[Event "Caribbean-ch U16"]
[Site "San Salvador"]
[Date "2021.11.27"]
[Round "6"]
[White "Dubon, Mario Andres"]
[Black "Nunez Okubo, Isao"]
[Result "1/2-1/2"]
[ECO "A36"]
[WhiteElo "1256"]
[BlackElo "1745"]
[PlyCount "114"]
[EventDate "2021.11.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]
[WhiteTeam "El Salvador"]
[BlackTeam "Costa Rica"]
[WhiteTeamCountry "ESA"]
[BlackTeamCountry "CRI"]

1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 Nf6 6. e4 0-0 7. Nge2 d6 8. 0-0 e5 9. f4 Rb8 10. f5 a6 11. a4 Nd4 12. Nxd4 cxd4 13. Nd5 Nxd5 14. cxd5 b6 15. b4 Bd7 16. Bd2 Rc8 17. Rc1 Rxc1 18. Bxc1 Qe7 19. Bh3 f6 20. Rf2 Rc8 21. g4 g5 22. Bf1 h6 23. Ra2 Kf7 24. Bd2 h5 25. gxh5 Bh6 26. Be2 Kg7 27. Bg4 Kh7 28. Qb3 Qe8 29. Kf1 Rc7 30. Ke1 Bf8 31. h3 Kh6 32. h4 Be7 33. hxg5+ fxg5 34. Qd1 Bf6 35. Kf2 Qc8 36. Kg3 Be8 37. Kf2 Bf7 38. Kg3 Qe8 39. Qh1 Bg8 40. Qd1 Bf7 41. Qh1 Re7 42. Bf3 Kh7 43. Ra3 Rc7 44. Ra2 g4 45. Bd1 Qd8 46. Rc2 Rxc2 47. Bxc2 Bg5 48. Bxg5 Qxg5 49. Qf1 Qe3+ 50. Kxg4 Kh6 51. Bd1 Be8 52. Kh4 Qg5+ 53. Kh3 Bxh5 54. Bxh5 Qxh5+ 55. Kg3 Qg5+ 56. Kh3 Qh5+ 57. Kg3 Qg5+ 1/2-1/2

[Event "Caribbean-ch U16"]
[Site "San Salvador"]
[Date "2021.11.27"]
[Round "5"]
[White "Nunez Okubo, Isao"]
[Black "Gonzalez Torres, Raquel Sofia"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "1745"]
[BlackElo "1024"]
[PlyCount "63"]
[EventDate "2021.11.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]
[WhiteTeam "Costa Rica"]
[BlackTeam "Costa Rica"]
[WhiteTeamCountry "CRI"]
[BlackTeamCountry "CRI"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Bb6 6. Bc4 Ne5 7. Be2 Nf6 8. f4 Nc6 9. Nxc6 bxc6 10. Bxb6 cxb6 11. Nc3 0-0 12. 0-0 d5 13. exd5 cxd5 14. Nb5 Re8 15. Nd4 Ne4 16. Bg4 Ba6 17. Rf3 Nf6 18. Bf5 Nh5 19. g4 Nxf4 20. Rxf4 Qh4 21. Nf3 Qd8 22. Bd3 b5 23. Qf1 f6 24. Nd4 Rb8 25. Qh3 h6 26. Raf1 Re5 27. Kg2 Qd6 28. Nf5 Qb6 29. Nxh6+ gxh6 30. Rxf6 Qa5 31. Rg6+ Kh8 32. Qxh6# 1-0

[Event "Caribbean-ch U16"]
[Site "San Salvador"]
[Date "2021.11.27"]
[Round "8"]
[White "Nunez Okubo, Isao"]
[Black "Villalta, Camilo1"]
[Result "0-1"]
[ECO "B31"]
[WhiteElo "1745"]
[BlackElo "1631"]
[PlyCount "55"]
[EventDate "2021.11.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]
[WhiteTeam "Costa Rica"]
[BlackTeam "El Salvador"]
[WhiteTeamCountry "CRI"]
[BlackTeamCountry "ESA"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. c3 Nf6 5. d4 cxd4 6. cxd4 Qa5+ 7. Nc3 Nxe4 8. Bxc6 bxc6 9. 0-0 Nxc3 10. bxc3 Bg7 11. Re1 e6 12. Bf4 0-0 13. Bd6 Re8 14. c4 Bf8 15. Re5 Qa6 16. Bxf8 Rxf8 17. Qd2 f6 18. Re4 d5 19. Rh4 Rb8 20. Qh6 Rf7 21. cxd5 Qxa2 22. Rc1 cxd5 23. Ne1 Ba6 24. Rh3 Qe2 25. Nc2 Rc7 26. Qf4 Qxc2 27. Rc3 Qxc3 28. Rxc3 0-1

[Event "Caribbean-ch U16"]
[Site "San Salvador"]
[Date "2021.11.27"]
[Round "4"]
[White "Rodriguez, Yanci Andrea"]
[Black "Nunez Okubo, Isao"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "1254"]
[BlackElo "1745"]
[PlyCount "48"]
[EventDate "2021.11.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]
[WhiteTeam "El Salvador"]
[BlackTeam "Costa Rica"]
[WhiteTeamCountry "ESA"]
[BlackTeamCountry "CRI"]

