CANBASE
Player / Joueur
De Costa, Benjamin
40 games / 40 parties
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2024.05.16
Scarborough CC-ch
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| 204709 | Kola, Venkat Karthikeya (1885) | De Costa, Benjamin (1739) | 1-0 | |
| 1. d4 c6 2. c4 e6 3. e4 d5 4. cxd5 cxd5 5. e5 Nc6 6. Nf3 Bb4+ 7. Nc3 Nge7 8. Bd3 Bd7 9. O-O Rc8 10. Ne2 Ng6 11. g3 Qb6 12. h4 1-0 | ||||
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2024.02.22
Scarborough CC Winter Swiss
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| 40117 | De Costa, Benjamin (1744) | Chamberland, Luc (1724) | 1-0 | |
| 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bf4 O-O 6. e3 c5 7. Rc1 Qa5 8. Bxb8 Rxb8 9. Qa4 Qxa4 10. Nxa4 cxd4 11. Nxd4 e5 12. Nf3 Re8 13. cxd5 Nxd5 14. Bc4 Nb4 15. Bb5 Rd8 16. a3 Nd3+ 17. Bxd3 Rxd3 18. Ke2 Rd8 19. Rhd1 Bd7 20. Nc3 Bc6 21. e4 f5 22. Ng5 Re8 23. f3 h6 24. Nh3 Rbd8 25. Nf2 Kf7 26. b4 a6 27. a4 Ke6 28. b5 axb5 29. axb5 Bd7 30. Rd5 Bf8 31. Na4 Bc8 32. Nb6 Bd7 33. Rc7 Bd6 34. Rxb7 Re7 35. Nc4 Bb4 36. Nd3 Bc3 37. Nc5+ Kf6 38. Rd6+ Kg5 39. Rbxd7 Rexd7 40. Ne6+ Kf6 41. Nxd8+ Rxd6 42. Nxd6 Ke7 43. N8f7 Ke6 44. b6 Ba5 45. b7 Bc7 46. Kd3 f4 47. Kc4 h5 48. Kc5 g5 49. Kc6 Bb8 50. Nd8+ Ke7 51. N6f7 g4 52. Kd5 gxf3 53. gxf3 Bc7 54. Nc6+ Kxf7 55. b8=Q Bxb8 56. Nxb8 1-0 | ||||
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2024.02.01
Scarborough CC Winter Swiss
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| 40099 | Gao, Heye (1872) | De Costa, Benjamin (1744) | 1-0 | |
| 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. Bf4 Bg4 7. Qb3 Qd7 8. Nd2 e6 9. Ngf3 Bd6 10. Ne5 Qc7 11. Nxg4 Bxf4 12. Nxf6+ gxf6 13. Nf3 Rg8 14. g3 Bh6 15. Bxh7 Rg7 16. Bd3 Rd8 17. Qd1 e5 18. Qe2 Kf8 19. dxe5 Nxe5 20. Nxe5 Re8 21. O-O fxe5 22. Rfe1 e4 23. Rad1 Re6 24. Bc2 e3 25. Bb3 Qb6 26. fxe3 Rxe3 27. Qf2 Bf4 28. Kh1 Rxe1+ 29. Qxe1 Bc7 30. Rxd5 Qf6 31. Kg2 Bb6 32. Qf1 Qe7 33. Rf5 Ke8 34. Qb5+ Kd8 35. Qd5+ Kc8 36. Re5 Qf6 37. Re8+ Bd8 38. Ba4 Rg5 39. Qd7+ 1-0 | ||||
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2024.01.11
Scarborough CC Jack Frost
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| 40406 | De Costa, Benjamin (1702) | Chamberland, Luc (1777) | 1-0 | |
| 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. e3 O-O 6. cxd5 Nxd5 7. Bc4 Nxc3 8. bxc3 c5 9. Ba3 cxd4 10. cxd4 Bg4 11. O-O Nc6 12. h3 Bd7 13. Re1 Bf6 14. Ne5 Nxe5 15. dxe5 Bg7 16. Qb3 b5 17. Bd5 Rc8 18. Rad1 e6 19. Bxf8 Bxf8 20. Bb7 Rc7 21. Ba6 Qb8 22. a4 Qb6 23. Bxb5 Bxb5 24. Qxb5 Rc3 25. Qxb6 axb6 26. Rc1 Ra3 27. Ra1 Rc3 28. a5 bxa5 29. Rxa5 Rc5 30. Rxc5 Bxc5 31. Rc1 1-0 | ||||
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2023.12.07
Scarborough CC Jack Frost
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| 40388 | Bossy, John (1866) | De Costa, Benjamin (1702) | 0-1 | |
| 1. d4 c6 2. c4 e6 3. Nf3 d5 4. Nc3 f5 5. g3 Nf6 6. Bg2 Be7 7. O-O Nbd7 8. Qc2 O-O 9. cxd5 exd5 10. Qxf5 Ne4 11. Qe6+ Kh8 12. Nxd5 cxd5 13. Qxd5 Ndf6 14. Qxd8 Rxd8 15. Bf4 Be6 16. Rac1 Rac8 17. a3 Ng4 18. Rxc8 Rxc8 19. Ne5 Ngxf2 20. Rxf2 Nxf2 21. Kxf2 Rc2 22. d5 Bg8 23. Nd3 b6 24. d6 Bd8 25. Be5 Bc4 26. Ke3 Bg5+ 27. Bf4 Bf6 28. d7 Bxd3 29. Kxd3 Rxb2 30. Bc7 Rb3+ 31. Ke4 Rb2 32. d8=Q+ Bxd8 33. Bxd8 Rxe2+ 34. Kf3 Ra2 35. Be7 Kg8 36. h4 Kf7 37. Bb4 a5 38. Bf1 axb4 39. Bc4+ Kf6 40. Bxa2 bxa3 41. Kf4 h5 42. g4 hxg4 43. Kxg4 b5 44. Bb3 b4 45. Ba2 Ke5 46. Kg5 Kd4 47. Kg6 Kc3 48. Kxg7 b3 0-1 | ||||
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2023.10.19
Scarborough CC Ridout mem. Swiss
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| 40779 | De Costa, Benjamin (1618) | Bossy, John (1946) | 1/2-1/2 | |
