[Event "Wch U16"]
[White "Ko, Yu Cheng"]
[Black "Bosquez Leguisamo, Joel Alexander"]
[Site "Florianopolis"]
[Round "9"]
[Result "0-1"]
[Date "2024.11.07"]
[ECO "B50"]
[BlackElo "1751"]
[PlyCount "178"]
[EventDate "2024.10.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB45_2024"]
[Source "ChessBase"]
[SourceDate "2024.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Nc6 5. d4 cxd4 6. cxd4 e6 7. 0-0 Be7 8. Nc3 0-0 9. Bf4 d5 10. e5 Ne4 11. Bd3 f5 12. exf6 Nxf6 13. Re1 Nh5 14. Be5 Nxe5 15. Rxe5 Nf4 16. Ne2 Nxd3 17. Qxd3 Bd6 18. Re3 Qb6 19. b3 Bd7 20. Ne5 Bb5 21. Qd1 Rac8 22. Nf3 Bd7 23. h3 Rf7 24. Ne5 Bxe5 25. Rxe5 Rcf8 26. Qe1 Rf6 27. Rd1 Qd6 28. Ng3 Qa3 29. Rd2 Rc8 30. Nf1 Rc1 31. Rd1 Rxd1 32. Qxd1 Qxa2 33. Re2 Qa3 34. Rc2 Bc6 35. Rc3 Qb2 36. Qc2 Qxc2 37. Rxc2 Kf7 38. g3 Ke7 39. Nd2 Kd6 40. f4 Rf7 41. Nf3 Rc7 42. Kf2 a6 43. Ne5 Be8 44. Rxc7 Kxc7 45. Ke3 Kb6 46. Kd3 Ka5 47. Kc3 Kb5 48. h4 a5 49. g4 a4 50. bxa4+ Kxa4 51. Nd3 b6 52. Nb4 Ka3 53. Nd3 h5 54. g5 Bg6 55. Nb4 Bf5 56. Nc6 b5 57. Nb4 Ka4 58. Nc6 Be4 59. Nb4 Ka5 60. Nc6+ Kb6 61. Ne5 Ka5 62. Nc6+ Ka4 63. Nb4 Ka3 64. Nc6 Bf3 65. Nb4 Be2 66. Nc6 g6 67. Nb4 Bc4 68. Nc6 Bf1 69. Nb4 Be2 70. Nc6 Ka2 71. Ne5 Ka3 72. Nc6 Bg4 73. Nb4 Bf5 74. Nc6 Ka2 75. Nd8 Kb1 76. Kb4 Kc2 77. Kxb5 Kd3 78. Kc5 Ke4 79. Kd6 Kxd4 80. Nxe6+ Ke4 81. Nc5+ Kxf4 82. Kxd5 Kg4 83. Ke5 Kxh4 84. Kf4 Kh3 85. Kf3 Bg4+ 86. Kf2 Kh4 87. Ne4 Bf5 88. Ng3 Kxg5 89. Nxf5 Kxf5 0-1

[Event "Wch U16"]
[White "Lazzarotti, Calebe Kadlubiski"]
[Black "Ko, Yu Cheng"]
[Site "Florianopolis"]
[Round "8"]
[Result "1-0"]
[Date "2024.11.06"]
[ECO "A01"]
[WhiteElo "1850"]
[PlyCount "61"]
[EventDate "2024.10.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB45_2024"]
[Source "ChessBase"]
[SourceDate "2024.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.06"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 d5 4. Bb5 Nge7 5. Bxe5 a6 6. Bxc6+ Nxc6 7. Bg3 h5 8. h4 d4 9. Ne2 Bf5 10. 0-0 Bd6 11. exd4 Bxg3 12. Nxg3 Qxd4 13. c3 Qf6 14. Nxf5 Qxf5 15. Re1+ Kf8 16. d4 Rh6 17. Nd2 Ne7 18. Re5 Qd3 19. Re3 Qf5 20. Nf3 Nd5 21. Re5 Qd7 22. Qd2 f6 23. Re4 Rg6 24. Kh1 f5 25. Ne5 Qd6 26. Nxg6+ Qxg6 27. Re5 Rd8 28. Rae1 Nf6 29. Qg5 Qxg5 30. hxg5 Ne4 31. Rxf5+ 1-0