1. d4 Nf6 2. e3 c5 3. Bd3 g6 4. Nf3 Bg7 5. b3 0-0 6. Bb2 Nc6 7. a3 d6 8. Nbd2 cxd4 9. exd4 e5 10. 0-0 Re8 11. Re1 Bg4 12. c3 Bxf3 13. Qxf3 d5 14. Qh3 Nh5 15. dxe5 Nxe5 16. Bf1 f5 17. Rad1 Qb6 18. Kh1 Ng4 19. Qf3 Nxf2+ 20. Kg1 Nxd1+ 21. Kh1 Rxe1 22. h3 Nf2+ 23. Kh2 Be5+ 24. g3 Bxg3+ 0-1

[Event "World Cup U16 Prel"]
[Site "Tornelo INT"]
[Date "2021.08.16"]
[Round "6"]
[White "Dafa, Sirio"]
[Black "Nunez Okubo, Isao"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1068"]
[BlackElo "1745"]
[PlyCount "144"]
[EventDate "2021.08.16"]
[EventType "swiss (rapid)"]
[EventRounds "10"]
[EventCountry "NET"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 Nc6 6. cxd4 g6 7. Nc3 Nxc3 8. bxc3 Bg7 9. h4 d6 10. exd6 Qxd6 11. a4 Bg4 12. Ba3 Qe6+ 13. Qe2 0-0 14. Qxe6 Bxe6 15. Bd3 Na5 16. h5 Bd5 17. hxg6 hxg6 18. Ke2 Rfe8 19. Bb5 Bc4+ 20. Bxc4 Nxc4 21. Kd3 Rac8 22. Rhe1 e5 23. dxe5 Nxe5+ 24. Nxe5 Bxe5 25. Rac1 Red8+ 26. Ke4 Bxc3 27. Re3 Re8+ 28. Kf3 Ba5 29. Rxc8 Rxc8 30. Bb2 Bb4 31. Re4 Bc3 32. Ba3 Bf6 33. Be7 Bg7 34. Rb4 b6 35. Ke4 Re8 36. Kd5 Rxe7 37. Kc6 Kf8 38. Rb3 Ke8 39. Rd3 Be5 40. Rh3 Kd8 41. f4 Bxf4 42. Rh8+ Re8 43. Rh7 Ke7 44. Rh4 Bg5 45. Re4+ Kd8 46. Rd4+ Kc8 47. Rg4 Re6+ 48. Kd5 Be7 49. Rc4+ Kd7 50. Rf4 Rf6 51. Re4 Rf5+ 52. Kc4 Bd6 53. Rd4 Rf4 54. Rxf4 Bxf4 55. g4 f5 56. gxf5 gxf5 57. Kd5 Bd6 58. a5 f4 59. axb6 axb6 60. Ke4 b5 61. Kd3 Kc6 62. Ke4 Kc5 63. Kd3 Kd5 64. Kc3 Ke4 65. Kd2 f3 66. Ke1 b4 67. Kd1 b3 68. Kc1 Be5 69. Kb1 b2 70. Kc2 f2 71. Kd2 f1Q 72. Kc2 Qd3# 0-1

[Event "World Cup U16 Prel"]
[Site "Tornelo INT"]
[Date "2021.08.16"]
[Round "7"]
[White "Nunez Okubo, Isao"]
[Black "Bazyrtsyrenov, Kirill"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "1745"]
[BlackElo "2191"]
[PlyCount "69"]
[EventDate "2021.08.16"]
[EventType "swiss (rapid)"]
[EventRounds "10"]
[EventCountry "NET"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 4. 0-0 Bd7 5. c3 Nf6 6. Re1 a6 7. Bxc6 Bxc6 8. d3 e6 9. Bg5 Be7 10. Na3 0-0 11. Rc1 h6 12. Bxf6 Bxf6 13. d4 d5 14. e5 Be7 15. Nc2 b5 16. dxc5 Bxc5 17. Ncd4 Rc8 18. Nxc6 Rxc6 19. Nd4 Rc8 20. Qd2 Qb6 21. Rcd1 b4 22. Re3 bxc3 23. bxc3 Bxd4 24. cxd4 Rc4 25. Rg3 Kh7 26. Rb3 Qc6 27. Rdb1 Rc8 28. h3 Rc1+ 29. Kh2 Rxb1 30. Qd3+ g6 31. Rxb1 Qc2 32. Qxa6 Qxb1 33. Qxc8 Qxa2 34. Qf8 Qa7 35. h4 1/2-1/2

