Event: Round 1: Kovchan, Alexander - Cheng, Louis
Date: 2025-03-01
White: Kovchan, Alexander
WhiteTitle: GM
WhiteElo: 2453
Black: Cheng, Louis
BlackElo: 1839
Result: 1-0
ECO: B36
Opening: Sicilian Defense: Accelerated Dragon, Maróczy Bind, Gurgenidze Variation
Variant: Standard
TimeControl: 15+10

1. e4 { [%eval 0.18] [%clk 0:15:18] } 1... c5 { [%eval 0.25] [%clk 0:15:19] } 2. Nf3 { [%eval 0.2] [%clk 0:15:27] } 2... g6 { [%eval 0.34] [%clk 0:15:28] } 3. d4 { [%eval 0.46] [%clk 0:15:28] } 3... cxd4 { [%eval 0.38] [%clk 0:15:36] } 4. Nxd4 { [%eval 0.35] [%clk 0:15:37] } 4... Nc6 { [%eval 0.47] [%clk 0:15:44] } 5. c4 { [%eval 0.4] [%clk 0:15:46] } 5... Nf6 { [%eval 0.48] [%clk 0:15:52] } 6. Nc3 { [%eval 0.41] [%clk 0:15:54] } 6... Nxd4 { [%eval 0.42] [%clk 0:16:00] } 7. Qxd4 { [%eval 0.4] [%clk 0:16:02] } 7... d6 { [%eval 0.46] [%clk 0:16:09] } 8. Be3 { [%eval 0.53] [%clk 0:15:57] } 8... Bg7 { [%eval 0.51] [%clk 0:16:17] } 9. f3 { [%eval 0.4] [%clk 0:16:05] } 9... O-O { [%eval 0.47] [%clk 0:16:24] } 10. Qd2 { [%eval 0.57] [%clk 0:16:13] } 10... Be6 { [%eval 0.57] [%clk 0:16:29] } 11. Rc1 { [%eval 0.61] [%clk 0:16:21] } 11... Qa5 { [%eval 0.55] [%clk 0:16:35] } 12. b3 { [%eval 0.52] [%clk 0:16:28] } 12... Rfc8 { [%eval 0.52] [%clk 0:16:41] } 13. Bd3 { [%eval 0.49] [%clk 0:16:22] } 13... a6 { [%eval 0.5] [%clk 0:16:21] } 14. Na4 { [%eval 0.2] [%clk 0:15:00] } 14... Qxd2+ { [%eval 0.2] [%clk 0:16:25] } 15. Kxd2 { [%eval 0.21] [%clk 0:15:07] } 15... Nd7 { [%eval 0.2] [%clk 0:16:33] } 16. Rhd1 { [%eval 0.09] [%clk 0:14:37] } 16... Rab8 { [%eval 0.12] [%clk 0:14:37] } 17. Nc3 { [%eval 0.08] [%clk 0:14:26] } 17... h5 { [%eval 0.22] [%clk 0:12:48] } 18. Nd5 { [%eval 0.24] [%clk 0:14:22] } 18... Bxd5 { [%eval 0.36] [%clk 0:12:55] } 19. cxd5 { [%eval 0.37] [%clk 0:14:11] } 19... Bb2 { [%eval 0.4] [%clk 0:12:20] } 20. Rc2 { [%eval 0.23] [%clk 0:13:34] } 20... Rxc2+ { [%eval 0.29] [%clk 0:11:45] } 21. Bxc2 { [%eval 0.2] [%clk 0:13:02] } 21... Rc8 { [%eval 0.23] [%clk 0:11:31] } 22. f4 { [%eval 0.05] [%clk 0:11:48] } 22... Bc3+ { [%eval 0.04] [%clk 0:09:44] } 23. Kd3 { [%eval 0.09] [%clk 0:11:52] } 23... Bb4 { [%eval 0.21] [%clk 0:09:42] } 24. Bb1 { [%eval 0.2] [%clk 0:11:56] } 24... Ba3 { [%eval 0.28] [%clk 0:08:53] } 