Event: Round 9: Zihan Cheng - Aleksey Prokhorov
Date: 2023-12-21
White: Zihan Cheng
Black: Aleksey Prokhorov
Result: 0-1
ECO: B20
Opening: Sicilian Defense: Lasker-Dunne Attack
Variant: Standard

1. e4 { [%eval 0.2] [%clk 1:30:58] } 1... c5 { [%eval 0.33] [%clk 1:30:00] } 2. g3 { [%eval 0.0] [%clk 1:31:21] } 2... Nc6 { [%eval 0.0] [%clk 1:29:30] } 3. Bg2 { [%eval 0.0] [%clk 1:31:45] } 3... g6 { [%eval 0.16] [%clk 1:29:00] } 4. Ne2 { [%eval 0.0] [%clk 1:32:10] } 4... Bg7 { [%eval 0.02] [%clk 1:28:30] } 5. c3 { [%eval 0.0] [%clk 1:32:29] } 5... e6 { [%eval 0.23] [%clk 1:27:58] } 6. d4 { [%eval 0.33] [%clk 1:31:36] } 6... cxd4 { [%eval 0.44] [%clk 1:27:25] } 7. cxd4 { [%eval 0.08] [%clk 1:32:01] } 7... d5 { [%eval 0.22] [%clk 1:25:22] } 8. e5 { [%eval 0.17] [%clk 1:32:11] } 8... Nge7 { [%eval 0.47] [%clk 1:23:45] } 9. O-O { [%eval 0.16] [%clk 1:28:11] } 9... Nf5 { [%eval 0.2] [%clk 1:12:26] } 10. Nbc3 { [%eval 0.15] [%clk 1:25:06] } 10... f6 { [%eval 0.16] [%clk 1:03:27] } 11. f4 { [%eval 0.28] [%clk 1:23:22] } 11... a6 { [%eval 0.53] [%clk 0:59:45] } 12. g4 { [%eval 0.25] [%clk 1:15:56] } 12... Nh4 { [%eval 0.35] [%clk 0:54:15] } 13. Bh1 { [%eval 0.25] [%clk 1:13:16] } 13... h5 { [%eval 0.36] [%clk 0:53:18] } 14. h3?! { [%eval -0.22] } { Inaccuracy. g5 was best. } { [%clk 1:01:32] } 14... hxg4 { [%eval -0.22] [%clk 0:52:11] } 15. hxg4 { [%eval -0.3] [%clk 1:01:44] } 15... Qb6? { [%eval 0.9] } { Mistake. g5 was best. } { [%clk 0:51:10] } 16. Rf2 { [%eval 0.64] [%clk 1:00:11] } 16... Bd7 { [%eval 0.92] [%clk 0:32:41] } 17. b4? { [%eval -0.35] } { Mistake. Na4 was best. } { [%clk 0:46:47] } 17... O-O-O?! { [%eval 0.36] } { Inaccuracy. Rc8 was best. } { [%clk 0:31:25] } 18. Na4 { [%eval 0.52] [%clk 0:44:20] } 18... Qa7?! { [%eval 1.1] } { Inaccuracy. Qc7 was best. } { [%clk 0:24:27] } 19. Nc5 { [%eval 1.24] [%clk 0:43:00] } 19... Rdf8 { [%eval 1.46] [%clk 0:18:50] } 20. Nc3? { [%eval 0.0] } { Mistake. Be3 was best. } { [%clk 0:41:50] } 20... b6? { [%eval 1.46] } { Mistake. fxe5 was best. } { [%clk 0:16:52] } 21. Nd3?! { [%eval 0.5] } { Inaccuracy. Nxd7 was best. } { [%clk 0:29:41] } 21... g5 { [%eval 0.65] [%clk 0:16:16] } 22. f5?! { [%eval -0.11] } { Inaccuracy. b5 was best. } { [%clk 0:24:35] } 22... fxe5 { [%eval -0.14] [%clk 0:14:41] } 23. fxe6?? { [%eval -2.04] } { Blunder. dxe5 was best. } { [%clk 0:24:49] } 23... Bxe6 { [%eval -2.19] [%clk 0:14:54] } 24. Nxd5 { [%eval -2.46] [%clk 0:21:05] } 24... e4 { [%eval -2.57] [%clk 0:14:55] } 25. Bxe4 { [%eval -2.58] [%clk 0:20:43] } 25... Bxd4 { [%eval -2.82] [%clk 0:15:14] } 26. Bxg5? { [%eval -4.95] } { Mistake. Qc2 was best. } { [%clk 0:21:00] } 26... Bxd5 { [%eval -5.03] [%clk 0:14:49] } 27. Bxd5 { [%eval -4.96] [%clk 0:21:22] } 27... Qc7 { [%eval -5.21] [%clk 0:14:21] } 28. Kf1 { [%eval -5.65] [%clk 0:17:42] } 28... Bxf2 { [%eval -5.71] [%clk 0:09:32] } 29. Nxf2 { [%eval -5.51] [%clk 0:18:04] } 29... Rxf2+ { [%eval -5.42] [%clk 0:06:07] } 30. Kxf2 { [%eval -5.6] [%clk 0:18:24] } 30... Qh2+ { [%eval -5.57] [%clk 0:06:32] } 31. Ke3 { [%eval -5.5] [%clk 0:18:05] } 31... Qe5+ { [%eval -5.42] [%clk 0:06:57] } 32. Kf2?! { [%eval -8.15] } { Inaccuracy. Kd3 was best. } { [%clk 0:17:48] } 32... Rf8+ { [%eval -9.4] [%clk 0:06:20] } 33. Kg1? { [%eval #-6] } { Checkmate is now unavoidable. Bf3 was best. } { [%clk 0:18:12] } 33... Nf3+?? { [%eval -5.78] } { Lost forced checkmate sequence. Qg3+ was best. } { [%clk 0:05:40] } 34. Qxf3 { [%eval -5.94] [%clk 0:17:35] } 34... Rxf3 { [%eval -5.92] [%clk 0:05:45] } 35. Bxf3 { [%eval -5.95] [%clk 0:18:02] } 35... Qxa1+ { [%eval -6.02] [%clk 0:06:07] } 0-1