[Event "World Cup U16 Prel"]
[Site "Tornelo INT"]
[Date "2021.08.16"]
[Round "5"]
[White "Nunez Okubo, Isao"]
[Black "Guerra Ramirez, Jorge"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "1745"]
[PlyCount "70"]
[EventDate "2021.08.16"]
[EventType "swiss (rapid)"]
[EventRounds "10"]
[EventCountry "NET"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 4. 0-0 Bg4 5. c3 Qb6 6. Bxc6+ Qxc6 7. Re1 Nf6 8. d4 cxd4 9. cxd4 g6 10. Nc3 Bg7 11. h3 Bxf3 12. Qxf3 0-0 13. Be3 e5 14. d5 Qd7 15. Rac1 Nh5 16. Qe2 Rfc8 17. Nb5 Nf4 18. Bxf4 exf4 19. Nc3 Re8 20. Qd2 f3 21. g4 h5 22. Qf4 hxg4 23. hxg4 Bh6 24. g5 Qh3 25. Qg3 Qxg3+ 26. fxg3 Bxg5 27. Rc2 Rac8 28. Kf2 b5 29. a3 a5 30. b4 axb4 31. axb4 Rc4 32. Ra1 Rec8 33. Ra3 Bf6 34. Kxf3 Rxc3+ 35. Rcxc3 Rxc3+ 0-1

[Event "World Cup U16 Prel"]
[Site "Tornelo INT"]
[Date "2021.08.16"]
[Round "10"]
[White "Nunez Okubo, Isao"]
[Black "Laohawirapap, Prin"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "1745"]
[BlackElo "2125"]
[PlyCount "94"]
[EventDate "2021.08.16"]
[EventType "swiss (rapid)"]
[EventRounds "10"]
[EventCountry "NET"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h5 5. Bd3 Bxd3 6. Qxd3 e6 7. Nf3 Qa5+ 8. Bd2 Qa6 9. Qxa6 Nxa6 10. 0-0 Ne7 11. Bg5 c5 12. c3 Nf5 13. Nbd2 Rc8 14. Rac1 Be7 15. Bxe7 Kxe7 16. Nb3 Rc7 17. dxc5 Nxc5 18. Nxc5 Rxc5 19. Rcd1 Rhc8 20. g3 Rc4 21. Rd2 Re4 22. Rfd1 Nh6 23. Rd4 Ng4 24. Rxe4 dxe4 25. Ng5 Rc4 26. Rd4 Nxe5 27. Nxe4 Rxd4 28. cxd4 Nf3+ 29. Kf1 Nxd4 30. Ke1 b6 31. Kd2 e5 32. Nc3 Ke6 33. Ke3 f6 34. b3 Nf5+ 35. Kd3 Nd6 36. Nd1 g5 37. Ne3 Nf5 38. Nxf5 Kxf5 39. Kc4 gxh4 40. gxh4 Ke4 41. Kb5 Kf3 42. Ka6 Kxf2 43. Kxa7 e4 44. Kxb6 e3 45. a4 e2 46. a5 e1Q 47. a6 Qb4+ 0-1

[Event "World Cup U16 Prel"]
[Site "Tornelo INT"]
[Date "2021.08.16"]
[Round "3"]
[White "Nunez Okubo, Isao"]
[Black "Liem, Godwin"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1745"]
[BlackElo "1664"]
[PlyCount "60"]
[EventDate "2021.08.16"]
[EventType "swiss (rapid)"]
[EventRounds "10"]
[EventCountry "NET"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. c4 Nb6 5. Nc3 e5 6. Be3 exd4 7. Bxd4 Nc6 8. Bxb6 axb6 9. Qxd8+ Nxd8 10. Nf3 Bb4 11. Kd2 0-0 12. Bd3 Ne6 13. a3 Bxc3+ 14. Kxc3 Nf4 15. Be4 c6 16. g3 Ne6 17. Rad1 Nc5 18. Bc2 Bg4 19. Nd4 Bxd1 20. Rxd1 Rad8 21. b4 Ne6 22. Nxe6 fxe6 23. Rxd8 Rxd8 24. f4 h6 25. Be4 Kf7 26. c5 bxc5 27. bxc5 Kf6 28. g4 e5 29. f5 Kg5 30. Kb4 Rd4+ 0-1

[Event "World Cup U16 Prel"]
[Site "Tornelo INT"]
[Date "2021.08.16"]
[Round "9"]
[White "Nunez Okubo, Isao"]
[Black "Malik, Jan Adiar"]
[Result "1-0"]
[ECO "B50"]
[WhiteElo "1745"]
[BlackElo "2201"]
[PlyCount "57"]
[EventDate "2021.08.16"]
[EventType "swiss (rapid)"]
[EventRounds "10"]
[EventCountry "NET"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Nc6 5. d4 cxd4 6. cxd4 e6 7. Nc3 Be7 8. 0-0 0-0 9. h3 a6 10. Be3 d5 11. e5 Ne4 12. Bd3 f5 13. exf6 Nxf6 14. Ne5 Nxe5 15. dxe5 Nd7 16. Qh5 g6 17. Bxg6 hxg6 18. Qxg6+ Kh8 19. Qh5+ Kg8 20. Bh6 Nxe5 21. Bxf8 Qxf8 22. Qxe5 Bf6 23. Qg3+ Bg7 24. Rfe1 Bd7 25. Re5 Qf6 26. Rg5 Rf8 27. Rg6 Qf7 28. Re1 d4 29. Ne4 1-0