25. Ke2 { [%eval 0.26] [%clk 0:11:32] } 25... b5 { [%eval 0.25] [%clk 0:07:31] } 26. Bd4 { [%eval 0.23] [%clk 0:11:16] } 26... e5 { [%eval 0.39] [%clk 0:06:19] } 27. dxe6 { [%eval 0.53] [%clk 0:11:17] } 27... fxe6 { [%eval 0.73] [%clk 0:06:26] } 28. Be3 { [%eval 0.21] [%clk 0:10:54] } 28... Kf7 { [%eval 0.14] [%clk 0:06:26] } 29. h3 { [%eval 0.07] [%clk 0:10:43] } 29... e5 { [%eval 0.08] [%clk 0:05:53] } 30. g3 { [%eval 0.08] [%clk 0:10:28] } 30... Ke7 { [%eval 0.17] [%clk 0:05:31] } 31. Rf1 { [%eval 0.02] [%clk 0:10:29] } 31... Bc5 { [%eval 0.08] [%clk 0:05:13] } 32. Bd2 { [%eval 0.16] [%clk 0:10:24] } 32... Bd4 { [%eval 0.43] [%clk 0:04:55] } 33. f5 { [%eval 0.35] [%clk 0:10:27] } 33... gxf5 { [%eval 0.66] [%clk 0:04:58] } 34. Rxf5 { [%eval 0.7] [%clk 0:10:34] } 34... Rg8 { [%eval 0.97] [%clk 0:04:54] } 35. Bg5+ { [%eval 0.96] [%clk 0:10:02] } 35... Ke8 { [%eval 0.81] [%clk 0:04:27] } 36. Bh4 { [%eval 0.53] [%clk 0:09:26] } 36... Rh8?! { [%eval 1.29] } { Inaccuracy. Rf8 was best. } { [%clk 0:04:04] } 37. Bc2 { [%eval 1.03] [%clk 0:08:45] } 37... Bb6 { [%eval 1.32] [%clk 0:03:24] } 38. b4 { [%eval 0.9] [%clk 0:08:18] } 38... Rf8? { [%eval 2.28] } { Mistake. Nb8 was best. } { [%clk 0:02:51] } 39. Rxf8+?! { [%eval 1.22] } { Inaccuracy. Bd1 was best. } { [%clk 0:07:27] } 39... Nxf8?! { [%eval 2.01] } { Inaccuracy. Kxf8 was best. } { [%clk 0:02:50] } 40. Bb3 { [%eval 2.0] [%clk 0:07:24] } 40... a5?! { [%eval 2.81] } { Inaccuracy. Bd4 was best. } { [%clk 0:02:28] } 41. bxa5 { [%eval 2.69] [%clk 0:07:25] } 41... Bxa5 { [%eval 2.48] [%clk 0:02:36] } 42. Bg5?! { [%eval 1.73] } { Inaccuracy. Bd5 was best. } { [%clk 0:07:01] } 42... Bc3?! { [%eval 2.4] } { Inaccuracy. Bd8 was best. } { [%clk 0:02:15] } 43. h4?! { [%eval 1.57] } { Inaccuracy. Bd5 was best. } { [%clk 0:07:00] } 43... Nh7 { [%eval 1.61] [%clk 0:02:07] } 44. Be3 { [%eval 1.3] [%clk 0:06:58] } 44... Nf6 { [%eval 1.35] [%clk 0:02:14] } 45. Kf3 { [%eval 1.6] [%clk 0:07:00] } 45... Ng4?! { [%eval 2.57] } { Inaccuracy. Be1 was best. } { [%clk 0:02:09] } 46. Bg5 { [%eval 2.46] [%clk 0:07:06] } 46... Bd4 { [%eval 2.39] [%clk 0:01:38] } 47. Be6 { [%eval 2.39] [%clk 0:07:10] } 47... Nh2+ { [%eval 2.13] [%clk 0:01:47] } 48. Ke2 { [%eval 2.28] [%clk 0:07:03] } 