| 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Bg5 Be7 5. Nc3 O-O 6. e3 h6 7. Bh4 b6 8. cxd5 exd5 9. Ne5 Be6 10. Bb5 c5 11. Bc6 Nxc6 12. Nxc6 Qc7 13. Nxe7+ Qxe7 14. dxc5 bxc5 15. Nxd5 Bxd5 16. Bxf6 Qxf6 17. Qxd5 Qxb2 18. O-O Qa3 19. Rfc1 Rac8 20. Qb3 Qb4 21. Rc4 Qxb3 22. axb3 Rb8 23. Rc3 Rb7 24. Rxc5 Rxb3 25. Rca5 Rfb8 26. Kf1 Rb1+ 27. Rxb1 Rxb1+ 28. Ke2 Rb7 29. Ra2 h5 1/2-1/2 | ||||
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2023.09.28
Scarborough CC Ridout mem. Swiss
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| 40760 | De Costa, Benjamin (1618) | Lawless, David (1932) | 1/2-1/2 | |
| 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. f3 d6 6. Be3 Nc6 7. Qd2 a6 8. Nge2 Rb8 9. Nc1 e5 10. d5 Nd4 11. Nb3 c5 12. dxc6 bxc6 13. Nxd4 exd4 14. Bxd4 d5 15. cxd5 cxd5 16. e5 Re8 17. Be2 Nd7 18. f4 f6 19. exf6 Nxf6 20. O-O Ne4 21. Nxe4 dxe4 22. Rfd1 Qxd4+ 23. Qxd4 Bxd4+ 24. Rxd4 Rxb2 25. Bc4+ Kg7 26. Re1 Bf5 27. Bxa6 1/2-1/2 | ||||
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2023.09.21
Scarborough CC Ridout mem. Swiss
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| 40758 | De Costa, Benjamin (1618) | Ajith, Aarush (1679) | 1-0 | |
| 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Bg5 b6 5. e3 Bb7 6. cxd5 exd5 7. Bd3 Nbd7 8. Ne5 Be7 9. Bb5 O-O 10. Nc6 Bxc6 11. Bxc6 Rb8 12. Nc3 Ne8 13. Bxe7 Qxe7 14. Bxd5 Nef6 15. Bf3 Rfe8 16. O-O a6 17. Bc6 Qd6 18. Qf3 Re6 19. Rac1 b5 20. Nd5 Nxd5 21. Qxd5 Nf6 22. Qxd6 cxd6 23. Bf3 h6 24. Rc6 a5 25. d5 Re5 26. Rxd6 a4 27. Rd1 Kf8 28. Rc6 Ke8 29. d6 Kd7 30. Rc7+ Ke6 31. Re7+ Kf5 32. g4+ Nxg4 33. Bxg4+ Kf6 34. Rxe5 Kxe5 35. f4+ Ke4 36. Kf2 1-0 | ||||
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2023.07.09
CAN-ch U20 U1800
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| 41094 | Deepak, Laksshana (1665) | De Costa, Benjamin (1492) | 1-0 | |
| 1. e4 c6 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 Nf6 5. Qe2 Nxe4 6. Qxe4 Qd5 7. Qe3 Bf5 8. d3 g6 9. Be2 Bg7 10. O-O e6 11. c4 Qd8 12. d4 O-O 13. b3 Qc7 14. Nh4 c5 15. Bb2 Nc6 16. g4 Bxd4 17. Bxd4 cxd4 18. Qd2 Qe7 19. Ng2 e5 20. gxf5 gxf5 21. Qh6 Qe6 22. Qh3 Kh8 23. Kh1 Rg8 24. Rg1 e4 25. Qh4 d3 26. Bh5 Ne5 27. Qf4 Ng4 28. Nh4 Qh6 29. Rxg4 Qxh5 30. Qe5+ f6 31. Qxf6+ Rg7 32. Qxg7# 1-0 | ||||
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2023.07.09
CAN-ch U20 U1800
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| 41084 | De Costa, Benjamin (1492) | Patil, Tanishq (1523) | 1/2-1/2 | |
| 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Bg5 Be7 5. Nc3 O-O 6. e3 b6 7. cxd5 Nxd5 8. Bxe7 Qxe7 9. Nxd5 exd5 10. Bd3 Bg4 11. O-O c5 12. dxc5 bxc5 13. h3 Be6 14. b3 Nd7 15. Rc1 Nf6 16. Qc2 Rac8 17. Ng5 h6 18. Nxe6 fxe6 19. Rfd1 Rfd8 20. e4 dxe4 21. Bxe4 Nxe4 22. Qxe4 Rxd1+ 23. Rxd1 Kf7 24. Rc1 Qd7 25. Qf4+ Kg8 26. Qc4 Qd5 27. b4 Qxc4 28. Rxc4 Kf7 29. Rxc5 Rxc5 30. bxc5 Ke7 31. Kf1 Kd7 32. Ke2 Kc6 33. Kd3 Kxc5 34. Kc3 Kb5 35. Kb3 g5 36. g4 e5 37. f3 a5 38. a4+ Kc5 39. Kc3 Kd5 40. Kd3 Kc5 41. Kc3 Kd5 42. Kd3 Kc5 43. Kc3 1/2-1/2 | ||||
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2023.07.08
CAN-ch U20 U1800
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| 41063 | Tseng, Bradley (1712) | De Costa, Benjamin (1492) | 1/2-1/2 | |
| 1. e4 c6 2. Nf3 d5 3. Nc3 Bg4 4. exd5 cxd5 5. h3 Bh5 6. g4 Bg6 7. Ne5 Nc6 8. d4 a6 9. h4 Nxe5 10. dxe5 d4 11. Ne2 Qa5+ 12. Qd2 Qxe5 13. Qxd4 Qxd4 14. Nxd4 e5 15. Nf5 O-O-O 16. Ne3 Bc5 17. Bg2 f6 18. Bd2 Ne7 19. O-O-O Bf7 20. Kb1 Rd7 21. Bc1 Rhd8 22. Rxd7 Rxd7 23. Be4 Bg6 24. Bg2 Bf7 1/2-1/2 | ||||
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2023.07.08
CAN-ch U20 U1800
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| 41075 | Tenkov, Arkadii (1697) | De Costa, Benjamin (1492) | 1/2-1/2 | |