[Event "World Cup U16 Prel"]
[Site "Tornelo INT"]
[Date "2021.08.16"]
[Round "1"]
[White "Nunez Okubo, Isao"]
[Black "Pranesh, Munirethinam"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "1745"]
[BlackElo "2437"]
[PlyCount "118"]
[EventDate "2021.08.16"]
[EventType "swiss (rapid)"]
[EventRounds "10"]
[EventCountry "NET"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. c3 Nc6 4. d4 cxd4 5. cxd4 d5 6. e5 Nge7 7. Bd3 Nf5 8. Bxf5 exf5 9. Nc3 Be6 10. Qb3 a6 11. a4 Be7 12. h4 h6 13. h5 0-0 14. Ne2 Na5 15. Qd1 Qb6 16. Nf4 Bb4+ 17. Kf1 Rfc8 18. Rh3 Bf8 19. Nh4 Rc4 20. Rd3 Rac8 21. b3 Rc2 22. Rb1 Ra2 23. Rg3 Kh7 24. Qd3 Qc6 25. Kg1 Qc2 26. Qxc2 Rcxc2 27. Nxe6 fxe6 28. Ng6 Bb4 29. Nf4 Rc6 30. Rg6 Rac2 31. Be3 b6 32. Nxe6 Kh8 33. Nf4 Rxg6 34. Nxg6+ Kh7 35. e6 Kg8 36. Bf4 Nc6 37. Rc1 Rxc1+ 38. Bxc1 Nxd4 39. Nf4 Nxb3 40. Bb2 d4 41. Kf1 Kf8 42. Ke2 Bd6 43. Ng6+ Ke8 44. Kd3 Nc5+ 45. Kxd4 Nxa4 46. Bc1 b5 47. Kd5 Bb4 48. Kc6 Nc5 49. Kd5 Nd3 50. f3 Nxc1 51. Ne5 a5 52. Nc6 Nd3 53. Kd4 Ne1 54. Kd5 Bd2 55. Kd6 a4 56. e7 Nd3 57. Nd8 Bb4+ 58. Ke6 Bxe7 59. Nc6 Bf6 0-1

[Event "World Cup U16 Prel"]
[Site "Tornelo INT"]
[Date "2021.08.16"]
[Round "8"]
[White "Schlegel, Igor"]
[Black "Nunez Okubo, Isao"]
[Result "1-0"]
[ECO "B35"]
[WhiteElo "2049"]
[BlackElo "1745"]
[PlyCount "47"]
[EventDate "2021.08.16"]
[EventType "swiss (rapid)"]
[EventRounds "10"]
[EventCountry "NET"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 a5 9. 0-0 a4 10. Nxa4 Nxe4 11. Nb5 d5 12. Bb6 Qd7 13. Qe2 Na5 14. Rad1 Nxb3 15. axb3 Qc6 16. Nc7 Rxa4 17. Nxd5 Kh8 18. bxa4 e6 19. Qxe4 exd5 20. Qb4 Re8 21. Rfe1 Be6 22. Qb5 Qc8 23. Rxd5 Qxc2 24. Qxe8+ 1-0

[Event "World Cup U16 Prel"]
[Site "Tornelo INT"]
[Date "2021.08.16"]
[Round "4"]
[White "Shah, Viraj Bhaveshu"]
[Black "Nunez Okubo, Isao"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1377"]
[BlackElo "1745"]
[PlyCount "58"]
[EventDate "2021.08.16"]
[EventType "swiss (rapid)"]
[EventRounds "10"]
[EventCountry "NET"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. Nf3 d5 5. e5 a6 6. g3 Nge7 7. Bg2 g6 8. 0-0 Bg7 9. a4 Rb8 10. Ne2 d4 11. d3 Nd5 12. h3 0-0 13. Kh2 b5 14. axb5 axb5 15. Bd2 Bd7 16. g4 Ra8 17. Rxa8 Qxa8 18. Ng3 Qa2 19. Bc1 Ncb4 20. Ne4 Rc8 21. Nh4 Ne3 22. Bxe3 dxe3 23. c3 Qxb2 24. Re1 Nd5 25. Nd6 Rb8 26. c4 Nxf4 27. Qf3 Bxe5 28. Qxe3 Bxd6 29. Kg1 g5 0-1