[Event "Wch U16"]
[White "Ko, Yu Cheng"]
[Black "Simiyu, Baraka Daniel"]
[Site "Florianopolis"]
[Round "7"]
[Result "1-0"]
[Date "2024.11.05"]
[ECO "B15"]
[BlackElo "1565"]
[PlyCount "47"]
[EventDate "2024.10.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB45_2024"]
[Source "ChessBase"]
[SourceDate "2024.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.06"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Nf3 Bd6 7. Bd3 0-0 8. 0-0 Re8 9. Re1 Rxe1+ 10. Qxe1 Bg4 11. Qe4 f5 12. Qe3 Nd7 13. Ne5 Nxe5 14. dxe5 Bc7 15. h3 Bh5 16. Bd2 Bg6 17. Re1 Bb6 18. Qf4 Qd7 19. Bc3 Re8 20. Bc4 Bc7 21. Qe3 Bb6 22. e6 Qd8 23. exf7+ Kf8 24. Qxe8+ 1-0

[Event "Wch U16"]
[White "Ricouz Vasquez, Enzo Joaquin"]
[Black "Ko, Yu Cheng"]
[Site "Florianopolis"]
[Round "6"]
[Result "1-0"]
[Date "2024.11.03"]
[ECO "C00"]
[WhiteElo "1855"]
[PlyCount "81"]
[EventDate "2024.10.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB45_2024"]
[Source "ChessBase"]
[SourceDate "2024.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.06"]
[SourceQuality "1"]

1. e4 c5 2. d3 e6 3. g3 d5 4. Nd2 Nf6 5. Bg2 Nc6 6. Ngf3 Be7 7. 0-0 0-0 8. Re1 b6 9. e5 Nd7 10. Nf1 Bb7 11. h4 Re8 12. Bf4 f6 13. exf6 Bxf6 14. c3 Rc8 15. Ng5 Nf8 16. Qg4 e5 17. Bd2 Ba6 18. c4 Nd4 19. Bxd5+ Nfe6 20. Nxe6 Nxe6 21. Bxe6+ Kh8 22. Bd5 Rc7 23. Be4 Bb7 24. Rad1 Bxe4 25. dxe4 Qd4 26. b3 Qb2 27. Ra1 Rd8 28. Be3 Rcd7 29. Qe2 Qxe2 30. Rxe2 Rd1 31. Rxd1 Rxd1 32. Rd2 Rxd2 33. Bxd2 Kg8 34. Ne3 Bd8 35. Bc3 Bc7 36. Ng4 Kf7 37. Bxe5 Bxe5 38. Nxe5+ Ke6 39. f4 h6 40. h5 Kd6 41. Kf2 1-0

[Event "Wch U16"]
[White "Ko, Yu Cheng"]
[Black "Navarro Canete, Facundo Javier"]
[Site "Florianopolis"]
[Round "5"]
[Result "1/2-1/2"]
[Date "2024.11.02"]
[ECO "B38"]
[BlackElo "1836"]
[PlyCount "63"]
[EventDate "2024.10.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB45_2024"]
[Source "ChessBase"]
[SourceDate "2024.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Qb6 7. Nb3 Qd8 8. Qc2 Nf6 9. Nc3 0-0 10. h3 d6 11. Be2 Be6 12. 0-0 Rc8 13. Nd2 Nd7 14. Nd5 Nd4 15. Bxd4 Bxd4 16. Nf3 Bg7 17. Rac1 Nb6 18. b3 Nxd5 19. exd5 Bxd5 20. Qd2 Bc6 21. Nd4 Bd7 22. Bf3 Qb6 23. Rcd1 Rfe8 24. Rfe1 a5 25. Qe3 a4 26. Nc2 Qa6 27. Nb4 Qa5 28. Nd5 axb3 29. axb3 b5 30. Nb6 Bh6 31. Qd4 Bg7 32. Qe3 1/2-1/2

[Event "Wch U16"]
[White "Ko, Yu Cheng"]
[Black "De Souza Silva, Naua"]
[Site "Florianopolis"]
[Round "4"]
[Result "1-0"]
[Date "2024.11.01"]
[ECO "B15"]
[BlackElo "1629"]
[PlyCount "89"]
[EventDate "2024.10.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB45_2024"]
[Source "ChessBase"]
[SourceDate "2024.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.06"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. c3 Bd6 7. Nf3 0-0 8. Be2 Qc7 9. 0-0 Bg4 10. h3 Bh5 11. Re1 Re8 12. Be3 Bf4 13. Bxf4 Qxf4 14. Qb3 Qc7 15. Bc4 Nd7 16. Nd2 Nb6 17. Bd3 Re7 18. Qc2 Bg6 19. Bxg6 hxg6 20. Rxe7 Qxe7 21. Qe4 Qxe4 22. Nxe4 Re8 23. Re1 Kf8 24. Kf1 Nd5 25. Nc5 Rxe1+ 26. Kxe1 b6 27. Nd3 Ke7 28. g3 Kd6 29. Ke2 Nc7 30. Ke3 g5 31. Ke4 g6 32. g4 Ke6 33. Nb4 f5+ 34. Ke3 Nd5+ 35. Nxd5 Kxd5 36. b3 fxg4 37. hxg4 b5 38. Kd3 f5 39. f3 a5 40. c4+ bxc4+ 41. bxc4+ Kd6 42. Kc3 Kc7 43. Kb3 Kb6 44. Ka4 Ka6 45. c5 1-0