| 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. h5 Bh7 8. c3 e6 9. Bd3 Bxd3 10. Qxd3 Nf6 11. Nf3 Bd6 12. Ne4 Nxe4 13. Qxe4 Nd7 14. Be3 Nf6 15. Qd3 Nd5 16. a3 Qb6 17. b4 a5 18. O-O axb4 19. axb4 O-O 20. Bd2 Bf4 21. Rfe1 Rfd8 22. Ne5 Rxa1 23. Rxa1 Bxe5 24. dxe5 Nxb4 25. Qe2 Nd3 26. Be3 Qb2 27. Qxb2 Nxb2 28. Ra7 Rd7 29. f4 Nd1 30. Bd4 c5 31. Bxc5 Nxc3 32. Kh2 Kh7 33. g3 Ne4 34. Bb4 f6 35. f5 Ng5 36. fxe6 Nxe6 37. exf6 gxf6 38. Bc3 Kg7 39. Kh3 Nd8 40. Kg4 Kf7 41. Kf5 Rd5+ 42. Ke4 Rxh5 43. Ba5 Re5+ 44. Kf3 Re8 45. Bxd8 Rxd8 46. Rxb7+ Kg6 47. Rb5 Rd3+ 48. Kf4 h5 49. Rc5 Rd4+ 50. Ke3 Ra4 51. Kf3 f5 52. Rc6+ Kg5 53. Rc3 Ra1 54. Rb3 Re1 55. Rb8 Re6 56. Rg8+ Rg6 57. Rc8 Kf6 58. Rh8 Rg5 59. Rh6+ Ke5 60. Rh8 Kf6 61. Rh6+ Kg7 62. Ra6 Rg6 63. Ra7+ Kh6 64. Ra5 Kg5 65. Ra8 Rh6 66. Rg8+ Kf6 67. Ra8 Rh7 68. Ra6+ Kg5 69. Ra8 h4 70. Rg8+ Kf6 71. gxh4 Rxh4 72. Rf8+ Kg6 73. Rg8+ Kf7 74. Ra8 Rb4 75. Ra7+ Kf6 76. Ra8 Rb1 77. Rf8+ Kg6 78. Rg8+ Kf7 79. Ra8 Rf1+ 80. Kg2 Rb1 81. Kf3 Rb4 82. Ra6 Ke7 83. Rc6 Rd4 84. Rb6 Rd6 85. Rxd6 Kxd6 86. Kf4 Ke6 87. Kf3 Ke5 88. Ke3 f4+ 89. Kf3 Kf5 90. Kf2 Kg4 91. Kg2 f3+ 92. Kf2 Kf4 93. Kf1 Kg3 94. Kg1 Kg4 95. Kf2 Kf4 1/2-1/2 | ||||
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2023.07.07
CAN-ch U20 U1800
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| 41043 | De Costa, Benjamin (1492) | Qian, Ashley (1688) | 0-1 | |
| 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Bg5 Be7 5. Nc3 h6 6. Bh4 O-O 7. e3 c6 8. c5 b6 9. b4 a5 10. a3 Ba6 11. Be2 Bxe2 12. Kxe2 Ne4 13. Bxe7 Nxc3+ 14. Kd3 Nxd1 15. Bxd8 Nxf2+ 16. Ke2 Nxh1 17. Bxb6 axb4 18. Rxh1 bxa3 19. Ne5 Re8 20. Ra1 f6 21. Nd3 Nd7 22. Bc7 e5 23. dxe5 Nxe5 24. Nxe5 fxe5 25. Kd3 e4+ 26. Kd4 Ra4+ 27. Kc3 Rea8 28. Kb3 Rc4 29. Bb6 Raa4 30. Bc7 g5 31. Be5 Rab4+ 32. Ka2 Rxc5 33. Kxa3 Rb6 34. Ka4 Rcb5 35. Bc3 Ra6+ 36. Ba5 Raxa5# 0-1 | ||||
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2023.07.07
CAN-ch U20 U1800
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| 41055 | De Costa, Benjamin (1492) | Huang, Ivan (1580) | 1-0 | |
| 1. d4 d5 2. c4 e6 3. Nf3 c6 4. Nc3 dxc4 5. Bg5 Be7 6. Bxe7 Qxe7 7. e3 Nf6 8. Bxc4 Nbd7 9. O-O e5 10. Qc2 O-O 11. Rfd1 exd4 12. Rxd4 Ne5 13. Be2 Ng6 14. Rad1 Be6 15. Ng5 Bd7 16. h3 Rad8 17. Nge4 Bf5 18. Rxd8 Rxd8 19. Nxf6+ Qxf6 20. Rxd8+ Qxd8 21. Qxf5 Qc7 22. Bc4 a6 23. Ne4 Ne5 24. Bb3 c5 25. f4 Ng6 26. Bxf7+ Qxf7 27. Qxf7+ Kxf7 28. Nd6+ Ke6 29. Nxb7 Kd5 30. Kf2 c4 31. Ke2 Nf8 32. b3 Ne6 33. Na5 cxb3 34. axb3 Ke4 35. Nb7 h6 36. g4 g6 37. b4 Kd5 38. Nc5 Nc7 39. Kd3 a5 40. e4+ Kc6 41. Kc4 axb4 42. Kxb4 Nb5 43. Nd3 Nd6 44. Nf2 Nb5 45. Kc4 Nc7 46. Nd3 Kd6 47. Nc5 Ne8 48. e5+ Kc6 49. Ne6 g5 50. fxg5 hxg5 51. Nxg5 Ng7 52. h4 Kd7 53. h5 Ke7 54. h6 Ke8 1-0 | ||||
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2023.07.06
CAN-ch U20 U1800
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| 41027 | De Costa, Benjamin (1492) | Chen, Shuang (1640) | 1-0 | |
| 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Bg5 Be7 5. Nc3 Nbd7 6. c5 c6 7. Qc2 O-O 8. e3 b6 9. b4 a5 10. Na4 axb4 11. Bd3 h6 12. Bxf6 Bxf6 13. cxb6 Nxb6 14. Nc5 Nd7 15. O-O Qa5 16. Rac1 Nxc5 17. Qxc5 Qxc5 18. Rxc5 b3 19. Rxc6 Rxa2 20. Rb1 Bd7 21. Rb6 Ba4 22. Bb5 Rc8 23. Bxa4 b2 24. Rc6 Rxc6 25. Bxc6 Ra1 26. Nd2 e5 27. Bxd5 exd4 28. Be4 dxe3 29. fxe3 Kf8 30. Kf2 Ke7 31. Nc4 Kd7 32. Ke2 Rxb1 33. Bxb1 Kc6 34. Kd3 Kc5 35. e4 Kb4 36. e5 Bg5 37. Nxb2 Bf4 38. Ke4 Bxh2 39. Nd3+ Kc3 40. Ba2 f5+ 41. Ke3 g5 42. e6 Bd6 43. Ne5 Bc5+ 44. Kf3 h5 45. Ng6 h4 46. e7 g4+ 47. Kf4 Bd6+ 48. Kxf5 Bxe7 49. Nxe7 h3 50. g3 Kd4 51. Kxg4 h2 52. Bd5 Ke5 53. Bg2 Ke6 54. Nf5 Kf6 55. Ne3 Kg6 56. Nf1 Kh6 57. Nxh2 Kh7 58. Kg5 Kh8 59. Kg6 Kg8 60. g4 Kh8 61. g5 Kg8 62. Nf1 Kf8 63. Kh7 Ke8 64. g6 Ke7 65. g7 Kf6 66. g8=Q Kf5 67. Qg6+ Kf4 68. Qe4+ Kg5 69. Ne3 Kf6 70. Qf5+ Ke7 71. Qg6 Kd7 72. Bh3+ Kd8 73. Qd6+ Ke8 74. Bd7+ Kf7 75. Qe6+ Kf8 76. Qe8# 1-0 | ||||