[Event "World Cup U16 Prel"]
[Site "Tornelo INT"]
[Date "2021.08.16"]
[Round "2"]
[White "Theocharous, Vassilis"]
[Black "Nunez Okubo, Isao"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "1356"]
[BlackElo "1745"]
[PlyCount "114"]
[EventDate "2021.08.16"]
[EventType "swiss (rapid)"]
[EventRounds "10"]
[EventCountry "NET"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. d3 Bg7 5. e4 d6 6. Nc3 e6 7. 0-0 Nge7 8. Ne1 0-0 9. f4 Rb8 10. a3 Nd4 11. Nf3 Nec6 12. Ne2 b5 13. c3 Nxe2+ 14. Qxe2 Na5 15. Qd1 d5 16. e5 c4 17. Nd4 Bd7 18. b4 cxb3 19. Nxb3 Nxb3 20. Qxb3 Qb6+ 21. d4 Rfc8 22. Bd2 Qc6 23. Rfb1 a5 24. Bf1 a4 25. Qc2 Bf8 26. Ra2 Be7 27. Bd3 Bd8 28. Rab2 Qa6 29. Qd1 Be7 30. Ra2 Qc6 31. Qe2 Qb7 32. Rba1 Rc7 33. Rc2 Rbc8 34. Rb2 Qa6 35. Bxb5 Bxb5 36. Qxb5 Qa7 37. Qd3 Rb7 38. Rxb7 Qxb7 39. Qb1 Rb8 40. Qxb7 Rxb7 41. Bc1 Rb3 42. Bd2 Rxa3 43. Rxa3 Bxa3 44. Kf2 Bb2 45. Ke3 a3 46. c4 a2 47. cxd5 a1Q 48. dxe6 Bxd4+ 49. Kd3 fxe6 50. Bb4 Qb2 51. Bd6 Bg1 52. Kc4 Bxh2 53. Kc5 Qc2+ 54. Kb6 Kf7 55. Bc5 Ke8 56. Kc6 Qa4+ 57. Kd6 Qd7# 0-1

[Event "Pan American-ch Amateur U2000"]
[Site "San Jose"]
[Date "2019.10.23"]
[Round "2.6"]
[White "Del Giudice, Juan Eduardo"]
[Black "Nunez Okubo, Isao"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "1991"]
[BlackElo "1608"]
[PlyCount "52"]
[EventDate "2019.10.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRI"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. 0-0 Bg7 5. d3 d6 6. e4 e5 7. c3 Nge7 8. a3 0-0 9. b4 b6 10. Bb2 a6 11. Qc2 h6 12. Rd1 Bg4 13. h3 Bxf3 14. Bxf3 Rc8 15. Qe2 f5 16. Nd2 f4 17. Nb3 Qe8 18. g4 Qf7 19. Qc2 Nd4 20. Nxd4 exd4 21. c4 Nc6 22. e5 Qe7 23. exd6 Qxd6 24. bxc5 Qxc5 25. Re1 Ne5 26. Bd5+ Qxd5 0-1

[Event "Pan American-ch Amateur U2000"]
[Site "San Jose"]
[Date "2019.10.23"]
[Round "1.19"]
[White "Nunez Okubo, Isao"]
[Black "Castillo Pena, Patricia Evarista"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "1608"]
[BlackElo "1807"]
[PlyCount "77"]
[EventDate "2019.10.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRI"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e5 7. Nb3 Be6 8. Be3 Nbd7 9. Qd2 b5 10. g4 Nb6 11. g5 Nfd7 12. Nd5 Nxd5 13. exd5 Bf5 14. Bd3 Bxd3 15. Qxd3 Be7 16. h4 Nb6 17. Na5 Qc7 18. Nc6 Rc8 19. Bxb6 Qxb6 20. 0-0-0 Qc7 21. f4 0-0 22. fxe5 dxe5 23. Qe4 Bd6 24. Rhf1 a5 25. Rf5 Rce8 26. Rdf1 a4 27. c3 a3 28. b4 Qb6 29. h5 g6 30. Rf6 Qc7 31. Kc2 Kg7 32. Rxd6 Qxd6 33. Rf6 Qd7 34. h6+ Kg8 35. d6 Re6 36. Ne7+ Kh8 37. Qf3 Qxd6 38. Rxf7 Rxf7 39. Qa8+ 1-0

[Event "Pan American-ch Amateur U2000"]
[Site "San Jose"]
[Date "2019.10.??"]
[Round "4"]
[White "Bonilla, Pablo"]
[Black "Nunez Okubo, Isao"]
[Result "0-1"]
[ECO "B31"]
[BlackElo "1608"]
[PlyCount "64"]
[EventDate "2019.10.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRI"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. 0-0 Bg7 6. d3 e5 7. Be3 b6 8. Qd2 h6 9. Nc3 Nf6 10. Nxe5 Nxe4 11. Nxe4 Bxe5 12. Rae1 Be6 13. Bf4 Bxf4 14. Qxf4 Qb8 15. Qh4 Kd7 16. d4 g5 17. Qh5 cxd4 18. Rd1 Qf4 19. Rxd4+ Kc7 20. Qd1 Rad8 21. Re1 Rxd4 22. Qxd4 Rd8 23. Qa4 Kb7 24. Nc5+ bxc5 25. Qa5 Rd5 26. a3 Rf5 27. f3 Qd4+ 28. Kh1 Qf2 29. Qc3 g4 30. Qe3 Qxe3 31. Rxe3 gxf3 32. gxf3 Kc7 0-1

