 Nb4
15. Qb3 Nc6 16. Kb1 a6 17. Bxc6 bxc6 18. Na4 Rb8 19. Qc3 Qd6 20. Ne5 Bxe5 21.
fxe5 Qb4 22. Qxb4 Rxb4 23. Nc5 a5 24. b3 Rb6 25. Rc1 Rc8 26. Kb2 Rb4 27. Rhd1
Bg4 28. Rd3 Bf5 29. a3 Rb6 30. Rf3 Be6 31. Rfc3 Rcb8 32. Na4 Rb5 33. Re3 Rc8
34. Rc5 Rxc5 35. Nxc5 Rb8 36. Kc3 Kf8 37. Re2 Ke7 38. Rb2 Ra8 39. a4 Bc8 40. b4
g5 41. bxa5 Rxa5 42. Rb8 Bg4 43. Kb4 Ra7 44. a5 Be2 45. Rb6 Bb5 46. a6 Bxa6 47.
Rxa6 Rc7 48. Ka5 1-0

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.07"]
[Round "3.12"]
[White "Da Fonseca Pinto, Joao Gabriel Alves"]
[Black "Labussiere, Yago"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "1762"]
[BlackElo "2185"]
[PlyCount "128"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 4. O-O Bd7 5. c3 a6 6. Ba4 Nf6 7. Re1 b5 8. Bc2
Bg4 9. h3 Bxf3 10. Qxf3 g6 11. d3 Bg7 12. Nd2 O-O 13. Qe2 Nd7 14. Nf3 b4 15.
Bd2 Rb8 16. Ba4 bxc3 17. bxc3 Qc7 18. Bxc6 Qxc6 19. d4 Rb2 20. Qc4 e6 21. Bc1
Qb5 22. Qxb5 Rxb5 23. Bf4 Rb6 24. Rad1 cxd4 25. cxd4 Nf6 26. Rc1 d5 27. e5 Ne4
28. Ng5 Nxg5 29. Bxg5 Rb7 30. Rc6 h6 31. Be3 Ra8 32. Rec1 Kh7 33. Rc7 Raa7 34.
Rxb7 Rxb7 35. Rc6 Ra7 36. a4 Bf8 37. Bd2 Ba3 38. Kf1 Bb2 39. Bc3 Bxc3 40. Rxc3
Rb7 41. Rc6 Rb4 42. Rxa6 Rxd4 43. Ra7 Kg7 44. a5 g5 45. a6 Ra4 46. Ra8 f6 47.
exf6+ Kxf6 48. a7 Ke5 49. Ke2 Ra3 50. Rh8 Rxa7 51. Rxh6 Ra2+ 52. Kf3 Ra3+ 53.
Ke2 Ra2+ 54. Kf3 Ra3+ 55. Ke2 d4 56. Rg6 Kf5 57. Rg8 Kf4 58. g3+ Ke4 59. f3+
Rxf3 60. Rxg5 d3+ 61. Ke1 e5 62. h4 Kd4 63. h5 e4 64. Rg8 Ke3 0-1

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.07"]
[Round "3.13"]
[White "Montes Orozco, Miguel Angel"]
[Black "Cahuapaza Tarapaca, Leonardo"]
[Result "1-0"]
[ECO "B11"]
[WhiteElo "2097"]
[BlackElo "1818"]
[PlyCount "101"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. h3 Bxf3 5. Qxf3 e6 6. d3 g6 7. h4 Nd7 8. h5
Qf6 9. hxg6 fxg6 10. Qg3 Bb4 11. Bd2 d4 12. Nb1 Be7 13. Qc7 e5 14. Qxb7 Rb8 15.
Qa6 Bc5 16. Be2 Ne7 17. Bg4 h5 18. Bxd7+ Kxd7 19. b4 Bb6 20. Na3 Rhf8 21. f3 h4
22. Nc4 g5 23. b5 g4 24. O-O-O g3 25. Bb4 c5 26. Ba5 Nc8 27. Rde1 Kc7 28. Bd2
Ne7 29. f4 Ng6 30. f5 Ne7 31. Nxe5 Kd8 32. Nc4 Rh8 33. Bf4 h3 34. Rxh3 Rxh3 35.
gxh3 g2 36. Rg1 Qh4 37. Bxb8 Qf2 38. Bh2 Bc7 39. Bxc7+ Kxc7 40. Qxa7+ Kd8 41.
Qb8+ Nc8 42. Qh2 Qf1+ 43. Kb2 Nb6 44. Nxb6 c4 45. Qd6+ Ke8 46. Qe6+ Kf8 47.
Nd7+ Kg7 48. Qf6+ Kh7 49. Qe7+ Kg8 50. Qf8+ Kh7 51. Nf6# 1-0

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.07"]
[Round "3.14"]
[White "Nascimento, Kaio Vinicius Da Tr"]
[Black "Schnaider, Ilan"]
[Result "0-1"]
[ECO "D93"]
[WhiteElo "1310"]
[BlackElo "2333"]
[PlyCount "88"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bf4 O-O 6. e3 c5 7. dxc5 Qa5 8. Qa4
Qxc5 9. Qb5 Qxb5 10. Nxb5 Na6 11. Nbd4 Nh5 12. cxd5 Nxf4 13. exf4 Nb4 14. Bc4
Rd8 15. Nb5 Nc2+ 16. Ke2 Nxa1 17. Rxa1 Bg4 18. Rd1 Rac8 19. Bb3 a6 20. Nbd4
Bxd4 21. Rxd4 e6 22. Ke3 Bxf3 23. Kxf3 exd5 24. f5 Kg7 25. fxg6 hxg6 26. g4 b5
27. Ke3 Rc1 28. Bd1 Rc4 29. Rd2 g5 30. f3 Rf4 31. Bb3 d4+ 32. Kf2 Re8 33. Kg3
Re1 34. h4 f6 35. Bd5 Rg1+ 36. Kh2 Re1 37. Kg3 Re3 38. b3 Rc3 39. Ba8 f5 40.
hxg5 Rxg4+ 41. Kh3 Rxg5 42. Rxd4 Rc8 43. Kh4 Rg1 44. Rd7+ Kf6 0-1

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.07"]
[Round "3.15"]
[White "Nascimento, Nicolas Daniel Trin"]
[Black "Seccafim, Caic Dos Santos"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "1797"]
[BlackElo "2062"]
[PlyCount "100"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. Nf3 g6 2. g3 Bg7 3. d4 Nf6 4. Bg2 O-O 5. O-O d5 6. Nbd2 b6 7. c4 e6 8. Ne5
Bb7 9. Qc2 Nbd7 10. Nxd7 Qxd7 11. e3 Rfd8 12. b3 Rac8 13. Bb2 c5 14. dxc5 dxc4
15. Bxb7 Qxb7 16. Nxc4 Rxc5 17. Rad1 Rcd5 18. Rxd5 Qxd5 19. Rc1 h5 20. h4 b5
21. Ne5 Ne4 22. Nc6 Rd7 23. Bxg7 Kxg7 24. Qb2+ f6 25. Qd4 a6 26. Qxd5 Rxd5 27.
Rc2 f5 28. Kg2 Kf6 29. Nb4 Rc5 30. Rxc5 Nxc5 31. f3 Ke7 32. Kf2 Kd6 33. Ke2 e5
34. Nd3 Nxd3 35. Kxd3 a5 36. a3 Kc5 37. Kc3 Kd5 38. Kd2 b4 39. axb4 axb4 40.
Kd3 e4+ 41. fxe4+ fxe4+ 42. Ke2 Ke6 43. Kf2 Kf5 44. Kf1 Kg4 45. Kg2 Kf5 46. Kf1
g5 47. hxg5 Kxg5 48. Kg1 Kg4 49. Kg2 h4 50. gxh4 Kxh4 1/2-1/2

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.07"]
[Round "3.16"]
[White "De Oliveira, Joao Pedro Almeida"]
[Black "Errazola, Mauricio"]
[Result "0-1"]
[ECO "B02"]
[BlackElo "1725"]
[PlyCount "60"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. Nc3 d6 5. f4 dxe5 6. fxe5 Nc6 7. Nf3 Bg4 8. d3
Nxe5 9. c5 Bxf3 10. gxf3 Nd5 11. Bd2 e6 12. Qa4+ c6 13. O-O-O Nxf3 14. Nxd5
Nxd2 15. Rxd2 Qxd5 16. Bg2 Qd7 17. d4 g6 18. Kb1 Bg7 19. Rhd1 O-O 20. d5 exd5
21. Rxd5 Qe6 22. Rd6 Qe5 23. Qd4 Rfe8 24. Rd2 a5 25. Qc4 Rad8 26. Qc2 Rxd6 27.
Rxd6 h5 28. Bf1 a4 29. Rd2 Qb8 30. Rf2 Re1+ 0-1

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.07"]
[Round "3.17"]
[White "Reyes Zavaleta, Sergio Gabriel"]
[Black "Reimberg, Arthur Bernardo"]
[Result "1/2-1/2"]
[ECO "D06"]
[WhiteElo "1287"]
[PlyCount "89"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 d5 2. Nf3 Bf5 3. Bf4 Nf6 4. c4 e6 5. Nc3 Bd6 6. Bxd6 Qxd6 7. c5 Qe7 8. e3
O-O 9. Bd3 Bxd3 10. Qxd3 c6 11. O-O Nbd7 12. b4 e5 13. dxe5 Nxe5 14. Nxe5 Qxe5
15. Qd4 Qxd4 16. exd4 Rfe8 17. Rfe1 Ne4 18. Nxe4 dxe4 19. Rad1 Rad8 20. a4 f5
21. b5 Kf7 22. a5 Ke6 23. a6 bxa6 24. bxc6 Kd5 25. Re2 Kxc6 26. Ra2 Re7 27.
Rxa6+ Kb7 28. Rda1 Kb8 29. Rb1+ Rb7 30. Rd1 Rxd4 31. Rc1 Rc7 32. g3 Kb7 33. Re6
Rd5 34. Rb1+ Kc8 35. c6 a5 36. Rb6 Ra7 37. Rb1 a4 38. Re8+ Rd8 39. Re5 g6 40.
Reb5 Kc7 41. Rb7+ Rxb7 42. cxb7 Rb8 43. Ra1 Rxb7 44. Rxa4 Kd6 45. Ra8 1/2-1/2

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.07"]
[Round "3.18"]
[White "Andriska, Matheus Jose Amante"]
[Black "De Mattos, Pedro Benedito Flor"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "1261"]
[PlyCount "92"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bc4 Bc5 5. d3 h6 6. O-O O-O 7. Bd2 d6 8. h3
Be6 9. Nd5 Bxd5 10. Bxd5 Nxd5 11. exd5 Ne7 12. c4 c6 13. dxc6 Nxc6 14. Bc3 Qd7
15. a3 a5 16. Rb1 a4 17. b3 axb3 18. Qxb3 Rxa3 19. Qb2 Rfa8 20. Ra1 Rxa1 21.
Rxa1 Rxa1+ 22. Qxa1 b6 23. Kf1 Kh7 24. Qb1 Nd4 25. Nxd4 exd4 26. Bd2 Qf5 27.
Ke2 Qe5+ 28. Kf1 Qh2 29. Ke2 Qxg2 30. Bb4 Qxh3 31. Bxc5 bxc5 32. Qb6 Qe6+ 33.
Kd2 Qf6 34. Ke2 h5 35. Qb1 h4 36. Qh1 g5 37. Kf1 Qf4 38. Kg1 Qc1+ 39. Kg2 Qxh1+
40. Kxh1 f5 41. Kg2 Kg6 42. f3 g4 43. f4 Kf6 44. Kh2 Ke6 45. Kg2 d5 46. cxd5+
Kxd5 0-1

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.08"]
[Round "4.1"]
[White "Ivan Excender Soriano Quispe"]
[Black "Pablo Castro Salgado"]
[Result "1-0"]
[ECO "A21"]
[WhiteElo "2214"]
[BlackElo "2150"]
[Annotator "Stockfish 16"]
[PlyCount "133"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

{[%evp 0,133,26,-59,-58,-46,34,-19,36,1,20,20,11,21,46,9,10,6,9,6,25,31,13,7,
19,-11,22,45,48,-14,0,4,-3,2,57,20,22,7,35,-13,2,-46,11,-54,-76,-168,-168,-168,
-181,-176,-143,-175,-120,-143,-96,-125,-134,-169,-136,-128,-109,-167,-129,-125,
-122,-128,-111,-110,-73,-111,-101,-100,-77,-64,-84,-102,-73,-100,-117,-121,
-117,-118,-127,-129,-121,-91,-90,-94,-94,-141,-123,-124,-114,-184,-138,-120,
-97,-207,-186,-178,-176,-156,-106,-109,-130,-170,-74,-95,-29,-6,49,-73,116,-35,
98,324,324,324,581,823,831,851,853,580,918,918,978,1060,1060,1179,1380,29988,
29989,29990,29997,29998]} 1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3 4. bxc3 d6 5. Bg2 Nc6
6. Rb1 Nge7 7. d3 O-O 8. Nf3 Rb8 9. O-O f5 10. d4 e4 11. Nd2 $6 {Inaccuracy.
Nh4 was best.} (11. Nh4 Na5 12. f3 e3 13. Bxe3 h6 14. Bc1 g5 15. Nxf5 Bxf5 16.
e4 Be6 17. f4 Bxc4) 11... Na5 12. e3 Be6 13. Qe2 Qd7 14. Ba3 b6 15. f3 exf3 16.
Bxf3 c5 17. e4 Rbe8 18. Bb2 $6 {Inaccuracy. Rbe1 was best.} (18. Rbe1 f4 19.
Bh5 Ng6 20. Bxg6 hxg6 21. gxf4 Qa4 22. Bc1 cxd4 23. cxd4 Nxc4 24. Nf3 d5) 18...
Qa4 19. d5 Bf7 20. Qd1 Qd7 21. Rf2 Bg6 22. Ra1 $4 {Blunder. Qe2 was best.} (22.
Qe2 fxe4) 22... fxe4 23. Nxe4 Nxc4 24. Bc1 Ne5 $6 {Inaccuracy. Bxe4 was best.}
(24... Bxe4 25. Bxe4 Rxf2 26. Kxf2 Ng6 27. Bg2 Qf5+ 28. Kg1 Qe5 29. Bd2 Ne3 30.
Qe2 Nxg2 31. Qxg2) 25. Bg2 Rxf2 26. Nxf2 Nf5 27. Bf4 Nc4 28. Bh3 Qe7 $6 {
Inaccuracy. Qb7 was best.} (28... Qb7 29. Qf3 Nfe3 30. Bxe3 Rxe3 31. Qg4 Ne5
32. Qf4 Rf3 33. Be6+ Kh8 34. Qg5 Rf8 35. Qe3) 29. Qf3 $6 {Inaccuracy. Qa4 was
best.} (29. Qa4 Ne5) 29... h6 30. Bf1 $6 {Inaccuracy. Rf1 was best.} (30. Rf1
Qe2 31. Qxe2 Rxe2 32. Bg4 Re8 33. Nd1 h5 34. Bh3 b5 35. Kf2 Kf7 36. Re1 Ne5)
30... Ne5 $6 {Inaccuracy. Nfe3 was best.} (30... Nfe3 31. Re1 Qf7 32. Re2 Nxf1
33. Rxe8+ Qxe8 34. Kxf1 b5 35. h4 a5 36. g4 Bb1 37. a3) 31. Qd1 Qf7 32. Bb5 Re7
33. Be2 Kh7 34. Rc1 Qe8 35. Ra1 Nf7 36. Bd3 Ne5 37. Be2 Qf7 38. Qd2 b5 39. Rf1
$6 {Inaccuracy. Bxe5 was best.} (39. Bxe5 Rxe5 40. Bxb5 Ne3 41. Re1 Qxd5 42.
Qxd5 Nxd5 43. Rxe5 dxe5 44. Nd1 Bf7 45. a3 Kg6) 39... Qe8 40. Qc1 a6 41. a3 Qa8
42. Qd1 Qd8 43. h4 Kh8 44. Qc1 $2 {Mistake. h5 was best.} (44. h5 Bh7) 44...
Bh7 45. h5 Nc4 $2 {Mistake. Qe8 was best.} (45... Qe8 46. Ng4 Nc4 47. Bxc4 bxc4
48. Nf2 Re2 49. Qd1 a5 50. g4 Nh4 51. Kh2 Nf3+ 52. Kg3) 46. Bf3 $4 {Blunder.
Bxc4 was best.} (46. Bxc4 bxc4 47. Re1 Bg8 48. Rxe7 Qxe7 49. g4 Nh4 50. Qe3
Qxe3 51. Bxe3 Nf3+ 52. Kg2 Bxd5) 46... Ne5 $6 {Inaccuracy. Qe8 was best.} (
46... Qe8 47. Ng4 a5 48. Kg2 a4 49. Kg1 Qf7 50. Kg2 Qxh5 51. Nxh6 Re2+ 52. Bxe2
Qxe2+ 53. Rf2) 47. Be2 Nc4 $6 {Inaccuracy. Qe8 was best.} (47... Qe8 48. g4 Nf7
49. Bf3 Ne3 50. Re1 Nc4 51. Rxe7 Qxe7 52. Bg2 Qf6 53. Nh3 Qh4 54. Nf2) 48. Bf3
$2 {Mistake. Bxc4 was best.} (48. Bxc4 bxc4) 48... Nfe3 49. Re1 Nc2 $6 {
Inaccuracy. Qe8 was best.} (49... Qe8 50. Ng4 Nc2 51. Rxe7 Qxe7 52. Qf1 N2xa3
53. Be2 a5 54. Bd3 Bxd3 55. Qxd3 Qe1+ 56. Kg2) 50. Re6 Rxe6 $4 {Blunder. Bf5
was best.} (50... Bf5 51. Bg4 Bxe6 52. dxe6 N2xa3 53. Nd3 b4 54. Bg5 hxg5 55.
Qxg5 Ne5 56. Nxe5 dxe5 57. Bf5) 51. dxe6 Qe7 52. Bg4 $6 {Inaccuracy. Bd5 was
best.} (52. Bd5 N2xa3 53. Bxh6 gxh6 54. Qxh6 Nb6 55. Be4 Nc8 56. Bxh7 Qxh7 57.
Qf8+ Qg8 58. Qf6+ Qg7) 52... N2xa3 53. Qd1 a5 54. Qd5 b4 $4 {Blunder. a4 was
best.} (54... a4 55. Qc6 Na5 56. Qxd6 Qxd6 57. Bxd6 Bg8 58. Ne4 N3c4 59. Bxc5
Bxe6 60. Bxe6 a3 61. Bxa3) 55. cxb4 $4 {Blunder. Qc6 was best.} (55. Qc6 Qf8
56. Qc7 Bg8 57. e7 Qe8 58. Qd8 Bf7 59. Bd7 Qg8 60. cxb4 cxb4 61. Be6 Bxe6)
55... axb4 56. Qc6 Qf6 $4 {Blunder. Na5 was best.} (56... Na5 57. Qxd6 Qxd6 58.
Bxd6 Nb5 59. Bxc5 b3 60. Nd1 Be4 61. Nb2 Nb7 62. e7 N5d6 63. Bb4) 57. Qe8+ Bg8
58. e7 b3 $4 {Checkmate is now unavoidable. Nb5 was best.} (58... Nb5 59. Qxg8+
Kxg8 60. e8=Q+ Kh7 61. Be6 Qxe6 62. Qxe6 Ne5 63. Qf5+ Kh8 64. Qc8+ Kh7 65. Kh1)
59. Qxg8+ Kxg8 60. e8=Q+ Kh7 61. Ne4 Qa1+ 62. Kh2 Qb2+ 63. Kh3 Ne3 64. Bxe3 Qe5
65. Qg6+ Kg8 66. Be6+ Kh8 67. Qe8+ 1-0

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.08"]
[Round "4.2"]
[White "Ivan Varillas Jimenez"]
[Black "Faustino Oro"]
[Result "0-1"]
[ECO "B40"]
[WhiteElo "1985"]
[BlackElo "2377"]
[Annotator "Stockfish 16"]
[PlyCount "70"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

{[%evp 0,70,20,19,60,60,60,47,47,47,78,54,51,62,53,66,37,7,14,0,1,-51,-63,-54,
-46,-66,-66,-67,-67,-66,-66,-102,-79,-64,-32,-43,-21,-20,-17,-22,-3,15,48,-2,
103,66,111,42,54,54,49,54,63,10,45,27,41,14,14,-87,51,27,53,31,41,65,-58,-85,
-85,-558,-355,-29989,-29990]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Bc5 $6 {
Inaccuracy. Nf6 was best.} (4... Nf6 5. Nc3 Nc6 6. Bf4 d6 7. Ndb5 e5 8. Bg5 a6
9. Na3) 5. Nb3 Bb6 6. Nc3 Ne7 7. Qf3 $6 {Inaccuracy. Bf4 was best.} (7. Bf4 d5
8. Qh5 O-O 9. O-O-O Nd7 10. exd5 Nf6 11. Qf3 Nexd5) 7... O-O 8. Be3 f5 9. O-O-O
Nbc6 10. Qe2 $6 {Inaccuracy. Bxb6 was best.} (10. Bxb6 axb6 11. exf5 Nxf5 12.
Kb1 d5 13. Qh5 Bd7 14. a3 d4 15. Nb5 e5 16. Bd3 Nh6) 10... fxe4 11. Nxe4 d5 12.
Nc3 e5 13. Bxb6 axb6 14. a3 Be6 15. g3 d4 16. Ne4 $6 {Inaccuracy. Bg2 was best.
} (16. Bg2 Qc8 17. Nb5 Kh8 18. Kb1 Nd5 19. Rd2 Qd7 20. Re1 Bg8 21. Be4 Na5 22.
Nxa5 bxa5) 16... Qc8 $6 {Inaccuracy. Nd5 was best.} (16... Nd5) 17. Kb1 Bd5 $6
{Inaccuracy. Kh8 was best.} (17... Kh8) 18. Bg2 Qf5 19. Rhf1 Rad8 20. Nc1 Na5
$6 {Inaccuracy. Qg6 was best.} (20... Qg6 21. Rde1) 21. Nd3 Nec6 $6 {
Inaccuracy. Nc4 was best.} (21... Nc4 22. f4) 22. b3 $6 {Inaccuracy. f4 was
best.} (22. f4 exf4) 22... Rfe8 23. Rfe1 $4 {Blunder. f4 was best.} (23. f4 Qf8
24. Kb2 Kh8 25. Ng5 Bxg2 26. Qxg2 Nc4+ 27. bxc4 Na5 28. Qe4 Nxc4+ 29. Kc1 Qxa3+
) 23... Qf8 24. Kb2 Ra8 $2 {Mistake. b5 was best.} (24... b5 25. Ra1 Nc4+ 26.
Kc1 Nxa3 27. Qf3 Qe7 28. Qh5 Rf8 29. Qg5 Qxg5+ 30. Nxg5 Bxg2 31. Rxa3) 25. Ra1
Kh8 26. Bh1 $2 {Mistake. f4 was best.} (26. f4 b5 27. Ng5 Bxg2 28. Qxg2 h6 29.
Nf3 e4 30. Nh4 Qd6 31. Rxe4 Nc4+ 32. bxc4 bxc4) 26... Bg8 $6 {Inaccuracy. b5
was best.} (26... b5 27. Nd2) 27. Nd2 $6 {Inaccuracy. Qh5 was best.} (27. Qh5)
27... b5 28. Qh5 Bf7 29. Qg5 Qd6 30. f4 Qc7 31. Ne4 $6 {Inaccuracy. Bxc6 was
best.} (31. Bxc6 Qxc6) 31... Rac8 32. Rac1 $4 {Blunder. f5 was best.} (32. f5
Ne7 33. Nb4 h6 34. Qg4 d3 35. f6 gxf6 36. Qf3 f5 37. Rac1 Qb6 38. Nxd3 fxe4)
32... Nc4+ 33. bxc4 bxc4 34. Nb4 $6 {Inaccuracy. Nec5 was best.} (34. Nec5 cxd3
35. Qf5 Na5 36. Bxb7 Qxc5 37. Qxf7 d2 38. Bxc8 Nc4+ 39. Qxc4 Qxc4 40. Rxe5)
34... Nxb4 35. axb4 $2 {Checkmate is now unavoidable. Rb1 was best.} (35. Rb1
c3+ 36. Kc1 Nxc2 37. Nf6 Nxe1 38. Qf5 gxf6 39. Be4 Be6 40. Qxf6+ Qg7 41. Qxg7+
Kxg7) 35... c3+ 0-1

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.08"]
[Round "4.3"]
[White "Nathan Felipe Filgueiras"]
[Black "Juan Martin Ibarra"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2323"]
[BlackElo "2213"]
[Annotator "Stockfish 16"]
[PlyCount "108"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

{[%evp 0,108,20,19,82,61,59,62,70,52,48,41,69,37,33,-1,56,47,3,-51,-28,-56,-53,
-53,-49,-49,-43,-37,-44,-56,-37,-35,-43,-46,-32,-61,-51,-66,-61,-52,-42,-41,
-15,-45,-43,-45,-49,-43,-38,-43,-21,-51,-28,-23,-7,-9,0,43,47,47,23,0,-10,-10,
-16,-11,0,3,15,31,57,29,70,37,64,70,81,96,99,52,40,43,76,63,56,56,61,58,52,52,
58,31,58,63,50,50,50,46,61,17,17,20,20,0,0,0,0,0,0,0,0]} 1. e4 c6 2. d4 d5 3.
e5 Bf5 4. Nf3 e6 5. Be2 c5 6. Be3 Qb6 7. Nc3 Nc6 8. Rb1 $2 {Mistake. O-O was
best.} (8. O-O Qxb2 9. Qe1 cxd4 10. Bxd4 Nxd4 11. Nxd4 Bb4 12. Rb1 Bxc3) 8...
Bg4 9. Bb5 Bxf3 10. gxf3 cxd4 11. Qxd4 Qxd4 12. Bxd4 Nge7 13. Ne2 Nf5 14. c3
Be7 15. f4 O-O 16. O-O Rac8 17. Be3 f6 18. exf6 Rxf6 19. Rbd1 Nd6 20. Bd3 a6
21. Rfe1 Nf5 22. Ng3 Nxe3 23. fxe3 Bc5 24. Kg2 Rcf8 25. Bc2 g6 26. b4 Ba7 27.
Bb3 Rc8 28. e4 Ne7 29. exd5 Nxd5 30. Bxd5 exd5 31. Rxd5 Rf7 32. Ne4 Bb8 33. Ng5
Rxf4 34. Re7 Rcf8 35. Ne4 Rg4+ 36. Ng3 Rgf4 37. Rdd7 Rf2+ 38. Kh3 $6 {
Inaccuracy. Kg1 was best.} (38. Kg1 R2f7 39. Rxb7 Be5 40. Ne4 Rf1+ 41. Kg2 Bxc3
42. Rxh7 Bd4 43. Rhd7 Rg1+ 44. Kh3 Be5) 38... R8f7 39. Rxb7 Rxe7 40. Rxe7 Bxg3
41. hxg3 Rxa2 42. c4 Rc2 43. c5 Rc4 44. Rb7 g5 45. g4 h6 46. Kg3 Kf8 47. Kf3
Ke8 48. Rb6 Kd7 49. Rd6+ Kc7 50. Rxa6 Rxb4 51. Rxh6 Rf4+ 52. Kg3 Rc4 53. Kf3
Rf4+ 54. Kg3 Rc4 1/2-1/2

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.08"]
[Round "4.4"]
[White "Mateus Costamilan Tomiello"]
[Black "Diego Saul Rodri Flores Quill"]
[Result "0-1"]
[ECO "A29"]
[WhiteElo "2145"]
[BlackElo "2414"]
[Annotator "Stockfish 16"]
[PlyCount "106"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

{[%evp 0,106,20,4,-23,-30,-22,-19,-19,-30,-8,-28,-18,-40,-58,-24,-24,-27,10,5,
20,20,20,20,48,20,37,54,60,-10,1,12,0,8,-4,-3,-40,-21,-31,-37,-32,-33,-53,-41,
-41,-48,-48,-51,-53,-77,-66,-75,-62,-60,-25,-33,-29,-33,-33,-29,-38,-38,-29,
-47,-47,-48,-51,-50,-35,-50,-52,-52,-47,-54,-53,-46,-42,-66,-43,-100,-106,-97,
-95,-109,-117,-124,-120,-134,-136,-164,-164,-244,-247,-242,-264,-281,-270,-319,
-316,-457,-491,-1465,-1544,-1719,-1780,-29985,-29986,-29987,-29988]} 1. c4 e5
2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. Qc2 Re8 7. O-O e4 8. Ng5 Bxc3 9.
bxc3 Qe7 10. d3 exd3 11. exd3 d6 12. Rb1 Qe2 13. Bd2 Ne5 14. Rfe1 $2 {Mistake.
d4 was best.} (14. d4 Nxc4 15. Rbe1 Qxd2 16. Rxe8+ Nxe8 17. Qxh7+ Kf8 18. Qh5
g6 19. Qh8+ Ke7 20. Qh4 Nf6) 14... Qxd3 15. Qxd3 Nxd3 16. Rxe8+ Nxe8 17. Bd5
Nf6 18. Bxf7+ Kf8 19. Bd5 h6 20. Ne6+ Bxe6 21. Bxe6 b6 22. Bf5 Ne5 23. Bf4 Nxc4
24. Rd1 Re8 25. Kf1 Ne5 26. h4 h5 $6 {Inaccuracy. a5 was best.} (26... a5) 27.
Bc2 Re7 28. Kg2 Ned7 29. Kf3 Ne5+ 30. Kg2 Neg4 31. Bg5 Re2 32. Rd2 Rxd2 33.
Bxd2 Kf7 $6 {Inaccuracy. Ne5 was best.} (33... Ne5) 34. f3 Ne5 35. Bb3+ d5 36.
Bd1 c5 37. Kf2 Ke6 38. Bg5 b5 39. Ke3 $6 {Inaccuracy. a4 was best.} (39. a4
bxa4) 39... a5 40. Be2 $6 {Inaccuracy. Ke2 was best.} (40. Ke2 b4 41. Bd2 Nc4
42. Be1 Nd6 43. Ba4 d4 44. cxd4 c4 45. Bc6 Nf5 46. Bf2 Nd5) 40... b4 41. cxb4
axb4 42. Kd2 g6 43. Bf4 c4 44. Ke3 $6 {Inaccuracy. Be3 was best.} (44. Be3 Nc6)
44... Nc6 45. Bh6 $2 {Mistake. Kd2 was best.} (45. Kd2 Nd7) 45... d4+ 46. Kd2
d3 47. Bd1 $6 {Inaccuracy. Bxd3 was best.} (47. Bxd3 cxd3) 47... Ne5 48. Bf8
Nd5 49. f4 $6 {Inaccuracy. Ke1 was best.} (49. Ke1 c3) 49... c3+ 50. Kc1 d2+
51. Kb1 Nc4 52. Bb3 $6 {Checkmate is now unavoidable. Kc2 was best.} (52. Kc2)
52... Na3+ 53. Ka1 c2 0-1

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.08"]
[Round "4.5"]
[White "Lucas Fonseca Piccoli"]
[Black "Luigy Lira De Siqueira"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "2225"]
[BlackElo "2179"]
[Annotator "Stockfish 16"]
[PlyCount "139"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