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2023.07.06
CAN-ch U20 U1800
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| 41033 | Ossine, Nicholas (1744) | De Costa, Benjamin (1492) | 0-1 | |
| 1. d4 d5 2. c4 e6 3. Nc3 f5 4. Bf4 c6 5. Nf3 Bd6 6. Bxd6 Qxd6 7. e3 Nd7 8. Be2 Ngf6 9. O-O O-O 10. Qc2 Ne4 11. Rab1 Rf6 12. b4 Rh6 13. c5 Qc7 14. b5 Ng5 15. g3 Ne4 16. Bd3 e5 17. Nxe5 Nxe5 18. dxe5 Qxe5 19. Ne2 g5 20. bxc6 bxc6 21. Bxe4 fxe4 22. Nd4 Ba6 23. Rfd1 Bd3 24. Rxd3 exd3 25. Qxd3 Rf6 26. Rb7 Qe4 27. Qxe4 dxe4 28. Rc7 Raf8 29. Nxc6 Rxf2 30. Ne7+ Kh8 31. g4 Rxa2 32. Nf5 Rb8 33. Ng3 Rb1+ 34. Nf1 Raa1 35. Rf7 Rc1 36. Rf5 h6 37. Kg2 Rc2+ 38. Kg3 Rac1 39. h4 Rxc5 40. Rf2 a5 41. hxg5 hxg5 42. Nd2 R5c2 43. Nb3 Rxf2 44. Kxf2 Rc2+ 45. Kg3 a4 46. Nd4 Rc3 47. Nb5 Rxe3+ 48. Kf2 Rf3+ 49. Kg2 a3 50. Nxa3 Rxa3 51. Kf2 Rf3+ 52. Ke2 Rf4 53. Ke3 Rxg4 54. Kf2 Rf4+ 55. Ke3 Rf8 56. Kxe4 g4 57. Ke3 g3 58. Ke4 g2 59. Kd5 g1=Q 60. Ke5 Qe3+ 61. Kd6 Rf6+ 62. Kd7 Qa7+ 63. Ke8 Kg8 64. Kd8 Rf8# 0-1 | ||||
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2019.08.20
Naycc U14
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| 20393 | Albury, Noah (1508) | De Costa, Benjamin (1332) | 0-1 | |
| 1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. Nf3 a6 5. Be2 Qc7 6. d3 d6 7. O-O Be7 8. Qe1 Nd4 9. Bd1 Bf6 10. Nxd4 cxd4 11. Ne2 Ne7 12. Qg3 O-O 13. Bd2 g6 14. c3 dxc3 15. Nxc3 Qb6+ 16. Qe3 Bd4 17. Qxd4 Qxd4+ 18. Kh1 Qxd3 19. Be1 Qxf1# 0-1 | ||||
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2019.08.19
Naycc U14
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| 20360 | Ran, Charles (1619) | De Costa, Benjamin (1332) | 1-0 | |
| 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Bd3 Nf6 7. O-O Nc6 8. Nf3 d6 9. Re1 Be7 10. Bf4 e5 11. Be3 O-O 12. h3 b5 13. Nh2 Bb7 14. Ng4 Nxg4 15. Qxg4 Bc8 16. Qg3 Be6 17. f4 Bf6 18. f5 b4 19. Na4 Qd8 20. fxe6 Bh4 21. Qg4 Bxe1 22. exf7+ Rxf7 23. Rxe1 Kh8 24. Bc4 Rf8 25. Nb6 Rb8 26. Nd7 a5 27. Nxf8 Qxf8 28. Rf1 Qe8 29. Rf7 Qg8 30. Rc7 Qf8 31. Rxc6 h6 32. Rc7 Re8 33. Rf7 Qg8 34. Qg6 Qh7 35. Rxg7 Qxg7 36. Qxe8+ Kh7 37. Qf7 a4 38. Qxg7+ Kxg7 39. Bb5 b3 40. axb3 axb3 41. cxb3 h5 42. Bc6 d5 43. exd5 e4 44. d6 h4 45. d7 Kf7 46. d8=Q Kg6 47. Bxe4+ Kf7 48. Qd7+ Kf8 49. Bh6+ 1-0 | ||||
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2019.08.19
Naycc U14
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| 20325 | De Costa, Benjamin (1332) | Liu, Harrison (1684) | 0-1 | |
| 1. d4 Nf6 2. c4 g6 3. f3 d5 4. cxd5 Nxd5 5. e4 Nf6 6. Nc3 Bg7 7. Be3 O-O 8. Qd2 c6 9. Bc4 e6 10. Nge2 Nbd7 11. Rd1 b5 12. Bb3 Nb6 13. O-O Bb7 14. Nc1 a5 15. Nd3 a4 16. Bc2 Nc4 17. Qf2 Ng4 18. fxg4 Nxe3 19. Qxe3 Bxd4 20. Nf2 Bxe3 21. Rxd8 Rfxd8 22. Kh1 Rd2 23. Nfd1 Rxc2 24. Nxe3 Rxb2 25. g5 b4 26. Ncd1 Rxa2 27. Ng4 Kg7 28. Ne5 Rf8 29. Nd7 Ba6 30. Nxf8 Bxf1 31. Kg1 Ra1 32. Kxf1 Rxd1+ 33. Ke2 Rd4 34. Ke3 c5 35. Nxe6+ fxe6 36. e5 a3 37. g4 a2 38. h4 a1=Q 39. h5 Qc3+ 40. Kf2 Rd2+ 0-1 | ||||
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2019.08.18
Naycc U14
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| 20287 | Richard, Leo (1940) | De Costa, Benjamin (1332) | 1-0 | |
| 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d5 6. c4 c6 7. b3 Nbd7 8. Bb2 Qc7 9. Nc3 dxc4 10. bxc4 Nb6 11. Qd3 Rd8 12. Rac1 Bh6 13. Rc2 Be6 14. d5 Rac8 15. Nd4 c5 16. Ncb5 Qb8 17. dxe6 fxe6 18. Bh3 cxd4 19. Bxe6+ Kg7 20. Bxc8 Qxc8 21. Nxd4 Rd6 22. c5 Rxd4 23. Qxd4 Nd5 24. Qxd5 Kf8 25. Bxf6 exf6 26. Qd6+ Kg7 27. Qe7+ Kg8 28. Rd1 Bf8 29. Rd8 Qxd8 30. Qxd8 Kg7 31. c6 bxc6 32. Rxc6 Bb4 33. Qxf6+ Kh6 34. Rc4 Be7 35. Rh4# 1-0 | ||||