[Event "Pan American-ch Amateur U2000"]
[Site "San Jose"]
[Date "2019.10.??"]
[Round "7"]
[White "Calvo Campos, Adrian"]
[Black "Nunez Okubo, Isao"]
[Result "1/2-1/2"]
[ECO "B37"]
[WhiteElo "1702"]
[BlackElo "1608"]
[PlyCount "70"]
[EventDate "2019.10.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRI"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Nc2 Nf6 7. Nc3 d6 8. Be2 0-0 9. 0-0 Nd7 10. Bd2 a5 11. Qc1 Nc5 12. Bh6 Be6 13. Bxg7 Kxg7 14. f4 f5 15. exf5 Bxf5 16. Ne3 Nd4 17. Nxf5+ gxf5 18. Bh5 e6 19. Qd2 e5 20. Rae1 Nc6 21. fxe5 dxe5 22. Nd5 Ne4 23. Qe3 Qg5 24. Qxg5+ Nxg5 25. h4 Ne6 26. g4 f4 27. g5 Ned4 28. Re4 Nf5 29. Nc7 Ng3 30. Bf3 Rad8 31. Ne6+ Kf7 32. Nxd8+ Rxd8 33. Ree1 Nxf1 34. Bd5+ Ke7 35. Kxf1 Kd6 1/2-1/2

[Event "Pan American-ch Amateur U2000"]
[Site "San Jose"]
[Date "2019.10.??"]
[Round "6"]
[White "Hernandez Luna, Jose Angel"]
[Black "Nunez Okubo, Isao"]
[Result "1-0"]
[ECO "B39"]
[WhiteElo "1819"]
[BlackElo "1608"]
[PlyCount "69"]
[EventDate "2019.10.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRI"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 Ng4 8. Qxg4 Nxd4 9. Qd1 Ne6 10. Qd2 Qa5 11. Rc1 b6 12. Be2 Bb7 13. f3 g5 14. 0-0 Be5 15. b3 Rg8 16. Rfd1 d6 17. Nd5 Qxd2 18. Rxd2 Rc8 19. Rdd1 Nf4 20. Bf1 Kd7 21. g3 Bb2 22. Rb1 Nxd5 23. exd5 Be5 24. a4 f5 25. Bd4 e6 26. dxe6+ Kxe6 27. Kf2 Rc7 28. Re1 Kf6 29. Rbd1 Bxd4+ 30. Rxd4 Rd7 31. b4 Bc6 32. a5 d5 33. Red1 Rgd8 34. b5 dxc4 35. bxc6 1-0

[Event "Pan American-ch Amateur U2000"]
[Site "San Jose"]
[Date "2019.10.??"]
[Round "5"]
[White "Nunez Okubo, Isao"]
[Black "Aoyama, Edmundo"]
[Result "0-1"]
[ECO "B76"]
[WhiteElo "1608"]
[BlackElo "1828"]
[PlyCount "82"]
[EventDate "2019.10.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRI"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 d6 7. f3 a6 8. Qd2 Bg7 9. 0-0-0 0-0 10. g4 Qc7 11. h4 h5 12. gxh5 Nxh5 13. Nd5 Qd8 14. Nb3 Be6 15. Nb6 Rb8 16. c3 Ne5 17. Qf2 Qc7 18. Kb1 Nc4 19. Bxc4 Bxc4 20. Bd4 Bxd4 21. Qxd4 Be2 22. Rdg1 Bxf3 23. Rh3 Bxe4+ 24. Qxe4 Qxb6 25. Nd4 e5 26. Qg4 Kh7 27. Nf3 Qf2 28. Ng5+ Kg8 29. Rf3 Qe2 30. Ne6 Rfe8 31. Nc7 e4 32. Qxh5 Qxf3 33. Rxg6+ fxg6 34. Qxg6+ Kf8 35. Qh6+ Kf7 36. Qh7+ Kf6 37. Qh6+ Ke5 38. Qg5+ Qf5 39. Qg7+ Kf4 40. Qg2 Rg8 41. Qf2+ Kg4 0-1

[Event "Pan American-ch Amateur U2000"]
[Site "San Jose"]
[Date "2019.10.??"]
[Round "3"]
[White "Nunez Okubo, Isao"]
[Black "Cordoba Rodriguez, Milton Dennis"]
[Result "1-0"]
[ECO "C05"]
[WhiteElo "1608"]
[BlackElo "1906"]
[PlyCount "71"]
[EventDate "2019.10.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRI"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. f4 c5 6. c3 Nc6 7. Ndf3 Qc7 8. a3 g6 9. b4 cxd4 10. cxd4 Bg7 11. Ne2 Nb6 12. g4 h5 13. gxh5 Rxh5 14. Ng3 Rh8 15. Ra2 Nc4 16. h4 a5 17. b5 Ne7 18. a4 Bd7 19. h5 Nf5 20. Nxf5 gxf5 21. Rg2 Bh6 22. Ng5 Rc8 23. Rc2 Qd8 24. Bxc4 dxc4 25. Qf3 Rc7 26. Qe2 c3 27. Rh3 Qe7 28. Rcxc3 Qb4 29. Qb2 Rxc3 30. Qxc3 Qxa4 31. Qc7 Qa1 32. Nxf7 Bxf4 33. Nxh8 Bxc1 34. Qb8+ Ke7 35. Ng6+ Kf7 36. Qf8# 1-0