{[%evp 0,139,20,19,24,24,19,19,17,17,17,3,17,-36,-19,-50,-21,-14,-12,-12,-15,
-35,5,4,-1,7,23,-10,25,12,10,11,34,-10,60,41,29,45,60,42,95,45,76,44,36,48,49,
1,26,-33,-15,-22,-47,-40,-35,-33,99,33,54,-27,-44,-116,-45,-45,-33,-25,80,-19,
67,56,56,-74,-7,-37,-13,-67,-80,-76,-74,-101,28,-140,-41,-184,-184,-618,-618,
-572,-210,-260,-245,-245,-241,-252,-263,-247,-228,-228,-242,-289,-194,-207,
-197,-197,-177,-177,-182,-182,-42,-40,-40,-40,-40,-40,-40,-40,-40,-47,-45,-46,
-43,-54,-44,-54,-44,-44,-4,-40,-2,0,0,-43,-33,-33,-35,-35,-39,-17,-43,-46,0,0]
} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. Bg5 h6 6. Bh4 d6 7. c3 Be6 8.
Bxe6 fxe6 9. b4 Bb6 10. a4 a6 11. Nbd2 O-O 12. O-O Qe8 13. Nc4 Ba7 14. b5 Ne7
15. Rb1 axb5 16. axb5 Bb8 17. Re1 g5 $6 {Inaccuracy. Ng6 was best.} (17... Ng6
18. Bg3 Nh5 19. d4 exd4 20. cxd4 Ngf4 21. Qb3 Qf7 22. Kh1 Ba7 23. Ra1 g5 24. h3
) 18. Bg3 Qg6 19. Qe2 Nh5 20. d4 Nf4 21. Qd1 exd4 22. cxd4 Qh5 23. Re3 $6 {
Inaccuracy. Bxf4 was best.} (23. Bxf4 Rxf4) 23... Neg6 24. Ra1 $6 {Inaccuracy.
Kh1 was best.} (24. Kh1 g4 25. Ng1 d5 26. Ne5 Nxe5 27. dxe5 d4 28. Reb3 Qg6 29.
Bxf4 Rxf4 30. Rg3 h5) 24... Rxa1 25. Qxa1 g4 26. Nfd2 Qxb5 27. Rb3 Qh5 $2 {
Mistake. Qa6 was best.} (27... Qa6 28. Ra3) 28. Qd1 $2 {Mistake. Rxb7 was best.
} (28. Rxb7 d5) 28... b5 29. Ne3 Ba7 30. Ndf1 $6 {Inaccuracy. d5 was best.} (
30. d5 exd5 31. Rxb5 Ne5 32. Nxd5 Nfd3 33. Qb3 Qf7 34. Ne7+ Kh7 35. Qxf7+ Rxf7
36. Nf5 c6) 30... Qg5 31. d5 h5 32. Rxb5 Ne5 $6 {Inaccuracy. Bb6 was best.} (
32... Bb6 33. Bxf4) 33. Rb2 $6 {Inaccuracy. dxe6 was best.} (33. dxe6 Nf3+)
33... h4 34. Bxf4 Qxf4 35. Qe2 $6 {Inaccuracy. dxe6 was best.} (35. dxe6 Qxe4)
35... Qxe4 36. dxe6 Re8 37. Qb5 Rxe6 38. Rb4 Qg6 39. Qd5 Kh7 40. Qd1 Rf6 41. h3
Rxf2 42. Rb7 $4 {Blunder. Kxf2 was best.} (42. Kxf2 Nd3+ 43. Ke2 Nxb4 44. hxg4
Qe4 45. Qa4 Bb6 46. Qd7+ Kg6 47. Qc8 Nc6 48. Qg8+ Kf6) 42... Rxg2+ 43. Kh1 Ra2
$4 {Blunder. Bxe3 was best.} (43... Bxe3) 44. Rxc7+ Kh6 45. Nxg4+ Nxg4 46. Qxg4
Qxg4 47. hxg4 Bc5 48. Rf7 Kg5 49. Nh2 Ra1+ 50. Kg2 Rg1+ 51. Kf3 Rg3+ 52. Ke4
Re3+ 53. Kd5 Re2 $4 {Blunder. Rd3+ was best.} (53... Rd3+) 54. Rf5+ Kg6 55. Nf3
h3 56. Rh5 Rg2 57. Rxh3 Rxg4 58. Rh8 Kg7 59. Rh4 Rg2 60. Rf4 Rf2 61. Ke6 Re2+
62. Kd5 Re3 63. Kc6 Rd3 64. Ng5 Kg6 65. Ne6 Ba3 66. Rd4 Rc3+ 67. Kd5 Kf6 68.
Rf4+ Ke7 69. Nd4 Rd3 70. Rf3 1/2-1/2

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.08"]
[Round "4.6"]
[White "Christopher Munoz Ramos"]
[Black "Henry Richard Vasquez Vargas"]
[Result "0-1"]
[ECO "E98"]
[WhiteElo "2038"]
[BlackElo "2216"]
[Annotator "Stockfish 16"]
[PlyCount "106"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

{[%evp 0,106,20,20,11,6,36,43,37,49,42,33,44,46,56,38,65,79,82,55,68,23,48,34,
31,31,20,33,68,67,122,91,83,121,112,77,77,87,67,67,67,-10,59,52,97,19,19,13,21,
10,4,22,84,-42,47,97,76,-2,51,76,76,25,72,-13,-159,-163,-290,-407,-394,-394,
-388,-430,-430,-430,-430,-358,-290,-417,-396,-435,-442,-453,-550,-550,-585,
-542,-542,-704,-436,-428,-460,-465,-460,-986,-1123,-1234,-1453,-2677,-29990,
-29991,-29992,-29993,-29992,-29993,-29994,-29997,-29998,-29999,-30000]} 1. d4
Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9.
Ne1 Nd7 10. Be3 f5 11. f3 f4 12. Bf2 g5 13. b4 Rf7 14. c5 Bf8 15. cxd6 $6 {
Inaccuracy. a4 was best.} (15. a4 Nf6) 15... cxd6 16. Nb5 Nf6 17. Rc1 Ng6 18.
Nxa7 Bd7 19. a4 g4 20. a5 g3 21. Bb6 Qe7 $6 {Inaccuracy. Qe8 was best.} (21...
Qe8 22. Rc7 Nh5 23. Qd2 gxh2+ 24. Kxh2 Ng3 25. Rxb7 Qe7 26. Kg1 Qh4 27. Nc6 Bh6
28. Nd3) 22. Bb5 gxh2+ 23. Kxh2 Bxb5 24. Nxb5 Nh5 25. Nd3 Rg7 26. Nf2 $6 {
Inaccuracy. Nc7 was best.} (26. Nc7) 26... Qg5 27. Kg1 Ng3 28. Nh3 Qh5 29. Rf2
Nh4 30. Kh2 Rg6 31. Rc4 $4 {Blunder. Nc7 was best.} (31. Nc7 Nxg2 32. Rxg2 Rxa5
33. bxa5 Qxh3+ 34. Kxh3 Rh6+ 35. Kg4 Rg6+) 31... Nxg2 32. Rxg2 Rh6 33. Kg1 $6 {
Inaccuracy. Rxg3+ was best.} (33. Rxg3+ fxg3+ 34. Kxg3 Qh4+ 35. Kg2 Rg6+ 36.
Kf1 Qxh3+ 37. Ke2 Rg3 38. Kd3 Rxf3+ 39. Kc2 Qg2+) 33... Qxh3 34. Kf2 Rg6 35.
Rc2 $6 {Inaccuracy. Rg1 was best.} (35. Rg1 Ra6 36. Ke1 Rxb6 37. Nc3 Qh2 38.
Ne2 Ra6 39. Rc8 b6 40. Qd3 Qxe2+ 41. Qxe2 Nxe2) 35... Nxe4+ 36. Kg1 Ng3 37. Kf2
Be7 38. Ke1 Bh4 39. Rcf2 Nf5 40. Rxg6+ hxg6 41. Kd2 Bxf2 42. Bxf2 Rc8 43. Qg1
Kf7 44. Qg4 Qh2 45. Qg1 Qh8 46. Nc3 $6 {Inaccuracy. Qg4 was best.} (46. Qg4 Qh2
47. Qg1 Qxg1 48. Bxg1 Rc4 49. Nc3 Rxb4 50. Bb6 Ke8 51. Ne4 Rb3 52. Ng5 Ke7)
46... e4 47. Qc1 $2 {Checkmate is now unavoidable. Bc5 was best.} (47. Bc5 e3+
48. Kc2 dxc5 49. Ne2 Nd4+ 50. Nxd4 cxb4+ 51. Nc6 bxc6 52. d6 Qc3+ 53. Kb1 Qd3+)
47... e3+ 48. Bxe3 fxe3+ 49. Kd3 Qd4+ 50. Ke2 Ng3+ 51. Ke1 Rxc3 52. Qb2 Qd3 53.
Qxc3 Qe2# 0-1

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.08"]
[Round "4.7"]
[White "Labussiere, Yago"]
[Black "Reyes Zavaleta, Fabian Ricardo"]
[Result "0-1"]
[ECO "A16"]
[WhiteElo "2185"]
[BlackElo "2122"]
[PlyCount "90"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. Nf3 g6 5. h4 Bg7 6. h5 Nc6 7. d4 Bf5 8. Rh4
Bf6 9. g4 Bxh4 10. gxf5 e6 11. fxe6 fxe6 12. Qd3 Qe7 13. Qe4 Bf6 14. Bh3 Nxc3
15. bxc3 O-O-O 16. Rb1 Rhe8 17. d5 Bxc3+ 18. Kf1 Na5 19. Qe3 Qf6 20. Qxa7 Rxd5
21. Bg5 Rxg5 22. Nxg5 Qxg5 23. Rd1 Nc6 24. Qa8+ Nb8 25. Rb1 b6 26. Bg2 Kd7 27.
Rd1+ Ke7 28. Qb7 Qc5 29. hxg6 hxg6 30. Qe4 Rf8 31. Bf3 Qf5 32. Qh4+ Qf6 33.
Qh7+ Qg7 34. Qh4+ g5 35. Qc4 Be5 36. Bg4 Qh6 37. e3 Bd6 38. Ke2 Rf6 39. Qe4 Qg6
40. Qa4 Qh7 41. Rf1 Nd7 42. Bf3 Nc5 43. Qc4 Qh4 44. Bg4 Nd7 45. Qe4 Ne5 0-1

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.08"]
[Round "4.8"]
[White "Vazquez, Facundo"]
[Black "Montes Orozco, Miguel Angel"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2407"]
[BlackElo "2097"]
[PlyCount "91"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 a6 6. O-O Nc6 7. e3 Bd7 8. Qe2
b5 9. b3 cxb3 10. axb3 Be7 11. Rd1 O-O 12. Bb2 Re8 13. Nc3 Nb4 14. Ne5 Nbd5 15.
Ne4 Nxe4 16. Bxe4 c6 17. Rdc1 Qc7 18. Qh5 g6 19. Qf3 f6 20. Bxd5 exd5 21. Qxd5+
cxd5 22. Rxc7 Bf5 23. g4 Bc8 24. Nd3 Bxg4 25. b4 Rac8 26. Rac1 Bf5 27. Rxc8
Rxc8 28. Nc5 Rc6 29. f3 Kf7 30. Ra1 Bxc5 31. dxc5 Re6 32. Kf2 Bd3 33. Rd1 Bc4
34. Rd4 f5 35. Rd2 g5 36. Bd4 f4 37. Rd1 Kg6 38. Rg1 Kf5 39. h4 h6 40. hxg5
hxg5 41. Rh1 fxe3+ 42. Bxe3 d4 43. Bxd4 Kf4 44. Re1 Rxe1 45. Kxe1 Kxf3 46. c6
1/2-1/2

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.08"]
[Round "4.9"]
[White "Ribeiro, Matheus Mendes Domi"]
[Black "Sathish, Pranav"]
[Result "1/2-1/2"]
[ECO "A88"]
[WhiteElo "2150"]
[BlackElo "2412"]
[PlyCount "51"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. c4 f5 2. Nf3 Nf6 3. Nc3 g6 4. g3 Bg7 5. Bg2 O-O 6. O-O d6 7. d4 c6 8. d5 e5
9. dxe6 Bxe6 10. Qd3 Kh8 11. Bf4 d5 12. cxd5 Nxd5 13. Rfd1 Na6 14. Nxd5 Bxd5
15. Be5 Qe7 16. Qc3 Rfe8 17. Bd4 Rad8 18. e3 Nc7 19. Bxg7+ Qxg7 20. Qxg7+ Kxg7
21. Nd4 Kf6 22. Bxd5 Rxd5 23. Kf1 g5 24. Ne2 Red8 25. Nc3 Rxd1+ 26. Rxd1
1/2-1/2

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.08"]
[Round "4.10"]
[White "Schnaider, Ilan"]
[Black "Reyes Zavaleta, Cristhian Yamil"]
[Result "1-0"]
[ECO "C09"]
[WhiteElo "2333"]
[BlackElo "1804"]
[PlyCount "47"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Qe7+ 7. Be2 Qc7 8.
O-O Nf6 9. Re1 Be6 10. dxc5 Bxc5 11. Nb3 Bd6 12. h3 Ne4 13. Nbd4 Nxd4 14. Nxd4
O-O 15. Bd3 Bh2+ 16. Kf1 Rae8 17. Qf3 Qe5 18. Qe3 Bd7 19. Nf3 Qc7 20. Qd4 Bd6
21. Be3 Bc6 22. Qxa7 Ra8 23. Qb6 Qc8 24. Nd4 1-0

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.08"]
[Round "4.11"]
[White "Casalaspro, Mathias Andre"]
[Black "Tomiello, Lucas Costamilan"]
[Result "0-1"]
[ECO "B21"]
[WhiteElo "2060"]
[BlackElo "2279"]
[PlyCount "62"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 c5 2. d4 cxd4 3. Qxd4 Nc6 4. Qd3 Nf6 5. Nc3 g6 6. Nf3 Bg7 7. Bg5 h6 8.
Bf4 d6 9. Be2 O-O 10. O-O Be6 11. Rfd1 Rc8 12. Qd2 g5 13. Be3 Ng4 14. Nd4 Nxe3
15. Nxe6 fxe6 16. Qxe3 Bxc3 17. Qxc3 Qb6 18. Bg4 Qxf2+ 19. Kh1 Rf6 20. e5 dxe5
21. Qc4 Rcf8 22. Bxe6+ Kh8 23. h3 Nd4 24. Bd5 Nf5 25. Qc3 g4 26. Qe1 Ne3 27.
Rd3 g3 28. Qxf2 Rxf2 29. Bf3 R8xf3 30. gxf3 g2+ 31. Kh2 Rf1 0-1

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.08"]
[Round "4.12"]
[White "Nascimento, Nicolas Daniel Trin"]
[Black "Silva, Kaua Marques"]
[Result "1/2-1/2"]
[ECO "D30"]
[WhiteElo "1797"]
[BlackElo "2235"]
[PlyCount "198"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. Nf3 Nf6 2. d4 e6 3. c4 d5 4. cxd5 exd5 5. Bf4 Bd6 6. Bxd6 Qxd6 7. e3 Bf5 8.
Bd3 Be4 9. Nc3 O-O 10. O-O Nbd7 11. Rc1 c6 12. Bxe4 dxe4 13. Nd2 Rfe8 14. h3
Nb6 15. a3 a5 16. Qb3 Qc7 17. Nc4 Nbd7 18. Rfd1 b5 19. Nd2 Qd6 20. Qc2 Qe7 21.
Ne2 Rac8 22. Nb3 a4 23. Nc5 Nb6 24. b3 axb3 25. Qxb3 Ra8 26. Nc3 Reb8 27. Ra1
Nbd7 28. Nxd7 Qxd7 29. Rdb1 Ra5 30. Qb4 Rba8 31. Ra2 g6 32. Rba1 Kg7 33. Qc5
Qe6 34. Qb4 R8a6 35. a4 Nd5 36. Nxd5 cxd5 37. Ra3 bxa4 38. Rxa4 Rxa4 39. Rxa4
Rb6 40. Qe1 Rb2 41. Rb4 Rc2 42. Rb1 Qc6 43. Qb4 Qf6 44. Rf1 h5 45. Qb3 Qc6 46.
Qb8 Qe6 47. Qb3 Qc6 48. Qb8 Qe6 49. Qb3 Rc4 50. Qb8 Qf5 51. Qd6 Rc2 52. Qb8 Rc6
53. Rb1 Rf6 54. Rf1 Qg5 55. Qd8 Qf5 56. Qb8 Kh7 57. Qc7 Qe6 58. Qb8 Rf5 59. Qg3
Qf6 60. Qc7 Qh4 61. Qd7 Kg7 62. Qc8 Qf6 63. Qc7 Kh7 64. Qb8 Rg5 65. Kh1 Rf5 66.
Kg1 Kg7 67. Qc7 g5 68. Qg3 Kg6 69. Qb8 Kh7 70. Qg3 Kg6 71. Qb8 Kg7 72. Qg3 Kh7
73. Qc7 g4 74. Qg3 Kg7 75. h4 Qd8 76. Rb1 Qc8 77. Qd6 Qe6 78. Qd8 Qf6 79. Qxf6+
Kxf6 80. Rb6+ Ke7 81. g3 Kd7 82. Rb5 Kc6 83. Rc5+ Kd6 84. Ra5 Rf6 85. Ra6+ Ke7
86. Rxf6 Kxf6 87. Kf1 Ke6 88. Ke2 Kd6 89. Kd2 Kc6 90. Kc2 Kb6 91. Kd1 Kb5 92.
Ke1 Kc4 93. Kf1 Kd3 94. Kg1 Kd2 95. Kh2 Ke1 96. Kg1 Ke2 97. Kg2 Kd2 98. Kh2 f6
99. Kh1 Ke1 1/2-1/2

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.08"]
[Round "4.13"]
[White "Nascimento, Luiz Eduardo Da Tri"]
[Black "Da Fonseca Pinto, Joao Gabriel Alves"]
[Result "1/2-1/2"]
[ECO "C84"]
[WhiteElo "1877"]
[BlackElo "1762"]
[PlyCount "64"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Be7 7. O-O d6 8. Bg5
Na5 9. h3 Nxb3 10. axb3 c5 11. Nbd2 Be6 12. c4 O-O 13. Qc2 h6 14. Be3 Nh7 15.
Nh2 f5 16. f4 fxe4 17. Nxe4 exf4 18. Rxf4 Rxf4 19. Bxf4 d5 20. Nf2 dxc4 21.
bxc4 bxc4 22. dxc4 Qd4 23. Re1 Qxf4 24. Rxe6 Bd6 25. Nf3 Ng5 26. Nxg5 hxg5 27.
Qe4 Qc1+ 28. Qe1 Qxe1+ 29. Rxe1 Rb8 30. Re2 Rb4 31. Ne4 Bf4 32. Nxc5 Rxc4
1/2-1/2

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.08"]
[Round "4.14"]
[White "Errazola, Mauricio"]
[Black "Lima, Carlos Eduardo I De"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "1725"]
[BlackElo "1857"]
[PlyCount "118"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nf6 5. Bf4 a6 6. e3 e6 7. Bd3 Nc6 8. Rc1
Qb6 9. Qd2 Bd7 10. Nf3 Nh5 11. Bg5 h6 12. Bh4 g5 13. Bg3 Nxg3 14. hxg3 Bg7 15.
Na4 Qb4 16. Nc5 Rb8 17. Qxb4 Nxb4 18. Bb1 b6 19. Nxd7 Kxd7 20. a3 Rbc8 21. Rxc8
Rxc8 22. Kd2 Nc6 23. Rc1 Rf8 24. Bd3 b5 25. Rc5 Rb8 26. g4 Kd6 27. b4 e5 28.
dxe5+ Bxe5 29. Rxc6+ Kxc6 30. Nxe5+ Kc7 31. Nxf7 Rb6 32. Bf5 Rf6 33. Ne5 Kd6
34. Nd3 h5 35. f3 hxg4 36. Bxg4 Rf8 37. Nc5 Ra8 38. Kd3 a5 39. Nb7+ Kc6 40.
Nxa5+ Kb6 41. Kd4 Rh8 42. Kxd5 Rh1 43. e4 Rd1+ 44. Ke6 Ra1 45. e5 Rxa3 46. Kf7
Ra4 47. e6 Rxb4 48. e7 Kxa5 49. e8=Q Rc4 50. Qa8+ Kb4 51. Bd7 Rc5 52. Qe4+ Kc3
53. Qe3+ Kc4 54. Qc1+ Kd4 55. Qb2+ Kc4 56. Be6+ Kd3 57. Qb4 Re5 58. Kf6 Re2 59.
Qxb5+ Ke3 1-0

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.08"]
[Round "4.15"]
[White "Cahuapaza Tarapaca, Leonardo"]
[Black "De Mattos, Pedro Benedito Flor"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "1818"]
[PlyCount "53"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. Nf3 d5 2. b3 Nf6 3. Bb2 e6 4. e3 Be7 5. d4 O-O 6. Bd3 c5 7. O-O Nbd7 8. Nbd2
b6 9. Ne5 Bb7 10. f4 Nxe5 11. fxe5 Ne4 12. Nxe4 dxe4 13. Bc4 Bg5 14. Qe2 Qc7
15. a4 Rad8 16. Rfe1 Bd5 17. Bb5 Be7 18. Red1 cxd4 19. exd4 f6 20. c4 Bb7 21.
d5 exd5 22. cxd5 Rxd5 23. Bc4 Rfd8 24. Qxe4 Qc6 25. Rxd5 Rxd5 26. Rd1 Kf8 27.
Bxd5 1-0

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.08"]
[Round "4.16"]
[White "Seccafim, Caic Dos Santos"]
[Black "Reyes Zavaleta, Sergio Gabriel"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "2062"]
[BlackElo "1287"]
[PlyCount "48"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. Nf3 e6 2. b3 c5 3. Bb2 Nf6 4. e3 d5 5. d4 Nc6 6. a3 Be7 7. Bd3 b6 8. Nbd2
Bb7 9. O-O cxd4 10. exd4 Bd6 11. Ne5 Bxe5 12. dxe5 Nd7 13. Re1 Ne7 14. Qg4 g6
15. Nf3 h5 16. Qg3 Nc5 17. Bb5+ Bc6 18. Nd4 Bxb5 19. Nxb5 Nf5 20. Qf4 g5 21.
Qf3 Nh4 22. Qd1 Nf5 23. Nd6+ Nxd6 24. exd6 Qxd6 1-0

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.08"]
[Round "4.17"]
[White "Reimberg, Arthur Bernardo"]
[Black "Nascimento, Kaio Vinicius Da Tr"]
[Result "0-1"]
[ECO "C42"]
[BlackElo "1310"]
[PlyCount "90"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. Nc3 Nxc3 8.
bxc3 O-O 9. O-O Bg4 10. h3 Bh5 11. Re1 Bf6 12. Bb2 Nd7 13. Bf1 c5 14. Qd3 Bg6
15. Qd2 Qc7 16. Bd3 c4 17. Bxg6 hxg6 18. a4 Rfe8 19. a5 Qc6 20. Ba3 Rxe1+ 21.
Rxe1 Qc7 22. Bb4 Nf8 23. Nh2 Ne6 24. Ng4 Bg5 25. Qe2 Bf4 26. Ne5 Bxe5 27. Qxe5
Qc6 28. Qd6 Qxd6 29. Bxd6 Rd8 30. Bb4 Rd7 31. f3 g5 32. Kf2 Kh7 33. g4 Kg6 34.
Kg3 Rd8 35. Re2 Rh8 36. Rh2 f5 37. Kf2 Nf4 38. Kg3 Re8 39. Rf2 Re3 40. Kh2 Kf6
41. Bd6 Rxc3 42. Bxf4 gxf4 43. gxf5 Kxf5 44. Kg2 Ra3 45. Re2 Rxa5 0-1

[Event "U20 Pan-American Chess Championship"]
[Site "Volta Redonda - Rio de Janeir"]
[Date "2023.11.08"]
[Round "4.18"]
[White "De Oliveira, Joao Pedro Almeida"]
[Black "Andriska, Matheus Jose Amante"]
[Result "0-1"]
[ECO "C55"]
[BlackElo "1261"]
[PlyCount "100"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 h6 4. d3 Nf6 5. Nc3 Be7 6. O-O O-O 7. d4 exd4 8.
Nxd4 Nxd4 9. Qxd4 d6 10. h3 c5 11. Qd1 Bd7 12. Bf4 Re8 13. Re1 Bc6 14. a4 Bf8
15. Bd5 Bxd5 16. Nxd5 Nxe4 17. f3 Nf6 18. Rxe8 Nxe8 19. Qd2 Nf6 20. Rd1 Nxd5
21. Qxd5 Qb6 22. b3 Rd8 23. Be3 Re8 24. Kf2 Qb4 25. Qc4 Qxc4 26. bxc4 Be7 27.
a5 Rb8 28. Bf4 Rd8 29. g4 g5 30. Bg3 Kg7 31. Re1 Bf6 32. Rb1 Rd7 33. Ke2 Bc3
34. Be1 Re7+ 35. Kf2 Bxe1+ 36. Rxe1 Rxe1 37. Kxe1 Kf6 38. Ke2 Ke5 39. Ke3 d5
40. cxd5 Kxd5 41. Kd3 b5 42. axb6 axb6 43. c4+ Kc6 44. Ke4 b5 45. cxb5+ Kxb5
46. Kf5 c4 47. Kf6 c3 48. Kxf7 c2 49. Kg6 c1=Q 50. Kxh6 Qf4 0-1

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.08"]
[Round "5.1"]
[White "Faustino Oro"]
[Black "Ivan Excender Soriano Quispe"]
[Result "1/2-1/2"]
[ECO "E05"]
[WhiteElo "2377"]
[BlackElo "2214"]
[Annotator "Stockfish 16"]
[PlyCount "51"]
[EventDate "2023.??.??"]

{[%evp 20,51,6,-12,18,19,22,17,34,4,27,9,23,-4,-5,-4,-7,-15,-6,-22,0,0,0,0,0,0,
0,0,0,3,4,6,6,-17]} 1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 4. O-O Be7 5. d4 O-O 6. c4
dxc4 7. Qa4 a6 8. Qxc4 b5 9. Qc2 Bb7 10. Bg5 Nbd7 {[%cal Bb8d7,Bd7f6,Bf6e4]
[%mdl 32]} 11. Nbd2 h6 {E05: Open Catalan: 5 Nf3 Be7.} 12. Bxf6 $1 Nxf6 13. Nb3
Be4 14. Qc1 Bd5 15. Nc5 Ne4 {[#]} 16. Rd1 $146 ({Predecessor:} 16. Nxe4 Bxe4
17. Rd1 Rc8 18. Qe3 Qd5 19. Nh4 Bxg2 20. Nxg2 Rfd8 21. Nf4 Qd6 {1/2-1/2 (21)
Buhmann,R-Zumsande,M Schopfenheim 1997}) 16... Bxc5 {The position is equal.}
17. dxc5 Qf6 18. Qc2 Rad8 19. Rd3 Ng5 20. Nxg5 hxg5 21. Rad1 Bxg2 22. Kxg2 Qf5
23. R1d2 Rd5 24. Rxd5 Qxc2 25. Rxc2 exd5 26. Kg1 {Accuracy: White = 63%, Black
= 74%.} 1/2-1/2

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.08"]
[Round "5.2"]
[White "Pablo Castro Salgado"]
[Black "Diego Saul Rodri Flores Quilla"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "2150"]
[BlackElo "2414"]
[Annotator "Stockfish 16"]
[PlyCount "137"]
[EventDate "2023.??.??"]

{[%evp 0,137,25,18,17,24,31,21,29,-6,8,23,3,0,0,-6,35,-1,-5,-2,-13,-13,-12,-14,
-6,15,19,-13,-14,-19,-5,6,6,14,8,-7,-7,-9,4,0,3,-5,4,-5,5,4,4,4,52,46,49,48,58,
68,38,37,52,5,0,-19,-9,-19,-12,-8,13,7,-8,-23,-9,-18,-18,-30,-27,-43,-22,-31,
-20,-28,-29,-98,-98,-101,-101,-119,-73,-85,-92,-101,-81,-101,-78,-99,-79,-123,
-132,-113,-118,-136,-39,-82,-29,-66,-32,-7,-22,-14,-2,-8,-8,0,0,0,0,0,0,0,0,
-41,-63,-128,-200,-128,-128,-105,-105,-436,-436,-445,-445,-989,-1202,-1202,
-1325,-1867,-1113,-1202,-2041,-29983,-1605,-29993]} 1. d4 Nf6 2. Nf3 e6 3. Bg5
c5 4. c3 Nc6 5. e3 h6 6. Bh4 Be7 7. Nbd2 b6 8. Bd3 Bb7 9. O-O O-O 10. Nc4 d6
11. a4 cxd4 12. exd4 Nd5 13. Bxe7 $6 {Inaccuracy. Bg3 was best.} (13. Bg3 Rc8
14. Re1 Na5 15. Ncd2 Nf6 16. Qe2 Qc7 17. b4 Bxf3 18. gxf3 Nc6 19. Ba6 Rb8)
13... Ncxe7 14. g3 Rc8 15. Re1 Qc7 16. Qe2 Nf6 17. Ncd2 Rfe8 18. Ba6 Bxa6 19.
Qxa6 Nc6 20. Rad1 Na5 21. Qb5 Qb7 22. Qd3 Qc6 23. Qb5 Qxb5 24. axb5 Re7 25. Ra1
d5 26. Ne5 Ne8 $6 {Inaccuracy. Rec7 was best.} (26... Rec7 27. h4 Ne8 28. Nb1
g6 29. Kg2 h5 30. Re2 Nd6 31. Na3 Kg7 32. f3 Nab7 33. Nc6) 27. b4 Nb7 28. Nc6
Rec7 29. Nxa7 Ra8 30. Nc6 Rxa1 31. Rxa1 Ned6 32. Ra6 Nxb5 33. Rxb6 Nxc3 34. Nb3
Nd6 35. Nba5 Kh7 36. f3 Nc4 37. Ra6 Ne3 38. Kf2 Nc2 39. Ra8 $2 {Mistake. Rb6
was best.} (39. Rb6 g5 40. Rb8 Na3 41. Rb7 Rxb7 42. Nxb7 Ncb5 43. Ke3 Nc2+ 44.
Kd3 Ne1+ 45. Ke3) 39... Nb5 40. Rb8 Ncxd4 41. Rb6 Nxc6 42. Nxc6 Na3 43. Ra6 Nc4
44. f4 Rb7 45. Ke2 g5 46. Kd3 $6 {Inaccuracy. Ra7 was best.} (46. Ra7) 46...
gxf4 47. gxf4 Kg6 48. Kd4 Rb5 $6 {Inaccuracy. h5 was best.} (48... h5 49. Kc5
Kf5 50. b5 Kxf4 51. Ra8 Ke4 52. Nd8 Rc7+ 53. Nc6 Rd7 54. Ra1 h4 55. Re1+) 49.
Ra7 f6 50. Kc3 Nd6 51. Re7 Rb6 52. Nd4 Ne4+ 53. Kb3 Nc5+ 54. Kc3 Ne4+ 55. Kb3
Kh5 56. Nxe6 Kg4 57. Nc7 Rd6 58. b5 $2 {Mistake. Nb5 was best.} (58. Nb5 Rd8
59. Nd4 Rc8 60. Rd7 Kxf4 61. Rxd5 Nd2+ 62. Ka4 Ke4 63. Rd7 Nc4 64. Kb3 Ne5)
58... Kxf4 $2 {Mistake. Kf3 was best.} (58... Kf3 59. Kc2) 59. Kb4 $4 {Blunder.
Ne8 was best.} (59. Ne8) 59... d4 60. Kc4 d3 61. Nd5+ Kf3 62. b6 $4 {Blunder.
Ra7 was best.} (62. Ra7 d2 63. Ra3+ Kf2 64. Rd3 f5 65. b6 Rd7 66. h3 Ke1 67.
Re3+ Kf1 68. Rd3 Kf2) 62... d2 63. Rxe4 Kxe4 64. b7 Rxd5 65. b8=Q d1=Q 66. Qe8+
Kf4 67. Qb8+ Re5 68. Qb2 $6 {Checkmate is now unavoidable. Kc3 was best.} (68.
Kc3 Qc1+) 68... Qe2+ $6 {Lost forced checkmate sequence. Qa4+ was best.} (68...
Qa4+ 69. Kc3 Rc5+ 70. Kd2 Rd5+ 71. Qd4+ Qxd4+ 72. Kc2 Rb5 73. Kc1 Ke3 74. h4
Qd2#) 69. Kd4 $6 {Checkmate is now unavoidable. Qxe2 was best.} (69. Qxe2 Rxe2)
0-1

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.08"]
[Round "5.3"]
[White "Henry Richard Vasquez Vargas"]
[Black "Juan Martin Ibarra"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "2216"]
[BlackElo "2213"]
[Annotator "Stockfish 16"]
[PlyCount "70"]
[EventDate "2023.??.??"]

{[%evp 0,70,25,18,11,2,26,26,33,15,45,48,45,25,14,-38,-14,-23,16,3,5,9,2,-21,
-9,-32,-37,-73,-70,-86,-92,-82,-68,-87,-89,-118,-89,-113,-98,-104,-130,-168,
-153,-192,-187,-234,-154,-290,-245,-261,-219,-219,-214,-247,-256,-301,-354,
-557,-686,-680,-680,-680,-596,-605,-572,-605,-609,-619,-626,-628,-637,-639,
-647]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. g4 h6 8.
Rg1 e5 9. cxd5 cxd5 10. g5 hxg5 11. Nxg5 e4 12. Bd2 Nb6 13. h3 Bf5 14. Nf3 g6
15. Ne5 Rc8 16. Ng4 $2 {Mistake. Qb3 was best.} (16. Qb3 O-O) 16... Be6 $6 {
Inaccuracy. Nh7 was best.} (16... Nh7 17. O-O-O Ng5 18. Kb1 Kf8 19. Be2 Nf3 20.
Rh1 Nc4 21. Bc1 Bb4 22. Bxc4 Rxc4 23. Ne5) 17. Nxf6+ Qxf6 18. Qb3 Kf8 19. a4
Kg7 20. a5 Nc4 21. Bxc4 Rxc4 22. O-O-O b6 23. a6 Rxh3 24. Kb1 Rh2 25. Be1 Qf3
26. Ka1 Rh5 27. Nb1 $2 {Mistake. Bd2 was best.} (27. Bd2 Bd7 28. Rgf1 Rc8 29.
Rde1 Bb8 30. Na2 Bh3 31. Rh1 Qxf2 32. Bb4 Be6 33. Be7 Rxh1) 27... Bd7 28. Bc3
$6 {Inaccuracy. Nc3 was best.} (28. Nc3 Bh2 29. Rf1 Bh3 30. Bd2 Bxf1 31. Rxf1
Qg2 32. Rd1 Qxf2 33. Kb1 Qf3 34. Ka2 Qf5) 28... Ba4 29. Qa2 Bxd1 30. Nd2 Ra4
31. Nxf3 Rxa2+ 32. Kxa2 Bxf3 33. Rc1 Be2 34. Bd2 Bxa6 35. Rc6 Bb8 0-1

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.08"]
[Round "5.4"]
[White "Fabian Ricardo Reyes Zavaleta"]
[Black "Ilan Schnaider"]
[Result "0-1"]
[ECO "D12"]
[WhiteElo "2122"]
[BlackElo "2333"]
[Annotator "Stockfish 16"]
[PlyCount "55"]
[EventDate "2023.??.??"]