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2019.08.18
Naycc U14
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| 20264 | De Costa, Benjamin (1332) | Yang, Henry (1527) | 1-0 | |
| 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. Nf3 O-O 6. e3 Nbd7 7. Bd3 b6 8. cxd5 exd5 9. Rc1 Bb7 10. O-O h6 11. Bf4 c5 12. Qe2 Nh5 13. Bg3 Nxg3 14. hxg3 Nf6 15. Rfd1 Rc8 16. Bf5 Rb8 17. Bb1 Rc8 18. Bf5 Rb8 19. Ne5 a6 20. Nf3 Qc7 21. dxc5 bxc5 22. b3 Rfd8 23. Bd3 Qa5 24. Qe1 Ne4 25. Na4 Qxe1+ 26. Rxe1 Rbc8 27. Red1 Kf8 28. Nb6 Rc7 29. Bxe4 dxe4 30. Rxd8+ Bxd8 31. Ne5 Bf6 32. Ned7+ Ke8 33. Nxf6+ gxf6 34. Na4 Ke7 35. Rxc5 Rd7 36. Nb6 Rd1+ 37. Kh2 Kd6 38. Rc2 h5 39. Nc4+ Kd5 40. Rd2+ Rxd2 41. Nxd2 Bc8 42. Kg1 f5 43. Kf1 Kc5 44. a3 Be6 45. Ke1 a5 46. Kd1 Bd5 47. Kc2 Be6 48. Kc3 Bd5 49. Kb2 Be6 50. Nb1 Bd5 51. Nc3 Bc6 52. Ne2 f6 53. Nf4 Be8 54. Kc3 Bf7 55. b4+ axb4+ 56. axb4+ Kb5 57. Kd4 Kxb4 58. Nd5+ Bxd5 59. Kxd5 Kc3 60. Ke6 Kd3 61. Kxf6 Ke2 62. Kxf5 Kxf2 63. Kf4 Kxg2 64. g4 h4 65. g5 h3 66. g6 h2 67. g7 h1=Q 68. g8=Q+ Kf1 69. Qc4+ Kg2 70. Qe2+ Kg1 71. Qe1+ Kg2 72. Qxh1+ 1-0 | ||||
|
2019.08.17
Naycc U14
|
||||
| 20226 | Gao, Raymond (2136) | De Costa, Benjamin (1332) | 1-0 | |
| 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be3 Bb4 7. Ne2 Nf6 8. a3 Be7 9. Na4 Qa5+ 10. Nec3 Bd8 11. b4 Qh5 12. Be2 Qg6 13. e5 Qxg2 14. Bf3 Qg6 15. exf6 Bxf6 16. Kf1 Bxc3 17. Nxc3 d5 18. Rg1 Qf5 19. Bg4 Qe5 20. Nxd5 exd5 21. Bxc8 Qc7 22. Bg4 Qc4+ 23. Be2 Qc3 24. Qd4 Qxd4 25. Bxd4 Nc6 26. Bxg7 Rg8 27. Bd3 O-O-O 28. Bf6 Rxg1+ 29. Kxg1 Rd6 30. Bg5 Ne5 31. Bf4 f6 32. Bxh7 Rd8 33. Bf5+ Kb8 34. Re1 Re8 35. Bxe5+ fxe5 36. Rd1 d4 37. Re1 Kc7 38. f4 Kd6 39. fxe5+ Rxe5 40. Rxe5 Kxe5 41. Bc8 Ke4 42. Bxb7+ Ke3 43. Bxa6 Kd2 44. h4 Kxc2 45. h5 d3 46. Bxd3+ Kxd3 47. h6 Kc3 48. h7 Kb3 49. h8=Q Kxa3 50. b5 Ka4 51. b6 Ka5 52. b7 Ka4 53. Qb2 Ka5 54. b8=N Ka4 55. Nd7 Ka5 56. Qb3 Ka6 57. Qb4 Ka7 58. Qb5 Ka8 59. Nf6 Ka7 60. Nd5 Ka8 61. Kf2 Ka7 62. Qb6+ Ka8 63. Nc7# 1-0 | ||||
|
2019.08.17
Naycc U14
|
||||
| 20215 | De Costa, Benjamin (1332) | Putnam, Liam Henry (2252) | 0-1 | |
| 1. d4 Nf6 2. c4 g6 3. f3 Bg7 4. e4 d6 5. Nc3 O-O 6. Be3 Nc6 7. Nge2 a6 8. Qd2 Rb8 9. Ng3 h5 10. Bd3 h4 11. Nge2 Bd7 12. d5 Ne5 13. Nd4 c5 14. dxc6 bxc6 15. b3 h3 16. Bf1 Nh5 17. O-O-O c5 18. Nde2 a5 19. f4 Ng4 20. Bxc5 dxc5 21. gxh3 Nf2 22. Qxd7 Qxd7 23. Rxd7 Nxh1 24. Nd5 e6 25. Ne7+ Kh8 26. Nc6 Rb6 27. Nxa5 Ra6 28. Bg2 Rxa5 29. Bxh1 Rxa2 30. Bf3 Rb8 31. Rd3 Rxe2 32. Bxe2 Nxf4 33. Rd2 Nxe2+ 34. Rxe2 Rxb3 35. Rf2 f5 36. exf5 gxf5 37. Re2 e5 38. h4 Rc3+ 39. Rc2 Rxc2+ 40. Kxc2 e4 41. Kd2 Bd4 42. Ke2 f4 43. h3 f3+ 44. Kf1 e3 45. Ke1 e2 46. Kd2 Bf2 47. h5 e1=Q+ 48. Kd3 Qe2+ 49. Kc3 Bd4+ 50. Kb3 f2 51. h4 Qb2+ 52. Ka4 f1=R 53. h6 Ra1# 0-1 | ||||
|
2019.08.16
Naycc U14
|
||||
| 20193 | De Costa, Benjamin (1332) | Vijendra, Vinushan (1474) | 1-0 | |
| 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 c5 6. dxc5 Qa5 7. Bxf6 gxf6 8. Qd4 Nd7 9. cxd5 Bxc5 10. Qd2 Nb6 11. e4 Bb4 12. Bb5+ Kf8 13. O-O Bxc3 14. Qxc3 Qxb5 15. Qxf6 Rg8 16. Ng5 Rg7 17. Nxe6+ Bxe6 18. dxe6 Qg5 19. Qxg5 Rxg5 20. exf7 Rc8 21. Rac1 Rgc5 22. Rxc5 Rxc5 23. f3 Rc2 24. Rf2 Rc1+ 25. Rf1 Rxf1+ 26. Kxf1 Kxf7 27. Ke2 Ke6 28. f4 Na4 29. Kd3 Nxb2+ 30. Kd4 Na4 31. f5+ Kf6 32. g4 Nb6 33. h4 h6 34. e5+ Kf7 35. g5 hxg5 36. hxg5 Nc8 37. e6+ Kg7 38. f6+ Kg8 39. Kc5 a6 40. g6 Kf8 41. g7+ Kg8 42. e7 Kf7 1-0 | ||||
|
2019.08.16
Naycc U14
|
||||
| 20138 | Wu, Lucian (1832) | De Costa, Benjamin (1332) | 1/2-1/2 | |