[Event "Pan American-ch U14"]
[Site "Guayaquil"]
[Date "2019.07.27"]
[Round "9"]
[White "Gu, Andy Jiuding"]
[Black "Nunez Okubo, Isao"]
[Result "0-1"]
[ECO "B39"]
[WhiteElo "1338"]
[BlackElo "1653"]
[PlyCount "86"]
[EventDate "2019.07.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 Ng4 8. Nxc6 Nxe3 9. Nxd8 Nxd1 10. Nxd1 Kxd8 11. Rc1 d6 12. Nc3 b6 13. Be2 Bb7 14. f3 Kd7 15. Kf2 Bd4+ 16. Kg3 g5 17. Rc2 h5 18. h3 h4+ 19. Kg4 Kc6 20. f4 gxf4 21. Kxf4 e5+ 22. Kf3 Rhg8 23. Bf1 Rg3+ 24. Ke2 Bxc3 25. Rxc3 Rxc3 26. bxc3 Rg8 27. g4 hxg3 28. Kf3 Kd7 29. Rg1 f5 30. Bd3 f4 31. a3 Ke7 32. Bf1 Bc6 33. Bd3 Be8 34. Kg2 Bh5 35. h4 Bg4 36. Rf1 Bh5 37. Rg1 f3+ 38. Kh3 g2 39. Kh2 Rg4 40. Kh3 Kd8 41. c5 bxc5 42. a4 a5 43. Bc4 Rxe4 0-1

[Event "Pan American-ch U14"]
[Site "Guayaquil"]
[Date "2019.07.25"]
[Round "7"]
[White "Reyes Zavaleta, Fabian Ricardo"]
[Black "Nunez Okubo, Isao"]
[Result "1-0"]
[ECO "A59"]
[WhiteElo "1457"]
[BlackElo "1653"]
[PlyCount "59"]
[EventDate "2019.07.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bxa6 7. e4 Bxf1 8. Kxf1 d6 9. g3 Bg7 10. Nf3 Nbd7 11. Kg2 0-0 12. a4 Qb6 13. Qe2 Rfb8 14. Bd2 Ne8 15. Rhb1 Nc7 16. Bg5 f6 17. Bf4 Ra7 18. Nd2 Rab7 19. Nc4 Qa6 20. Nb5 Ra8 21. Nxc7 Rxc7 22. Qc2 Rb7 23. h3 Rb4 24. b3 Rab8 25. Na3 Rc8 26. Nc4 Ra8 27. Bd2 Nb6 28. Bxb4 cxb4 29. Nxb6 Qxb6 30. Qc6 1-0

[Event "Pan American-ch U14"]
[Site "Guayaquil"]
[Date "2019.07.22"]
[Round "2"]
[White "Nunez Okubo, Isao"]
[Black "Shubin, Daniel"]
[Result "0-1"]
[ECO "C15"]
[WhiteElo "1653"]
[BlackElo "1960"]
[PlyCount "50"]
[EventDate "2019.07.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Bd2 dxe4 5. Qg4 Nf6 6. Qh4 Nc6 7. Bb5 Bxc3 8. bxc3 Qd5 9. c4 Qxd4 10. Rd1 Bd7 11. Ne2 Qc5 12. Bg5 0-0-0 13. 0-0 a6 14. Bxc6 Bxc6 15. Ng3 Qe5 16. Rxd8+ Rxd8 17. Nh5 h6 18. Bxf6 gxf6 19. Nxf6 e3 20. fxe3 Qxe3+ 21. Kh1 Rd2 22. Nd5 exd5 23. a4 Kb8 24. Qd8+ Ka7 25. Qxc7 dxc4 0-1

[Event "Pan American-ch U12"]
[Site "San Jose"]
[Date "2017.07.03"]
[Round "5"]
[White "Nunez Okubo, Isao"]
[Black "Alvarado Zamora, Albert"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "1372"]
[BlackElo "1683"]
[PlyCount "92"]
[EventDate "2017.07.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRI"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. f4 Nc6 4. Nf3 a6 5. Be2 Nf6 6. 0-0 e5 7. f5 Be7 8. d3 Bd7 9. h3 Qc7 10. Bg5 0-0-0 11. Bxf6 Bxf6 12. Nd5 Qa5 13. Nd2 b5 14. Nb3 Qc7 15. Nxc7 Kxc7 16. a4 Bg5 17. axb5 axb5 18. c3 Rb8 19. Qc2 Rhc8 20. Ra2 f6 21. Rfa1 Kd8 22. Na5 Ne7 23. g4 Be8 24. Nb3 Nc6 25. Nd2 Bf7 26. b3 Ke7 27. Nf3 Bf4 28. h4 h6 29. h5 Kf8 30. Nh4 Be3+ 31. Kg2 Bg5 32. Kg3 Bf4+ 33. Kh3 Ke8 34. Ng6 Bg5 35. Bd1 Be3 36. Kg3 b4 37. c4 Bxg6 38. fxg6 Bd4 39. Rb1 Kd7 40. Qe2 Ra8 41. Qg2 Ke7 42. Re2 Nd8 43. Re1 Ne6 44. Rf1 Ra3 45. Qh3 Ng5 46. Qg2 Rca8 1/2-1/2