{[%evp 0,55,20,17,28,2,30,33,29,26,16,3,8,6,21,21,22,26,37,9,33,38,24,17,23,38,
31,35,32,39,30,37,53,33,39,26,35,34,39,39,54,51,49,-3,-3,-50,29,-66,0,-41,-70,
-125,-125,-143,-132,-543,163,-540]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5.
Nc3 e6 6. Nh4 Be4 7. f3 Bg6 8. Qb3 Qc7 9. Bd2 a5 10. Rc1 Be7 11. Nxg6 hxg6 12.
g3 Nbd7 13. cxd5 Nxd5 14. Kf2 Nxc3 15. Bxc3 Nf6 16. Bd3 O-O 17. a3 Rfd8 18.
Rhd1 Nd5 19. Bd2 Nb6 20. f4 Nd7 21. e4 Nf6 22. Rc4 b5 23. Qxb5 Rxd4 24. Rxc6 $6
{Inaccuracy. Qb3 was best.} (24. Qb3 Rxc4) 24... Qd7 25. Ra6 Rd8 26. Qxd7 R8xd7
27. Ke1 $4 {Blunder. Bxa5 was best.} (27. Bxa5 Rxd3) 27... Rd8 $4 {Blunder.
Rxd3 was best.} (27... Rxd3 28. f5 gxf5 29. exf5 exf5 30. Rxa5 Ne4 31. Re5 Nxd2
32. Rxd2 Rxd2 33. Rxe7 Rd1+ 34. Ke2) 28. Kf2 $4 {Blunder. Bxa5 was best.} (28.
Bxa5 R8d7 29. Bc2 Rxd1+ 30. Bxd1 Nxe4 31. Bc2 Nf6 32. b4 Kh7 33. Rc6 Nd5 34.
Ke2 Ra7) 0-1

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.08"]
[Round "5.5"]
[White "Miguel Angel Montes Orozco"]
[Black "Nathan Felipe Filgueiras"]
[Result "1/2-1/2"]
[ECO "B31"]
[WhiteElo "2097"]
[BlackElo "2323"]
[Annotator "Stockfish 16"]
[PlyCount "144"]
[EventDate "2023.??.??"]

{[%evp 0,144,20,19,60,60,68,66,71,66,48,26,18,8,8,9,-5,-2,-4,-16,13,22,20,9,14,
-3,3,8,22,22,0,5,0,-30,-10,-73,-14,-39,-105,-37,-42,-36,-50,-22,-26,-42,-10,
-20,-40,-49,-53,-56,-54,-39,-76,-86,-98,-85,-41,-54,-12,-12,-12,-39,-11,-6,0,
-7,-1,0,0,0,0,0,3,10,2,-72,-35,-39,25,19,19,19,19,20,19,20,35,45,71,57,51,46,
73,41,46,51,64,29,61,64,77,61,40,39,26,33,49,20,89,27,35,14,26,7,14,-27,1,0,27,
-29,-7,-19,30,34,0,13,26,16,25,48,22,32,38,48,47,57,121,156,217,218,182,230,
298,29,223]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Bxc6 bxc6 6. Re1 Nf6
7. e5 Nd5 8. c4 Nc7 9. Nc3 O-O 10. d4 cxd4 11. Qxd4 Ne6 12. Qh4 f6 13. Ne4 fxe5
14. Neg5 Nxg5 15. Bxg5 Qc7 16. Bxe7 $6 {Inaccuracy. Rad1 was best.} (16. Rad1)
16... Rf4 17. Bd8 $6 {Inaccuracy. Qg5 was best.} (17. Qg5 Rf5 18. Qg3 d6 19.
Bg5 a5 20. Rad1 Be6 21. b3 a4 22. Bd2 Bf7 23. Ng5 axb3) 17... Qd6 $2 {Mistake.
Qb8 was best.} (17... Qxd8) (17... Qb8) 18. Qe7 $2 {Mistake. Qg3 was best.} (
18. Qf6) (18. Qg3 Qb8 19. Bg5 Rf5 20. Rad1 Qxb2 21. Qh4 d5 22. cxd5 cxd5 23.
Rxd5 Be6 24. Rd6 Qxa2) 18... Qxe7 19. Bxe7 Rxc4 20. Nxe5 Rc2 21. Ba3 d5 22. Nd3
Bf5 23. Nb4 Rc4 24. Rac1 Rc8 25. Rxc4 dxc4 26. Rc1 $6 {Inaccuracy. Na6 was
best.} (26. Na6 Rd8 27. h3 h5 28. Nc5 Rd2 29. Ne4 Bxe4 30. Rxe4 Bd4 31. Kf1
Rxf2+ 32. Ke1 Bb6) 26... Be6 27. h3 a5 28. Na6 Bd5 $6 {Inaccuracy. c3 was best.
} (28... c3 29. bxc3 Bxa2 30. Nc5 Rb8 31. f3 Rb5 32. Rd1 Bf8 33. Ra1 Bd5 34.
Ne4 Bg7 35. Rd1) 29. Nc5 Rb8 30. Na4 Kf7 31. Kf1 Bf6 32. f3 g5 33. Rc2 h6 34.
Nc3 Rd8 35. Bc5 Be6 36. Bb6 Ra8 37. Ne4 Be5 38. Bf2 Rb8 39. Be1 a4 40. Bc3 Bf4
41. Bd2 Be5 42. Bc3 Bf4 43. Bd2 a3 44. bxa3 Rb1+ 45. Kf2 Bc7 46. Bb4 Rd1 47.
Ke2 Rg1 48. Kf2 Rd1 49. Ke2 Rg1 50. Kf2 Rd1 51. Ke2 Rd8 52. Rd2 Bd5 53. Nc3 Bf4
54. Rd1 h5 55. Bc5 Kg6 56. Kf2 Bc7 57. Bd4 h4 58. Kf1 Ra8 59. Bc5 Rd8 60. Bd4
Be6 61. Be3 Rd3 62. Rxd3 cxd3 63. Ke1 Ba5 64. Kd2 Bc4 65. Bc5 Kf5 66. Bb4 Bc7
67. Bc5 Bf4+ 68. Be3 Bd6 $4 {Blunder. Bxe3+ was best.} (68... Bxe3+) 69. Bxg5
Bf4+ $2 {Mistake. Bxa3 was best.} (69... Bxa3 70. Bxh4) 70. Bxf4 Kxf4 71. Ne4
Ba6 $6 {Inaccuracy. Ke5 was best.} (71... Ke5 72. Ke3 Ba6 73. a4 Kd5 74. Nf2 d2
75. Kxd2 Bf1 76. Ng4 Ba6 77. Ke3 Bf1 78. Kf2) 72. Nc3 $4 {Blunder. a4 was best.
} (72. a4 Ke5 73. Nc5 Bc8 74. Nxd3+ Kd6 75. a5 Kc7 76. Nc5 Kd6 77. Ne4+ Kc7 78.
Ke3 Be6) 72... Bc4 $4 {Blunder. Kg3 was best.} (72... Kg3 73. Nd1 Kxg2 74. f4
Kxh3 75. Ne3 Kg3 76. f5 Bc8 77. f6 Be6 78. a4 h3 79. a5) 1/2-1/2

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.08"]
[Round "5.6"]
[White "Lucas Costamilan Tomiello"]
[Black "Lucas Fonseca Piccoli"]
[Result "1-0"]
[ECO "C77"]
[WhiteElo "2279"]
[BlackElo "2225"]
[Annotator "Stockfish 16"]
[PlyCount "97"]
[EventDate "2023.??.??"]

{[%evp 0,97,20,19,24,19,19,8,17,-3,-10,-10,-7,-7,11,12,20,1,33,-14,1,-6,2,33,
31,25,41,41,24,4,62,62,50,38,45,7,54,45,76,78,75,74,78,75,77,66,59,47,83,88,93,
109,82,70,63,84,84,63,84,23,17,-20,36,-26,82,0,-25,-28,-32,-51,-40,-25,61,56,
127,42,350,230,230,258,258,231,305,330,334,330,407,469,469,492,1099,1119,1173,
1198,1220,29986,29989,29990,29991,29992]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4
Nf6 5. d3 b5 6. Bb3 Be7 7. O-O d6 8. a4 Bg4 9. Nbd2 Nd4 10. Ba2 O-O 11. h3
Nxf3+ 12. Nxf3 Bh5 13. g4 Bg6 14. Nh4 Nd7 15. Nxg6 hxg6 16. f4 $6 {Inaccuracy.
Bd5 was best.} (16. Bd5 Rc8) 16... exf4 17. Bxf4 Bf6 $6 {Inaccuracy. bxa4 was
best.} (17... bxa4) 18. c3 b4 19. d4 bxc3 20. bxc3 Qe7 21. Qd3 Bg5 22. Qe3 $6 {
Inaccuracy. Rf3 was best.} (22. Rf3 Bxf4 23. Rxf4 g5 24. Rf5 g6 25. Rf2 Kg7 26.
Bd5 Ra7 27. Raf1 f6 28. Rb1 Rb8) 22... Bxf4 23. Rxf4 Kh7 $2 {Mistake. c6 was
best.} (23... c6 24. Raf1) 24. Raf1 f6 25. g5 fxg5 26. Rf7 Rxf7 27. Rxf7 (27.
Rf4 Qd8 28. Rxf7 Qe8 29. Qf2 (29. Be6) 29... Rb8) 27... Qd8 28. Be6 $2 {
Mistake. e5 was best.} (28. e5 dxe5 29. dxe5 c5 30. Qe4 Rb8 31. Qd5 Nf8 32.
Qxd8 Rxd8 33. a5 Nd7 34. e6 Ne5) 28... Qe8 29. Ba2 Rb8 30. Qf2 Qd8 31. h4 $6 {
Inaccuracy. Qg3 was best.} (31. Qg3 Rb2 32. Bd5 Nb6 33. Bc6 Nc4 34. Bd5 Rb1+
35. Kg2 Nb6 36. Bc6 Rb2+) 31... Nf6 32. hxg5 Nh5 33. Qe3 Qe8 34. Rf2 Qxa4 35.
Qf3 Rb5 36. e5 d5 $4 {Blunder. Qa3 was best.} (36... Qa3 37. Rc2 Rb8 38. e6 Qa5
39. d5 Qa4 40. Rh2 Qa3 41. Qe3 Qa4) 37. Bxd5 $4 {Blunder. e6 was best.} (37. e6
) 37... Rb1+ $4 {Blunder. Qa1+ was best.} (37... Qa1+ 38. Kh2 Rxd5 39. Qxd5
Qxc3 40. Rf8 Qd2+ 41. Kg1 Qd1+ 42. Kg2 Qd2+ 43. Kg1) 38. Kh2 Qd1 39. Qxd1 Rxd1
40. Rf8 Rd2+ 41. Kg1 Ng3 42. Bg8+ Kh8 43. Bc4+ Kh7 44. Rf3 Nh5 $6 {Inaccuracy.
Rd1+ was best.} (44... Rd1+ 45. Kg2 Nf5 46. Rh3+ Nh6 47. e6 Rc1 48. Kf2 Rc2+
49. Ke1 Rb2 50. gxh6 Rb8 51. e7) 45. e6 Rd1+ 46. Kf2 Rd2+ 47. Be2 Ng3 $6 {
Checkmate is now unavoidable. Rb2 was best.} (47... Rb2 48. e7) 48. Rxg3 Kg8
49. Rf3 1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.08"]
[Round "5"]
[Board "7"]
[White "De Siqueira, Luigy Lira"]
[Black "Varillas Jimenez, Ivan"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "2179"]
[BlackElo "1985"]
[PlyCount "47"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qf6 5. Be3 Bc5 6. c3 Nge7 7. Bc4 O-O 8. O-O
b6 9. f4 d5 10. e5 Qh6 11. Be2 Nxe5 12. Qd2 Nc4 13. Bxc4 dxc4 14. f5 Qd6 15. f6 gxf6
16. Qe2 Ng6 17. Nd2 Re8 18. Qf3 Qe7 19. Rae1 Ba6 20. Nf5 Qf8 21. Ne4 Bxe3+ 22. Rxe3
Re6 23. Qh5 Rae8 24. Rh3  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.08"]
[Round "5"]
[Board "8"]
[White "Sathish, Pranav"]
[Black "Tomiello, Mateus Costamilan"]
[Result "1/2-1/2"]
[ECO "A12"]
[WhiteElo "2412"]
[BlackElo "2145"]
[PlyCount "87"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. Nf3 d5 2. b3 Bg4 3. Bb2 e6 4. g3 Nf6 5. Bg2 Nbd7 6. c4 c6 7. O-O Be7 8. d3 O-O
9. h3 Bh5 10. g4 Bg6 11. Nh4 a5 12. Nxg6 hxg6 13. a3 Qb6 14. Qc2 Rfe8 15. Nd2 d4
16. Nf3 e5 17. Bc1 Bd6 18. Ng5 Nf8 19. Bd2 c5 20. Rab1 Ne6 21. Nxe6 Rxe6 22. b4 axb4
23. axb4 cxb4 24. Qb3 e4 25. Bxb4 Qxb4 26. Qxb4 Bxb4 27. Rxb4 exd3 28. exd3 Ra3 29.
Rxb7 Rxd3 30. c5 Rc3 31. c6 Ne4 32. c7 Nd6 33. Rb6 Nc8 34. Rb7 Re7 35. Rd1 d3 36.
Bf1 Rexc7 37. Rxc7 Rxc7 38. Rxd3 g5 39. Rd8+ Kh7 40. Rd5 f6 41. Bd3+ g6 42. Kg2 Kg7
43. Rd8 Nb6 44. Be4  1/2-1/2

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.08"]
[Round "5"]
[Board "9"]
[White "Munoz Ramos, Christopher"]
[Black "Vazquez, Facundo"]
[Result "0-1"]
[ECO "D38"]
[WhiteElo "2038"]
[BlackElo "2407"]
[PlyCount "130"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. cxd5 exd5 6. Bg5 h6 7. Bh4 g5 8. Bg3 Ne4
9. Nd2 Nxg3 10. hxg3 c6 11. Qc2 Be6 12. a3 Be7 13. e3 Nd7 14. O-O-O Nb6 15. Bd3 Qd7
16. f4 Qc7 17. Nf3 O-O-O 18. Kb1 Kb8 19. Rc1 f6 20. Qd2 Qd7 21. Qc2 Bd6 22. f5 Bf7
23. Qf2 h5 24. e4 dxe4 25. Bxe4 Rhe8 26. Bc2 Bc7 27. Rcd1 Nc4 28. Rhe1 Ba5 29. Rxe8
Rxe8 30. Na4 Qd5 31. Bd3 Ne3 32. Rg1 Qa2+ 33. Kc1 Qa1+ 34. Bb1 Ba2 35. Nd2 Nc4 36.
Kc2 Nxd2 37. Bxa2 Qxa2 38. Nc5 Qc4+ 39. Kd1 Nb3 40. Nxb3 Qxb3+ 41. Qc2 Qxc2+ 42.
Kxc2 Re1 43. Rxe1 Bxe1 44. g4 hxg4 45. b4 Kc7 46. Kd3 Kd6 47. Ke4 a5 48. bxa5 Bxa5
49. g3 Be1 50. a4 Bxg3 51. Ke3 Kd5 52. Kd3 Bc7 53. Ke3 g3 54. Kf3 Kxd4 55. a5 g4+
56. Kg2 c5 57. Kf1 c4 58. a6 bxa6 59. Kg2 c3 60. Kh1 c2 61. Kg2 Ke3 62. Kh1 c1=R+
63. Kg2 Rc2+ 64. Kg1 Kf3 65. Kh1 Rc1#  0-1

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.08"]
[Round "5"]
[Board "10"]
[White "Cahuapaza Tarapaca, Leonardo"]
[Black "Labussiere, Yago"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "1818"]
[BlackElo "2185"]
[PlyCount "180"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. Bf4 g6 3. Nc3 d5 4. e3 Bg7 5. h4 h5 6. Be2 O-O 7. Nf3 c5 8. Qd2 cxd4
9. exd4 Nc6 10. Ne5 Bf5 11. f3 Rc8 12. O-O-O Nb4 13. Nd3 Bxd3 14. Bxd3 Qa5 15. Kb1
a6 16. Rde1 Nc6 17. Ne2 Qxd2 18. Bxd2 Rfe8 19. c3 Na5 20. Bf4 Nc4 21. Bxc4 Rxc4 22.
Be5 e6 23. Nf4 Rcc8 24. Nd3 Nd7 25. Kc2 Bxe5 26. Nxe5 Nxe5 27. Rxe5 Kg7 28. Re3 Rc6
29. Kd2 Rb8 30. Kd3 Rb6 31. Re2 Rc8 32. Rc1 Rbc6 33. Rec2 Rd8 34. a4 Kf6 35. Ke3
Rd7 36. Kd3 Rc8 37. Re1 b6 38. Rec1 Rd6 39. Ra1 Ke7 40. Rac1 Rcd8 41. Re1 Kd7 42.
Rec1 Ke7 43. Re1 R8d7 44. Ra1 Kd8 45. Rac1 Rc6 46. Ke3 Rc4 47. b3 Rc6 48. Kd3 Ke7
49. Re2 Kf6 50. g3 Rd8 51. Rec2 Rcd6 52. Re2 Rg8 53. Re5 Rc6 54. Rc2 Ke7 55. c4 dxc4+
56. Rxc4 Kd6 57. f4 Rgc8 58. Re1 b5 59. axb5 axb5 60. Rxc6+ Rxc6 61. Kd2 b4 62. Re5
Rc3 63. Re3 Rc6 64. Re5 Rc7 65. Re3 Kd5 66. Re5+ Kxd4 67. Rb5 Ke4 68. Rxb4+ Kf3 69.
Rc4 Rd7+ 70. Kc3 Kxg3 71. b4 Kxh4 72. b5 Kg3 73. Kb4 Rb7 74. Ka5 h4 75. Ka6 Rb8 76.
b6 h3 77. Ka7 Rxb6 78. Kxb6 h2 79. Rc3+ Kg4 80. Rc1 Kxf4 81. Kc5 g5 82. Kd4 g4 83.
Rf1+ Kg3 84. Ke3 Kg2 85. Rf2+ Kg1 86. Rf4 g3 87. Rd4 h1=Q 88. Rg4 Qh2 89. Rc4 Qf2+
90. Kd3 Qf1+  0-1

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.08"]
[Round "5"]
[Board "11"]
[White "Errazola, Mauricio"]
[Black "Ribeiro, Matheus Mendes Domingues"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "1725"]
[BlackElo "2150"]
[PlyCount "66"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be6 6. e3 c6 7. Bd3 Nbd7 8. f4 h6
9. Bh4 g5 10. f5 Bxf5 11. Bxf5 gxh4 12. Qf3 Bd6 13. Nge2 Qe7 14. O-O-O O-O-O 15.
Nf4 Kb8 16. Rhf1 Rhe8 17. Rd3 Nb6 18. e4 dxe4 19. Nxe4 Nxe4 20. Re3 Ng5 21. Rxe7
Nxf3 22. Rxe8 Bxf4+ 23. Kd1 Rxe8 24. Rxf3 Bxh2 25. Bg4 Re4 26. Bh5 Rxd4+ 27. Ke2
Nd5 28. Bxf7 Nf4+ 29. Kf2 Rd2+ 30. Ke3 Rxb2 31. Ke4 Rxg2 32. Ke5 Nh3+ 33. Kf6 Re2
 0-1

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.08"]
[Round "5"]
[Board "12"]
[White "Silva, Kaua Marques"]
[Black "Nascimento, Luiz Eduardo Da Trindade"]
[Result "1-0"]
[ECO "B98"]
[WhiteElo "2235"]
[BlackElo "1877"]
[PlyCount "41"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Nbd7
9. Bc4 Nb6 10. Bb3 O-O 11. O-O-O Qc7 12. Rhe1 h6 13. h4 Nh7 14. Bxe7 Qxe7 15. g4
Bd7 16. g5 Be8 17. gxh6 g6 18. h5 Kh8 19. hxg6 fxg6 20. Nxe6 Rf6 21. Qe3  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.08"]
[Round "5"]
[Board "13"]
[White "Nascimento, Kaio Vinicius Da Trindade"]
[Black "Seccafim, Caic Dos Santos"]
[Result "1-0"]
[ECO "A57"]
[WhiteElo "1310"]
[BlackElo "2062"]
[PlyCount "65"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. b6 d6 6. Nc3 Nbd7 7. e4 g6 8. Bd3 Bg7 9.
Nge2 O-O 10. O-O Nxb6 11. h3 e6 12. Bc2 exd5 13. Nxd5 Nfxd5 14. exd5 a5 15. Nc3 Rb8
16. Rb1 Bb7 17. Re1 Qf6 18. Ne4 Qd8 19. Bg5 Qc7 20. Bf4 Rbd8 21. Bg5 f6 22. Bd2 Bxd5
23. Bxa5 Ba8 24. b4 cxb4 25. Rxb4 Bxe4 26. Bxe4 Rb8 27. Bxb6 Qd7 28. Bc5 Rbd8 29.
Rb7 Qc8 30. Bd5+ Kh8 31. Ree7 Rg8 32. Be3 h5 33. Bh6  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.08"]
[Round "5"]
[Board "14"]
[White "Da Fonseca Pinto, Joao Gabriel Alves"]
[Black "Casalaspro, Mathias Andre"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "1762"]
[BlackElo "2060"]
[PlyCount "100"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Bd3 Qd7 5. Ne2 h5 6. h4 Nh6 7. Bxh6 Rxh6 8. Bxf5 Qxf5
9. Ng3 Qg6 10. Nd2 Na6 11. c3 O-O-O 12. Nf3 c5 13. a3 f6 14. b4 c4 15. b5 Nc7 16.
b6 axb6 17. Rb1 b5 18. O-O Qe8 19. Ra1 e6 20. Qc2 b6 21. Rfb1 Kb7 22. a4 Ra8 23.
axb5 Ba3 24. exf6 gxf6 25. Rxa3 Rxa3 26. Qc1 Qf8 27. Ne2 Rb3 28. Rxb3 cxb3 29. c4
dxc4 30. Qxc4 Qd6 31. Qxb3 Rh8 32. g3 Qd5 33. Qe3 Ra8 34. Nf4 Qf5 35. Nd2 Ra1+ 36.
Kh2 Kb8 37. d5 Nxd5 38. Nxd5 Qxd5 39. Qxb6+ Kc8 40. Qc6+ Kd8 41. Ne4 Qxc6 42. bxc6
Ke7 43. Kg2 Rc1 44. Nd2 Rxc6 45. Nf1 Rc3 46. Ne3 f5 47. Kf3 Kf6 48. Kg2 Rb3 49. Nf1
Rd3 50. Ne3 Ke5  0-1

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.08"]
[Round "5"]
[Board "15"]
[White "Reyes Zavaleta, Cristhian Yamil"]
[Black "Nascimento, Nicolas Daniel Trindade"]
[Result "1/2-1/2"]
[ECO "E18"]
[WhiteElo "1804"]
[BlackElo "1797"]
[PlyCount "47"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Be7 5. Bg2 O-O 6. O-O b6 7. cxd5 exd5 8. Nc3 Bb7
9. Bf4 a6 10. Rc1 Nbd7 11. Ne5 c5 12. dxc5 Nxc5 13. Be3 Qd6 14. Nf3 Rfd8 15. Nd4
Qd7 16. b4 Rac8 17. bxc5 bxc5 18. Nf3 d4 19. Ne5 Qc7 20. Qb3 Bxg2 21. Qxf7+ Kh8 22.
Qe6 Rf8 23. Kxg2 Bd6 24. Nc4  1/2-1/2

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.08"]
[Round "5"]
[Board "16"]
[White "Lima, Carlos Eduardo I De Araujo"]
[Black "Andriska, Matheus Jose Amante"]
[Result "1-0"]
[ECO "A18"]
[WhiteElo "1857"]
[BlackElo "1261"]
[PlyCount "63"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. Nf3 e6 3. c4 Be7 4. Nc3 O-O 5. e4 d6 6. Bd3 Nbd7 7. e5 dxe5 8. dxe5
Ng4 9. Qe2 f6 10. exf6 Bxf6 11. O-O Nge5 12. Nxe5 Bxe5 13. Be3 Nf6 14. Rad1 Qe7 15.
Bg5 Bxc3 16. bxc3 Qf7 17. Qe5 Ng4 18. Qg3 Nf6 19. h3 c6 20. Rd2 Kh8 21. Rfd1 Bd7
22. Qh4 h6 23. Bb1 c5 24. Bxf6 Qxf6 25. Qxf6 Rxf6 26. Rxd7 b6 27. Re7 a6 28. Rdd7
Rf4 29. Rxg7 Rxc4 30. Rg3 Re4 31. Bxe4 Rb8 32. Rh7#  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.08"]
[Round "5"]
[Board "17"]
[White "De Mattos, Pedro Benedito Flores"]
[Black "Reimberg, Arthur Bernardo"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "0"]
[BlackElo "0"]
[PlyCount "50"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 d5 2. Nc3 Nf6 3. Bf4 e6 4. e3 Bd6 5. Bg5 O-O 6. Nf3 h6 7. Bh4 c6 8. Bd3 Nbd7
9. O-O Re8 10. Re1 e5 11. dxe5 Nxe5 12. Nxe5 Bxe5 13. h3 Bd7 14. Qf3 Qc7 15. Rad1
Be6 16. Bg3 Bxg3 17. Qxg3 Qxg3 18. fxg3 Rad8 19. Ne2 c5 20. Bb5 Bd7 21. Bxd7 Rxd7
22. Nf4 d4 23. exd4 Rxe1+ 24. Rxe1 Rxd4 25. Re8+ Kh7  1/2-1/2

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.08"]
[Round "5"]
[Board "18"]
[White "Reyes Zavaleta, Sergio Gabriel"]
[Black "De Oliveira, Joao Pedro Almeida"]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "1287"]
[BlackElo "0"]
[PlyCount "41"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 g6 2. Nf3 Nf6 3. Bg5 Bg7 4. c4 d6 5. Nc3 Nbd7 6. e4 e5 7. dxe5 Nxe5 8. Nxe5
dxe5 9. Qxd8+ Kxd8 10. Nd5 Rg8 11. Nxf6 Bxf6 12. Bxf6+ Ke8 13. O-O-O Be6 14. Be2
g5 15. Rd2 Rg6 16. Bxe5 Kf8 17. Bh5 Rh6 18. Rhd1 Rxh5 19. Bf6 Rb8 20. Rd8+ Rxd8 21.
Rxd8#  1-0

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.09"]
[Round "6.1"]
[White "Diego Saul Rodri Flores Quilla"]
[Black "Ivan Excender Soriano Quispe"]
[Result "1-0"]
[ECO "B36"]
[WhiteElo "2414"]
[BlackElo "2214"]
[Annotator "Stockfish 16"]
[PlyCount "125"]
[EventDate "2023.??.??"]

{[%evp 0,125,80,23,41,52,41,20,21,16,73,22,32,37,22,18,45,14,24,23,8,5,40,39,
39,20,20,7,-2,4,18,27,27,-1,4,9,2,-4,-4,7,6,3,21,-17,7,-26,8,15,55,29,67,7,32,
7,18,18,54,48,48,48,75,48,77,70,58,70,54,62,58,75,77,77,88,85,57,21,41,24,82,
24,82,21,106,21,105,0,105,113,124,106,134,134,134,134,134,134,183,142,145,172,
213,211,211,211,217,221,230,237,220,220,242,232,218,279,286,273,247,239,240,
246,242,246,270,250,250,276,431,449]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6
5. c4 Nf6 6. Nc3 d6 7. f3 Nxd4 8. Qxd4 Bg7 9. Be3 O-O 10. Qd2 a5 11. Bd3 a4 12.
Rb1 Be6 13. Nb5 Nd7 14. Nd4 Nc5 15. Be2 Bd7 16. O-O Qa5 17. Rfd1 Rfc8 18. Bf1
Qxd2 19. Rxd2 Be5 20. g3 h5 21. Kf2 Bg7 22. Rc1 Ne6 23. Ne2 Nc5 24. Nc3 Bc6 25.
Rdc2 Kf8 26. Ke2 Ra6 27. Nd5 Bxd5 28. cxd5 Rb6 29. Rb1 Ra8 30. Kd2 Rb4 31. a3
Rb6 32. Bc4 Bf6 33. Ke2 Rc8 34. f4 Bg7 35. Kf3 $6 {Inaccuracy. Kf1 was best.} (
35. Kf1) 35... Bf6 $6 {Inaccuracy. f5 was best.} (35... f5 36. exf5 gxf5 37.
Bd3 Rb3 38. Bxf5 Ra8 39. Ke2 b5 40. Bd2 Kf7 41. Bc3 Rb8 42. Bxg7) 36. h3 Bg7
37. g4 hxg4+ 38. hxg4 $6 {Inaccuracy. Kxg4 was best.} (38. Kxg4 Nxe4 39. Bxb6
Rxc4 40. Rbc1 f5+ 41. Kf3 Rxc2 42. Rxc2 Kf7 43. Bd8 b5 44. Bb6 Bh8) 38... Kg8
$4 {Blunder. g5 was best.} (38... g5 39. Bf2 Rc7 40. Be3 Rc8) 39. Kg2 $4 {
Blunder. g5 was best.} (39. g5) 39... Kf8 $2 {Mistake. g5 was best.} (39... g5
40. Kf3 Bh8 41. Bf2 Bf6 42. Be3 Bg7 43. Rg2 Bc3 44. Rc2 Bg7) 40. Kf3 $2 {
Mistake. g5 was best.} (40. g5 f6) 40... Kg8 $2 {Mistake. g5 was best.} (40...
g5 41. Bf2 gxf4 42. Kxf4 Ra6 43. Bxa6 Ne6+ 44. dxe6 Rxc2 45. Bxb7 Rxf2+ 46. Ke3
Rxb2 47. Rxb2) 41. Bf2 $2 {Mistake. g5 was best.} (41. g5 Rc7 42. Kg2 f6 43.
gxf6 exf6 44. Bd4 g5 45. Rh1 gxf4 46. Rh5 f5 47. e5 Nd7) 41... Kf8 $2 {Mistake.
g5 was best.} (41... g5 42. Be3 Kf8 43. Bg1 Kg8 44. Be3) 42. Re2 $2 {Mistake.
g5 was best.} (42. g5 Kg8 43. Kg4 f6 44. gxf6 exf6 45. f5 Re8 46. Bxc5 dxc5 47.
fxg6 Rxe4+ 48. Kf3 f5) 42... Kg8 $2 {Mistake. g5 was best.} (42... g5 43. Rc2
Bh8 44. Rh1 Bg7) 43. g5 Kf8 44. e5 Rc7 $6 {Inaccuracy. dxe5 was best.} (44...
dxe5 45. fxe5 Nd7 46. Bxb6 Rxc4 47. b3 axb3 48. Rxb3 Bxe5 49. Re4 Rc2 50. Bd4
Bxd4 51. Rxd4) 45. Rc1 Rc8 46. Rec2 Rc7 $6 {Inaccuracy. Kg8 was best.} (46...
Kg8 47. Bd4) 47. Bd4 Kg8 48. Ke3 Rc8 49. Rh1 Nd7 50. Bxb6 Nxb6 51. exd6 exd6
52. Kd3 Nd7 53. Bb5 Nc5+ 54. Ke2 Rc7 $6 {Inaccuracy. Ra8 was best.} (54... Ra8
55. Kd1 Ra5 56. Bf1 Bd4 57. Rhh2 Bg1 58. Rh3 Bd4 59. Rd2 Bg7 60. Re3 Kf8 61.
Bc4) 55. Re1 f6 56. gxf6 $6 {Inaccuracy. Kd1 was best.} (56. Kd1 fxg5 57. Re8+
Bf8 58. fxg5 Re7 59. Rf2 Rf7 60. Rxf7 Kxf7 61. Re2 Be7 62. Rg2 Bd8) 56... Bxf6
57. Kf3 Rf7 58. Re8+ Kg7 59. Kg4 Bd4 60. Rce2 Bf6 61. Ra8 Bd4 62. Rd8 Bg1 $6 {
Inaccuracy. Bf6 was best.} (62... Bf6 63. Rc8 Re7 64. Rxe7+ Bxe7 65. Ra8 Bf6
66. Bxa4 Bxb2 67. Bc2 Nd7 68. a4 Nf6+ 69. Kf3) 63. Rxd6 1-0

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.09"]
[Round "6.2"]
[White "Juan Martin Ibarra"]
[Black "Faustino Oro"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2213"]
[BlackElo "2377"]
[Annotator "Stockfish 16"]
[PlyCount "137"]
[EventDate "2023.??.??"]