| 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Bc5 5. e3 Nc6 6. Be2 Ngxe5 7. O-O O-O 8. Nc3 d6 9. b3 Nxf3+ 10. Bxf3 Ne5 11. Bb2 c6 12. Ne4 Nxf3+ 13. Qxf3 f5 14. Nxc5 dxc5 15. Qg3 Qe7 16. h4 Be6 17. h5 h6 18. Rfd1 Rad8 19. Be5 Rxd1+ 20. Rxd1 Qg5 21. Qf3 Bf7 22. Rd7 Rd8 23. Rxd8+ Qxd8 24. Qxf5 Qd1+ 25. Kh2 Qxh5+ 26. Qxh5 Bxh5 27. Bd6 Bg6 28. Bxc5 Bb1 29. a3 b6 30. Bd6 Ba2 31. Bb8 a6 32. Ba7 Bxb3 33. Bxb6 Bxc4 34. Kg3 Kf7 35. Kf4 Ke6 36. Bc5 g6 37. g3 Bd3 38. e4 Bc2 39. f3 g5+ 40. Kg4 Bd1 1/2-1/2 | ||||
|
2019.04.11
Scarborough CC-ch U1800
|
||||
| 44390 | De Costa, Benjamin (1232) | Armstrong, Robert J (1447) | 1-0 | |
| 1. d4 f5 2. c4 Nf6 3. Nc3 e6 4. Nf3 Ne4 5. Bd2 Be7 6. e3 O-O 7. Bd3 d5 8. c5 Nc6 9. O-O Nb4 10. Ne5 Nxd3 11. Nxd3 b6 12. f3 Nxd2 13. Qxd2 bxc5 14. Nxc5 Rb8 15. b3 e5 16. f4 e4 17. Rfd1 c6 18. N3a4 Kh8 19. Rdc1 g5 20. g3 Rg8 21. Kh1 Qe8 22. Rg1 Qh5 23. Rg2 Rg6 24. Rag1 Be6 25. Nxe6 Rxe6 26. Nc5 Rg6 27. Nd7 Rc8 28. Ne5 Rg7 29. Qe2 Qh3 30. Qa6 Rcg8 31. Nxc6 gxf4 32. Nxe7 Rxe7 33. Qf6+ Reg7 34. gxf4 Qf3 35. b4 Re8 36. Qxg7# 1-0 | ||||
|
2016.07.08
Cycc U10
|
||||
| 57824 | Balachandran, Kousihan (1525) | De Costa, Benjamin (1394) | 0-1 | |
| 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nc6 5. Nf3 Bg4 6. Be2 Nf6 7. h3 Bh5 8. Be3 e6 9. c4 Qd8 10. dxc5 Qc7 11. O-O Rd8 12. Qc2 Be7 13. Nc3 O-O 14. Rad1 Nb4 15. Qb3 Bxc5 16. Bxc5 Qxc5 17. Rxd8 Rxd8 18. a3 Nc6 19. Rd1 Rxd1+ 20. Bxd1 Qe7 21. Be2 b6 22. Qb5 Bxf3 23. Bxf3 Nd4 24. Qe5 Nxf3+ 25. gxf3 Nd7 26. Qc7 Qg5+ 27. Kh2 Qe5+ 28. Qxe5 Nxe5 29. Kg3 Nxc4 30. Nd1 Kf8 31. Kf4 Ke7 32. Ke4 Kd6 33. Kd4 Ne5 34. f4 Ng6 35. Ke4 e5 36. fxe5+ Nxe5 37. b3 g6 38. f4 f5+ 39. Ke3 Nc6 40. b4 Kd5 41. Kd3 h6 42. h4 a5 43. Nc3+ Kd6 44. Kc4 axb4 45. axb4 Na7 46. Nb5+ Nxb5 47. Kxb5 Kc7 48. Ka6 Kc6 49. b5+ Kc5 50. Kb7 Kxb5 51. Kc7 Kc5 52. Kd7 Kd5 53. Ke7 Ke4 54. Kf6 Kxf4 55. Kxg6 b5 56. Kxh6 b4 57. Kg6 b3 58. h5 b2 59. h6 b1=Q 60. h7 Qb6+ 61. Kg7 Qc7+ 62. Kg6 Qd6+ 63. Kg7 Qe7+ 64. Kg6 Qxh7+ 65. Kxh7 Kg3 66. Kg6 f4 67. Kg5 f3 68. Kf5 f2 69. Ke4 f1=Q 70. Kd5 Qd3+ 71. Ke5 Kf3 72. Ke6 Kf4 73. Kf6 Qd6+ 74. Kf7 Kg5 75. Kg7 Qe7+ 76. Kh8 Kg6 77. Kg8 Qg7# 0-1 | ||||
|
2016.07.08
Cycc U10
|
||||
| 57847 | De Costa, Benjamin (1394) | Jeyakumar, Bhavatharshan (1416) | 1/2-1/2 | |
| 1. Nf3 Nf6 2. g3 d5 3. d3 Nc6 4. Bg2 e5 5. O-O Bc5 6. c4 Be6 7. e3 O-O 8. Nc3 dxc4 9. dxc4 Bxc4 10. Re1 e4 11. Nd2 Bd3 12. Ndxe4 Nxe4 13. Nxe4 Bxe4 14. Bxe4 Qe7 15. Qc2 Nb4 16. Qb1 h6 17. Bxb7 Rab8 18. Bg2 Rfd8 19. a3 Nd3 20. Rd1 Ne5 21. Rxd8+ Rxd8 22. b4 Rd1+ 23. Bf1 Nf3+ 24. Kg2 Ne1+ 25. Kg1 Nf3+ 26. Kg2 Ne1+ 27. Kg1 1/2-1/2 | ||||
|
2016.07.07
Cycc U10
|
||||
| 57776 | De Costa, Benjamin (1394) | Rusonik, Mark (1817) | 0-1 | |
| 1. Nf3 f5 2. d3 Nf6 3. e4 fxe4 4. dxe4 Nxe4 5. Bd3 d5 6. Bxe4 dxe4 7. Qxd8+ Kxd8 8. Ng5 Ke8 9. Nc3 e6 10. Ngxe4 Bb4 11. Bf4 c6 12. Nd6+ Ke7 13. Nxc8+ Rxc8 14. Bd2 Na6 15. O-O h6 16. a3 Ba5 17. b4 Bb6 18. Ne4 Nc7 19. c4 Bd4 20. Bc3 Bxc3 21. Nxc3 a5 22. Na4 Rd8 23. Nc5 axb4 24. axb4 b6 25. Nb3 Rd3 26. Rxa8 Nxa8 27. Rb1 Nc7 28. Kf1 Na6 29. b5 cxb5 30. cxb5 Nc7 31. Rc1 Kd7 32. Rb1 Rd5 33. Nc1 Rxb5 34. Rxb5 Nxb5 35. Ke2 Kc6 36. Kd3 Kd5 37. Nb3 e5 38. f3 Nd4 39. Nc1 Nf5 40. g3 Nd4 41. f4 exf4 42. gxf4 Nf3 43. h3 Ng1 44. h4 Nf3 45. h5 Nd4 46. Na2 Nf5 47. Nc3+ Kc5 48. Ne4+ Kb4 49. Ke2 Kc4 50. Kf3 b5 51. Kg4 Ne3+ 52. Kf3 Nf5 53. Kg4 Ne7 54. f5 b4 55. Kf4 Kd4 56. Nd2 Nd5+ 57. Kf3 Ke5 58. Nc4+ Kxf5 59. Nd6+ Kg5 60. Ne4+ Kxh5 61. Ng3+ Kg6 62. Ne4 h5 63. Kg3 b3 64. Nd2 b2 65. Nb1 Kg5 66. Kh3 Nf4+ 67. Kg3 h4+ 68. Kh2 Kg4 69. Nd2 g5 70. Nb1 Kf3 71. Nd2+ Ke2 72. Nb1 g4 73. Nc3+ Kd2 74. Nb1+ Kc1 75. Na3 b1=Q 76. Nxb1 Kxb1 77. Kh1 Kc2 78. Kh2 Kd2 79. Kh1 Ke2 80. Kg1 g3 81. Kh1 g2+ 82. Kh2 h3 83. Kg1 Nd3 84. Kh2 Ne5 85. Kg1 Nf3# 0-1 | ||||
|
2016.07.07
Cycc U10
|
||||
| 57807 | Brassard, Mathieu (875) | De Costa, Benjamin (1394) | 0-1 | |