[Event "Wch U16"]
[White "De Oliveira, Lucas Silva"]
[Black "Ko, Yu Cheng"]
[Site "Florianopolis"]
[Round "3"]
[Result "1-0"]
[Date "2024.10.31"]
[ECO "B45"]
[WhiteElo "1743"]
[PlyCount "71"]
[EventDate "2024.10.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB45_2024"]
[Source "ChessBase"]
[SourceDate "2024.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Bc5 6. Nxc6 bxc6 7. Bd3 Nf6 8. 0-0 0-0 9. Bg5 h6 10. Bh4 e5 11. Kh1 Be7 12. Qe2 Nh7 13. Bxe7 Qxe7 14. f4 Re8 15. fxe5 Qxe5 16. Rf5 Qe7 17. Raf1 Nf6 18. Rxf6 gxf6 19. Qg4+ Kf8 20. Qh4 Qe5 21. Qxh6+ Ke7 22. Rf5 Qd6 23. e5 Qe6 24. Qh4 Kd8 25. Rxf6 Qe7 26. Ne4 Kc7 27. Nd6 Rf8 28. Qd4 Bb7 29. Qc5 Qd8 30. Qb4 Bc8 31. Rf4 a5 32. Qc5 Ba6 33. Qxa5+ Kb8 34. Rb4+ Bb5 35. Rxb5+ cxb5 36. Qxb5+ 1-0

[Event "Wch U16"]
[White "Ko, Yu Cheng"]
[Black "Wang, Yu Sr"]
[Site "Florianopolis"]
[Round "2"]
[Result "0-1"]
[Date "2024.10.30"]
[ECO "E92"]
[BlackElo "1856"]
[PlyCount "79"]
[EventDate "2024.10.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB45_2024"]
[Source "ChessBase"]
[SourceDate "2024.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.06"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. c4 d6 4. Nc3 Nf6 5. Nf3 0-0 6. Be2 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Bg5 Re8 10. Bxf6 Bxf6 11. Nd5 Bd8 12. 0-0 c6 13. Nb4 a5 14. Nd3 Bc7 15. h3 f5 16. Nd2 Nd7 17. Rfe1 Nf8 18. Rac1 Ne6 19. Bf1 Nd4 20. Nb3 fxe4 21. Rxe4 Bf5 22. Ree1 Nxb3 23. axb3 e4 24. Nc5 b6 25. Na4 h5 26. g3 Rad8 27. Re2 e3 28. Rce1 b5 29. Nc3 Bb6 30. fxe3 Bd3 31. Rd2 Rxe3 32. Rxe3 Bxe3+ 33. Rf2 Bxf2+ 34. Kxf2 Bxf1 35. Kxf1 b4 36. Ne4 Rd3 37. Ke2 Rxb3 38. Nd2 Rxb2 39. Kd3 a4 40. g4 0-1

[Event "Wch U16"]
[White "Sauer, Tim"]
[Black "Ko, Yu Cheng"]
[Site "Florianopolis"]
[Round "1"]
[Result "1-0"]
[Date "2024.10.29"]
[ECO "A39"]
[WhiteElo "2081"]
[PlyCount "65"]
[EventDate "2024.10.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB45_2024"]
[Source "ChessBase"]
[SourceDate "2024.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.06"]
[SourceQuality "1"]

1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nc6 5. Nf3 d6 6. 0-0 Nf6 7. d4 cxd4 8. Nxd4 Nxd4 9. Qxd4 0-0 10. Qd3 a6 11. Bd2 Rb8 12. a4 Qc7 13. b3 Be6 14. Ra2 Rfe8 15. Rc1 Qd7 16. e4 Rec8 17. Rac2 Qd8 18. Nd5 Bxd5 19. cxd5 Rxc2 20. Qxc2 Ne8 21. Qc4 Qd7 22. a5 Bb2 23. Rc2 Ba3 24. Be3 Bc5 25. Bxc5 Rc8 26. b4 Qa4 27. Ra2 Qd1+ 28. Bf1 dxc5 29. bxc5 Nd6 30. Qb4 Nb5 31. Kg2 Nd4 32. Qd2 Qf3+ 33. Kg1 1-0