{[%evp 0,137,15,28,52,52,52,21,16,17,36,36,41,41,65,43,43,59,60,39,53,50,61,53,
30,43,35,9,46,17,57,32,45,39,39,23,12,18,28,-3,28,12,13,18,0,2,9,-35,-52,-56,
-68,-70,-73,-52,-37,-65,-55,-57,-61,-44,-46,-66,-50,-57,-39,-21,4,-21,-12,-32,
-21,-56,-66,-63,18,16,10,12,68,56,36,12,30,98,98,114,80,82,169,151,211,222,224,
225,238,238,237,240,236,248,255,250,250,258,258,262,265,258,265,266,273,279,
291,279,330,291,327,304,331,303,329,303,312,233,261,228,261,301,329,327,340,
346,364,364,378,379,386,352,367,376]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4
Nf6 5. Nc3 e5 6. Ndb5 d6 7. Nd5 Nxd5 8. exd5 Nb8 9. c4 Be7 10. Bd3 O-O 11. O-O
a6 12. Nc3 f5 13. f3 Nd7 14. a3 Bg5 15. Qc2 g6 16. b4 b6 17. Na4 Bb7 $6 {
Inaccuracy. Bf6 was best.} (17... Bf6) 18. Bxg5 Qxg5 19. Qc1 Qxc1 20. Raxc1
Rac8 21. Rb1 Rc7 22. Rfc1 Rfc8 23. c5 $6 {Inaccuracy. Rd1 was best.} (23. Rd1
Rb8) 23... b5 24. c6 bxa4 25. Bc4 Nb8 26. cxb7 Rxb7 27. Be2 Rbc7 28. Rxc7 Rxc7
29. Bd1 Rc3 30. Ra1 Nd7 31. Bxa4 Nb6 32. Bc6 Rb3 33. Bb7 Nc4 34. Bxa6 Nxa3 35.
Rc1 Rxb4 36. Rc6 e4 37. fxe4 fxe4 38. Kf2 Rb3 39. Rxd6 Nc2 40. Rd8+ Kg7 41. d6
e3+ 42. Kf3 Nd4+ 43. Ke4 Ne6 $4 {Blunder. Rb6 was best.} (43... Rb6) 44. Re8
Nc5+ 45. Kd4 Nxa6 46. d7 Nb8 $6 {Inaccuracy. Nb4 was best.} (46... Nb4 47. Kc4)
47. d8=Q Nc6+ 48. Kc4 Nxd8 49. Kxb3 Nc6 50. Rxe3 Kf6 51. Kc4 h5 52. Kd5 Ne7+
53. Ke4 Nf5 54. Ra3 Kg5 55. Ke5 h4 56. Rb3 Nh6 57. Ke6 Nf5 58. Kf7 Nd6+ 59. Kg7
Ne8+ 60. Kf8 Nd6 61. Rb6 Nc4 62. Ra6 Kf5 63. Kg7 g5 64. Kh6 g4 65. Kh5 Ne3 66.
Ra5+ Kf4 67. Ra4+ Kf5 68. g3 hxg3 69. hxg3 1-0

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.09"]
[Round "6.3"]
[White "Ilan Schnaider"]
[Black "Luigy Lira De Siqueira"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "2333"]
[BlackElo "2179"]
[Annotator "Stockfish 16"]
[PlyCount "114"]
[EventDate "2023.??.??"]

{[%evp 0,114,28,40,26,18,37,8,27,11,38,4,-22,1,-4,-36,-49,-35,8,-6,-29,15,4,11,
16,15,36,20,49,38,18,6,45,0,0,50,40,24,26,23,-85,-108,-107,-101,-114,-125,-128,
-112,-124,-166,-158,-194,-126,-148,-132,-121,-26,-54,-55,-55,-69,-64,-86,-64,
-58,-56,-14,-41,-30,-24,-11,-18,-29,-35,-28,0,78,73,84,0,-8,0,29,49,92,-41,-36,
-40,-41,-37,-37,-32,-28,-32,-34,-36,-38,-64,-53,-53,-73,-86,-30,-62,-77,-85,
-85,-104,-19,-78,-79,-78,-46,-48,-35,-32,-24]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4
4. Nxd4 Bc5 5. Nb3 Bb6 6. Nc3 Nf6 7. Qe2 O-O 8. Bg5 Nd4 9. Qd2 Nxb3 10. axb3 h6
11. Be3 Bxe3 12. Qxe3 d6 13. f3 Nd7 14. Rxa7 Rxa7 15. Qxa7 Nb6 16. Be2 Qh4+ 17.
g3 Qh3 $6 {Inaccuracy. Qg5 was best.} (17... Qg5) 18. Bf1 $6 {Inaccuracy. Kd2
was best.} (18. Kd2) 18... Qh5 19. Bg2 $4 {Blunder. Kf2 was best.} (19. Kf2 f5)
19... Qc5 $4 {Blunder. Bh3 was best.} (19... Bh3 20. Bxh3 Qxf3 21. Rf1 Qe3+ 22.
Kd1 Ra8 23. Qxa8+ Nxa8 24. Bd7 Nb6 25. Be8 f6 26. Bg6) 20. Qa3 $4 {Blunder.
Qa1 was best.} (20. Qa1 d5 21. Qd1 dxe4 22. fxe4 Nd7 23. Qd2 Ne5 24. Qf2 Qa5
25. O-O c6 26. h3 Rd8) 20... Qe3+ 21. Ne2 Bh3 22. Bxh3 Ra8 23. Qxa8+ Nxa8 24.
Bg2 Nb6 25. Kd1 Nd7 26. Re1 Ne5 27. Rf1 c5 $6 {Inaccuracy. h5 was best.} (27...
h5 28. Nc3 h4 29. Nd5 Qd4+ 30. Kc1 Kf8 31. c3 Qa7 32. Kd2 Qa6 33. Re1 h3 34.
Bh1) 28. Nc3 c4 29. b4 Qa7 30. Kd2 Nc6 31. Nd5 b5 32. f4 Kf8 $2 {Mistake. Qa2
was best.} (32... Qa2 33. Kc3 Kf8 34. Bf3 g6 35. Bg2 h5 36. Bh1 Qa7 37. Kd2
Qd4+ 38. Kc1 h4 39. gxh4) 33. c3 Ne7 34. Ne3 Kg8 35. h4 g6 36. g4 Kh7 37. Nc2
f5 $6 {Inaccuracy. g5 was best.} (37... g5) 38. exf5 gxf5 39. gxf5 Kg7 40. Nd4
Kf6 41. Be4 Qa2 42. Kc2 d5 43. Bf3 Nxf5 44. Nxf5 Kxf5 45. Bxd5 Qa4+ 46. Kd2 Qa7
47. Bc6 Qb6 48. Bg2 Qd6+ 49. Kc1 Kg4 50. f5 Qf6 51. Rh1 Qe5 52. h5 Kxf5 53. Bc6
Kg5 54. Kb1 Qe6 55. Bb7 Qd7 56. Be4 Kf4 57. Bg6 Kg3 1/2-1/2

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.09"]
[Round "6.4"]
[White "Lucas Costamilan Tomiello"]
[Black "Henry Richard Vasquez Vargas"]
[Result "1-0"]
[ECO "B03"]
[WhiteElo "2279"]
[BlackElo "2216"]
[Annotator "Stockfish 16"]
[PlyCount "171"]
[EventDate "2023.??.??"]

{[%evp 0,171,26,37,49,57,78,74,69,16,22,13,56,68,79,64,74,45,80,73,123,84,106,
99,83,-19,124,96,102,79,86,77,83,90,91,81,98,64,54,58,87,75,87,60,64,64,58,20,
18,10,38,-22,33,-14,-10,3,2,-24,32,40,33,-103,37,26,0,0,63,35,65,68,69,68,68,
29,46,49,73,24,29,40,36,-3,13,-31,0,0,0,0,0,0,0,0,34,0,42,-8,0,-21,-10,-75,-75,
-91,0,0,84,104,64,46,48,89,48,45,45,45,45,45,53,77,77,99,113,47,55,54,58,72,74,
54,76,129,287,303,309,133,309,134,229,121,127,127,116,142,148,162,120,120,154,
113,111,78,59,63,79,62,104,71,88,70,88,103,110,129,199,223,246,273,345,387,507,
517,517,537,537,547]} 1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. f4 g6 6. Nc3
Bg7 7. Be3 Be6 8. d5 Bc8 9. Nf3 c6 10. Be2 O-O 11. O-O Bg4 12. e6 $6 {
Inaccuracy. exd6 was best.} (12. exd6 exd6 13. Bd4 Bxd4+ 14. Qxd4 cxd5 15. cxd5
N8d7 16. f5 Bxf3 17. Rxf3 Ne5 18. Rf2 Rc8) 12... f5 $4 {Blunder. fxe6 was best.
} (12... fxe6 13. Ng5) 13. Bd4 $2 {Mistake. a4 was best.} (13. a4 Na6 14. a5
Nc8 15. h3 Bxf3 16. Bxf3 cxd5 17. cxd5 Rb8 18. g4 b6 19. Qe2 Nc5) 13... Bxf3 $6
{Inaccuracy. Bxd4+ was best.} (13... Bxd4+ 14. Qxd4 Na6 15. Kh1 Rc8 16. h3 Bxf3
17. Rxf3 cxd5 18. cxd5 Na8 19. Bxa6 bxa6 20. Qxa7) 14. Bxf3 $6 {Inaccuracy.
Rxf3 was best.} (14. Rxf3) 14... Bxd4+ 15. Qxd4 cxd5 16. cxd5 Na6 17. Rac1 Rc8
18. Nb5 Rc5 19. Rxc5 Nxc5 20. Nc3 $6 {Inaccuracy. b4 was best.} (20. b4 Nca4)
20... Qc7 $6 {Inaccuracy. Nc8 was best.} (20... Nc8 21. h4) 21. Rc1 $6 {
Inaccuracy. Nb5 was best.} (21. Nb5) 21... Na6 22. Ne2 Qb8 23. g4 $6 {
Inaccuracy. a4 was best.} (23. a4 Rc8) 23... fxg4 24. Bxg4 Rc8 25. Rd1 Qc7 26.
f5 Qc5 27. Qxc5 Rxc5 28. Nc3 gxf5 $6 {Inaccuracy. Nc7 was best.} (28... Nc7)
29. Bxf5 Nc7 30. Kh1 $2 {Mistake. Be4 was best.} (30. Be4 Ne8 31. Kf2 Nf6 32.
Bf3 Rc4 33. Rd3 Kg7 34. b3 Rc5 35. Bg2 Kg6 36. Rg3+ Kh6) 30... h6 $4 {Blunder.
Nbxd5 was best.} (30... Nbxd5) 31. Be4 Ne8 $6 {Inaccuracy. Kg7 was best.} (
31... Kg7 32. Rf1 Nbxd5 33. Nxd5 Nxd5 34. Rf7+ Kg8 35. Kg2 b5 36. Kf3 b4 37.
Bxd5 Rxd5 38. Rxe7) 32. Rg1+ Kh8 33. Rg6 Rc8 34. Rxh6+ Kg8 35. Rg6+ Kh8 36. Bf3
Nf6 37. h4 Nc4 38. Rg2 $6 {Inaccuracy. Kg2 was best.} (38. Kg2 Nxb2) 38... Nxb2
39. Ne4 Nxe4 40. Bxe4 $6 {Inaccuracy. Rxb2 was best.} (40. Rxb2 Nc5 41. Rb4 Rf8
42. Kg2 a5 43. Rb5 Rf5 44. Rxa5 Nxe6 45. Ra8+ Rf8 46. Rxf8+ Nxf8) 40... Nc4 41.
Rg5 Ne5 42. Rh5+ Kg8 43. Kg2 b5 44. Rg5+ Kh8 45. Kf2 b4 46. Ke3 a5 47. h5 Rc3+
48. Kf4 Rh3 $4 {Blunder. a4 was best.} (48... a4 49. Rg2 a3 50. h6 b3 51. axb3
Rxb3 52. Rc2 Rb8 53. Ra2 Rf8+ 54. Bf5 Ra8 55. Bc2) 49. Bf5 $4 {Blunder. Rxe5
was best.} (49. Rxe5) 49... Rh2 50. Bb1 $6 {Inaccuracy. Kg3 was best.} (50. Kg3
) 50... Rf2+ $6 {Inaccuracy. a4 was best.} (50... a4 51. Rf5) 51. Ke3 Rb2 52.
Rxe5 Rxb1 53. Rf5 Rd1 $6 {Inaccuracy. a4 was best.} (53... a4 54. Rf8+ Kg7 55.
Rf7+ Kh6 56. Rxe7 Kxh5 57. Rg7 b3 58. axb3 axb3 59. Kd2 b2 60. Rb7) 54. Ke4
Re1+ 55. Kd4 Rd1+ 56. Kc4 Rc1+ 57. Kd3 $6 {Inaccuracy. Kb5 was best.} (57. Kb5
Rc5+ 58. Kb6 a4 59. Rf4 b3 60. Rxa4 bxa2 61. Rxa2 Kg7 62. Ra5 Rc3 63. Ra7 Kf6)
57... Rd1+ $2 {Mistake. Rc7 was best.} (57... Rc7 58. Rf8+ Kg7 59. Ra8 Rc3+ 60.
Kd4 Rh3 61. h6+ Rxh6 62. Kc4 Kf6 63. Kb5 Rh1 64. Rxa5) 58. Kc2 Rd4 59. Kb3 Rd2
$6 {Inaccuracy. Rd3+ was best.} (59... Rd3+ 60. Ka4) 60. Rf8+ Kg7 61. Rf7+ Kh6
62. Rxe7 Rxd5 63. Re8 Re5 64. e7 Kg7 $4 {Blunder. Kh7 was best.} (64... Kh7)
65. h6+ Kh7 $6 {Inaccuracy. Kxh6 was best.} (65... Kxh6 66. Rh8+ Kg5 67. e8=R
Rc5 68. Rh2 a4+ 69. Kxa4 Rc4 70. Rf8 Kg6 71. Rg2+ Kh7 72. Rf5) 66. Kc4 $4 {
Blunder. Ka4 was best.} (66. Ka4 Re2 67. Kxa5 Rxa2+ 68. Kxb4 Re2 69. Kb5 Re1
70. Kc6 d5 71. Kd7 Kxh6 72. Rg8 Re3) 66... Rc5+ $4 {Blunder. d5+ was best.} (
66... d5+) 67. Kd4 $4 {Blunder. Kb3 was best.} (67. Kb3) 67... Re5 68. Kd3 $4 {
Blunder. Kc4 was best.} (68. Kc4) 68... Rd5+ 69. Ke3 Re5+ 70. Kd4 a4 71. Kc4 b3
72. axb3 a3 $4 {Blunder. axb3 was best.} (72... axb3) 73. Kc3 $2 {Mistake. b4
was best.} (73. b4) 73... Re1 $2 {Mistake. Re3+ was best.} (73... Re3+ 74. Kd4)
74. Ra8 $4 {Blunder. b4 was best.} (74. b4) 74... Rxe7 75. Rxa3 Kxh6 76. Ra6
Rd7 77. Kc4 Kg5 78. Rb6 d5+ $4 {Blunder. Kf6 was best.} (78... Kf6 79. Kd5 Ke7
80. Rb8 Rc7 81. b4 Kd7 82. Rb6 Rc1 83. Rxd6+ Kc7 84. Rg6 Kb7 85. Re6) 79. Kd4
Kf5 $6 {Inaccuracy. Rf7 was best.} (79... Rf7) 80. b4 Rd8 $6 {Inaccuracy. Re7
was best.} (80... Re7 81. b5) 81. b5 Rd7 82. Rc6 Rb7 83. b6 Rd7 84. Rc7 Rd6 85.
Kc5 Rd8 86. b7 1-0

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.09"]
[Round "6.5"]
[White "Facundo Vazquez"]
[Black "Fabian Ricardo Reyes Zavaleta"]
[Result "0-1"]
[ECO "E60"]
[WhiteElo "2407"]
[BlackElo "2122"]
[Annotator "Stockfish 16"]
[PlyCount "132"]
[EventDate "2023.??.??"]

{[%evp 0,132,26,20,29,-20,33,3,6,0,13,-5,3,9,9,22,64,12,20,14,54,21,-6,9,34,24,
2,-1,2,-19,1,12,17,8,-19,-19,-17,-36,-52,-41,-9,-75,-76,-50,-49,-57,-90,-79,
-90,-95,-93,-103,-95,-69,-69,-71,-33,-32,8,9,-9,4,23,-61,-41,-41,-35,-28,16,
-62,-96,-99,-91,-141,-99,-99,-96,-99,-110,-98,-85,-97,-93,-89,-89,-95,-103,-88,
-88,-87,-139,-154,-154,-154,-154,-154,-152,-161,-176,-192,-182,-260,-268,-258,
-256,-421,-270,-288,-182,-136,-120,-115,-115,-115,-113,-115,-196,-202,-202,
-221,-197,-198,-210,-212,-234,-229,-237,-370,-378,-395,-409,-454,-450,-448,
-461]} 1. d4 Nf6 2. c4 g6 3. e3 Bg7 4. Nf3 O-O 5. Be2 c5 6. d5 d6 7. Nc3 e6 8.
O-O exd5 9. cxd5 Bg4 10. Nd2 Bxe2 11. Qxe2 Nbd7 12. e4 Re8 13. Nc4 $6 {
Inaccuracy. a4 was best.} (13. a4 a6 14. f3 Rc8 15. Nc4 Ne5 16. Nxe5 Rxe5 17.
a5 Re8 18. Bg5 Qc7 19. Kh1 Rb8) 13... Nb6 14. Bg5 a6 $6 {Inaccuracy. h6 was
best.} (14... h6 15. Nxb6 Qxb6 16. Bxf6 Bxf6 17. Rae1 Re7 18. g3 Rae8 19. h4 a6
20. Qd2 Qa5 21. Qxh6) 15. Nd2 Qc8 16. Rad1 $6 {Inaccuracy. Be3 was best.} (16.
Be3 Ng4) 16... Qg4 17. Qxg4 Nxg4 18. h3 Ne5 19. Ndb1 Nc8 20. a4 Nc4 21. Bc1 Rb8
22. Rfe1 b5 23. axb5 axb5 24. Nd2 Nxd2 25. Rxd2 b4 26. Nd1 Nb6 27. Rde2 c4 28.
Bf4 Red8 29. Ne3 Rbc8 30. Ra1 c3 $6 {Inaccuracy. b3 was best.} (30... b3) 31.
b3 Bd4 32. Nc2 Bc5 33. Ra6 Nc4 $6 {Inaccuracy. Rb8 was best.} (33... Rb8 34.
Kf1 f6 35. Ne1 Ra8 36. Rea2 f5 37. Rxa8 Nxa8 38. Bg5 Re8 39. e5 dxe5 40. Ra6)
34. Nxb4 $6 {Inaccuracy. bxc4 was best.} (34. bxc4) 34... Bxb4 35. bxc4 Rxc4
36. Rc6 Rxc6 37. dxc6 Rc8 38. Rc2 Rxc6 39. f3 f5 40. Kf2 $6 {Inaccuracy. exf5
was best.} (40. exf5) 40... Rc4 41. Ke3 d5 42. Kd3 fxe4+ 43. fxe4 Rxe4 44. Be3
Rc4 45. Bd4 Kf7 46. Re2 Rc6 47. g4 $6 {Inaccuracy. Re1 was best.} (47. Re1 Rc4
48. Re2 h5 49. Re1 g5 50. Re2 Rc6 51. Re1 Rc7 52. Rf1+ Ke8 53. Be3 Be7) 47...
Ra6 48. h4 Ra1 49. Be3 Rh1 50. Rf2+ Ke6 51. Bg5 Rg1 52. Rf4 $6 {Inaccuracy.
Re2+ was best.} (52. Re2+ Kd7 53. Bh6 Kc6 54. h5 Rxg4 55. hxg6 hxg6 56. Re6+
Kb5 57. Re5 Rg3+ 58. Kd4 Ka4) 52... Rg3+ 53. Kd4 Be7 54. Bxe7 Kxe7 55. Kxd5 c2
56. Re4+ Kf7 57. Rc4 Rxg4 58. Rxc2 $6 {Inaccuracy. Rc7+ was best.} (58. Rc7+
Kf6 59. h5 Rg5+ 60. Ke4 Rxh5 61. Kf4 Rf5+ 62. Kg3 h5 63. Rxc2 Kg5 64. Rg2 h4+)
58... Rxh4 59. Ke5 Rh5+ 60. Kf4 Rf5+ 61. Kg4 h5+ 62. Kh4 Rf4+ 63. Kg5 Rg4+ 64.
Kh6 h4 65. Rh2 Kf6 66. Rf2+ Ke5 0-1

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.09"]
[Round "6.6"]
[White "Yago Labussiere"]
[Black "Nathan Felipe Filgueiras"]
[Result "1-0"]
[ECO "A22"]
[WhiteElo "2185"]
[BlackElo "2323"]
[Annotator "Stockfish 16"]
[PlyCount "83"]
[EventDate "2023.??.??"]

{[%evp 0,83,37,-14,-21,-12,-14,-17,13,10,76,3,51,0,0,14,36,21,26,25,37,25,34,
39,39,34,36,49,46,45,55,52,38,44,46,46,53,38,90,80,79,79,83,58,64,73,102,84,78,
52,125,46,112,93,118,131,129,138,120,57,165,71,330,88,726,502,839,951,29989,
563,563,294,332,108,29995,918,1324,1753,29977,29978,29979,29980,29981,29982,
29983,29984]} 1. c4 e5 2. Nc3 Nf6 3. Nf3 e4 $6 {Inaccuracy. Nc6 was best.} (
3... Nc6 4. e3 Bb4 5. Qc2 O-O 6. Nd5 Re8 7. Ng5 g6 8. Nxf6+) 4. Ng5 b5 5. d3
bxc4 6. dxc4 $6 {Inaccuracy. dxe4 was best.} (6. dxe4 Nc6 7. e3 h6 8. Nf3 Bb4
9. Bxc4 O-O 10. Bd2 Bxc3) 6... Bb4 $6 {Inaccuracy. Bb7 was best.} (6... Bb7 7.
Qb3 Bc6 8. Qc2 Qe7 9. a3 a5 10. Be3 Ng4 11. Bf4) 7. Bd2 Bxc3 8. Bxc3 h6 9. Nh3
O-O 10. e3 d6 11. Nf4 Nc6 12. Be2 Qe7 13. O-O Bb7 14. Rc1 Ne5 15. Nd5 Qd8 $6 {
Inaccuracy. Nxd5 was best.} (15... Nxd5 16. cxd5 Qg5 17. h4 Qf5 18. Bxe5 Qxe5
19. b3 Bxd5 20. Rxc7 a5 21. Bc4 Be6 22. Bxe6) 16. Qd2 Nfd7 17. Rfd1 Re8 18. b4
f5 $6 {Inaccuracy. a5 was best.} (18... a5 19. bxa5) 19. c5 dxc5 20. bxc5 $6 {
Inaccuracy. Bxe5 was best.} (20. Bxe5 Nxe5 21. Rxc5 c6 22. Nf4 Qxd2 23. Rxd2 a5
24. bxa5 Ba6 25. Bh5 Nd3 26. Rxf5 Re7) 20... Kh7 21. Ba5 Rc8 $2 {Mistake. Bxd5
was best.} (21... Bxd5) 22. Nb4 $4 {Blunder. Nxc7 was best.} (22. Nxc7 Rg8 23.
Qd6 Qf6 24. Bb5 Bc6 25. Bxc6 Nxc6 26. Qxd7 Nxa5 27. Nd5 Qe5 28. Qxa7 Nc6) 22...
Re6 23. c6 Nxc6 24. Qd5 Qf6 $2 {Mistake. Re5 was best.} (24... Re5 25. Nxc6
Rxd5 26. Nxd8 Rxd8 27. Rxd5 Bxd5 28. Bxc7 Rf8 29. a4 Bb7 30. Bb5 Nf6 31. Be5)
25. Nxc6 $2 {Mistake. Qxd7 was best.} (25. Qxd7 Nxa5 26. Nd5 Qe5 27. Nf4 Re7
28. Qa4 Ree8 29. Bh5 Red8 30. Rxd8 Rxd8 31. h4 Bc8) 25... Bxc6 $6 {Inaccuracy.
Nb6 was best.} (25... Nb6 26. Bxb6 cxb6 27. Qd7 Rexc6 28. Rxc6 Qxc6 29. Qxf5+
Qg6 30. Qd7 Rc2 31. Qxb7 Rxe2 32. Qxa7) 26. Rxc6 Rxc6 27. Qxd7 Rb8 28. Bf1 $6 {
Inaccuracy. g3 was best.} (28. g3 Qg6) 28... Rb2 29. g3 Rxa2 $6 {Inaccuracy.
Rc5 was best.} (29... Rc5 30. Rd5 Rxd5 31. Qxd5 c6 32. Qc5 Qe6 33. a4 Ra2 34.
Bb4 Qd5 35. Qxa7 Ra1 36. Bc3) 30. Bb4 a5 $2 {Mistake. Rcc2 was best.} (30...
Rcc2 31. Bh3 Kg6 32. Qe8+ Kh7 33. Be1 Rc5 34. Qc8 Kg6 35. Kg2 Rb2 36. Rd7 Rbb5
37. Qe8+) 31. Bf8 $6 {Inaccuracy. Bh3 was best.} (31. Bh3 axb4 32. Bxf5+ Qg6
33. Bxg6+ Rxg6 34. Qf5 Ra8 35. h4 Kh8 36. Qxg6 Rg8 37. Qxe4 c5) 31... Rcc2 $4 {
Blunder. a4 was best.} (31... a4 32. Bxg7 Qe6 33. Qxe6 Rxe6 34. Bc4 Rc6 35.
Bxa2 Kxg7 36. Rd4 a3 37. Ra4 Rc3 38. Kg2) 32. Bxg7 Qc6 $2 {Checkmate is now
unavoidable. Rd2 was best.} (32... Rd2 33. Bxf6+ Rxd7 34. Rxd7+ Kg6 35. Be5 h5
36. Bc4 f4 37. Bxa2 fxe3 38. fxe3 c6 39. Bf4) 33. Qe7 $2 {Lost forced
checkmate sequence. Qf7 was best.} (33. Qf7 Qg6 34. Qf8 Qd6 35. Rxd6 cxd6 36.
Bd4 Rc7 37. Bc4 Ra1+ 38. Bxa1 d5 39. Qxf5+ Kg8) 33... Rxf2 $2 {Checkmate is
now unavoidable. Kg6 was best.} (33... Kg6 34. h4) 34. Be5+ $2 {Lost forced
checkmate sequence. Bf6+ was best.} (34. Bf6+ Kg6 35. Qg7+ Kh5 36. g4+ fxg4 37.
Qf7#) 34... Kg6 35. Qg7+ Kh5 36. Bf6 $6 {Inaccuracy. g4+ was best.} (36. g4+
fxg4 37. Bf4 Rad2 38. Qf7+ Qg6 39. Qd5+ Rxd5 40. Rxd5+ Qg5 41. Bxg5 g3 42. Bf4+
Kg4) 36... Qe8 $4 {Checkmate is now unavoidable. Qe6 was best.} (36... Qe6 37.
h3 c6 38. Be5 Rac2 39. Bf4 a4 40. Qf8 a3 41. Qxa3 Rfd2 42. Rxd2 Rxd2 43. Qc3)
37. Bh3 $2 {Lost forced checkmate sequence. g4+ was best.} (37. g4+ fxg4 38.
Rd5+ Qe5 39. Qf7#) 37... Qg6 $2 {Checkmate is now unavoidable. Rg2+ was best.}
(37... Rg2+ 38. Bxg2 Qg6 39. Qe7 Re2 40. Rf1 Rxe3 41. Rf4 Re1+ 42. Kf2 Qg8 43.
Kxe1) 38. g4+ fxg4 39. Rd5+ Rf5 40. Rxf5+ Qxf5 41. Qf7+ Qg6 42. Bxg4+ 1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.09"]
[Round "6"]
[Board "7"]
[White "Ribeiro, Matheus Mendes Domingues"]
[Black "Montes Orozco, Miguel Angel"]
[Result "1/2-1/2"]
[ECO "A12"]
[WhiteElo "2150"]
[BlackElo "2097"]
[PlyCount "44"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 Bf5 4. O-O e6 5. c4 c6 6. b3 Be7 7. Bb2 O-O 8. d3 h6 9.
Nbd2 Bh7 10. Ne5 a5 11. Ndf3 Na6 12. a3 Qb6 13. Rb1 Rfd8 14. Qc2 Ne8 15. Bh3 Nec7
16. cxd5 cxd5 17. Bd4 Qd6 18. b4 axb4 19. axb4 Nxb4 20. Rxb4 Qxb4 21. Qxc7 Rdc8 22.
Qd7 Rd8  1/2-1/2

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.09"]
[Round "6"]
[Board "8"]
[White "Sathish, Pranav"]
[Black "Castro Salgado, Pablo"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2412"]
[BlackElo "2150"]
[PlyCount "91"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. Nf3 d5 2. b3 Bg4 3. Bb2 Nd7 4. e3 e6 5. h3 Bh5 6. d3 c6 7. Nbd2 a5 8. a3 Ngf6
9. Be2 h6 10. Nh4 Bxe2 11. Qxe2 Bd6 12. e4 Be5 13. d4 Nxe4 14. Nxe4 Qxh4 15. dxe5
Qxe4 16. Qxe4 dxe4 17. O-O-O a4 18. b4 c5 19. Rhe1 cxb4 20. Rxe4 b3 21. Rc4 b6 22.
Rd6 Ke7 23. Rc7 Rhd8 24. cxb3 Ke8 25. b4 Rab8 26. Bd4 b5 27. Kc2 Nf8 28. Rxd8+ Rxd8
29. Bc5 Ng6 30. Bd6 Rb8 31. g3 Rb6 32. Kc3 Rb8 33. Kd4 h5 34. Rxf7 Kxf7 35. Bxb8
Ne7 36. Kc5 Nd5 37. Kxb5 Nc3+ 38. Ka5 Ke8 39. Ba7 h4 40. gxh4 Kd7 41. Bd4 Ne2 42.
Be3 Nc3 43. b5 Kc7 44. Ka6 Nd5 45. Ba7 Kc8 46. b6  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.09"]
[Round "6"]
[Board "9"]
[White "Casalaspro, Mathias Andre"]
[Black "Silva, Kaua Marques"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2060"]
[BlackElo "2235"]
[PlyCount "52"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. Nc3 d5 3. Bf4 c5 4. e4 cxd4 5. Qxd4 Nc6 6. Bb5 Bd7 7. Bxc6 Bxc6 8. e5
Nd7 9. e6 fxe6 10. Nf3 Qb6 11. Qd2 g5 12. Be3 Qxb2 13. O-O Qa3 14. Nd4 Bg7 15. Ndb5
Bxb5 16. Nxb5 Qa4 17. Nc7+ Kf8 18. f4 Bxa1 19. c3 Qc6 20. fxg5+ Kg7 21. g6 hxg6 22.
Bd4+ Nf6 23. Nxa8 Qd6 24. Qg5 Qxh2+ 25. Kf2 Rh5 26. Qd2 e5  0-1

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.09"]
[Round "6"]
[Board "10"]
[White "Piccoli, Lucas Fonseca"]
[Black "Varillas Jimenez, Ivan"]
[Result "1-0"]
[ECO "A14"]
[WhiteElo "2225"]
[BlackElo "1985"]
[PlyCount "119"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. c4 e6 2. Nf3 d5 3. b3 Nf6 4. g3 Be7 5. Bg2 O-O 6. O-O c5 7. Bb2 Nc6 8. e3 d4 9.
exd4 cxd4 10. Re1 Re8 11. d3 Bf8 12. Ba3 e5 13. Bxf8 Kxf8 14. Na3 h6 15. Nc2 a5 16.
h3 Bf5 17. g4 Bh7 18. Nh4 e4 19. Nf5 Bxf5 20. gxf5 e3 21. fxe3 dxe3 22. d4 Qd7 23.
d5 Ne7 24. Nxe3 Nxf5 25. Nxf5 Qxf5 26. Qd4 Nd7 27. Rf1 Qe5 28. Qf2 Qe3 29. d6 Nc5
30. Rad1 Rad8 31. Rfe1 Qxf2+ 32. Kxf2 Rxe1 33. Kxe1 Ke8 34. a3 Nxb3 35. Bxb7 Kd7
36. Rd5 Rb8 37. Ba6 Kc6 38. Bb5+ Kb6 39. d7 Rd8 40. Re5 Nd4 41. Re8 Kc7 42. Ba4 Ne6
43. Re7 Nc5 44. Bb5 Nxd7 45. c5 Kc8 46. c6 Nb8 47. c7 Rd5 48. cxb8=Q+ Kxb8 49. a4
g5 50. Rxf7 h5 51. Rh7 h4 52. Ke2 Rf5 53. Rg7 Ka8 54. Ke3 Kb8 55. Ke4 Rc5 56. Rf7
Kc8 57. Rf5 Rc3 58. Bd3 Rc1 59. Rxg5 Rh1 60. Kf4  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.09"]
[Round "6"]
[Board "11"]
[White "Tomiello, Mateus Costamilan"]
[Black "Nascimento, Kaio Vinicius Da Trindade"]
[Result "1-0"]
[ECO "D34"]
[WhiteElo "2145"]
[BlackElo "1310"]
[PlyCount "67"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. c4 Nf6 2. g3 e6 3. Bg2 c5 4. Nf3 Nc6 5. O-O d5 6. cxd5 exd5 7. d4 Be6 8. Nc3 Be7
9. Be3 c4 10. Ne5 Qb6 11. b3 Bb4 12. Na4 Qa6 13. bxc4 dxc4 14. Rb1 Bd6 15. d5 Nxe5
16. dxe6 Rd8 17. exf7+ Kxf7 18. Rxb7+ Be7 19. Qc2 Rd7 20. Rxd7 Nexd7 21. Bd4 Rb8
22. e4 Bd6 23. f4 Rb4 24. Nc3 Bc5 25. Bxc5 Nxc5 26. e5 Nd3 27. exf6 Qb6+ 28. Kh1
Rb2 29. Qd1 g6 30. Ne4 Qd4 31. f5 Qe3 32. fxg6+ hxg6 33. Qg4 Ne5 34. Ng5+  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.09"]
[Round "6"]
[Board "12"]
[White "Nascimento, Nicolas Daniel Trindade"]
[Black "Munoz Ramos, Christopher"]
[Result "1/2-1/2"]
[ECO "D30"]
[WhiteElo "1797"]
[BlackElo "2038"]
[PlyCount "86"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. cxd5 exd5 5. Bf4 Bd6 6. Bxd6 Qxd6 7. e3 O-O 8. Bd3
b6 9. O-O Nbd7 10. Nc3 Qe7 11. Rc1 Bb7 12. Bb1 c5 13. dxc5 Nxc5 14. Nd4 Rfd8 15.
Nce2 Rac8 16. Ng3 g6 17. a3 a6 18. Ba2 Nce4 19. Nge2 Qe5 20. Nf4 h5 21. Qe2 b5 22.
h3 Qd6 23. Nd3 Nd7 24. Bb1 Re8 25. Rxc8 Rxc8 26. Rc1 Rc4 27. Ba2 Rxc1+ 28. Nxc1 Qc7
29. Qc2 Qxc2 30. Nxc2 Nb6 31. Nd3 Kf8 32. Nd4 Ke7 33. f3 Ng5 34. b3 Kd6 35. Kf2 Nd7
36. Ke2 Nc5 37. Nxc5 Kxc5 38. b4+ Kd6 39. Nb3 Ne6 40. Kd3 Bc8 41. Nd4 Bd7 42. Bb3
Ke5 43. Nxe6 fxe6  1/2-1/2