48... Ng4?! { [%eval 3.03] } { Inaccuracy. Bc5 was best. } { [%clk 0:01:44] } 49. Bc8?! { [%eval 2.04] } { Inaccuracy. Bf5 was best. } { [%clk 0:06:56] } 49... Kf7 { [%eval 2.59] [%clk 0:01:50] } 50. Ba6?! { [%eval 1.87] } { Inaccuracy. Bd7 was best. } { [%clk 0:06:52] } 50... b4 { [%eval 1.94] [%clk 0:01:59] } 51. Bc4+ { [%eval 1.86] [%clk 0:07:01] } 51... Kg7 { [%eval 1.69] [%clk 0:02:05] } 52. Be6 { [%eval 1.24] [%clk 0:06:45] } 52... Bc5?? { [%eval 5.37] } { Blunder. Nf6 was best. } { [%clk 0:01:57] } 53. Bd7?? { [%eval 0.97] } { Blunder. Bxg4 was best. } { [%clk 0:06:25] } 53... Kf7?? { [%eval 5.21] } { Blunder. Nf6 was best. } { [%clk 0:01:46] } 54. Bc6?? { [%eval 1.88] } { Blunder. Bxg4 was best. } { [%clk 0:06:13] } 54... Bf2? { [%eval 3.76] } { Mistake. Bb6 was best. } { [%clk 0:01:33] } 55. Kf3? { [%eval 2.29] } { Mistake. Bd5+ was best. } { [%clk 0:06:17] } 55... Bc5 { [%eval 2.53] [%clk 0:01:36] } 56. Bd2 { [%eval 1.99] [%clk 0:06:23] } 56... Nh2+ { [%eval 1.96] [%clk 0:01:41] } 57. Ke2 { [%eval 1.86] [%clk 0:06:27] } 57... Ng4 { [%eval 1.66] [%clk 0:01:48] } 58. Be1?! { [%eval 0.76] } { Inaccuracy. Bg5 was best. } { [%clk 0:06:22] } 58... Bd4?? { [%eval 4.54] } { Blunder. Nf6 was best. } { [%clk 0:01:45] } 59. Bxb4 { [%eval 4.48] [%clk 0:06:22] } 59... Ke7 { [%eval 4.62] [%clk 0:01:48] } 60. Bd2 { [%eval 4.38] [%clk 0:06:16] } 60... Bf2 { [%eval 4.77] [%clk 0:01:42] } 61. Bg5+ { [%eval 4.86] [%clk 0:06:20] } 61... Kf7 { [%eval 4.82] [%clk 0:01:51] } 62. Kf3 { [%eval 4.85] [%clk 0:06:25] } 62... Bc5 { [%eval 4.84] [%clk 0:01:51] } 63. a4 { [%eval 4.95] [%clk 0:06:24] } 63... Nh2+ { [%eval 4.97] [%clk 0:01:55] } 64. Ke2 { [%eval 4.96] [%clk 0:06:31] } 64... Ng4 { [%eval 4.94] [%clk 0:02:03] } 65. a5 { [%eval 4.83] [%clk 0:06:35] } 65... Kf8 { [%eval 5.98] [%clk 0:02:03] } 66. a6 { [%eval 5.7] [%clk 0:06:41] } 66... Ba7 { [%eval 6.78] [%clk 0:02:12] } 67. Bd7 { [%eval 6.57] [%clk 0:06:29] } 67... Nh2 { [%eval 6.49] [%clk 0:01:56] } 68. Be3 { [%eval 6.44] [%clk 0:06:34] } 68... Ke7?? { [%eval #25] } { Checkmate is now unavoidable. Bb8 was best. } { [%clk 0:01:58] } 69. Bxa7 { [%eval #49] [%clk 0:06:38] } 69... Kxd7 { [%eval 8.64] [%clk 0:02:06] } 70. Bg1 { [%eval 8.01] [%clk 0:06:46] } 1-0