| 1. e4 c5 2. Qf3 Nc6 3. Bc4 Ne5 4. Qf5 Nxc4 5. Nh3 e6 6. Qf3 b6 7. d3 Ne5 8. Qf4 Bd6 9. Ng5 Nxd3+ 10. Ke2 Nxf4+ 11. Ke3 Nxg2+ 12. Kf3 Nh4+ 13. Ke2 Bb7 14. Rf1 Be7 15. Nf3 Bxe4 16. Nxh4 Bxh4 17. Be3 Bf6 18. Nc3 Bxc2 19. Rac1 Bg6 20. Nb5 d5 21. Bf4 e5 22. Be3 c4 23. Rfd1 e4 24. f3 Bh5 25. Rc2 Bxf3+ 26. Ke1 Bh4+ 27. Bf2 Bxf2+ 28. Kxf2 Bxd1 29. Rd2 Qf6+ 30. Ke3 Qh6+ 31. Kf2 Qxd2+ 32. Kg3 O-O-O 33. Kh3 Qe2 34. Kh4 Qg4# 0-1 | ||||
|
2016.07.06
Cycc U10
|
||||
| 57730 | Zhou, Aiden (1847) | De Costa, Benjamin (1394) | 1-0 | |
| 1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. c4 Bg7 5. Nc3 O-O 6. g3 Nc6 7. Bg2 f5 8. e3 Re8 9. Nge2 Rb8 10. O-O b6 11. Nf4 Ba6 12. Qa4 Na5 13. b4 Bxc4 14. bxa5 Bxf1 15. Rxf1 c5 16. a6 cxd4 17. exd4 Qc8 18. Nb5 Re4 19. Bxe4 fxe4 20. Nxa7 Qc7 21. Nb5 Qc6 22. Qb3 Ra8 23. a7 Bxd4 24. Nxd4 Qc5 25. Nb5 h6 26. Nd5 Rxa7 27. Nxa7 b5 28. Nxb5 e3 29. Nxe3 d5 30. Qxd5 Qxd5 31. Nxd5 f6 32. Re1 g5 33. Re7 Kf8 34. a4 f5 35. a5 f4 36. a6 fxg3 37. a7 gxh2+ 38. Kxh2 Kg8 39. a8=R# 1-0 | ||||
|
2016.07.06
Cycc U10
|
||||
| 57760 | De Costa, Benjamin (1394) | Xing, Blair (924) | 1-0 | |
| 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 Bg4 7. h3 Be6 8. Ng5 Qe7 9. Nxe6 Qxe6 10. O-O g6 11. Be3 Bg7 12. Nd2 O-O 13. Qe1 d5 14. Bb3 Na5 15. Bc2 c6 16. b4 Rad8 17. bxa5 dxe4 18. Nxe4 Nxe4 19. dxe4 Rd7 20. Bb6 Bh6 21. Bb3 Qf6 22. Rd1 Rxd1 23. Qxd1 Bf4 24. Qe2 Qe7 25. Qc4 Qd7 26. Rd1 Qc8 27. Qd3 Bg5 28. Qd7 Qxd7 29. Rxd7 Kg7 30. Rxb7 Ra8 31. Rxf7+ Kh6 32. g3 Bd2 33. h4 Bxc3 34. Be3+ Kh5 35. Rxh7+ Kg4 36. Kg2 Bxa5 37. f3# 1-0 | ||||
|
2016.07.05
Cycc U10
|
||||
| 57720 | De Costa, Benjamin (1404) | Marcelloni, Jacob (686) | 1-0 | |
| 1. d4 Nf6 2. c4 g6 3. f3 d5 4. cxd5 Nxd5 5. e4 Nb6 6. Nc3 Nc6 7. Be3 Nc4 8. Bxc4 Bg7 9. Nge2 O-O 10. Qd2 b6 11. O-O-O Bb7 12. h4 e6 13. h5 Na5 14. Bd3 Qe7 15. hxg6 fxg6 16. Bh6 Rad8 17. Bxg7 Qxg7 18. Nf4 Qf6 19. Nfe2 Nc6 20. d5 exd5 21. Nxd5 Qe5 22. Qc3 Qg5+ 23. Qd2 Qxg2 24. Qh6 Rd7 25. Bc4 Rff7 26. Nf6+ Kh8 27. Bxf7 Rxf7 28. Qxh7+ Rxh7 29. Rxh7# 1-0 | ||||
|
2015.07.09
Cycc U10
|
||||
| 69381 | Jacobs, Michael (888) | De Costa, Benjamin (1216) | 1/2-1/2 | |
| 1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. a3 Qc7 5. Bc4 b5 6. Ba2 Bb7 7. d3 d6 8. Bf4 Nc6 9. O-O Be7 10. Re1 Bf6 11. Qd2 Nge7 12. Rad1 O-O 13. Ne2 Ng6 14. c3 Nxf4 15. Qxf4 Rac8 16. d4 c4 17. Ng3 e5 18. Qg4 g6 19. b3 cxb3 20. Bxb3 Bg7 21. Nh4 Kh8 22. Re3 exd4 23. cxd4 Nxd4 24. Ba2 Nc6 25. f4 Rcd8 26. Kh1 Qc8 27. f5 Ne5 28. Qf4 Qc2 29. Bb3 Qc7 30. f6 Bh6 31. Qxh6 Rg8 32. Ne2 Ng4 33. Rc3 Qxc3 34. Qg7+ Rxg7 35. fxg7+ Kxg7 36. Nxc3 Nf2+ 37. Kg1 Nxd1 38. Nxd1 Bxe4 39. Nc3 1/2-1/2 | ||||
|
2015.07.09
Cycc U10
|
||||
| 69402 | De Costa, Benjamin (1216) | Damarla, Rishi (743) | 1-0 | |
| 1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 Bd7 5. Nc3 Nf6 6. Be3 Be7 7. h3 O-O 8. O-O a6 9. Ba4 b5 10. Bb3 b4 11. Ne2 Nxe4 12. Qd3 Nf6 13. dxe5 dxe5 14. Ng3 Bd6 15. c3 Rb8 16. Bc2 Re8 17. Bg5 g6 18. Ne4 Be7 19. Nxf6+ Bxf6 20. Bxf6 e4 21. Bxd8 exd3 22. Bxc7 Rbc8 23. Bxd3 Rxc7 24. Bxa6 bxc3 25. bxc3 Nb8 26. Bd3 Rxc3 27. Rfd1 Ba4 28. Rd2 Nd7 29. Re2 Rec8 30. Re3 Nb6 31. Ba6 Rxe3 32. Bxc8 Rc3 33. Bb7 Kg7 34. Rb1 Nd5 35. Bxd5 Bc2 36. Rc1 Kf6 37. Be4 Rc4 38. Bxc2 Rc7 39. Nd4 Ke5 40. Rd1 Ra7 41. Nc6+ Ke6 42. Bb3+ Kf6 43. Rd6+ Kg7 44. Nxa7 Kh6 45. Bxf7 Kg7 46. Rd7 Kh6 47. Bg8 Kg5 48. h4+ Kxh4 49. Bxh7 Kg5 50. Rd6 Kf5 51. Bxg6+ Ke5 52. f4+ Kxd6 53. a4 Ke6 54. a5 Kd6 55. f5 Ke7 56. a6 Kd7 57. f6 Ke6 58. f7 Ke7 59. Nc6+ Kf8 60. a7 Kg7 61. f8=Q+ Kxf8 62. Ne7 Kxe7 63. Bf7 Kxf7 64. a8=Q Kf6 65. g4 Kg5 66. Qg8+ Kf4 67. g5 Ke4 68. Qf8 Kd4 69. g6 Kd5 70. g7 Kd4 71. g8=Q Ke4 72. Qfg7 Kf4 73. Q8h7 Kf3 74. Qgh6 Kg3 75. Qf6 Kg4 76. Qhh6 Kg3 77. Qhg5+ Kh3 78. Kf2 Kh2 79. Qg3+ Kh1 80. Qc6# 1-0 | ||||