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.09"]
[Round "6"]
[Board "13"]
[White "Lima, Carlos Eduardo I De Araujo"]
[Black "Cahuapaza Tarapaca, Leonardo"]
[Result "0-1"]
[ECO "D15"]
[WhiteElo "1857"]
[BlackElo "1818"]
[PlyCount "128"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. c4 c6 3. Nc3 d5 4. Nf3 a6 5. cxd5 cxd5 6. e3 Nc6 7. h3 e6 8. Bd3 Be7
9. O-O O-O 10. Re1 b5 11. e4 dxe4 12. Nxe4 Nb4 13. Nxf6+ Bxf6 14. Be4 Nd5 15. Qd3
h6 16. Bd2 Bb7 17. Rad1 Qe7 18. Qe2 Rfd8 19. Bb1 Qf8 20. Ne5 g6 21. Qg4 Ne7 22. Ba5
h5 23. Qe2 Rdc8 24. Nd7 Qg7 25. Nb6 Bxd4 26. Nxa8 Bxa8 27. Rc1 Bxb2 28. Rxc8+ Nxc8
29. Qc2 Ne7 30. Rd1 Bd5 31. Qc7 Qf6 32. Qb8+ Kg7 33. Bd8 Qg5 34. g3 Bf6 35. Qd6 Nf5
36. Bxf6+ Qxf6 37. Qf4 Ne7 38. Qe3 Nc6 39. Be4 Bxe4 40. Qxe4 Ne5 41. Kg2 Nc4 42.
Rd7 e5 43. Qd3 Qc6+ 44. f3 Qf6 45. h4 Qc6 46. Rd8 Qf6 47. Ra8 Qb6 48. Qd7 Qe3 49.
Qd1 Nd6 50. Rd8 Nf5 51. Rd3 Qc5 52. Qe2 Nd4 53. Qe3 b4 54. f4 Qc6+ 55. Kf2 Nb5 56.
Qxe5+ f6 57. Qd5 Qb6+ 58. Kf3 Qg1 59. Qd7+ Kh6 60. Qc8 Qf1+ 61. Ke4 Qe2+ 62. Kd5
Qxd3+ 63. Ke6 Qd6+ 64. Kf7 Qc7+  0-1

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.09"]
[Round "6"]
[Board "14"]
[White "Reyes Zavaleta, Cristhian Yamil"]
[Black "Errazola, Mauricio"]
[Result "1-0"]
[ECO "E04"]
[WhiteElo "1804"]
[BlackElo "1725"]
[PlyCount "113"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 d5 2. c4 e6 3. g3 Nf6 4. Bg2 dxc4 5. Nf3 Bb4+ 6. Bd2 c5 7. Bxb4 cxb4 8. Ne5
O-O 9. O-O Nd5 10. Nxc4 b5 11. Ne5 Bb7 12. Nd3 a5 13. Nc5 Bc6 14. Nd2 Nd7 15. Rc1
Rc8 16. Nde4 N7b6 17. Nd3 Qe7 18. Ne5 Ba8 19. Nc5 Rfd8 20. Qd3 f6 21. Nf3 e5 22.
e4 Nc7 23. Bh3 Rb8 24. d5 Nc4 25. Nb3 Nxb2 26. Qc2 Nc4 27. Nxa5 Nxa5 28. Qxc7 Qxc7
29. Rxc7 Rb7 30. Rfc1 Nc4 31. Rxb7 Bxb7 32. Rb1 Nd6 33. Be6+ Kf8 34. Rxb4 Ra8 35.
Rb2 Ke7 36. Nd2 Kd8 37. Rc2 Ra4 38. f3 Bc8 39. Bxc8 Nxc8 40. Nb3 Nb6 41. Nc5 Ra7
42. Rb2 Nc4 43. Rxb5 Rxa2 44. Ne6+ Kd7 45. Rc5 Nd2 46. Rc7+ Kd6 47. Rc3 f5 48. Rc6+
Kd7 49. Rc7+ Kd6 50. Rc6+ Kd7 51. Rc3 fxe4 52. Nc5+ Ke7 53. Nxe4 Nb1 54. d6+ Ke6
55. Rd3 Kd7 56. Nc5+ Kd8 57. d7  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.09"]
[Round "6"]
[Board "15"]
[White "Seccafim, Caic Dos Santos"]
[Black "De Mattos, Pedro Benedito Flores"]
[Result "1-0"]
[ECO "C33"]
[WhiteElo "2062"]
[BlackElo "0"]
[PlyCount "30"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 e5 2. f4 exf4 3. Bc4 Qh4+ 4. Kf1 Nf6 5. c3 d6 6. d3 Nc6 7. Nf3 Qh6 8. Qb3 g5
9. h4 Ne5 10. Nxg5 Nh5 11. Bxf7+ Nxf7 12. Nxf7 Ng3+ 13. Kg1 Qh5 14. Nxh8 Nxh1 15.
Bxf4 Bg7  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.09"]
[Round "6"]
[Board "16"]
[White "Reyes Zavaleta, Sergio Gabriel"]
[Black "Da Fonseca Pinto, Joao Gabriel Alves"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "1287"]
[BlackElo "1762"]
[PlyCount "118"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d5 4. e3 e6 5. a3 c5 6. c3 Bd6 7. Bg3 Nc6 8. Nf3 O-O
9. Nbd2 Nxd2 10. Qxd2 c4 11. Be2 f5 12. Qc2 b5 13. O-O Bxg3 14. hxg3 Bd7 15. b3 Qc7
16. Nd2 a5 17. bxc4 bxc4 18. a4 Rfb8 19. Rfb1 Be8 20. Rb5 Rxb5 21. axb5 Na7 22. g4
g6 23. gxf5 exf5 24. Bf3 Bf7 25. b6 Qxb6 26. Nxc4 Qc7 27. Nxa5 Nb5 28. c4 Rxa5 29.
Rxa5 Qxa5 30. cxb5 Qxb5 31. Qc8+ Kg7 32. Qc7 h5 33. Qe5+ Kg8 34. Qg3 Kh7 35. Qg5
Qa5 36. g3 Qb5 37. Qe7 Kg8 38. Qd8+ Kg7 39. Qc7 Kg8 40. Qc5 Qb3 41. Kg2 Qa2 42. Qc8+
Kg7 43. Qb8 Qc4 44. Qe5+ Kg8 45. Qf6 Qa2 46. Qd8+ Kg7 47. Qc7 Kg8 48. Qe5 Qc4 49.
Qf6 Qa2 50. Qd8+ Kg7 51. Qc7 Kg8 52. Qc3 Kg7 53. Bd1 Qa8 54. Qb4 Qd8 55. Qc5 h4 56.
Bb3 hxg3 57. fxg3 Qd7 58. Qb4 Qe6 59. Bc2 Qxe3  1/2-1/2

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.09"]
[Round "6"]
[Board "17"]
[White "Nascimento, Luiz Eduardo Da Trindade"]
[Black "De Oliveira, Joao Pedro Almeida"]
[Result "1/2-1/2"]
[ECO "C60"]
[WhiteElo "1877"]
[BlackElo "0"]
[PlyCount "100"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O g6 5. c3 a6 6. Ba4 b5 7. Bc2 d5 8. exd5 Qxd5
9. Re1 Bg7 10. d3 O-O 11. Be3 Nf5 12. h3 Bb7 13. Nbd2 Rad8 14. Qe2 Rfe8 15. Ne4 Nxe3
16. Qxe3 Ne7 17. Nfg5 Rf8 18. Bb3 Qc6 19. Qc5 Nd5 20. Qxc6 Bxc6 21. g3 h6 22. Nf3
Kh8 23. Rad1 g5 24. Nc5 Nxc3 25. bxc3 Bxf3 26. Rd2 e4 27. d4 a5 28. Bc2 Rfe8 29.
g4 b4 30. cxb4 axb4 31. Nb3 c5 32. Nxc5 Bxd4 33. Nxe4 Bxe4 34. Rxe4 Rxe4 35. Bxe4
Bb6 36. Rxd8+ Bxd8 37. Bd5 f6 38. f3 Kg7 39. Kf2 Bc7 40. Ke3 Bd6 41. Ke4 Kg6 42.
Be6 Be7 43. Bd7 Kg7 44. Kf5 Kf7 45. Be6+ Kg7 46. Bb3 Bc5 47. Ke6 Be3 48. Kd5 Bd2
49. Kc4 Kf8 50. Kd3 Bc3  1/2-1/2

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.09"]
[Round "6"]
[Board "18"]
[White "Andriska, Matheus Jose Amante"]
[Black "Reimberg, Arthur Bernardo"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "1261"]
[BlackElo "0"]
[PlyCount "70"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. Nc3 d6 6. h3 O-O 7. d3 h6 8. Bd2 a6
9. a4 Be6 10. Bb3 Qd7 11. Ne2 d5 12. exd5 Bxd5 13. Bxd5 Nxd5 14. Ng3 Nf6 15. Re1
Rfe8 16. Bc3 Bd4 17. Bxd4 exd4 18. Rxe8+ Rxe8 19. Qd2 Ne5 20. Nxe5 Rxe5 21. b3 Qc6
22. Rc1 b5 23. a5 Qd6 24. b4 c5 25. bxc5 Rxc5 26. Qb4 Qd5 27. Ne2 Qh5 28. Nxd4 Rg5
29. Kf1 Rxg2 30. Kxg2 Qg5+ 31. Kf3 Qh5+ 32. Ke3 Nd5+ 33. Ke4 Nxb4 34. c4 Qg6+ 35.
Kf3 Qxd3+  0-1

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.10"]
[Round "7.1"]
[White "Diego Saul Rodri Flores Quilla"]
[Black "Lucas Costamilan Tomiello"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2414"]
[BlackElo "2279"]
[Annotator "Stockfish 16"]
[PlyCount "62"]
[EventDate "2023.??.??"]

{[%evp 0,62,37,33,31,26,26,22,82,61,61,-6,20,20,28,44,28,34,38,-27,3,9,19,-3,
15,31,29,-31,28,4,16,-6,2,-34,24,-29,-9,-1,3,10,11,16,15,34,26,19,19,29,28,3,3,
22,17,-2,-9,-7,59,52,261,74,243,97,94,98,98]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4.
e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Be7 8. Qd2 O-O 9. h4 a6 10. h5 b5 11. dxc5
Bxc5 12. h6 g6 13. a3 Qb6 14. Bf2 Bb7 15. Bd3 Rac8 16. O-O Na5 $2 {Mistake. f6
was best.} (16... f6 17. exf6) 17. Ne2 $6 {Inaccuracy. b4 was best.} (17. b4)
17... Nc4 $6 {Inaccuracy. f6 was best.} (17... f6 18. Bxc5 Qxc5+ 19. Kh1 Nc6
20. b4 Qb6 21. Rae1 fxe5 22. fxe5 Ncxe5 23. Nxe5 Nxe5 24. Nf4) 18. Bxc4 Bxf2+
19. Rxf2 bxc4 20. Qd4 Nc5 21. Ng5 Na4 22. Qxb6 Nxb6 23. Nd4 Na4 24. b3 cxb3 25.
cxb3 Nc5 26. Rc2 Nd3 27. Rd2 Nxf4 $6 {Inaccuracy. Rc3 was best.} (27... Rc3 28.
Rf1) 28. Rf1 Nh5 $2 {Mistake. f6 was best.} (28... f6 29. Rxf4) 29. Rd3 $2 {
Mistake. Rdf2 was best.} (29. Rdf2 Bc6 30. Rxf7 Rxf7 31. Rxf7 Be8 32. Ra7 Ng3
33. Ndxe6 Ne4 34. Rg7+ Kh8 35. Rxh7+ Kg8) 29... a5 $6 {Inaccuracy. f6 was best.
} (29... f6 30. Ngxe6) 30. b4 $2 {Mistake. Rdf3 was best.} (30. Rdf3 a4 31. b4
Bc6 32. g4 Bb5 33. Nxb5 Rc4 34. gxh5 Rg4+ 35. Kf2 Rxg5 36. hxg6 Rxe5) 30...
axb4 31. axb4 Rc4 1/2-1/2

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.10"]
[Round "7.2"]
[White "Ivan Excender Soriano Quispe"]
[Black "Juan Martin Ibarra"]
[Result "1/2-1/2"]
[ECO "B50"]
[WhiteElo "2214"]
[BlackElo "2213"]
[Annotator "Stockfish 16"]
[PlyCount "72"]
[EventDate "2023.??.??"]

{[%evp 23,72,0,0,1,4,0,4,6,5,4,7,-14,-15,-15,0,0,0,-2,0,-6,-12,-46,-39,-31,0,0,
0,-1,0,0,0,-3,0,0,0,0,0,0,0,0,0,0,243,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3.
c3 Nf6 4. h3 Nc6 5. Bd3 g6 6. O-O Bg7 7. Bc2 e5 8. d4 cxd4 9. cxd4 exd4 10.
Nxd4 O-O 11. Nxc6 bxc6 12. Nc3 d5 13. Bg5 {[#] aiming for e5. B50: Sicilian: 2.
..d6, Miscellaneous.} h6 14. Bh4 {Black must now prevent e5.} g5 15. Bg3 $1
Nxe4 16. Nxe4 dxe4 17. Qxd8 Rxd8 18. Bxe4 Ba6 19. Rfe1 Bxb2 20. Rab1 Bd4 $146 (
{Predecessor:} 20... Rd2 21. Bxc6 Rc8 22. Bf3 Bd3 23. Rbd1 Rxd1 24. Rxd1 Rc1
25. Rxc1 Bxc1 26. Bb8 a6 {1/2-1/2 (39) Farahat,A (2404)-Paramzina,A (2256)
Sharjah 2021}) 21. Bxc6 Rac8 22. Bb7 Bxb7 23. Rxb7 Rd5 24. Re2 Bb6 25. Kh2 Rf5
26. f3 Rc1 27. Bb8 h5 28. Kg3 Ra5 29. Re8+ Kg7 30. Ree7 Rxa2 {Strongly
threatening ...h4+.} 31. Rxf7+ Kg6 {( -> ...h4+)} 32. Rg7+ (32. Bxa7 h4+ 33.
Kh2 Raa1 34. Rg7+ Kf5 35. Rbf7+ Ke6 36. Re7+ Kd5 37. Rxg5+ Kd6 38. Bb8+ Kxe7
39. Rg7+ Ke6 40. Rg6+ Kf5 41. Rf6+ {[%mdl 64] Decoy} Kxf6 42. Be5+ {[%mdl 64]
Decoy} Kxe5 43. f4+ Kf6 44. g4 Rc2#) 32... Kh6 $2 {[%eval 243,26] [#]} (32...
Kf6 $11 {[%eval 0,49]}) 33. Rh7+ $2 {[%eval 0,48]} ({Inferior is} 33. Bxa7 Rcc2
$11) (33. h4 $1 $18 {[%eval 243,26][%cal Rh4g5]} gxh4+ 34. Kh2) 33... Kg6 $11 {
The position is equal.} 34. Rbg7+ (34. Bxa7 h4+ 35. Kh2 Raa1 $19) 34... Kf6 35.
Rf7+ ({Wrong is} 35. Bxa7 $2 Rg1 $19) 35... Kg6 36. Rhg7+ Kh6 {Accuracy: White
= 87%, Black = 84%.} 1/2-1/2

[Event "U20 Pan-American Chess Championship Open"]
[Site "Sede Social CFCSN - Rua Gen. O"]
[Date "2023.11.10"]
[Round "7.3"]
[White "Oro, Faustino"]
[Black "Schnaider, Ilan"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2377"]
[BlackElo "2333"]
[Annotator "Stockfish 16"]
[PlyCount "90"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

{[%evp 9,90,33,26,28,28,28,29,27,26,25,27,14,20,20,31,19,103,103,93,90,94,40,
46,42,53,22,25,30,34,37,91,31,36,12,14,13,11,7,14,0,0,0,0,0,1,0,0,-7,3,0,0,0,0,
-9,-2,-9,-2,-5,0,0,0,-6,0,-2,0,0,0,-5,0,-8,0,-5,0,-7,-3,-5,-3,-13,0,-2,0,-7,0]
} 1. e4 c5 2. c3 e5 3. Nf3 Nc6 4. Bc4 Nf6 5. Ng5 d5 6. exd5 Nxd5 7. Qh5 {
[%csl Gg5][%cal Rh5f7]} g6 $1 {[%cal Rg6h5]} 8. Qf3 $1 {[%csl Gg5][%cal Rf3f7]
[%mdl 64] [#] Double Attack. White has an edge.} Qxg5 9. Bxd5 Nd8 10. O-O Qe7
11. d4 exd4 12. cxd4 Bg7 {[%eval 103,23]} (12... cxd4 $11 {[%eval 19,28] keeps
the balance.} 13. Nd2 Bg7) 13. dxc5 $16 O-O 14. Nc3 Ne6 15. Bxe6 Bxe6 16. Be3
Rfd8 17. Rfd1 Rxd1+ 18. Rxd1 Bxc3 19. bxc3 Bxa2 20. h3 {[%eval 31,25]} (20. h4
$16 {[%eval 91,20]}) 20... a5 $1 $14 21. Ra1 Bb3 {The position is equal.} 22.
c6 bxc6 23. Qxc6 Qd8 24. Bd4 a4 25. Qb5 Qe8 26. Qb4 Rc8 27. Qb7 Qe6 28. Qf3 Re8
(28... h6 {is more complex.} 29. Qb7 Kh7 30. Qb4 Rd8 31. Qb7 Qd5) 29. Qf4 Qf5
30. Qd2 (30. Qg3 {seems wilder.} Qe6 31. Qf4 Qf5 32. Qg3) 30... f6 31. Be3 Qe6
32. Qd4 Qe5 33. Qd7 Qe7 34. Qc6 Qe6 35. Qf3 Qf5 36. Qc6 Qe6 37. Qb5 Qe5 38. Qd7
Qe6 39. Qd2 Qf5 40. Bd4 Kf7 41. Qh6 Kg8 42. Qd2 Kf7 43. Be3 Kg8 44. Qd6 Qe5 45.
Qd2 Qf5 {Accuracy: White = 82%, Black = 85%.} 1/2-1/2

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.10"]
[Round "7.4"]
[White "Luigy Lira De Siqueira"]
[Black "Yago Labussiere"]
[Result "1/2-1/2"]
[ECO "B03"]
[WhiteElo "2179"]
[BlackElo "2185"]
[Annotator "Stockfish 16"]
[PlyCount "55"]
[EventDate "2023.??.??"]

{[%evp 0,55,37,37,49,69,58,58,54,37,13,32,31,31,45,5,26,13,23,8,53,33,6,6,46,
-6,16,-18,-20,-21,-4,-50,-26,-39,-98,-94,19,26,19,-1,44,37,41,33,20,-7,31,24,
22,29,72,17,15,-37,-34,-54,-21,-201]} 1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5.
exd6 exd6 6. Nc3 Nc6 7. Be3 Be7 8. Bd3 O-O 9. b3 Bg5 10. Nf3 Bxe3 11. fxe3 Re8
12. Qd2 Qe7 13. Nd1 Bg4 14. O-O Nd7 15. Qf2 $6 {Inaccuracy. b4 was best.} (15.
b4 Nf6) 15... Nf6 16. Re1 $2 {Mistake. Qd2 was best.} (16. Qd2 Rad8 17. h3 Bh5
18. Nh4 Bg6 19. Nxg6 hxg6 20. Rf3 d5 21. cxd5 Nb4 22. Bb5 Rf8) 16... Bxf3 17.
gxf3 Nh5 $4 {Blunder. Nxd4 was best.} (17... Nxd4 18. Nc3 Ne6 19. Rad1 c6 20.
Bf5 Rad8 21. Qh4 g6 22. Bxe6 fxe6 23. Ne2 d5 24. Ng3) 18. Nc3 Nb4 19. Bf1 c6
20. a3 Na6 21. Bg2 Nc7 22. Qe2 $6 {Inaccuracy. f4 was best.} (22. f4 f5) 22...
g6 23. Rad1 Qd7 $6 {Inaccuracy. d5 was best.} (23... d5) 24. Qd2 Qf5 25. Rf1 d5
26. c5 $6 {Inaccuracy. e4 was best.} (26. e4 Qf4 27. Ne2 Qxd2 28. Rxd2 Ne6 29.
exd5 cxd5 30. f4 Nc7 31. Nc3 Nf6 32. Rd3 Kg7) 26... Rad8 27. b4 Qg5 28. Kh1 $4
{Blunder. f4 was best.} (28. f4 Qh6 29. Rf3 Ne6 30. Kh1 g5 31. fxg5 Nxg5 32.
Rf5 Kh8 33. Rg1) 1/2-1/2

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.10"]
[Round "7.5"]
[White "Fabian Ricardo Reyes Zavaleta"]
[Black "Matheus Mendes Domingues Ribei"]
[Result "1-0"]
[ECO "B54"]
[WhiteElo "2122"]
[BlackElo "2150"]
[Annotator "Stockfish 16"]
[PlyCount "70"]
[EventDate "2023.??.??"]

{[%evp 0,70,19,38,40,41,66,77,66,31,42,-7,42,20,54,50,50,42,54,37,72,62,67,57,
61,63,101,67,58,47,85,55,55,47,74,78,96,55,47,45,45,41,363,21,22,16,56,46,105,
88,73,61,338,436,454,445,488,618,659,231,260,239,239,239,253,256,295,280,309,
92,114,-29999,-30000]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 a6 6. c4
e6 7. Nc3 Be7 8. Be3 O-O 9. Be2 Qc7 10. O-O Nc6 11. Qd2 Rd8 12. Rac1 Rb8 $2 {
Mistake. Bd7 was best.} (12... Bd7 13. b3) 13. Rfd1 $6 {Inaccuracy. Nd5 was
best.} (13. Nd5 Qd7) 13... Ne5 14. a3 Bf8 15. Bg5 Be7 16. Be3 Bf8 17. b3 b6 18.
Bg5 $6 {Inaccuracy. g4 was best.} (18. g4 h6 19. h4 d5 20. cxd5 Nexg4 21. Bf4
e5 22. Ncb5 Qd7 23. Nc6 exf4 24. Nxb8 Qe8) 18... Be7 19. f4 Ng6 20. f5 exf5 $4
{Blunder. Ne5 was best.} (20... Ne5 21. Qe1 Re8 22. Qg3 Bd7 23. Kh1 Kh8 24. a4
Nc6 25. Nxc6 Bxc6 26. fxe6 fxe6 27. Bxf6) 21. Nxf5 $4 {Blunder. exf5 was best.}
(21. exf5 Nh8 22. Nd5 Nxd5 23. cxd5 Bxg5 24. Qxg5 Qd7 25. Nc6 f6 26. Qf4 Bb7
27. Nxb8 Rxb8) 21... Bxf5 22. exf5 Ne5 $6 {Inaccuracy. Qc5+ was best.} (22...
Qc5+ 23. Be3) 23. Kh1 Neg4 $4 {Blunder. Qd7 was best.} (23... Qd7 24. Qf4 h6
25. Bh4 Nh7 26. Bxe7 Qxe7 27. Nd5 Qg5 28. Qxg5 Nxg5 29. Kg1 Ne4 30. b4) 24.
Bxg4 $4 {Blunder. Nd5 was best.} (24. Nd5 Nxd5 25. cxd5 Bxg5 26. Qxg5 Nf2+ 27.
Kg1 Ne4 28. Qe3 Qe7 29. Bf3 Re8 30. Re1 Qf6) 24... Nxg4 25. Rf1 Nf6 $4 {
Blunder. Bxg5 was best.} (25... Bxg5 26. Qxg5 Nf6 27. Nd5 Nxd5 28. cxd5 h6 29.
Qh4 Qb7 30. f6 Qxd5 31. fxg7 Qg5 32. Qh3) 26. Bxf6 Bxf6 27. Nd5 Qd7 28. Nxf6+
gxf6 29. Rc3 $6 {Inaccuracy. Qh6 was best.} (29. Qh6 d5 30. Rf3 Qd6 31. Rg3+
Qxg3 32. hxg3 d4 33. Qxf6 d3 34. Rd1 Rd7 35. Qg5+ Kh8) 29... Kh8 30. Qh6 Rg8
31. Qxf6+ Rg7 32. Rd3 Qc6 $6 {Inaccuracy. Qd8 was best.} (32... Qd8 33. Rxd6
Qxf6 34. Rxf6 Kg8 35. Rf4 h5 36. Rh6 b5 37. Rxh5 f6 38. h3 bxc4 39. Rxc4) 33.
Rg3 Rbg8 34. Rf4 $4 {Blunder. Re1 was best.} (34. Re1 Qc8) 34... Qe8 35. Rh4 $4
{Checkmate is now unavoidable. Kg1 was best.} (35. Kg1 Qe1+) 35... Qe1# 1-0

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.10"]
[Round "7.6"]
[White "Miguel Angel Montes Orozco"]
[Black "Pranav Sathish"]
[Result "1/2-1/2"]
[ECO "E00"]
[WhiteElo "2097"]
[BlackElo "2412"]
[Annotator "Stockfish 16"]
[PlyCount "102"]
[EventDate "2023.??.??"]

{[%evp 0,102,37,29,30,-20,-17,-24,-24,-24,31,26,17,3,32,24,19,29,24,15,44,21,
48,-189,-174,-179,11,11,11,11,92,52,61,64,64,63,38,65,66,24,40,22,15,-31,-18,
-21,-19,-35,12,0,46,55,75,34,-2,63,0,-34,79,29,79,67,70,94,94,94,96,84,95,34,
66,-6,-12,0,9,-29,102,97,92,57,73,43,57,-1,29,-92,-59,-54,-52,-72,-65,-41,-37,
-54,-32,-84,-111,-61,-113,-199,-140,-197,-209,-312,-293]} 1. d4 Nf6 2. c4 e6 3.
g3 d5 4. Nf3 b6 5. Bg2 Bb7 6. Ne5 Bd6 7. O-O O-O 8. Nc3 Nbd7 9. Bf4 Qe7 10. Qa4
c5 11. dxc5 $4 {Blunder. cxd5 was best.} (11. cxd5 Bxe5 12. dxe5 Nxd5 13. Rad1
Rfd8 14. Bxd5 exd5 15. Nxd5 Bxd5 16. Rxd5 Nf8 17. Rfd1 Rxd5) 11... Bxe5 12. c6
Bxf4 $4 {Blunder. Bxc6 was best.} (12... Bxc6 13. Qxc6 Rac8 14. Qb7 Rc7 15. Qa6
Bxf4 16. gxf4 Rxc4 17. Qxa7 Rxf4 18. e3 Rg4 19. b3) 13. cxb7 Rab8 14. gxf4 Rxb7
15. cxd5 Nc5 16. Qc2 exd5 17. Nxd5 Nxd5 18. Bxd5 Rd7 19. Bf3 Qh4 $6 {
Inaccuracy. Qf6 was best.} (19... Qf6) 20. e3 $6 {Inaccuracy. b4 was best.} (
20. b4 Ne6 21. e3 g5 22. f5 Rc7 23. Qe4 Qxe4 24. Bxe4 Ng7 25. Rac1 Rfc8 26.
Rxc7 Rxc7) 20... Rd6 21. f5 $6 {Inaccuracy. Rfd1 was best.} (21. Rfd1 Rg6+)
21... Rh6 22. Rfd1 Qxh2+ 23. Kf1 Qe5 $6 {Inaccuracy. Rh3 was best.} (23... Rh3
24. Ke2 Rxf3 25. Kxf3 Qh3+ 26. Ke2 Qg4+ 27. Kf1 Ne4 28. Qc7 Qh3+ 29. Ke2 Qxf5
30. Qf4) 24. b4 $6 {Inaccuracy. Rd5 was best.} (24. Rd5 Qf6 25. Rad1 g6 26. Rd6
Ne6 27. R1d5 Rh2 28. Be4 gxf5 29. Rxf5 Qh4 30. Bd5 Qh3+) 24... Na6 $6 {
Inaccuracy. Nd7 was best.} (24... Nd7 25. Qe4) 25. a3 Rf6 $6 {Inaccuracy. Nc7
was best.} (25... Nc7 26. Qe4 Qxe4 27. Bxe4 Ne8 28. Bg2 Rd6 29. a4 g6 30. Rxd6
Nxd6 31. Rd1 Nxf5 32. Rd7) 26. e4 $2 {Mistake. Rac1 was best.} (26. Rac1 Nb8
27. Rd5 Qe7 28. Qc7 Qxc7 29. Rxc7 a6 30. e4 g6 31. Bg4 Rc6 32. Rxc6 Nxc6) 26...
Nc7 27. Rac1 Nb5 28. Qd3 $6 {Inaccuracy. Qc4 was best.} (28. Qc4) 28... Qf4 $2
{Mistake. Rd6 was best.} (28... Rd6 29. Qe3 Nd4 30. Rc4 Rfd8 31. Bg4 h6 32. Kg2
Nc2 33. Qg3 Ne3+ 34. Qxe3 Rxd1 35. Bxd1) 29. Bg2 Nd6 30. Qd5 $2 {Mistake. Qd2
was best.} (30. Qd2 Qh2 31. Rc3 Ne8 32. Rd3 Rh6 33. Rd8 Rh4 34. Qg5 h6 35. Qg3
Qxg3 36. fxg3 Rg4) 30... Rh6 31. Rc6 Ne8 32. Rxh6 Qxh6 33. e5 Qg5 $6 {
Inaccuracy. g6 was best.} (33... g6 34. f6 Nc7 35. Qd7 Ne6 36. Qxa7 Qh5 37. Re1
Qf5 38. Qxb6 Qd3+ 39. Kg1 Qxa3 40. b5) 34. Qe4 g6 35. Bh3 $2 {Mistake. f6 was
best.} (35. f6) 35... Ng7 $6 {Inaccuracy. Qh5 was best.} (35... Qh5 36. Qg4)
36. f6 Nh5 37. Rd4 Qh6 $6 {Inaccuracy. Re8 was best.} (37... Re8 38. Qe3) 38.
Bg4 Qc1+ 39. Kg2 Qg5 40. Kf3 $6 {Inaccuracy. Qe3 was best.} (40. Qe3 h6 41.
Qxg5 hxg5 42. Bd7 Rb8 43. Kf3 Kh7 44. Ke4 Nf4 45. Bg4 Kg8 46. Rd6 a6) 40... Qh4
41. Ke2 $2 {Mistake. Kg2 was best.} (41. Kg2 Nxf6 42. exf6 Qxf6 43. Bf3 Rd8 44.
Rc4 Qg5+ 45. Kf1 h5 46. Rc7 h4 47. Be2 Qf6) 41... Qh2 42. Ke3 $2 {Mistake. Kf1
was best.} (42. Kf1) 42... Re8 43. Bxh5 Qxh5 44. f4 Qh3+ 45. Qf3 Qh2 46. Rd2
Qg1+ 47. Qf2 Qc1 48. Kf3 Qxa3+ 49. Kg4 $2 {Mistake. Qe3 was best.} (49. Qe3 Qc1
50. Kg3 Qc8 51. Rd5 h5 52. f5 Qxf5 53. Qh6 Qg4+ 54. Kf2 Qh4+ 55. Kg2 Qe4+)
49... Qb3 $6 {Inaccuracy. Qxb4 was best.} (49... Qxb4 50. Qd4) 50. Qh4 $4 {
Blunder. f5 was best.} (50. f5 Kh8) 50... h5+ 51. Kg5 Kh7 1/2-1/2

[Event "U20 Pan-American Chess Championship Open"]
[Site "Sede Social CFCSN - Rua Gen. O"]
[Date "2023.11.10"]
[Round "7.7"]
[White "Silva, Kaua Marques"]
[Black "Piccoli, Lucas Fonseca"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2235"]
[BlackElo "2225"]
[PlyCount "55"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