[Event "Pan American-ch U12"]
[Site "San Jose"]
[Date "2017.07.03"]
[Round "4"]
[White "Trakru, Rohun"]
[Black "Nunez Okubo, Isao"]
[Result "1/2-1/2"]
[ECO "A57"]
[WhiteElo "1758"]
[BlackElo "1372"]
[PlyCount "90"]
[EventDate "2017.07.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRI"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Qc2 bxc4 5. e4 d6 6. Bxc4 g6 7. Nf3 Bg7 8. Nc3 0-0 9. 0-0 Ba6 10. Be2 Bxe2 11. Qxe2 Nbd7 12. Bf4 Ng4 13. Bg3 Rb8 14. Rab1 Qa5 15. h3 Nge5 16. Nd2 f6 17. f4 Nf7 18. Nc4 Qc7 19. Rfe1 Nb6 20. Nd2 Nd7 21. Nf3 Qa5 22. a3 Rfc8 23. Qc2 Rb7 24. Ne2 Rcb8 25. Nd2 Nb6 26. f5 g5 27. b4 cxb4 28. axb4 Qa4 29. Qd3 Nd7 30. Nc3 Nfe5 31. Qe2 Qa3 32. Rb3 Qxb3 33. Nxb3 Rxb4 34. Na5 Rb2 35. Qf1 Bh6 36. Bxe5 Nxe5 37. Nc6 R8b3 38. Nxe5 fxe5 39. Qc4 Rb8 40. g4 R2b4 41. Qc6 Rb3 42. Rc1 Bg7 43. Qd7 Bf6 44. Qe6+ Kg7 45. Nd1 Rb1 1/2-1/2

[Event "Pan American-ch U12"]
[Site "San Jose"]
[Date "2017.07.02"]
[Round "3"]
[White "Nunez Okubo, Isao"]
[Black "Ballesteros Cardenas, Leonardo"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1372"]
[BlackElo "1595"]
[PlyCount "89"]
[EventDate "2017.07.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRI"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. f4 d5 4. e5 Nc6 5. Nf3 Nge7 6. Be2 d4 7. Ne4 Nd5 8. d3 Be7 9. 0-0 h6 10. Qe1 Bd7 11. a3 Qc7 12. Qf2 0-0-0 13. c4 Nb6 14. Bd2 a5 15. Rfb1 a4 16. b4 axb3 17. Rxb3 Na8 18. Qe1 Be8 19. a4 Kd7 20. a5 Rb8 21. Rb5 Na7 22. Rb3 Nc6 23. Qb1 Kc8 24. Qa2 Kd7 25. Rab1 f6 26. exf6 gxf6 27. Qa3 Na7 28. Qb2 Kc8 29. Be1 Bc6 30. Bg3 Bxe4 31. dxe4 Rd8 32. Bd3 Rg8 33. e5 f5 34. Bh4 Bxh4 35. Nxh4 Nc6 36. Ra3 Nb4 37. Qd2 Qe7 38. Qf2 Nc7 39. Nf3 Nca6 40. Ne1 Kc7 41. Qf3 Rg4 42. Rab3 Rbg8 43. Bf1 R8g7 44. Nd3 Kc8 45. Nf2 1-0

[Event "Pan American-ch U12"]
[Site "San Jose"]
[Date "2017.07.02"]
[Round "2"]
[White "Velasquez Cristancho, Juan Pablo"]
[Black "Nunez Okubo, Isao"]
[Result "1/2-1/2"]
[ECO "B72"]
[WhiteElo "1701"]
[BlackElo "1372"]
[PlyCount "45"]
[EventDate "2017.07.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRI"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. 0-0 d6 9. h3 Bd7 10. Bb3 Nxd4 11. Bxd4 b5 12. Re1 a6 13. a3 Rb8 14. Nd5 Nxd5 15. Bxd5 Bxd4 16. Qxd4 Qb6 17. Rad1 Qxd4 18. Rxd4 Rfc8 19. c3 Be6 20. e5 Bxd5 21. Rxd5 Rc5 22. Rdd1 dxe5 23. Re2 1/2-1/2

[Event "Pan American-ch U12"]
[Site "San Jose"]
[Date "2017.07.01"]
[Round "1"]
[White "Nunez Okubo, Isao"]
[Black "Morales Cascante, Luis Diego"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "1372"]
[PlyCount "49"]
[EventDate "2017.07.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRI"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nxd4 5. Qxd4 d6 6. Nc3 c6 7. Bc4 Bd7 8. 0-0 Be7 9. Qxg7 Be6 10. Bxe6 fxe6 11. Qxh8 Kd7 12. Rd1 e5 13. Qxe5 Qc7 14. Bg5 Bxg5 15. Qxg5 Rf8 16. Qg7+ Ne7 17. Qxf8 Qb6 18. e5 d5 19. e6+ Kd6 20. Qf4+ Kxe6 21. Re1+ Kd7 22. Rxe7+ Kxe7 23. Re1+ Kd7 24. Qf7+ Kd6 25. Qe7# 1-0