|
2015.07.08
Cycc U10
|
||||
| 69336 | Tang, Matthew (1432) | De Costa, Benjamin (1216) | 0-1 | |
| 1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. Nf3 d5 5. e5 d4 6. Ne4 f5 7. exf6 Nxf6 8. d3 Nxe4 9. dxe4 Be7 10. e5 O-O 11. Bd3 a6 12. O-O b5 13. Be4 Bb7 14. b3 Qc7 15. Ng5 Bxg5 16. fxg5 Nxe5 17. Bxb7 Rxf1+ 18. Qxf1 Qxb7 19. Qe2 Qd5 20. Bf4 Ng6 21. Bd2 e5 22. Re1 Re8 23. a4 b4 24. Qxa6 e4 25. Qb5 Rd8 26. Bxb4 cxb4 27. Qxd5+ Rxd5 28. Rxe4 Kf7 29. Kf2 Rf5+ 30. Ke2 Rxg5 31. Rxd4 Rxg2+ 32. Kd3 Rxh2 33. Rxb4 Rh3+ 34. Kd2 Rh2+ 35. Kc1 Rh5 36. Rb7+ Kf6 37. Rb6+ Kf7 38. b4 Rh4 39. a5 Ne5 40. Rb7+ Ke6 41. a6 Nc4 42. Kb1 Na3+ 43. Kb2 Nc4+ 44. Ka2 Nd6 45. a7 Nxb7 46. a8=Q Rxb4 47. Qe8+ Kd5 48. Qg8+ Kd4 49. Qxg7+ Kc4 50. Qc7+ Nc5 51. Qf4+ Kc3 52. Qf2 Rb2+ 53. Ka3 Nd3 54. Qf6+ Kxc2 55. Qc6+ Kd2 56. Qh6+ Kc2 57. Qh5 Rb3+ 58. Ka4 Nb2+ 59. Ka5 Nc4+ 60. Ka6 Ra3+ 61. Kb5 Ra5+ 62. Kxc4 Rxh5 63. Kd4 Rg5 0-1 | ||||
|
2015.07.08
Cycc U10
|
||||
| 69354 | De Costa, Benjamin (1216) | Huang, Patrick (1629) | 0-1 | |
| 1. e4 c5 2. Nc3 d6 3. g3 Nf6 4. d3 Nc6 5. Bg2 a6 6. h3 e6 7. Be3 Be7 8. f4 Qc7 9. Nf3 b5 10. O-O Bb7 11. Qd2 O-O-O 12. a4 b4 13. Ne2 Nd7 14. c3 a5 15. d4 d5 16. e5 c4 17. g4 b3 18. Ng3 g6 19. Rab1 Nb6 20. Ra1 Na7 21. f5 gxf5 22. gxf5 Rdg8 23. Qf2 Qd7 24. f6 Bd8 25. Ra3 Bc6 26. Rfa1 Bxa4 27. Bf4 Bc7 28. Rc1 Na8 29. Bh6 Re8 30. Bg7 Rhg8 31. Nh2 Bb5 32. Ng4 Rd8 33. Nh6 Rge8 34. h4 Nc6 35. Nf1 a4 36. Nd2 Nxe5 37. dxe5 Bb6 38. Qxb6 Nxb6 39. Nf3 Qc7 40. Ng5 Qxe5 41. Ngxf7 Qe3+ 42. Kh2 Qxc1 43. Nxd8 Qxb2 44. Rxb3 axb3 45. Ndf7 Qa3 46. Ng5 b2 47. f7 b1=Q 48. fxe8=Q+ Bxe8 49. Nxe6 Qac1 50. Bd4 Bd7 51. Ng5 Qf4# 0-1 | ||||
|
2015.07.07
Cycc U10
|
||||
| 69290 | Zhao, Jonathan (1622) | De Costa, Benjamin (1216) | 1-0 | |
| 1. d4 Nf6 2. Nf3 g6 3. Nbd2 Bg7 4. e4 d6 5. Bd3 O-O 6. O-O c5 7. c3 e6 8. Qe2 Nc6 9. Rd1 Qb6 10. Nc4 Qd8 11. dxc5 dxc5 12. e5 Nd5 13. Bc2 Qc7 14. Bg5 h6 15. Bh4 b5 16. Nd6 a6 17. Bg3 Bd7 18. Qe4 Rad8 19. Nh4 Nce7 20. Nf3 Nc6 21. h4 h5 22. Bh2 c4 23. g4 hxg4 24. Qxg4 Nce7 25. h5 Be8 26. hxg6 fxg6 27. Qxe6+ Kh8 28. Rd4 Nf5 29. Bxf5 Bf7 30. Nxf7+ Qxf7 31. Qxf7 Rxf7 32. Rh4+ Bh6 33. Rxh6+ Kg7 34. Rxg6+ Kf8 35. Nd4 Rxf5 36. Nxf5 Ne7 37. Nxe7 Kxe7 38. Bg3 Rd2 39. f4 Rxb2 40. f5 Re2 41. Rg7+ Ke8 42. f6 Re3 43. Rd1 Rd3 44. Rxd3 cxd3 45. e6 d2 46. Rg8# 1-0 | ||||
|
2015.07.07
Cycc U10
|
||||
| 69321 | De Costa, Benjamin (1216) | Lodhi, Rayyan (399) | 1-0 | |
| 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 d6 5. c3 Bd7 6. O-O Qe7 7. Re1 O-O-O 8. Ba4 Bg4 9. Bxc6 Bxf3 10. Bxb7+ Kb8 11. Qxf3 Kxb7 12. b4 g5 13. Bxg5 Bg7 14. a4 Kc8 15. d4 Rde8 16. d5 h6 17. Bh4 Qd7 18. Bxf6 Bxf6 19. Qxf6 Qe7 20. Qxe7 Rxe7 21. c4 Rg8 22. c5 Kd7 23. c6+ Kc8 24. a5 Kb8 25. b5 a6 26. b6 f6 27. Re2 Reg7 28. g3 f5 29. f3 fxe4 30. fxe4 h5 31. Kg2 Rh8 32. h4 Rhg8 33. Ra3 cxb6 34. axb6 Kc8 35. Rxa6 1-0 | ||||
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2015.07.06
Cycc U10
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| 69262 | De Costa, Benjamin (1216) | Issani, Nameer (1983) | 1-0 | |
| 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Be7 7. O-O d6 8. c3 O-O 9. Re1 Bg4 10. h3 Bh5 11. Nbd2 Na5 12. Bc2 c5 13. Nf1 Rc8 14. Ng3 Bg6 15. Nh4 Qc7 16. Nhf5 Rfe8 17. Nxe7+ Qxe7 18. Bg5 h6 19. Bh4 Bh7 20. Nh5 g5 21. Nxf6+ Qxf6 22. Bg3 Nc6 23. Re3 Ne7 24. Qf3 Qe6 25. Bb3 c4 26. dxc4 bxc4 27. Ba4 Rf8 28. Ree1 f5 29. exf5 Nxf5 30. Qg4 Qg6 31. Bc2 h5 32. Qe4 Qe6 33. Bh2 Rc7 34. Qe2 Bg6 35. Qd2 Qf6 36. Rad1 Rcf7 37. Rf1 Rd7 38. Qd5+ Bf7 39. Qf3 Bg6 40. Qd5+ Kg7 41. Qxc4 Rh8 42. Rfe1 g4 43. Bxe5 dxe5 44. Rxd7+ Kh6 45. hxg4 Qh4 46. Bxf5 Bxf5 47. Qc6+ Bg6 48. gxh5 Qxh5 49. Qf6 Rg8 50. Rxe5 Qg4 51. Rd4 1-0 | ||||