{[%evp 0,55,26,22,71,63,70,40,43,39,28,28,51,43,206,71,71,-63,58,23,43,24,77,
45,80,41,43,43,50,37,37,-17,10,47,30,41,87,86,98,82,90,95,125,72,109,74,69,67,
32,30,75,-21,-101,-128,92,102,143,-291]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4
Nf6 5. Nc3 e5 6. Ndb5 d5 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nxd5 Bg7 11. c3
f5 12. Bd3 Ne7 13. Nxe7 Qxe7 14. exf5 e4 15. Be2 O-O 16. Nc2 Bxf5 17. O-O Bg6
18. a4 bxa4 19. Rxa4 a5 20. Bc4 Rab8 21. Ra2 Kh8 22. Re1 Be5 23. Ne3 f5 24. Nd5
Qg5 25. f4 exf3 26. Qxf3 Qh4 27. Rxe5 Qxc4 28. Qe3 0-1

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.10"]
[Round "7"]
[Board "8"]
[White "Filgueiras, Nathan Felipe"]
[Black "Tomiello, Mateus Costamilan"]
[Result "1-0"]
[ECO "B10"]
[WhiteElo "2323"]
[BlackElo "2145"]
[PlyCount "139"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 c6 2. c4 d5 3. exd5 cxd5 4. cxd5 Nf6 5. Qa4+ Nbd7 6. Nc3 g6 7. g3 Bg7 8. Bg2
O-O 9. Nge2 a6 10. d4 b5 11. Qb3 Bb7 12. O-O Nb6 13. Nf4 Rb8 14. a3 Qd6 15. Re1 Rfd8
16. Re5 Ng4 17. Rg5 Nf6 18. Re5 Nc4 19. Nd3 Qb6 20. Be3 Re8 21. h3 Rbd8 22. Re1 Qc7
23. Bf4 Nxe5 24. Nxe5 Nh5 25. Bg5 Bf6 26. Bh6 Bg7 27. Bg5 Nf6 28. Bf4 Qb6 29. Nc6
Bxc6 30. dxc6 e6 31. c7 Rc8 32. d5 Nh5 33. dxe6 fxe6 34. Bg5 Qxc7 35. Rxe6 Kh8 36.
Qd5 Rf8 37. Qe4 Nf6 38. Qe2 Qc5 39. Bf4 Rce8 40. Rxe8 Rxe8 41. Qd2 a5 42. Be3 Qe5
43. a4 b4 44. Nb5 Ne4 45. Qd7 Nxg3 46. Nd6 Rf8 47. Nf7+ Rxf7 48. Qxf7 Nf5 49. Bd5
Qb8 50. Bf4 Qd8 51. b3 h5 52. Qb7 Ne7 53. Qa8 Qxa8 54. Bxa8 Bd4 55. Bc7 Kg7 56. Bxa5
Bc5 57. Bc7 Kf6 58. Kg2 Ke6 59. Be4 g5 60. a5 Kd7 61. Bb6 Bxb6 62. axb6 Nc6 63. b7
Nb8 64. Kg3 Ke6 65. Bf3 h4+ 66. Kg4 Kf6 67. Be2 Nc6 68. Bb5 Nb8 69. f4 gxf4 70. Kxf4
 1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.10"]
[Round "7"]
[Board "9"]
[White "Castro Salgado, Pablo"]
[Black "Vazquez, Facundo"]
[Result "1/2-1/2"]
[ECO "E12"]
[WhiteElo "2150"]
[BlackElo "2407"]
[PlyCount "89"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. e3 Be7 8. Bb5+ c6
9. Bd3 O-O 10. Qc2 h6 11. O-O Nxc3 12. bxc3 c5 13. Qe2 Qc8 14. e4 Ba6 15. Rd1 Rd8
16. Ne5 Bd6 17. Bf4 c4 18. Bc2 Nd7 19. Ng6 Nf8 20. Bxd6 Nxg6 21. Bg3 Bb7 22. h4 Qc6
23. Qg4 Qe8 24. Re1 f6 25. Rad1 Qf7 26. f4 Ne7 27. Qe2 Rac8 28. Bf2 Kf8 29. h5 Kg8
30. Bh4 Re8 31. Ba4 Bc6 32. Bc2 b5 33. Qf2 Qxh5 34. Rd2 Qf7 35. Re3 Ng6 36. Bd1 Nxh4
37. Qxh4 Qb7 38. Bc2 e5 39. Rg3 Kh8 40. d5 Qb6+ 41. Kh2 Bd7 42. Rf3 Rf8 43. Rdf2
Qd6 44. Rf1 Kg8 45. Qh5  1/2-1/2

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.10"]
[Round "7"]
[Board "10"]
[White "Vasquez Vargas, Henry Richard"]
[Black "Reyes Zavaleta, Cristhian Yamil"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "2216"]
[BlackElo "1804"]
[PlyCount "143"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 d5 2. Nc3 Nf6 3. Bf4 c6 4. e3 Bg4 5. f3 Bh5 6. g4 Bg6 7. h4 h6 8. Bd3 Bxd3
9. Qxd3 e6 10. Nge2 Bd6 11. O-O-O Na6 12. e4 Bxf4+ 13. Nxf4 dxe4 14. fxe4 Qc7 15.
e5 O-O-O 16. Qf3 Nd7 17. Ne4 Kb8 18. Kb1 Nb6 19. Nd6 Nc8 20. Nxc8 Kxc8 21. Rhe1 g6
22. c4 Rhe8 23. c5 Rd7 24. h5 g5 25. Ne2 Qa5 26. a3 Red8 27. Rc1 Nc7 28. Red1 Nd5
29. Ng3 Nf4 30. Ne4 Kb8 31. Nd6 Rf8 32. Qe4 Qa4 33. Qh7 Ne2 34. Qxh6 Rfd8 35. Qxg5
Nc3+ 36. Rxc3 Qxd1+ 37. Ka2 Qxd4 38. h6 Qd5+ 39. Ka1 a5 40. Rc1 Qd3 41. Qf6 Ka7 42.
Rh1 Qd5 43. Rc1 Qd3 44. g5 Rb8 45. Qg7 Rdd8 46. h7 Rh8 47. Rh1 Qf3 48. Qh6 b6 49.
Qh3 Qxh3 50. Rxh3 Rbf8 51. Kb1 bxc5 52. Kc2 Kb6 53. Kc3 c4 54. Kxc4 c5 55. b3 Kc6
56. Rh4 a4 57. b4 cxb4 58. axb4 a3 59. b5+ Kb6 60. Kb3 Kc5 61. Kxa3 Kd5 62. Kb4 Kxe5
63. Kc5 Rc8+ 64. Nxc8 Rxc8+ 65. Kb4 Rh8 66. b6 Kd6 67. b7 Kc6 68. Kc4 Kxb7 69. Kd4
Kc7 70. Ke5 Kd7 71. Kf6 e5 72. Kg7  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.10"]
[Round "7"]
[Board "11"]
[White "Cahuapaza Tarapaca, Leonardo"]
[Black "Seccafim, Caic Dos Santos"]
[Result "0-1"]
[ECO "A35"]
[WhiteElo "1818"]
[BlackElo "2062"]
[PlyCount "92"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 c5 2. e3 Nf6 3. Nf3 g6 4. c4 Bg7 5. Nc3 O-O 6. Be2 cxd4 7. Nxd4 Nc6 8. O-O
d6 9. b3 d5 10. Bb2 Nxd4 11. exd4 dxc4 12. bxc4 Bf5 13. Qb3 Ne4 14. Rfd1 Nxc3 15.
Bxc3 Qc7 16. Rac1 Rac8 17. Bb4 Rfd8 18. d5 b6 19. g4 Qe5 20. Re1 Bd7 21. Qf3 Qf6
22. Qe3 e6 23. Bf3 Qb2 24. Bc3 Bxc3 25. Rxc3 exd5 26. Rec1 dxc4 27. Qe7 Be6 28. R3c2
Qb5 29. Qf6 Qc5 30. a4 Qd4 31. Qg5 Rc5 32. Qh4 a6 33. Re1 Kg7 34. Re3 Qf6 35. Qg3
b5 36. Rce2 b4 37. h4 h6 38. Re5 Rxe5 39. Rxe5 Rd3 40. Re3 Rxe3 41. fxe3 g5 42. hxg5
hxg5 43. Be4 c3 44. Qd6 b3 45. Qxa6 c2 46. Qc6 Qa1+  0-1

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.10"]
[Round "7"]
[Board "12"]
[White "Munoz Ramos, Christopher"]
[Black "Casalaspro, Mathias Andre"]
[Result "1/2-1/2"]
[ECO "E99"]
[WhiteElo "2038"]
[BlackElo "2060"]
[PlyCount "97"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. e4 d6 5. Nc3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7
9. Ne1 Nd7 10. Be3 f5 11. f3 f4 12. Bf2 g5 13. b4 Nf6 14. Rc1 Ng6 15. c5 Rf7 16.
a4 h5 17. a5 g4 18. cxd6 g3 19. hxg3 fxg3 20. Bxg3 cxd6 21. Nd3 h4 22. Bh2 Nh5 23.
f4 Ng3 24. Bh5 Nxf1 25. Bxg6 Rf6 26. f5 Nxh2 27. Kxh2 Bd7 28. Qh5 Be8 29. Bxe8 Qxe8
30. Qxe8+ Rxe8 31. Nb5 a6 32. Na3 Bh6 33. Rc3 Rf7 34. Nf2 Bd2 35. Rb3 Rg7 36. Nc4
Be1 37. Nd3 Bg3+ 38. Kh3 Rd8 39. Ne3 Rc7 40. Ng4 Kf7 41. b5 Rdc8 42. bxa6 bxa6 43.
Rb6 Rc3 44. Rxd6 Rxd3 45. Rd7+ Kf8 46. Nf6 Bf2+ 47. Kh2 Bg3+ 48. Kh3 Bf2+ 49. Kh2
 1/2-1/2

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.10"]
[Round "7"]
[Board "13"]
[White "Varillas Jimenez, Ivan"]
[Black "Nascimento, Nicolas Daniel Trindade"]
[Result "1/2-1/2"]
[ECO "A14"]
[WhiteElo "1985"]
[BlackElo "1797"]
[PlyCount "52"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. c4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. b3 O-O 7. Bb2 d5 8. cxd5 Bxd5
9. Nc3 Bb7 10. d4 Nbd7 11. Qc2 c5 12. e4 Rc8 13. Rfe1 cxd4 14. Nxd4 Qc7 15. Rac1
Qb8 16. Kh1 Qa8 17. f3 Rfd8 18. Rcd1 Ne5 19. Nde2 Ba6 20. Nc1 Bb7 21. Nd3 Nxd3 22.
Rxd3 Rxd3 23. Qxd3 Rd8 24. Qe2 Qc8 25. Rd1 Rxd1+ 26. Qxd1 Qc5  1/2-1/2

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.10"]
[Round "7"]
[Board "14"]
[White "Nascimento, Kaio Vinicius Da Trindade"]
[Black "Lima, Carlos Eduardo I De Araujo"]
[Result "0-1"]
[ECO "D13"]
[WhiteElo "1310"]
[BlackElo "1857"]
[PlyCount "77"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 c6 2. c4 d5 3. cxd5 cxd5 4. Nc3 Nf6 5. Nf3 e6 6. Bf4 Be7 7. e3 O-O 8. Bd3 a6
9. O-O Nc6 10. h3 Bd6 11. Ne5 Bxe5 12. dxe5 Nd7 13. Qg4 g6 14. Qg3 Qc7 15. e4 d4
16. Ne2 Re8 17. a3 b5 18. Rac1 Qb6 19. Rfd1 Bb7 20. Bb1 Rad8 21. Bg5 Rc8 22. Bf6
Nxf6 23. exf6 e5 24. Qg5 Na5 25. Ng3 h6 26. Qh4 Kh7 27. f4 Rxc1 28. Rxc1 d3+ 29.
Kh2 d2 30. Rd1 Qf2 31. f5 Nc4 32. Qg4 Ne3 33. fxg6+ Kh8 34. Qf3 Qxf3 35. gxf3 Nxd1
36. g7+ Kg8 37. Nf1 Rd8 38. f4 Nxb2 39. Nxd2  0-1

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.10"]
[Round "7"]
[Board "15"]
[White "Reimberg, Arthur Bernardo"]
[Black "Nascimento, Luiz Eduardo Da Trindade"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "0"]
[BlackElo "1877"]
[PlyCount "64"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. c3 O-O 6. O-O Bb6 7. Nbd2 d6 8. h3 h6
9. Bb3 Qe7 10. Re1 Be6 11. Bc2 Rad8 12. Nf1 d5 13. Qe2 d4 14. Bd2 Rfe8 15. Ng3 Qd6
16. Nh4 Ne7 17. Qf3 c5 18. cxd4 cxd4 19. Bxh6 Ng6 20. Nxg6 fxg6 21. Bg5 Rf8 22. Qe2
Ba5 23. Bd2 Bb6 24. a3 Qd7 25. Bb4 Rf7 26. Rac1 Rc8 27. Bb1 Bc7 28. Qd1 a5 29. Bd2
Rcf8 30. Rf1 Kh8 31. b4 a4 32. Bc2 b5  1/2-1/2

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.10"]
[Round "7"]
[Board "16"]
[White "Errazola, Mauricio"]
[Black "Reyes Zavaleta, Sergio Gabriel"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1725"]
[BlackElo "1287"]
[PlyCount "84"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 d5 2. Bf4 Nf6 3. Nc3 c5 4. e3 e6 5. Nb5 Na6 6. Nf3 Bd7 7. c3 Be7 8. Ne5 O-O
9. g4 Bxb5 10. Bxb5 cxd4 11. exd4 Nc7 12. Bd3 Ne4 13. Qe2 f6 14. Nf3 Bd6 15. Bxd6
Nxd6 16. O-O-O Re8 17. Qc2 h6 18. Rde1 Rc8 19. h4 Ncb5 20. g5 Qa5 21. Kb1 Rxc3 22.
bxc3 Na3+ 23. Kb2 Nxc2 24. Kxc2 Qxa2+ 25. Kd1 Ne4 26. Bxe4 dxe4 27. Nd2 Qa1+ 28.
Kc2 Qa2+ 29. Kd1 hxg5 30. hxg5 f5 31. Rh3 Kf7 32. Ke2 e5 33. Rb1 b6 34. Rb5 Qa6 35.
c4 exd4 36. Rxf5+ Kg6 37. Rb5 Qa1 38. Rd5 d3+ 39. Ke3 Qe1+ 40. Kd4 Qxd2 41. Rd6+
Kf7 42. g6+ Ke7  0-1

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.10"]
[Round "7"]
[Board "17"]
[White "De Mattos, Pedro Benedito Flores"]
[Black "Da Fonseca Pinto, Joao Gabriel Alves"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "0"]
[BlackElo "1762"]
[PlyCount "92"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O a6 7. a4 O-O 8. h3 h6 9.
Be3 Ba7 10. Nbd2 Be6 11. Re1 Ne7 12. Qc2 Ng6 13. d4 Nh5 14. Bf1 Nhf4 15. Kh2 Qc8
16. dxe5 dxe5 17. Nxe5 Nxg2 18. Bxg2 Nxe5 19. Bxa7 Rxa7 20. f4 Nc4 21. Nxc4 Bxc4
22. b3 Be6 23. f5 Bd7 24. Qf2 c5 25. Re3 f6 26. Rd3 b6 27. c4 Bc6 28. Rad1 Re7 29.
Qh4 Rfe8 30. Re1 Qb7 31. Rde3 a5 32. Qh5 Qc7+ 33. Kg1 Rd8 34. Rd1 Red7 35. Rxd7 Qxd7
36. Qe2 Qd4 37. Kh2 Qe5+ 38. Kg1 Qa1+ 39. Kh2 Qb1 40. Bf3 Rd4 41. e5 Bxf3 42. Qxf3
fxe5 43. Rxe5 Rd2+ 44. Re2 Rxe2+ 45. Qxe2 Qxf5 46. Qe8+ Kh7  0-1

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.10"]
[Round "8.1"]
[White "Fabian Ricardo Reyes Zavaleta"]
[Black "Diego Saul Rodri Flores Quill"]
[Result "0-1"]
[ECO "A62"]
[WhiteElo "2122"]
[BlackElo "2414"]
[Annotator "Stockfish 16"]
[PlyCount "78"]
[EventDate "2023.??.??"]

{[%evp 0,78,19,26,29,-16,-20,-23,1,3,33,32,22,24,59,40,40,33,31,28,28,7,17,-9,
42,49,70,61,55,39,36,22,24,41,16,37,37,24,35,20,26,-18,10,5,42,39,39,79,90,101,
129,133,128,133,133,133,199,191,124,102,102,41,136,80,80,11,-39,-71,-199,-147,
-254,-236,-238,-248,-259,-279,-269,-341,-348,-346,-159]} 1. d4 Nf6 2. c4 e6 3.
g3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O Re8 10. Bf4
Na6 11. Re1 Bg4 12. h3 Bxf3 13. Bxf3 Nd7 14. Rc1 Ne5 15. Bg2 Nc7 16. Ne4 h6 $6
{Inaccuracy. a5 was best.} (16... a5) 17. g4 Rb8 18. e3 $6 {Inaccuracy. b3 was
best.} (18. b3 f5) 18... b5 19. b3 b4 20. Bh2 Nb5 21. Rf1 Qb6 $6 {Inaccuracy.
Nc3 was best.} (21... Nc3) 22. f4 Nd7 23. f5 Nc3 24. Rxc3 bxc3 25. Nxd6 Qa6 26.
fxg6 fxg6 27. Nxe8 Rxe8 28. d6 Rxe3 29. Qd5+ Kh7 30. Be4 Nf8 $4 {Blunder. Nf6
was best.} (30... Nf6 31. Rxf6 Rxe4 32. Qxe4 Bxf6 33. d7 c2 34. Qxc2 Bd4+ 35.
Kg2 Qc6+ 36. Kg3 Qxd7 37. Qe4) 31. Be5 $4 {Blunder. Bf4 was best.} (31. Bf4
Rxe4 32. Qxe4 Nd7 33. Rf2 Qb5 34. Re2 a5 35. Qc4 Qxc4 36. bxc4 g5 37. Bc1 Be5)
31... c2 32. Rc1 $6 {Inaccuracy. Qf7 was best.} (32. Qf7 Qxf1+) 32... Qe2 33.
Rxc2 $4 {Blunder. Bxg7 was best.} (33. Bxg7 Rg3+ 34. Bg2 Rxg2+ 35. Qxg2 Qe3+
36. Kh2 Qf4+ 37. Qg3 Qd2+ 38. Qg2 Qxc1 39. Be5 Nd7) 33... Qe1+ 34. Kg2 Rxe4 35.
Bxg7 Ne6 36. Be5 Rxe5 37. Qb7+ Ng7 38. d7 Qd1 39. Rf2 Qd5+ $6 {Inaccuracy. Re7
was best.} (39... Re7 40. Qc6 Rxd7 41. Qxc5 Qe1 42. Qf8 Rd3 43. Qf4 Qe7 44. Rf3
Qb7 45. Kg3 Rd7 46. Qe3) 0-1

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.10"]
[Round "8.2"]
[White "Juan Martin Ibarra"]
[Black "Lucas Costamilan Tomiello"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2213"]
[BlackElo "2279"]
[Annotator "Stockfish 16"]
[PlyCount "112"]
[EventDate "2023.??.??"]

{[%evp 0,112,26,40,59,51,45,28,7,19,51,30,43,43,43,8,8,3,-7,-22,-20,3,2,2,4,4,
-4,12,18,15,0,-30,17,-32,10,5,5,-28,-28,-107,-84,-95,-59,-73,-69,-71,-71,-53,
-53,-39,-33,-46,-40,-32,0,0,0,0,0,0,-43,-69,-99,-139,-139,-139,-133,-125,-152,
-156,-161,-159,-159,-170,-170,-205,-224,-234,-277,-283,-320,-320,-346,-364,
-389,-410,-427,-427,-431,-435,-326,-433,-346,-346,-354,-354,-372,-321,-403,
-972,-457,-830,-961,-1026,-1080,-1934,-2187,-1934,-29974,-29975,-29976,-29997,
-29998,-29999,-30000]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6.
Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nab1 Be7 10. Bxf6 Bxf6 11. a4 b4 12. Nd5 O-O 13.
Bc4 a5 14. O-O Bg5 15. c3 Be6 16. Qd3 bxc3 17. Nbxc3 Rb8 18. Bb5 $6 {
Inaccuracy. Nb5 was best.} (18. Nb5 Rb7 19. Rfd1 Bg4 20. Re1 Be6 21. h3 Rd7 22.
Qc3 h5 23. Rad1 h4 24. Qd3 Ne7) 18... Nd4 19. Rfd1 $6 {Inaccuracy. Rad1 was
best.} (19. Rad1 Qc8 20. f4 Nxb5 21. fxg5 Qc5+ 22. Rf2 Nxc3 23. Ne7+ Kh8 24.
Qxc3 Rb4 25. Qxc5 dxc5) 19... f5 20. f3 fxe4 21. fxe4 Qc8 22. Rf1 Qc5 23. Kh1
Nb3 24. Rad1 Rxf1+ 25. Rxf1 Nd2 26. Rd1 Rf8 27. h4 $6 {Inaccuracy. h3 was best.
} (27. h3) 27... Qf2 28. hxg5 Qh4+ 29. Kg1 Qf2+ 30. Kh1 Nf3 31. Qxf3 $4 {
Blunder. gxf3 was best.} (31. gxf3) 31... Rxf3 32. gxf3 Qxf3+ 33. Kg1 Qg3+ $6 {
Inaccuracy. Bh3 was best.} (33... Bh3 34. Bf1 Qg3+ 35. Kh1 Bg4 36. Rd3 Bf3+ 37.
Rxf3 Qxf3+ 38. Kg1 Qg3+ 39. Bg2 Qxg5 40. Nd1) 34. Kf1 Bh3+ 35. Ke2 Bg4+ 36. Kd2
Bxd1 37. Kxd1 Qxg5 38. b4 axb4 39. Nxb4 h5 40. a5 h4 41. Bd7 h3 42. Bxh3 Qh5+
43. Kc2 Qxh3 44. a6 Qg2+ 45. Kb3 Qf2 46. Nb5 Qe3+ 47. Ka4 Qxe4 48. Ka5 g5 49.
Kb6 $4 {Blunder. Nc3 was best.} (49. Nc3 Qe3) 49... Qe3+ $2 {Mistake. Qxb4 was
best.} (49... Qxb4 50. a7 Qc5+ 51. Ka6 Qc6+ 52. Ka5 g4 53. Nxd6 g3 54. Nf5 Qb7
55. Nxg3 Qxa7+ 56. Kb5) 50. Kb7 $6 {Inaccuracy. Ka5 was best.} (50. Ka5 Qf3)
50... Qc5 51. a7 Qxb5+ 52. Ka8 $6 {Checkmate is now unavoidable. Kc8 was best.}
(52. Kc8 Qc5+ 53. Kd8 Qxa7 54. Nd3 Qa8+ 55. Kd7 Qd5 56. Nc1 Qc5 57. Ne2 Qb5+
58. Kxd6 Qxe2) 52... g4 53. Nc2 Qc6+ 54. Kb8 Qb6+ 55. Ka8 Qc7 56. Ne3 Qc8# 0-1

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.10"]
[Round "8.3"]
[White "Ivan Excender Soriano Quispe"]
[Black "Luigy Lira De Siqueira"]
[Result "1/2-1/2"]
[ECO "D36"]
[WhiteElo "2214"]
[BlackElo "2179"]
[Annotator "Stockfish 16"]
[PlyCount "95"]
[EventDate "2023.??.??"]

{[%evp 27,95,0,8,-14,16,-4,15,13,13,4,11,12,15,0,0,0,2,-7,9,0,0,0,0,0,0,-39,-6,
-7,-4,-3,-3,-3,-3,-4,-5,-5,-8,-17,0,-9,0,0,0,0,-4,-4,-5,-2,-2,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5
Be7 6. e3 c6 7. Qc2 Nbd7 8. Bd3 O-O 9. Nf3 h6 10. Bh4 Re8 11. O-O Ne4 12. Bxe7
Qxe7 13. Bxe4 dxe4 14. Nd2 Nf6 15. Nc4 {D36: Queen's Gambit Declined: Exchange
Variation: Main line (5 Bg5 c6 6 Qc2).} b6 {[#]} 16. Rac1 $146 ({Predecessor:} 
16. Rfd1 Bb7 17. a4 Rac8 18. a5 Ba6 19. Ne5 b5 20. Qb3 Qe6 21. Qxe6 Rxe6 22. b4
Re7 {1-0 (46) Martic,Z (2359)-Savic,M (2288) Croatia 2009}) 16... Ba6 17. Qa4
Bb7 18. Qb3 Rac8 19. Rfd1 Red8 20. Qa3 Qxa3 21. Nxa3 Ba6 22. f3 Re8 {
Threatening ...exf3.} 23. fxe4 Nxe4 24. Nxe4 Rxe4 25. Kf2 Re6 26. Nc2 c5 27.
dxc5 {The position is equal.} Rxc5 {[#] And now ...Rf6+ would win.} 28. Nd4 {
Threatens to win with Rxc5.} Rf6+ 29. Nf3 Ra5 30. a3 Bb7 31. Rd8+ Kh7 32. Rc4
g5 33. Rd7 Bd5 34. Rd4 Be6 35. R7d6 $1 Rc5 36. Kg3 Kg7 37. h3 Rc2 38. Rd2 Rxd2
39. Rxd2 $11 {[%mdl 4096] Endgame KRB-KRN} Bf5 40. Rd5 Be4 41. Rd4 Bxf3 42.
gxf3 {KR-KR} Rc6 43. h4 Rc2 44. hxg5 hxg5 45. Rb4 f5 46. f4 Kg6 47. fxg5 Kxg5
48. Rb5 {Accuracy: White = 87%, Black = 84%.} 1/2-1/2

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.10"]
[Round "8.4"]
[White "Lucas Fonseca Piccoli"]
[Black "Faustino Oro"]
[Result "0-1"]
[ECO "A28"]
[WhiteElo "2225"]
[BlackElo "2377"]
[Annotator "Stockfish 16"]
[PlyCount "234"]
[EventDate "2023.??.??"]

{[%evp 0,234,29,-16,-23,-29,-18,-19,-11,-30,-3,-5,-2,-4,0,0,0,-26,-7,-2,21,9,
33,28,47,23,20,7,0,8,8,-12,8,-15,13,-23,8,0,8,-17,-34,-19,-12,-24,0,-4,-4,-27,
-24,-18,-14,-11,0,-9,24,18,25,-14,24,22,64,46,64,47,58,-41,-56,-113,-74,-81,
-76,-98,-71,-68,-63,-86,-83,-79,-55,-79,-64,-81,-49,-65,-31,-59,-54,-65,-44,
-27,-9,-61,-63,-98,-82,-98,-98,-98,-98,-98,-72,-98,-98,-98,-98,-98,-77,-101,
-98,-129,-154,-152,-148,-152,-162,-260,-254,-278,-96,-111,-106,-124,-137,-119,
-126,-126,-136,-136,-136,-136,-183,-226,-133,-271,-243,-225,-248,-240,-294,
-289,-289,-328,-328,-351,-366,-514,-335,-374,-374,-369,-324,-324,-417,-417,
-253,-273,-273,-273,-223,-278,-204,-176,-173,-173,-149,-207,-206,-217,-217,
-217,-173,-217,-217,-217,-196,-217,-196,-196,-196,-217,-196,-217,-217,-267,
-217,-283,-196,-261,-263,-308,-308,-321,-343,-381,-349,-374,-387,-318,-392,
-403,-470,-874,-874,-874,-1002,-1027,-1041,-1059,-1197,-29991,-1201,-29995,
-1330,-1384,-1342,-1423,-1466,-1434,-1652,-1810,-1359,-1781,-1412,-1650,-1989,
-2466,-2452,-29989,-29986,-29987,-1480,-29985,-29986,-29991,-29992,-29993,
-29994]} 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 Bb4 5. d3 O-O 6. a3 Bxc3+ 7. bxc3
d6 8. g3 Ne7 9. Bg2 Ng6 10. O-O c6 11. Re1 Re8 12. Bb2 Be6 13. Qc2 h6 14. h3
Qc7 15. Rac1 Rad8 16. Kh2 Nd7 17. Re3 $6 {Inaccuracy. a4 was best.} (17. a4)
17... Re7 $6 {Inaccuracy. a6 was best.} (17... a6 18. a4 Ra8 19. Ree1 b5 20.
cxb5 axb5 21. Ra1 Reb8 22. axb5 cxb5 23. Qd2 Nc5 24. Rxa8) 18. Rce1 Rde8 19. h4
$6 {Inaccuracy. a4 was best.} (19. a4 Rd8) 19... Nf6 20. Kg1 Qd7 21. a4 Qc8 22.
Ba3 Qd7 23. R3e2 c5 $6 {Inaccuracy. Rd8 was best.} (23... Rd8 24. Nh2) 24. Nd2
Bh3 25. f3 Bxg2 26. Rxg2 Nh7 27. Nf1 f5 28. Qd1 $2 {Mistake. exf5 was best.} (
28. exf5 Qxf5) 28... Nf6 $6 {Inaccuracy. f4 was best.} (28... f4) 29. Ne3 $6 {
Inaccuracy. h5 was best.} (29. h5 Nf8) 29... f4 30. Nf5 fxg3 31. Rxg3 Kh7 32.
Bc1 $2 {Mistake. Nxe7 was best.} (32. Nxe7 Qxe7) 32... Rf7 33. Kh2 Ne7 $6 {
Inaccuracy. Nh5 was best.} (33... Nh5) 34. Nxe7 Qxe7 35. Bg5 Qe6 36. Bxf6 Qxf6
37. Kh3 $6 {Inaccuracy. h5 was best.} (37. h5 Qh4+ 38. Kg2 Ref8 39. Rg1 Kh8 40.
Rh1 Qd8 41. Rhh3 Rf4 42. Rg6 R8f7 43. Kf2 Qd7) 37... Qe6+ 38. Kg2 Rf4 39. Rh1
h5 40. Rg5 Qh6 $6 {Inaccuracy. g6 was best.} (40... g6) 41. Qe1 $6 {Inaccuracy.
Rh3 was best.} (41. Rh3 g6 42. d4 Qf8 43. dxe5 dxe5 44. Qd7+ Rf7 45. Qd5 b6 46.
Rxe5 Rd8 47. Qe6 Rd2+) 41... Ref8 $6 {Inaccuracy. g6 was best.} (41... g6 42.
Qg3 Ref8 43. Rf1 Qg7 44. Kf2 Qf7 45. Ke3 b6 46. Qh3 a6 47. Qg3 Rf6 48. Qg2) 42.
Rh3 R8f7 43. Qg3 $6 {Inaccuracy. d4 was best.} (43. d4 exd4 44. cxd4 cxd4 45.
Qd2 Qf6 46. Rxh5+ Kg8 47. Qd3 Rg4+ 48. Rg3 Rxg3+ 49. Kxg3 Qf4+) 43... R4f6 44.
Qe1 Rf4 $6 {Inaccuracy. g6 was best.} (44... g6) 45. Qg3 $2 {Mistake. d4 was
best.} (45. d4 exd4 46. cxd4 cxd4 47. Qd2 Qf6 48. Rxh5+ Kg8 49. Qd3 Rg4+ 50.
Rg3 Rxg3+ 51. Kxg3 Qf4+) 45... g6 46. Qe1 Qf8 47. Qe2 Qe7 48. Qe1 Qd7 49. Qd1
R7f6 $6 {Inaccuracy. Qe6 was best.} (49... Qe6 50. Rhg3) 50. Rgg3 $6 {
Inaccuracy. d4 was best.} (50. d4 Qe7 51. a5 Qc7 52. Qd2 Re6 53. Rh1 Qf7 54.
Rh3 Qg7 55. Rh1 Ref6 56. dxe5 dxe5) 50... Qe7 51. Qe1 Re6 52. Rg5 Ref6 53. Rgg3
Qd8 54. Qb1 $2 {Mistake. Qd2 was best.} (54. Qd2 Qe8 55. Qc2 b6 56. Rg5 Qf7 57.
Qe2 Qe7 58. Qc2 Qe8 59. Qd1 Qd7 60. Qc2 Kh6) 54... Rf7 55. Qh1 Qb6 56. Qc1 Qb3
57. Rg5 Qa2+ 58. Kg1 Rxf3 $6 {Inaccuracy. Qe2 was best.} (58... Qe2 59. Qf1
Qe3+ 60. Kg2 Rxh4 61. Rf5 Rf4 62. Rxf7+ Rxf7 63. Qd1 b6 64. Rh1 Rf6 65. Rh3)
59. Rxf3 Rxf3 60. Rg2 Qxa4 61. Rxg6 Rf4 62. Rg5 Qe8 63. Qd1 Kh6 $6 {Inaccuracy.
Rxh4 was best.} (63... Rxh4 64. d4) 64. Qd2 Qf7 65. Kg2 a5 66. Kh3 $2 {Mistake.
Rf5 was best.} (66. Rf5) 66... Kh7 67. Qe2 Qe6+ 68. Kg3 Rg4+ 69. Kf2 Qf6+ 70.
Ke1 Rxg5 71. hxg5 Qxg5 72. Qf3 Kg7 73. Qh3 Qg1+ 74. Kd2 Qg4 75. Qh1 h4 76. Qb1
Qd7 $6 {Inaccuracy. Qg2+ was best.} (76... Qg2+) 77. Qg1+ Kh6 78. Qf2 Qe7 79.
Kc2 Kg7 $6 {Inaccuracy. Qg5 was best.} (79... Qg5 80. Kb3 h3 81. Ka4 Qf4 82.
Qe1 h2 83. Kxa5 Kh5 84. Qh1 Kh4 85. Kb6 Qg3 86. Kxb7) 80. Qf5 b6 $2 {Mistake.
Kh6 was best.} (80... Kh6 81. d4) 81. Kb3 Qf6 $6 {Inaccuracy. Kh6 was best.} (
81... Kh6 82. Qg4 Qg5 83. Qd7 Kh5 84. Qe6 Qg6 85. Qd7 Qf6 86. Ka4 Kg5 87. Kb5
Qf2 88. Qxd6) 82. Qd7+ $2 {Mistake. Qh5 was best.} (82. Qh5 Qh6) 82... Kh6 83.
Qg4 Qg5 84. Qh3 Qg3 85. Qe6+ $6 {Inaccuracy. Qd7 was best.} (85. Qd7 Qg6) 85...
Qg6 86. Qh3 Qg3 $6 {Inaccuracy. Kh5 was best.} (86... Kh5) 87. Qe6+ Kg5 $4 {
Blunder. Qg6 was best.} (87... Qg6 88. Qe7) 88. Qf5+ Kh6 89. Qe6+ Kh5 90. Qf7+
$2 {Mistake. Qf5+ was best.} (90. Qf5+ Qg5) 90... Qg6 91. Qf3+ $4 {Blunder.
Qd7 was best.} (91. Qd7 Qf6) 91... Kg5 $4 {Blunder. Qg4 was best.} (91... Qg4)
92. Qg2+ $4 {Blunder. Qh3 was best.} (92. Qh3 Kh5 93. Qd7 Qg4 94. Qxd6 Qd1+ 95.
Kb2 h3 96. Qxe5+ Kg4 97. Qf5+ Kg3 98. Qe5+ Kg2) 92... Kf6 $2 {Mistake. Kh5 was
best.} (92... Kh5) 93. Qf2+ $2 {Mistake. Qh3 was best.} (93. Qh3 Kg5) 93... Kg5
94. Qg2+ Kh5 95. Qf3+ Qg4 96. Qf7+ Kg5 97. Qe7+ Kf4 98. Qxd6 h3 99. Qf6+ Kg3
100. Qxe5+ Kg2 101. Qd5 h2 102. e5+ Kg1 103. e6 h1=Q 104. Qe5 $6 {Checkmate is
now unavoidable. Ka3 was best.} (104. Ka3 Qd1) 104... Kf2 105. Ka4 Qc6+ $6 {
Lost forced checkmate sequence. Qgd1+ was best.} (105... Qgd1+ 106. Kb5 Qb3+
107. Ka6 Qa8#) 106. Ka3 Qcxe6 107. Qh2+ Ke3 108. Qh1 $6 {Checkmate is now
unavoidable. Qc2 was best.} (108. Qc2 Qe2) 108... Kxd3 109. Qf1+ Ke4 $6 {
Lost forced checkmate sequence. Qee2 was best.} (109... Qee2 110. Qb1+ Kxc3
111. Qb3+ Kd4 112. Ka4 Qxc4+ 113. Ka3 Qxb3+ 114. Kxb3 Kd3 115. Ka2 Qb4 116. Ka1
) 110. Qh1+ $6 {Checkmate is now unavoidable. Kb2 was best.} (110. Kb2 Ke3)
110... Qf3 $6 {Lost forced checkmate sequence. Kd3 was best.} (110... Kd3 111.
Qb1+ Kxc3 112. Qc1+ Kd4 113. Qb2+ Kxc4 114. Qb3+ Kd4 115. Qb2+ Kd5 116. Qb3+
Kc6 117. Qxe6+) 111. Qh7+ $6 {Checkmate is now unavoidable. Qc1 was best.} (
111. Qc1 Qe3) 111... Ke3 112. Qh2 Kd3 113. Qa2 Qee2 114. Qb1+ Qc2 115. Qf1+
Qce2 116. Qc1 Kxc4 117. Qc2 Qxc3+ 0-1

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.10"]
[Round "8.5"]
[White "Ilan Schnaider"]
[Black "Yago Labussiere"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2333"]
[BlackElo "2185"]
[Annotator "Stockfish 16"]
[PlyCount "103"]
[EventDate "2023.??.??"]

{[%evp 0,103,29,39,51,45,45,49,67,59,44,31,43,60,55,59,52,52,76,40,38,41,36,33,
34,29,29,17,49,48,56,48,48,53,75,62,52,44,80,57,46,53,64,49,73,31,21,27,38,40,
31,37,37,44,34,32,54,44,42,45,45,13,21,6,35,0,35,36,41,28,45,54,129,82,131,104,
101,64,89,68,479,56,89,-45,109,57,243,246,245,279,279,285,308,277,743,814,936,
944,985,1003,1037,1037,1044,1087,1117,1117]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 4.
O-O Bd7 5. Re1 a6 6. Bxc6 Bxc6 7. d4 cxd4 8. Nxd4 Rc8 9. c4 Nf6 10. Nc3 e6 11.
b3 Be7 12. Bb2 O-O 13. Qd3 b6 14. Nxc6 Rxc6 15. Qg3 Qc7 16. Rad1 Qb7 17. a4
Rfc8 18. Ne2 Ne8 19. Ba3 R6c7 20. Nd4 Rd7 21. h3 Rcd8 22. b4 Rc8 23. Qd3 Rdc7
24. Rc1 Nf6 25. b5 Nd7 26. Nc6 Rxc6 27. bxc6 Rxc6 28. f4 Nc5 29. Bxc5 Rxc5 30.
e5 dxe5 31. fxe5 Qc6 32. Qb3 Qc7 33. Kh1 g6 34. Rb1 Rc6 $6 {Inaccuracy. Rxe5
was best.} (34... Rxe5 35. Rxe5 Qxe5 36. Qxb6 Bd6 37. Qg1 h5 38. Rf1 Bc7 39. c5
Qg3 40. Rf3 Qe5 41. Rf1) 35. Re4 Kg7 $2 {Mistake. Bc5 was best.} (35... Bc5 36.
Qd3 Qe7 37. Rd1 Rc7 38. g3 Kg7 39. Qd8 Qxd8 40. Rxd8 h5 41. h4 a5 42. Kg2) 36.
Qf3 $6 {Inaccuracy. Rf1 was best.} (36. Rf1 Bc5 37. Ref4 Qxe5 38. Qf3 Rc7 39.
Rxf7+ Rxf7 40. Qxf7+ Kh6 41. Qf4+ Qxf4 42. Rxf4 e5) 36... Bc5 $4 {Blunder.
Rxc4 was best.} (36... Rxc4) 37. Qf6+ $6 {Inaccuracy. Rf4 was best.} (37. Rf4
Qb7 38. a5 Rc7 39. axb6 Qxf3 40. Rxf3 Rb7 41. Rfb3 Kf8 42. g4 Ke8 43. Ra1 Rxb6)
37... Kg8 38. Rd1 $2 {Mistake. Rf4 was best.} (38. Rf4 Qd7 39. a5 Qe8 40. Rff1
Be7 41. Qf4 Bc5 42. Qf3 Qd7 43. Qf6 Qe8 44. Rfd1 Be7) 38... Be7 39. Qf3 Bg5 $4
{Blunder. Rc5 was best.} (39... Rc5 40. Rf1 Bg5 41. Qd3 Rxe5 42. Rxe5 Qxe5 43.
Qd7 Bf6 44. Qb7 Qe2 45. Qb8+ Kg7 46. Qf4) 40. Qg3 $4 {Blunder. Red4 was best.}
(40. Red4 Rxc4 41. Rd7 Qxd7 42. Rxd7 Bf4 43. Rd1 b5 44. a5 Rc1 45. Rxc1 Bxc1
46. Qd3 Kg7) 40... Be7 41. Rf1 $6 {Inaccuracy. Qf4 was best.} (41. Qf4 Qc8 42.
Rf1 Qe8 43. h4 Rc7 44. Rd4 h5 45. Qf3 Bc5 46. Rf4 Qe7 47. Kh2 Ra7) 41... Bf8 $4
{Blunder. f5 was best.} (41... f5 42. Rd4 Rxc4 43. Rxc4 Qxc4 44. Qf4 Qxf4 45.
Rxf4 b5 46. Rd4 Kf8 47. g4 Ke8 48. axb5) 42. Ref4 Rxc4 $2 {Mistake. f5 was
best.} (42... f5) 43. Rxf7 Qxf7 44. Rxf7 Kxf7 45. Qf2+ Kg8 46. Qxb6 Rxa4 $6 {
Inaccuracy. Kf7 was best.} (46... Kf7 47. Qxa6 Rc1+ 48. Kh2 Re1 49. Qb7+ Kg8
50. a5 Bg7 51. a6 Bxe5+ 52. g3 Re2+ 53. Kh1) 47. Qxe6+ Kh8 48. Qf6+ Kg8 49. e6
Bb4 50. Qf7+ Kh8 51. Qe8+ Kg7 52. Qxa4 1-0

[Event "U20 Pan-American Chess Championship Ope"]
[Site "lichess.org"]
[Date "2023.11.10"]
[Round "8.6"]
[White "Pranav Sathish"]
[Black "Nathan Felipe Filgueiras"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2412"]
[BlackElo "2323"]
[Annotator "Stockfish 16"]
[PlyCount "120"]
[EventDate "2023.??.??"]

{[%evp 0,120,39,29,19,-13,-2,2,-1,-17,1,5,24,23,15,21,-7,-7,-7,-18,-19,-29,-21,
-47,-42,-17,-17,5,-2,29,26,28,84,28,86,78,99,106,79,76,91,45,50,-1,69,44,44,40,
40,55,55,72,59,61,68,71,126,90,85,112,200,200,182,178,169,157,205,211,345,123,
307,289,375,385,443,162,196,192,189,207,193,187,187,182,228,149,166,174,182,
182,185,198,203,166,173,155,166,120,120,120,123,103,90,108,123,122,124,121,146,
143,148,137,177,157,200,207,241,247,240,311,332,394,702]} 1. Nf3 d5 2. b3 Bg4
3. Bb2 Nd7 4. e3 Ngf6 5. h3 Bh5 6. g4 Bg6 7. g5 Ne4 8. d3 Nd6 9. Nh4 e5 10.
Nxg6 hxg6 11. Qg4 Be7 12. Bg2 Bxg5 13. Bxd5 Qe7 $6 {Inaccuracy. c6 was best.} (
13... c6 14. Bg2) 14. Ba3 O-O-O 15. Qg2 Qf6 $6 {Inaccuracy. c5 was best.} (
15... c5 16. Nc3) 16. Nd2 $6 {Inaccuracy. Bxd6 was best.} (16. Bxd6 Qxd6 17.
Bxb7+ Kb8 18. Nd2 Bh4 19. Ke2 f5 20. Qc6 Nb6 21. Nc4 Nxc4 22. bxc4 Qxc6) 16...
Bh4 $6 {Inaccuracy. Nb6 was best.} (16... Nb6 17. Bxd6 Nxd5 18. Ne4 Qf5 19.
Nxg5 cxd6 20. Qxd5 Qxg5 21. Qxf7 Qf6 22. Qd5 Kb8 23. Qg2) 17. Bxd6 Qxd6 18.
Bxb7+ Kb8 19. O-O-O $4 {Blunder. Ke2 was best.} (19. Ke2) 19... Qb4 $2 {
Mistake. Qa3+ was best.} (19... Qa3+ 20. Kb1 Nb6 21. Nc4 Nxc4 22. dxc4 e4 23.
Bxe4 Bf6 24. c3 Bxc3 25. f4 f5 26. Bc6) 20. Bd5 $6 {Inaccuracy. Ba8 was best.}
(20. Ba8 f5 21. Qc6 a6 22. Nc4 Ka7 23. Rhf1 g5 24. d4 e4 25. Kb2 Qb8 26. Na5
Rh6) 20... Nb6 21. Bc4 Be7 $6 {Inaccuracy. f5 was best.} (21... f5 22. Nb1 Qa5
23. a3 Nxc4 24. dxc4 e4 25. c3 Qb6 26. Kb2 Qe6 27. Rd4 c5 28. Rdd1) 22. Bxf7 $2
{Mistake. Nb1 was best.} (22. Nb1) 22... Qc3 $6 {Inaccuracy. Rhf8 was best.} (
22... Rhf8 23. Bc4) 23. Nb1 Qa1 24. Kd2 Qxa2 25. Rc1 Rhf8 26. Bxg6 Bb4+ 27. Ke2
Rd5 28. Qe4 $6 {Inaccuracy. Nd2 was best.} (28. Nd2) 28... a5 29. Rhd1 $6 {
Inaccuracy. Qg4 was best.} (29. Qg4 Qb2) 29... Rc5 $4 {Blunder. Rd6 was best.}
(29... Rd6 30. Qg2 Qb2 31. Be4 Nd7 32. Nd2 Bxd2 33. Kxd2 Nc5 34. Ke2 Rdf6 35.
f3 Nxb3 36. Rb1) 30. d4 exd4 31. Rxd4 $6 {Inaccuracy. Qxd4 was best.} (31. Qxd4
Rf6 32. Be4 Ka7 33. h4 Rd6 34. Qxg7 Re6 35. Nd2 Bc3 36. Qf7 Bxd2 37. Qxe6 Bxc1)
31... Qb2 $6 {Inaccuracy. Rf6 was best.} (31... Rf6 32. Nd2 Rcc6 33. Bf5 g6 34.
Qe8+ Ka7 35. Be4 Bxd2 36. Rxd2 Rfe6 37. Bxc6 Rxe8 38. Bxe8) 32. Rcd1 Ka7 33.
Nd2 Bc3 $2 {Mistake. Qc3 was best.} (33... Qc3 34. h4) 34. Rb1 $2 {Mistake.
Nc4 was best.} (34. Nc4 Nxc4 35. Rxc4 Bb4 36. Rd7 Qe5 37. Qxe5 Rxe5 38. Rcxc7+
Kb8 39. Rb7+ Kc8 40. Rxg7 Rg5) 34... Qa2 $6 {Inaccuracy. Qa3 was best.} (34...
Qa3 35. b4 Bxb4 36. Rbxb4 axb4 37. Qe7 Rc6 38. Qxf8 Rxg6 39. Qxb4 Qxb4 40. Rxb4
Rc6 41. Kd1) 35. Qe7 Bxd4 36. Qxf8 Qa3 37. Nc4 $2 {Mistake. b4 was best.} (37.
b4 Bxe3 38. bxc5 Qxc5 39. Qxc5 Bxc5 40. Rb5 Bb4 41. Rxb4 axb4 42. h4 c6) 37...
Qb4 38. Be4 Rxc4 39. Qxb4 Rxb4 40. exd4 Rxd4 41. Ke3 Rd6 $6 {Inaccuracy. Rd7
was best.} (41... Rd7 42. Ra1 a4 43. h4 Ka6 44. bxa4 Ka5 45. f3 c5 46. Kf4 Nc4
47. h5 Rf7+ 48. Kg4) 42. Ra1 $6 {Inaccuracy. Rg1 was best.} (42. Rg1 a4 43.
bxa4 Nc4+ 44. Ke2 Rd7 45. Rg5 Kb6 46. Rb5+ Ka7 47. Rc5 Nd6 48. Bd3 Re7+) 42...
a4 43. bxa4 Nc4+ 44. Ke2 Re6 45. Kd3 Nd6 46. Bd5 $6 {Inaccuracy. f3 was best.}
(46. f3 Kb6 47. a5+ Ka6 48. Rg1 Nxe4 49. fxe4 Rd6+ 50. Ke3 Rc6 51. Rxg7 Rxc2
52. e5 Kxa5) 46... Rh6 47. Bg2 Rf6 48. Rf1 Kb6 49. f4 Kc5 $6 {Inaccuracy. Ka5
was best.} (49... Ka5 50. Kd4) 50. Be4 $6 {Inaccuracy. Ra1 was best.} (50. Ra1)
50... Rh6 51. Rf3 Re6 52. Bh7 Rh6 53. Bg8 Nf5 $2 {Mistake. Kb4 was best.} (
53... Kb4 54. Kd4) 54. Ke4 Nd6+ 55. Ke5 Kb4 56. Bb3 Rf6 $6 {Inaccuracy. Rh5+
was best.} (56... Rh5+ 57. f5) 57. f5 Rh6 58. Be6 Rh4 $6 {Inaccuracy. Rh5 was
best.} (58... Rh5 59. Rf4+ Kc5 60. h4 g5 61. hxg5 Rxg5 62. Bb3 Kc6 63. Ke6 Rg8
64. Bd5+ Kc5 65. Bf3) 59. Rf4+ Rxf4 60. Kxf4 Kxa4 1-0

[Event "U20 Pan-American Chess Championship Ope"]
[Site "Sede Social CFCSN - Rua Gen. "]
[Date "2023.11.10"]
[Round "8.7"]
[White "Montes Orozco, Miguel Angel"]
[Black "Vasquez Vargas, Henry Richard"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "2097"]
[BlackElo "2216"]
[PlyCount "103"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 Nf6 2. Nc3 e5 3. Nf3 d6 4. d4 exd4 5. Nxd4 Be7 6. Bc4 O-O 7. O-O Nxe4 8.
Nxe4 d5 9. Bd3 dxe4 10. Bxe4 c6 11. Qd3 Bf6 12. Bxh7+ Kh8 13. Bf5 Bxf5 14. Nxf5
Qxd3 15. cxd3 Rd8 16. Be3 Na6 17. Rfd1 Nb4 18. d4 Rd5 19. Ng3 Nc2 20. Rac1 Nxd4
21. Kf1 Rad8 22. Ne4 Be5 23. Rc5 Nf5 24. Rcxd5 Rxd5 25. Rxd5 cxd5 26. Nc5 b6
27. Nd3 Bxh2 28. Nb4 Be5 29. b3 Ne7 30. Ke2 f5 31. Bg5 Bf6 32. Bxf6 gxf6 33.
Ke3 a5 34. Nc2 Kg7 35. Nd4 Kf7 36. Kf4 Ke8 37. Nxf5 Ng6+ 38. Ke3 Kd7 39. Kd4
Nf4 40. g3 Ne2+ 41. Kxd5 Nc3+ 42. Kc4 Nxa2 43. Kb5 Kc7 44. Ne3 Nc3+ 45. Ka6 Kc6
46. Nc4 Nd5 47. Nxb6 Nxb6 48. Kxa5 Nd5 49. b4 Nc3 50. Ka6 Nb5 51. g4 Nc7+ 52.
Ka5 1/2-1/2

[Event "U20 Pan-American Chess Championship Ope"]
[Site "Sede Social CFCSN - Rua Gen. "]
[Date "2023.11.10"]
[Round "8.8"]
[White "Vazquez, Facundo"]
[Black "Tomiello, Mateus Costamilan"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2407"]
[BlackElo "2145"]
[PlyCount "49"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 Be7 7. Bd3 h6 8. Bh4
O-O 9. Nge2 Re8 10. O-O Nbd7 11. a4 a5 12. f3 Nf8 13. Qc2 Ne6 14. Rad1 Qb6 15.
Kh1 Ng4 16. Bh7+ Kh8 17. fxg4 Bxh4 18. Rxf7 Bf6 19. Bg6 Rg8 20. Rf1 Ng5 21. Nf4
Qd8 22. Bh5 Re8 23. h4 Ne4 24. Nxe4 Rxe4 25. Ng6+ 1-0

[Event "U20 Pan-American Chess Championship Ope"]
[Site "Sede Social CFCSN - Rua Gen. "]
[Date "2023.11.10"]
[Round "8.9"]
[White "Seccafim, Caic Dos Santos"]
[Black "Silva, Kaua Marques"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2062"]
[BlackElo "2235"]
[PlyCount "154"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Bg5 dxc4 7. Bxc4 h6 8.
Bxf6 exf6 9. Nf3 Bd6 10. O-O O-O 11. h3 a6 12. Rc1 Bf4 13. Ra1 Ne7 14. a3 b5
15. Bb3 Bb7 16. d5 Qd7 17. Qd3 Qf5 18. Rad1 Rad8 19. Rfe1 Qxd3 20. Rxd3 Ng6 21.
g3 Bd6 22. h4 Rd7 23. Ne4 Rfd8 24. Nxd6 Rxd6 25. h5 Nf8 26. Bc2 Nd7 27. Nh4 Ne5
28. Rd4 Bc8 29. f4 Ng4 30. Bb1 Kf8 31. Be4 Re8 32. Rdd1 f5 33. Bf3 Nf6 34. Re5
Ng4 35. Bxg4 fxg4 36. Ng2 Red8 37. Ne3 f6 38. Re4 Bd7 39. Kf2 Be8 40. Rh1 Bf7
41. Rd4 R6d7 42. Rd2 Bxd5 43. Rhd1 Bc6 44. Rxd7 Rxd7 45. Rxd7 Bxd7 46. Nd5 Bc6
47. Nb4 Bb7 48. Ke3 Ke7 49. Nd3 Kd6 50. Kd4 Bc6 51. b4 Be8 52. Nc5 Bxh5 53.
Nxa6 Be8 54. Nc5 Bc6 55. Ke3 g6 56. Nd3 Kd5 57. Nf2 h5 58. Ne4 Ke6 59. Nd2 g5
60. Nb3 Kd5 61. fxg5 fxg5 62. Nd4 Bd7 63. Nc2 Ke5 64. Nd4 h4 65. Ne2 h3 66. Kf2
Bc6 67. Kg1 Ke4 68. Kh2 Kd3 69. Nc1+ Kc2 70. Ne2 Kb2 71. Nd4 Bd7 72. a4 bxa4
73. b5 a3 74. b6 Bc8 75. Kg1 a2 76. Nb3 Kxb3 77. Kh2 Bb7 0-1

[Event "U20 Pan-American Chess Championship Ope"]
[Site "Sede Social CFCSN - Rua Gen. "]
[Date "2023.11.10"]
[Round "8.10"]
[White "Ribeiro, Matheus Mendes Domi"]
[Black "Castro Salgado, Pablo"]
[Result "1/2-1/2"]
[ECO "A20"]
[WhiteElo "2150"]
[BlackElo "2150"]
[PlyCount "74"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. c4 e5 2. g3 c6 3. Nf3 e4 4. Nd4 d5 5. cxd5 Qxd5 6. Nc2 Nf6 7. Nc3 Qe5 8. Bg2
Be7 9. Ne3 Na6 10. O-O Nb4 11. d3 exd3 12. exd3 Be6 13. a3 Nbd5 14. Nexd5 cxd5
15. Bf4 Qf5 16. Qa4+ Kf8 17. Rfe1 Nd7 18. Qb5 Nc5 19. Bxd5 Bxd5 20. Rxe7 Bc6
21. Bd6 Bxb5 22. Re5+ Kg8 23. Rxf5 Nb3 24. Rd1 Bd7 25. Rf4 h5 26. Rc4 Re8 27.
Re4 Rh6 28. Rxe8+ Bxe8 29. Bf4 Re6 30. d4 Bd7 31. d5 Re8 32. Kg2 Nc5 33. Be3
Na4 34. Bxa7 Nxb2 35. Rb1 Nd3 36. Rxb7 Re7 37. Nb5 Kf8 1/2-1/2

[Event "U20 Pan-American Chess Championship Ope"]
[Site "Sede Social CFCSN - Rua Gen. "]
[Date "2023.11.10"]
[Round "8.11"]
[White "Casalaspro, Mathias Andre"]
[Black "Cahuapaza Tarapaca, Leonardo"]
[Result "1-0"]
[ECO "B11"]
[WhiteElo "2060"]
[BlackElo "1818"]
[PlyCount "95"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 c6 2. Nc3 d5 3. Qe2 dxe4 4. Nxe4 e6 5. d3 Nf6 6. Bd2 Nbd7 7. O-O-O Be7 8.
f4 Qc7 9. Nf3 Nd5 10. g3 b5 11. c4 bxc4 12. dxc4 Ba6 13. Qe1 N5f6 14. Bc3 O-O
15. Ne5 Rfd8 16. Nxf7 Re8 17. Neg5 Nf8 18. Qe5 Qxe5 19. Nxe5 h6 20. Ngf3 Ne4
21. Bd4 c5 22. Be3 Bb7 23. Bg2 Nf6 24. Rd2 Rac8 25. Rhd1 Rc7 26. Rd3 Ba8 27.
Ra3 N8d7 28. Bh3 Bf8 29. Ra6 Nb6 30. Nh4 g5 31. fxg5 hxg5 32. Bxg5 Bg7 33. Rd6
Ne4 34. Rxe6 Rxe6 35. Bxe6+ Kf8 36. Bf4 Ke8 37. Nf5 Nf2 38. Ra3 Be4 39. Ng4
Bxf5 40. Bxf5 Rb7 41. Re3+ Kf8 42. Nxf2 Nxc4 43. Rb3 Re7 44. Ne4 Bd4 45. h4 a5
46. a4 Nxb2 47. Bd6 Kf7 48. Bxe7 1-0

[Event "U20 Pan-American Chess Championship Ope"]
[Site "Sede Social CFCSN - Rua Gen. "]
[Date "2023.11.10"]
[Round "8.12"]
[White "Da Fonseca Pinto, Joao Gabriel Alves"]
[Black "Munoz Ramos, Christopher"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "1762"]
[BlackElo "2038"]
[PlyCount "80"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e5 7. Nb3 Be6 8. Be3
Be7 9. Qd2 O-O 10. O-O-O Nbd7 11. g4 b5 12. g5 b4 13. Nd5 Nxd5 14. exd5 Bf5 15.
h4 a5 16. Bd3 Bxd3 17. Qxd3 a4 18. Nd2 Qc7 19. Kb1 f5 20. gxf6 Bxf6 21. Ne4
Rfb8 22. Ng5 Bxg5 23. hxg5 g6 24. Rh6 Nf8 25. f4 b3 26. cxb3 axb3 27. a3 e4 28.
Qd2 Rc8 29. Rc1 Qb7 30. Rhh1 Qb5 31. Rhd1 Rab8 32. Qd4 Qe2 33. Bd2 Rxc1+ 34.
Rxc1 Rb5 35. Bb4 Qd3+ 36. Qxd3 exd3 37. Rc3 Rxd5 38. Kc1 Ne6 39. Rc6 Nxf4 40.
Rxd6 Rxg5 0-1

[Event "U20 Pan-American Chess Championship Ope"]
[Site "Sede Social CFCSN - Rua Gen. "]
[Date "2023.11.10"]
[Round "8.13"]
[White "Reyes Zavaleta, Sergio Gabriel"]
[Black "Varillas Jimenez, Ivan"]
[Result "0-1"]
[ECO "A40"]
[WhiteElo "1287"]
[BlackElo "1985"]
[PlyCount "86"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 g6 2. Nf3 Bg7 3. c4 c5 4. dxc5 Na6 5. Nc3 Nxc5 6. e3 Nf6 7. Bd2 O-O 8.
Rc1 b6 9. b4 Ne6 10. Be2 Bb7 11. O-O Rc8 12. Qb3 Qc7 13. Nd5 Qd8 14. Nc3 d6 15.
Rfd1 Qd7 16. Be1 Rfd8 17. Qa3 Bxf3 18. Bxf3 Rxc4 19. Be2 Rcc8 20. Bb5 Rxc3 21.
Qa4 Rxc1 22. Bxd7 Rxd1 23. Qxd1 Rxd7 24. a4 Rc7 25. f3 d5 26. Bg3 Rc4 27. b5
Nc5 28. Bb8 Rxa4 29. h3 e6 30. Bd6 Ne8 31. Bxc5 Ra1 32. Qxa1 Bxa1 33. Bb4 Nc7
34. Kf2 Nxb5 35. Ke2 Bc3 36. Be7 f6 37. Kd3 Kf7 38. Ba3 Nxa3 39. Kxc3 a5 40.
Kb3 Nc4 41. e4 b5 42. Kc3 b4+ 43. Kb3 Ke7 0-1

[Event "U20 Pan-American Chess Championship Ope"]
[Site "Sede Social CFCSN - Rua Gen. "]
[Date "2023.11.10"]
[Round "8.14"]
[White "Nascimento, Nicolas Daniel Trin"]
[Black "Lima, Carlos Eduardo I De"]
[Result "1/2-1/2"]
[ECO "A30"]
[WhiteElo "1797"]
[BlackElo "1857"]
[PlyCount "152"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. Nf3 Nf6 2. d4 b6 3. g3 Bb7 4. Bg2 e6 5. O-O Be7 6. c4 O-O 7. Nc3 d5 8. cxd5
Nxd5 9. Re1 Nxc3 10. bxc3 c5 11. e4 Nc6 12. Bb2 Rc8 13. Rc1 Na5 14. Qe2 Qd7 15.
Red1 Qa4 16. Ba1 Nc4 17. Nd2 cxd4 18. cxd4 Na5 19. Nf1 Ba3 20. Rxc8 Rxc8 21.
Ne3 Bf8 22. d5 exd5 23. exd5 Nc4 24. Qg4 h5 25. Qxh5 Nxe3 26. fxe3 Qa3 27. Bd4
Rc1 28. Be4 Rxd1+ 29. Qxd1 g6 30. Qd2 Qa4 31. Bf3 Qb5 32. Bb2 Ba6 33. Bg2 Qd3
34. Qxd3 Bxd3 35. Be5 Be7 36. Bb8 Bc5 37. Kf2 a5 38. d6 Bb5 39. Bb7 Bd7 40. Kf3
Kf8 41. e4 f6 42. Bc7 a4 43. h4 a3 44. Bd5 Bd4 45. g4 Be5 46. Bxb6 Bxd6 47. Bd4
Ke7 48. h5 gxh5 49. gxh5 Be8 50. Kg4 Bd7+ 51. Kh4 Be8 52. h6 Bg6 53. Kg4 Bh7
54. Kh4 Bb4 55. e5 fxe5 56. Bxe5 Bd2 57. Kh5 Bc1 58. Bd4 Bb2 59. Be3 Kf6 60.
Bg5+ Ke5 61. Bf7 Kf5 62. Be7 Bc1 63. Be8 Bb2 64. Bf7 Bc1 65. Bf8 Bb2 66. Bg7
Bc1 67. Be8 Bb2 68. Bf8 Kf6 69. Bg7+ Kf5 70. Ba4 Kf4 71. Bb3 Bc1 72. Bf8 Bb2
73. Be7 Ke5 74. Bd8 Bc1 75. Be7 Bb2 76. Bb4 Kf6 1/2-1/2

[Event "Round 9: Faustino Oro - Diego Saul Rodri"]
[Site "lichess.org"]
[Date "2023.11.11"]
[Round "9.1"]
[White "Faustino Oro"]
[Black "Diego Saul Rodri Flores Quilla"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "2377"]
[BlackElo "2414"]
[Annotator "Stockfish 16"]
[PlyCount "104"]
[EventDate "2023.??.??"]

{[%evp 0,104,-6,-5,110,-1,70,-45,16,-20,23,-78,67,-87,34,-19,19,-7,0,-44,8,-8,
9,-1,31,20,13,2,36,39,30,34,35,18,16,8,29,23,26,-7,50,42,76,48,47,43,43,35,57,
47,38,32,57,14,34,19,32,-4,30,7,25,-70,0,0,0,0,9,-5,-1,-1,-10,-18,-15,-50,-35,
-29,0,-154,-95,-95,-101,-40,-61,-50,-53,-56,-53,-47,-60,-63,-67,-62,-58,-58,
-85,-187,-228,-342,-361,-439,-439,-582,-633,-633,-635,-659,-663]} 1. Nf3 c5 2.
b3 d6 3. c4 Nf6 4. d4 cxd4 5. Nxd4 g6 6. e3 Bg7 7. Bb2 O-O 8. Be2 Nc6 9. O-O
Bd7 10. Nd2 Rc8 11. Bf3 a6 12. Nxc6 Bxc6 13. Qe2 a5 14. Rfd1 Qb6 15. Bd4 Qa6
16. Bxc6 bxc6 17. Nf3 Rfe8 18. Qc2 Rb8 19. Rab1 Rb4 20. Bc3 Rb7 21. e4 a4 22.
e5 axb3 23. axb3 dxe5 24. Bxe5 c5 25. h3 Qc6 26. Rd3 Rd7 27. Re3 Bh6 28. Re2
Rb7 29. Rbe1 Nh5 30. Nh2 Nf4 31. Bxf4 Bxf4 32. Ng4 h5 $4 {Blunder. Bg5 was
best.} (32... Bg5 33. Qc3 Rd8 34. h4 Bf6 35. Nxf6+ Qxf6 36. Qxf6 exf6 37. Re3
Kg7 38. g3 Ra8 39. Re7) 33. Ne5 $4 {Blunder. Re6 was best.} (33. Re6 Qc8 34.
Nf6+ Kf8 35. R6e4 Rd8 36. Nh7+ Kg7 37. Rxf4 f6 38. Ng5 fxg5 39. Qc3+ Kg8) 33...
Bxe5 34. Rxe5 e6 35. R1e3 Qd6 36. Rg5 Rd8 37. Qe4 Ra7 38. Reg3 $6 {Inaccuracy.
Re1 was best.} (38. Re1) 38... Ra1+ 39. Kh2 Kf8 40. Qe5 $6 {Inaccuracy. h4 was
best.} (40. h4 Ra2) 40... Qxe5 41. Rxe5 Rdd1 42. Rge3 h4 43. g3 Rh1+ 44. Kg2
Rag1+ 45. Kf3 Rxh3 46. Kg4 Rh2 47. Rxc5 $4 {Blunder. Rf3 was best.} (47. Rf3
hxg3 48. Rxg3 Rf1 49. Rxc5 Rhxf2 50. Rc7 Kg7 51. Re3 Rf4+ 52. Kg3 Kh6 53. Ra7
g5) 47... Rxf2 48. Kxh4 Kg7 49. Kg4 Kh6 50. Rf3 f5+ 51. Kf4 Re2 52. Re3 Rf1+
0-1

[Event "Round 9: Lucas Costamilan Tomiello - Iva"]
[Site "lichess.org"]
[Date "2023.11.11"]
[Round "9.2"]
[White "Lucas Costamilan Tomiello"]
[Black "Ivan Excender Soriano Quispe"]
[Result "1-0"]
[ECO "C77"]
[WhiteElo "2279"]
[BlackElo "2214"]
[Annotator "Stockfish 16"]
[PlyCount "85"]
[EventDate "2023.??.??"]

{[%evp 0,85,26,18,18,18,18,11,17,-6,4,4,5,-19,3,6,3,-34,-21,-30,4,-3,-4,-16,-6,
-26,-16,-18,5,10,7,2,33,23,30,-18,-1,16,30,42,48,34,34,42,45,43,43,53,56,33,44,
34,34,34,19,9,32,22,98,101,101,101,163,198,163,151,161,161,169,211,304,287,325,
324,324,324,327,314,342,332,350,367,371,376,383,329,425,432]} 1. e4 e5 2. Nf3
Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 g6 7. O-O Bg7 8. Re1 O-O 9. Nbd2 Nd7
10. Nf1 Nc5 11. Bc2 Ne6 12. Ng3 Qf6 13. Be3 Nf4 14. h3 h5 15. d4 h4 $6 {
Inaccuracy. Bh6 was best.} (15... Bh6) 16. Nf1 Bd7 17. dxe5 $6 {Inaccuracy.
N1h2 was best.} (17. N1h2 Rfd8 18. Qd2 Na5 19. b3 b5 20. Kh1 c5 21. d5 Nb7 22.
g3 Nxh3 23. Kg2 b4) 17... Nxe5 18. Nxe5 Qxe5 19. Nh2 $6 {Inaccuracy. Qd2 was
best.} (19. Qd2 Bh6 20. Kh1 Qf6 21. Nh2 Rfe8 22. Rg1 Bg5 23. Rae1 Rad8 24. Ref1
c5 25. g3 Nxh3) 19... Qg5 20. Qf3 Be5 21. Kh1 Qf6 22. Rad1 Rad8 23. Bb3 Kg7 24.
Rd2 Rh8 25. Qd1 Qg5 26. Rg1 Bc6 27. Rd4 Rde8 $6 {Inaccuracy. Bd7 was best.} (
27... Bd7 28. a4 b6 29. Nf3 Qe7 30. Rd2 a5 31. Bd5 c5 32. Re1 g5 33. Nh2 Nxd5
34. Rxd5) 28. Qd2 Qf6 $6 {Inaccuracy. Bb5 was best.} (28... Bb5 29. a4) 29. Ng4
Qg5 30. Bd5 Bd7 31. Nxe5 dxe5 32. Bxf7 exd4 $6 {Inaccuracy. Ref8 was best.} (
32... Ref8 33. Rxd7 Rxf7 34. Rxf7+ Kxf7 35. Bxf4 exf4 36. Rd1 Re8 37. Qd7+ Re7
38. Qd8 Qe5 39. f3) 33. Bxf4 dxc3 34. Qxd7 Re7 35. Qd4+ Qf6 36. e5 Qb6 37. Qxb6
cxb6 38. e6 Rd8 39. bxc3 Rd5 40. Be3 b5 41. Bd4+ Kf8 42. Rd1 b4 43. Bg7+ 1-0

[Event "Round 9: Juan Martin Ibarra - Ilan Schna"]
[Site "lichess.org"]
[Date "2023.11.11"]
[Round "9.3"]
[White "Juan Martin Ibarra"]
[Black "Ilan Schnaider"]
[Result "0-1"]
[ECO "B94"]
[WhiteElo "2213"]
[BlackElo "2333"]
[Annotator "Stockfish 16"]
[PlyCount "90"]
[EventDate "2023.??.??"]

{[%evp 0,90,26,18,45,45,91,61,67,30,26,21,56,52,67,52,55,59,49,-18,-20,-29,48,
5,22,0,-26,-18,-18,-5,6,-58,22,-39,-54,-58,-54,-72,-63,-98,-70,-112,-107,-137,
-7,93,-41,-28,-52,-26,-26,-48,58,-35,-41,0,0,0,0,0,0,0,0,0,0,0,0,-25,-54,-43,
-10,-60,-36,-36,-26,-21,-59,-71,17,25,28,-47,0,0,0,-795,-937,-533,-1605,-29985,
-29986,-29987,-29988]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6.
Bg5 Nbd7 7. Bc4 Qb6 8. Bb3 e6 9. Bxf6 Nxf6 10. Qd2 Nd7 11. O-O-O Nc5 12. f4 Bd7
13. Kb1 Be7 14. f5 Bf6 15. g4 $6 {Inaccuracy. Nf3 was best.} (15. Nf3 O-O-O 16.
Rhe1 Kb8 17. Ng5 Rdf8 18. Nf3) 15... O-O-O 16. Rhf1 h6 17. Nde2 Bc6 18. Nf4 $6
{Inaccuracy. Nd4 was best.} (18. Nd4 Rhe8 19. fxe6 fxe6 20. Rxf6 gxf6 21. Qxh6
Bxe4 22. Nxe4 Nxe4 23. Nxe6 Nc3+ 24. bxc3 Rxe6) 18... Rhe8 19. Nh5 $6 {
Inaccuracy. Qe3 was best.} (19. Qe3 Kb8) 19... Be5 20. fxe6 fxe6 21. Rf7 a5 $2
{Mistake. Rf8 was best.} (21... Rf8 22. Rdf1) 22. Nxg7 a4 23. Nxe8 Bxe8 24. Rf8
$6 {Inaccuracy. Rh7 was best.} (24. Rh7 axb3) 24... axb3 25. axb3 $6 {
Inaccuracy. cxb3 was best.} (25. cxb3 Qb4) 25... Kc7 26. Rdf1 $6 {Inaccuracy.
b4 was best.} (26. b4 Qa6) 26... Ra8 $4 {Blunder. Qa6 was best.} (26... Qa6)
27. R1f7+ Nd7 28. Re7 Qa5 29. Nb5+ Qxb5 30. Rexe8 Rxe8 31. Rxe8 Nc5 32. Re7+
Kb8 33. Qxh6 Qf1+ 34. Qc1 $2 {Mistake. Ka2 was best.} (34. Ka2 Nxb3 35. cxb3
Qa6+ 36. Kb1 Qd3+ 37. Kc1 Bd4 38. Qf8+ Ka7 39. Rxb7+ Kxb7 40. Qe7+ Kc6) 34...
Qe2 $2 {Mistake. Qf8 was best.} (34... Qf8 35. Qg5 Bf6 36. Re8+ Qxe8 37. Qxf6
Nxe4 38. Qf4 Qg6 39. h4 e5 40. Qf8+ Kc7 41. g5) 35. Re8+ Kc7 36. Re7+ $2 {
Mistake. h4 was best.} (36. h4 Qxe4 37. Qf1 Nxb3 38. Qb5 Qh1+ 39. Ka2 Qa1+ 40.
Kxb3 Qxb2+ 41. Ka4 Qa1+ 42. Kb3) 36... Kd8 37. Rf7 Nxe4 38. c4 Nd2+ 39. Ka2 Kc8
$4 {Blunder. Ne4 was best.} (39... Ne4 40. Kb1) 40. Qc2 Qe3 41. c5 dxc5 42. g5
$4 {Checkmate is now unavoidable. b4 was best.} (42. b4 Ne4 43. Qc4 Nc3+ 44.
bxc3 Qd2+ 45. Kb1 Qd1+ 46. Kb2 Qd2+) 42... c4 43. Rf8+ Kd7 44. Qh7+ Kc6 45.
Rc8+ Kb6 0-1

[Event "Round 9: Luigy Lira De Siqueira - Fabian"]
[Site "lichess.org"]
[Date "2023.11.11"]
[Round "9.4"]
[White "Luigy Lira De Siqueira"]
[Black "Fabian Ricardo Reyes Zavaleta"]
[Result "0-1"]
[ECO "B81"]
[WhiteElo "2179"]
[BlackElo "2122"]
[Annotator "Stockfish 16"]
[PlyCount "52"]
[EventDate "2023.??.??"]

{[%evp 0,52,26,18,45,49,78,77,78,21,26,24,92,61,54,12,17,8,-3,1,-7,2,7,10,11,
20,20,-30,13,21,68,86,40,44,44,112,113,27,30,52,0,0,0,-56,104,-162,-170,-125,0,
-253,-339,-425,-410,-647,-647]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5.
Nc3 e6 6. g4 h6 7. h4 Nc6 8. Rg1 d5 9. exd5 Nxd5 10. Nxd5 Qxd5 11. Bg2 Qc4 12.
Nxc6 bxc6 13. Be3 Ba6 14. c3 Qb5 $4 {Blunder. Rd8 was best.} (14... Rd8 15. Qc2
) 15. Qf3 $6 {Inaccuracy. a4 was best.} (15. a4 Qb7 16. Qd4 e5 17. Qxe5+ Be7
18. Bd4 Bc4 19. O-O-O O-O-O 20. Be4 g6 21. Bxc6 Qxc6) 15... Rc8 16. O-O-O Be7
17. g5 hxg5 18. hxg5 Qa4 19. g6 f5 $6 {Inaccuracy. f6 was best.} (19... f6 20.
Qe4 Qxe4 21. Bxe4 Bc4 22. Rd4 Bb5 23. Bc2 c5 24. Re4 e5 25. f4 Bc6 26. Ba4) 20.
Rh1 $6 {Inaccuracy. Rd4 was best.} (20. Rd4 Qxa2 21. Qxc6+ Rxc6 22. Bxc6+ Kf8
23. Rgd1 Qa5 24. Ra4 Qc7 25. Rxa6 Qc8 26. Bb5 f4) 20... Rg8 $4 {Blunder. Rxh1
was best.} (20... Rxh1 21. Rxh1 Qxa2 22. Rh8+ Kd7 23. Qd1+ Bd6 24. Qd4 Qa1+ 25.
Kc2 Bd3+ 26. Kxd3 e5 27. Bxc6+) 21. Rd4 Qxa2 22. Rhd1 $4 {Blunder. Qxc6+ was
best.} (22. Qxc6+) 22... Bb5 23. Qf4 c5 $2 {Mistake. Rf8 was best.} (23... Rf8
24. Bf1 Bxf1 25. Rd7 Ba3 26. bxa3 Qxa3+ 27. Kc2 Qa2+ 28. Kc1 Qa1+ 29. Kc2) 24.
Re4 $4 {Blunder. Bf1 was best.} (24. Bf1 Bc6) 24... Rf8 25. Rxe6 $6 {
Inaccuracy. Rc4 was best.} (25. Rc4 Qa1+ 26. Kc2 Qa6 27. Bf1 Rf6 28. Bc1 Rxg6
29. Be2 Rg4 30. Bxg4 Bxc4 31. Bh5+ Kf8) 25... Qxe6 26. Re1 $6 {Inaccuracy. Bd5
was best.} (26. Bd5 Qxg6 27. Re1 Kd7 28. c4 Bd6 29. Qf3 Bc6 30. Rd1 Bxd5 31.
Rxd5 Rc6 32. Bf4 Rd8) 26... Qa2 0-1

[Event "Round 9: Kaua Marques Silva - Pranav Sat"]
[Site "lichess.org"]
[Date "2023.11.11"]
[Round "9.5"]
[White "Kaua Marques Silva"]
[Black "Pranav Sathish"]
[Result "0-1"]
[ECO "B40"]
[WhiteElo "2235"]
[BlackElo "2412"]
[Annotator "Stockfish 16"]
[PlyCount "92"]
[EventDate "2023.??.??"]

{[%evp 0,92,26,18,49,37,51,10,32,-14,26,-1,-5,-3,-11,-15,-10,-17,2,0,0,-13,-9,
-4,3,-4,0,4,17,17,5,15,17,17,11,23,43,33,36,32,112,105,110,78,78,89,94,61,89,
28,11,12,19,16,45,5,28,29,49,46,48,-83,-103,-90,-95,-77,-120,-103,-75,-42,-52,
-107,-113,-113,-98,-219,-232,-285,-305,-282,-354,-363,-335,-433,-481,-503,-477,
-497,-449,-492,-252,-288,-249,-445,-463]} 1. e4 c5 2. Nf3 e6 3. g3 Nc6 4. Bg2
Nf6 5. Qe2 e5 6. O-O Be7 7. c3 O-O 8. Re1 Re8 9. d3 d6 10. Bg5 h6 11. Bxf6 Bxf6
12. Nbd2 Be6 13. Nc4 d5 14. exd5 Bxd5 15. Ne3 Be6 16. Nd2 Qd7 17. h4 Be7 18.
Ndc4 f6 19. Be4 f5 $6 {Inaccuracy. b5 was best.} (19... b5 20. Qf3 Rac8 21. Nd2
Bd8 22. a4 b4 23. g4 Ne7 24. Bb7 Rb8 25. Ba6 c4 26. Ndxc4) 20. Bxc6 Qxc6 21.
Nxe5 Qc7 22. f4 $6 {Inaccuracy. Ng6 was best.} (22. Ng6 Qd7 23. Qf3 Bd6 24. h5
Rad8 25. c4 b5 26. b3 Kh7 27. Rad1 Bc7 28. Nd5 Bxd5) 22... Bf6 23. Nc2 $6 {
Inaccuracy. d4 was best.} (23. d4) 23... Bd5 $6 {Inaccuracy. Rad8 was best.} (
23... Rad8) 24. Qe3 $6 {Inaccuracy. Ne3 was best.} (24. Ne3) 24... Rad8 25. c4
Bc6 26. Re2 Bxe5 27. fxe5 f4 28. gxf4 Qf7 29. d4 Qxc4 30. Qb3 $2 {Mistake. Rd2
was best.} (30. Rd2 Qf7) 30... Qxb3 31. axb3 cxd4 32. Rf2 d3 33. Ne3 g5 $6 {
Inaccuracy. Rf8 was best.} (33... Rf8 34. Nc4 Rd4 35. Raf1 Bd7 36. Kh2 Bg4 37.
Kg3 Be2 38. Ra1 Rc8 39. f5 h5 40. e6) 34. Ng4 $6 {Inaccuracy. hxg5 was best.} (
34. hxg5 hxg5) 34... Kg7 35. fxg5 hxg5 36. Rf5 gxh4 37. Raf1 $6 {Inaccuracy.
Kh2 was best.} (37. Kh2 Re6) 37... Re6 38. Kh2 $6 {Inaccuracy. Rf7+ was best.}
(38. Rf7+ Kg8 39. R7f4 d2 40. Rd1 Rg6 41. Kf2 h3 42. Ke3 Kg7 43. b4 Rd5 44.
Rxd2 Rxd2) 38... d2 39. Ne3 Rd3 40. Rf7+ Kg6 41. Nd1 Rxe5 42. R7f6+ Kg5 43.
R6f2 Bd7 44. Rg2+ Rg3 $6 {Inaccuracy. Kh5 was best.} (44... Kh5 45. Rf8 Re8 46.
Rxe8 Bxe8 47. Rg7 Bc6 48. Kg1 Bf3 49. Nf2 Rxb3 50. Rh7+ Kg5 51. Rg7+) 45. Rxd2
Bc6 46. Rdf2 $6 {Inaccuracy. Rg1 was best.} (46. Rg1 Rxg1) 46... Bb5 0-1

[Event "Round 9: Henry Richard Vasquez Vargas - "]
[Site "lichess.org"]
[Date "2023.11.11"]
[Round "9.6"]
[White "Henry Richard Vasquez Vargas"]
[Black "Facundo Vazquez"]
[Result "1/2-1/2"]
[ECO "D01"]
[WhiteElo "2216"]
[BlackElo "2407"]
[Annotator "Stockfish 16"]
[PlyCount "80"]
[EventDate "2023.??.??"]

{[%evp 0,80,26,26,29,22,18,14,8,8,23,38,27,20,20,23,17,17,-2,2,-5,-5,-1,-20,
-24,-40,-33,-48,-58,-38,-38,-23,-25,-21,-20,-20,-17,-29,-50,-50,-54,-48,-48,
-57,-44,-54,-57,-54,-45,-42,-46,-62,-73,-64,-69,-69,-63,-79,-81,-85,-77,-84,
-87,-75,-64,-87,-61,-61,-61,-61,-61,-51,-64,-77,-85,-81,-75,-75,-75,-75,-75,
-475,-75]} 1. d4 Nf6 2. Nc3 d5 3. Bf4 e6 4. e3 Bb4 5. Bd3 c5 6. dxc5 Nbd7 7.
Nge2 a6 8. Bg3 Nxc5 9. a3 Nxd3+ 10. Qxd3 Be7 11. O-O-O O-O 12. e4 dxe4 13. Nxe4
Qxd3 14. Nxf6+ Bxf6 15. Rxd3 b5 16. f3 Bb7 17. Rhd1 Rfc8 18. Nc3 Bxc3 19. Rxc3
Rxc3 20. bxc3 Bd5 21. Rd4 Rc8 22. Kd2 f6 23. a4 Kf7 24. axb5 axb5 25. Be1 Ra8
26. Rb4 Bc4 27. Rb1 Ra2 28. Rc1 e5 29. Bf2 Ke6 30. Bc5 $6 {Inaccuracy. h4 was
best.} (30. h4) 30... h5 $6 {Inaccuracy. Kf5 was best.} (30... Kf5) 31. h4 f5
32. g3 Bd5 33. Ke3 Ra4 34. Bb4 Ra2 35. f4 e4 36. Bf8 g6 37. Bb4 Bc4 38. Bf8 Ra8
39. Bb4 Ra2 40. Ba3 $4 {Blunder. Bc5 was best.} (40. Bc5 Kd7 41. Kd4 Be2 42.
Bb4 Kc6 43. Ke3 Bg4 44. Kd4 Ra4 45. Rb1 Ra8 46. c4 bxc4) 40... Be2 $4 {Blunder.
Rxa3 was best.} (40... Rxa3 41. Kd4 Kd6 42. g4 fxg4 43. Rd1 g3 44. Rg1 Be6 45.
Rxg3 Bf5 46. Rg1 e3 47. Rxg6+) 1/2-1/2

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.11"]
[Round "9"]
[Board "7"]
[White "Labussiere, Yago"]
[Black "Piccoli, Lucas Fonseca"]
[Result "1/2-1/2"]
[ECO "A30"]
[WhiteElo "2185"]
[BlackElo "2225"]
[PlyCount "91"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. c4 e6 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. d4 cxd4 7. Qxd4 Be7 8. Nc3 d6
9. b3 O-O 10. Rd1 Nbd7 11. Bb2 a6 12. h3 Qc7 13. Rac1 Rac8 14. Qf4 Ne5 15. Qe3 Ned7
16. g4 Rfd8 17. g5 Nh5 18. h4 Bf8 19. Ne1 Qb8 20. Nd3 b5 21. cxb5 Bxg2 22. Kxg2 axb5
23. Qf3 g6 24. e3 Bg7 25. a3 Nc5 26. Nxc5 Rxc5 27. e4 Rdc8 28. Rd3 Be5 29. Kg1 b4
30. axb4 Qxb4 31. Kf1 Qxb3 32. Nd1 Qb5 33. Rxc5 Rxc5 34. Bxe5 dxe5 35. Kg1 Rc1 36.
Rd8+ Kg7 37. Qa3 Rxd1+ 38. Rxd1 Qe2 39. Rd8 Qe1+ 40. Kg2 Nf4+ 41. Kf3 Qe2+ 42. Kg3
Nh5+ 43. Kg2 Nf4+ 44. Kg3 Nh5+ 45. Kg2 Nf4+ 46. Kg3  1/2-1/2

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.11"]
[Round "9"]
[Board "8"]
[White "Castro Salgado, Pablo"]
[Black "Montes Orozco, Miguel Angel"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2150"]
[BlackElo "2097"]
[PlyCount "104"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. Nc3 Bb4 5. cxd5 exd5 6. Bg5 h6 7. Bh4 g5 8. Bg3 Ne4
9. Nd2 Nxg3 10. hxg3 c6 11. Qc2 Be6 12. a3 Be7 13. O-O-O Nd7 14. e4 Qb6 15. f4 dxe4
16. Bc4 e3 17. Bxe6 exd2+ 18. Rxd2 fxe6 19. Qg6+ Kd8 20. Qxe6 Bf6 21. Re1 Kc7 22.
Rc2 Rae8 23. Nd5+ Kd8 24. Nxb6 Rxe6 25. Rxe6 axb6 26. d5 cxd5 27. f5 Re8 28. Rf2
Nc5 29. Rd6+ Kc7 30. Rxd5 Re1+ 31. Kd2 Rb1 32. Ke3 Rxb2 33. Rxb2 Bxb2 34. Kf3 Nd7
35. a4 Nf6 36. Rd2 Be5 37. g4 Ba1 38. Rd1 Bb2 39. Rb1 Bd4 40. Rh1 Ng8 41. Rc1+ Bc5
42. Re1 Nf6 43. Rh1 Bf8 44. Rd1 Bc5 45. Rf1 Bb4 46. Rh1 Bf8 47. Rc1+ Kd7 48. Re1
Bc5 49. Re6 Bd4 50. Re1 Bc5 51. Rh1 Bf8 52. Rd1+ Bd6  1/2-1/2

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.11"]
[Round "9"]
[Board "9"]
[White "Filgueiras, Nathan Felipe"]
[Black "Munoz Ramos, Christopher"]
[Result "1-0"]
[ECO "B81"]
[WhiteElo "2323"]
[BlackElo "2038"]
[PlyCount "105"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e6 7. g4 h6 8. Bg2 Be7
9. Be3 Nc6 10. Qd2 e5 11. Nde2 Be6 12. Ng3 h5 13. g5 Nd7 14. Nd5 Bxd5 15. exd5 Na5
16. b3 g6 17. Ne4 b6 18. f4 O-O 19. fxe5 Nxe5 20. O-O Nb7 21. Nf6+ Kg7 22. Bd4 Qc7
23. Rae1 Rac8 24. Rf2 Rh8 25. Qf4 Rcf8 26. Rxe5 dxe5 27. Bxe5 Qc8 28. d6 Nxd6 29.
Ne8+ Kh7 30. Nxd6 Qe6 31. c4 f6 32. gxf6 Bxd6 33. Bxd6 Rd8 34. Be5 Rd1+ 35. Kh2 Re1
36. Bc3 Re3 37. Bd2 Re8 38. Bxe3 Qf7 39. Bd5 Qf8 40. f7 Rd8 41. Qh6+ Qxh6 42. Bxh6
Kxh6 43. f8=Q+ Rxf8 44. Rxf8 Kg7 45. Rb8 Kh6 46. Rxb6 a5 47. c5 a4 48. c6 axb3 49.
axb3 h4 50. c7 Kh7 51. c8=Q g5 52. Qc7+ Kh8 53. Rb8#  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.11"]
[Round "9"]
[Board "10"]
[White "Varillas Jimenez, Ivan"]
[Black "Ribeiro, Matheus Mendes Domingues"]
[Result "1/2-1/2"]
[ECO "C15"]
[WhiteElo "1985"]
[BlackElo "2150"]
[PlyCount "40"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Nge2 dxe4 5. a3 Bxc3+ 6. Nxc3 Nc6 7. d5 exd5 8. Qxd5
Be6 9. Qxe4 Nf6 10. Qa4 Qd4 11. Bb5 Qxa4 12. Bxa4 O-O-O 13. Bxc6 bxc6 14. Be3 Ng4
15. Nd1 f5 16. Bg5 Rd7 17. h3 Nf6 18. O-O Ne4 19. Be3 Rhd8 20. Rc1 a5  1/2-1/2

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.11"]
[Round "9"]
[Board "11"]
[White "Reyes Zavaleta, Cristhian Yamil"]
[Black "Casalaspro, Mathias Andre"]
[Result "1-0"]
[ECO "E94"]
[WhiteElo "1804"]
[BlackElo "2060"]
[PlyCount "107"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 Nbd7 7. O-O e5 8. dxe5
dxe5 9. b4 c6 10. c5 Re8 11. Qb3 Qc7 12. a4 Nf8 13. b5 Ne6 14. Qb4 Bf8 15. a5 Nxc5
16. Qb1 Ne6 17. Be3 c5 18. Bc4 Nd4 19. Ng5 Be6 20. Nxe6 fxe6 21. b6 Qd8 22. Na4 $11
a6 23. f3 Kh8 24. Qa2 Qd7 25. Rfc1 Rac8 26. Bf1 Rc6 27. Rc4 Rec8 28. Nb2 Qf7 29.
Nd3 Nd7 30. Rac1 Bd6 31. Be2 Qf8 32. Bd1 Nxb6 33. axb6 Rxb6 34. Qf2 Rbc6 35. f4 Qg7
36. Nxe5 Bxe5 37. fxe5 Qxe5 38. Rxd4 Qg7 39. Rdc4 b6 40. Bg4 Rf8 41. Qe2 e5 42. Rf1
h5 43. Rxf8+ Qxf8 44. Bf3 b5 45. Rc1 c4 46. Rf1 Rf6 47. Qb2 Qe8 48. Bg5 Rd6 49. Be2
Kg7 50. Qc1 Qd7 51. Qe3 Re6 52. Qg3 Qd4+ 53. Kh1 c3 54. Qf3  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.11"]
[Round "9"]
[Board "12"]
[White "Tomiello, Mateus Costamilan"]
[Black "Nascimento, Luiz Eduardo Da Trindade"]
[Result "1-0"]
[ECO "A29"]
[WhiteElo "2145"]
[BlackElo "1877"]
[PlyCount "41"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bc5 5. Bg2 d6 6. O-O O-O 7. d3 a6 8. a3 Be6
9. b4 Ba7 10. Rb1 Ne7 11. Bg5 Ng6 12. Ne4 b5 13. Qc2 Rc8 14. h4 Bg4 15. Nh2 Bf5 16.
h5 Bxe4 17. Bxe4 Ne7 18. Bxf6 gxf6 19. Qd2 c6 20. Ng4 f5 21. Qh6  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.11"]
[Round "9"]
[Board "13"]
[White "Lima, Carlos Eduardo I De Araujo"]
[Black "Seccafim, Caic Dos Santos"]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "1857"]
[BlackElo "2062"]
[PlyCount "101"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 O-O 6. Nf3 c5 7. d5 b5 8. cxb5 a6 9.
a4 axb5 10. Bxb5 Ba6 11. Bg5 h6 12. Be3 Qa5 13. O-O Nbd7 14. Qd3 Rfb8 15. Rfb1 Ne8
16. Kh2 Kh7 17. Nd2 Bxb5 18. Nxb5 Nc7 19. Nc4 Ne5 20. Nxe5 Bxe5+ 21. f4 Bg7 22. Bd2
Qb6 23. Nxc7 Qxc7 24. Ra2 c4 25. Qc2 Qc5 26. Ra3 Ra6 27. a5 e6 28. dxe6 fxe6 29.
e5 d5 30. Rg3 Qe7 31. Qxg6+ Kh8 32. Re1 Rxb2 33. f5 exf5 34. Qxa6 Rxd2 35. Qa8+ Qf8
36. Qxf8+ Bxf8 37. Rb1 f4 38. Rg4 h5 39. Rxf4 Bh6 40. Rf7 Bg7 41. Rb8+ Kh7 42. Rbb7
c3 43. Rxg7+ Kh6 44. Rbc7 c2 45. Rgd7 d4 46. h4 Kg6 47. a6 Kf5 48. a7 c1=Q 49. Rxc1
Ra2 50. Rc8 d3 51. a8=Q  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.11"]
[Round "9"]
[Board "14"]
[White "Errazola, Mauricio"]
[Black "Nascimento, Nicolas Daniel Trindade"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "1725"]
[BlackElo "1797"]
[PlyCount "84"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Nbd7 6. e3 Be7 7. Bd3 c6 8. Nge2
O-O 9. O-O h6 10. Bh4 Re8 11. f3 c5 12. Bf2 cxd4 13. Nxd4 Ne5 14. Bc2 Nc4 15. Rb1
Bb4 16. Qd3 Ne5 17. Qe2 a6 18. Bb3 Bc5 19. Na4 Ba7 20. Rbc1 Neg4 21. Qd3 Nxf2 22.
Rxf2 Bd7 23. Nc5 Qe7 24. Nxd7 Qxd7 25. Rfc2 Qd6 26. Rc7 Qe5 27. Nf5 b5 28. R1c2 Bxe3+
29. Nxe3 Qxe3+ 30. Qxe3 Rxe3 31. Rd2 Rd8 32. Kf2 Re6 33. g4 g5 34. Re2 Rdd6 35. Rec2
Nd7 36. Rc8+ Kg7 37. Rd8 Ne5 38. Rcc8 Nd3+ 39. Kg3 Rxd8 40. Rxd8 Nf4 41. Bd1 Re1
42. Bb3 Re2  0-1

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.11"]
[Round "9"]
[Board "15"]
[White "Cahuapaza Tarapaca, Leonardo"]
[Black "Reyes Zavaleta, Sergio Gabriel"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "1818"]
[BlackElo "1287"]
[PlyCount "73"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. d4 d5 2. Bf4 Nf6 3. e3 Bf5 4. c4 c6 5. Nc3 e6 6. Qb3 Qc8 7. h3 Nbd7 8. Nf3 Ne4
9. Rc1 Nxc3 10. bxc3 a5 11. a4 Be7 12. Be2 O-O 13. O-O b6 14. cxd5 exd5 15. c4 dxc4
16. Bxc4 Qb7 17. Rfe1 Bb4 18. Re2 Nf6 19. Ne5 b5 20. Bd3 Be6 21. Qb1 bxa4 22. Nxc6
Bd5 23. Rec2 Bxc6 24. Rxc6 Rac8 25. Rc7 Rxc7 26. Rxc7 Qb6 27. Qa2 Bd6 28. Bxd6 Qxd6
29. Rc5 Rb8 30. Qxa4 Qe6 31. Rxa5 Qc8 32. Rc5 Qd8 33. e4 Ra8 34. Qc4 Ra1+ 35. Kh2
Ra8 36. g3 g6 37. Rc7  1-0

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.11"]
[Round "9"]
[Board "16"]
[White "Da Fonseca Pinto, Joao Gabriel Alves"]
[Black "Andriska, Matheus Jose Amante"]
[Result "1/2-1/2"]
[ECO "C66"]
[WhiteElo "1762"]
[BlackElo "1261"]
[PlyCount "90"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 Bd7 5. O-O Nf6 6. Re1 a6 7. Bxc6 Bxc6 8. dxe5
dxe5 9. Qxd8+ Rxd8 10. Nxe5 Bb5 11. a4 Bd7 12. Nxd7 Rxd7 13. Bg5 Be7 14. Nc3 O-O
15. Rad1 Rfd8 16. Rxd7 Rxd7 17. f3 h6 18. Bxf6 Bxf6 19. Rd1 Rxd1+ 20. Nxd1 Kf8 21.
Kf2 Ke7 22. Ke3 c5 23. Kd3 Kd6 24. Ne3 Kc6 25. b3 a5 26. Nd5 Bd4 27. Ne7+ Kd7 28.
Nf5 Be5 29. Kc4 Kc6 30. h3 h5 31. g4 g6 32. Ne7+ Kd7 33. Nd5 Kc6 34. gxh5 gxh5 35.
Ne7+ Kd7 36. Nf5 Kc6 37. Nh6 f6 38. Nf5 Bf4 39. Ng7 h4 40. Nf5 Bg5 41. Ne7+ Kd7 42.
Nd5 Kc6 43. Ne7+ Kd7 44. Nf5 Kc6 45. Kd3 Kd7  1/2-1/2

[Event "U20 Pan-American Chess Championship Open 2023"]
[Site "Sede Social CFCSN - Rua Gen. Oswaldo P. da Veiga, 231 - 3º Andar - Volta Redonda"]
[Date "2023.11.11"]
[Round "9"]
[Board "17"]
[White "De Mattos, Pedro Benedito Flores"]
[Black "Nascimento, Kaio Vinicius Da Trindade"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "0"]
[BlackElo "1310"]
[PlyCount "54"]
[EventDate "2023.11.06"]
[EventRounds "9"]
[EventCountry "BRA"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nf6 7. O-O Be7 8. h3 O-O
9. Bf4 Nbd7 10. Re1 Re8 11. Nbd2 Nf8 12. c3 Ne6 13. Bh2 c6 14. Qc2 h6 15. Re2 Nf8
16. Rae1 Be6 17. Ne5 Bd6 18. Ndf3 Ne4 19. Bxe4 dxe4 20. Qxe4 Bxa2 21. Qc2 Be6 22.
Re3 Qc7 23. Nd3 Bxh2+ 24. Nxh2 Red8 25. Nf3 Ng6 26. Nde5 Nf4 27. c4 Qc8  0-1

