Event: Round 9: Bigabylov, Zhuban - Igambergenov, Alibek
Date: 2025-03-17
White: Bigabylov, Zhuban
WhiteTitle: FM
WhiteElo: 1959
Black: Igambergenov, Alibek
BlackTitle: IM
BlackElo: 2331
Result: 0-1
ECO: A57
Opening: Benko Gambit Accepted: Modern Variation
Variant: Standard
TimeControl: 90+30

1. d4 { [%eval 0.17] [%clk 1:23:25] } 1... Nf6 { [%eval 0.19] [%clk 1:30:49] } 2. c4 { [%eval 0.18] [%clk 1:23:46] } 2... c5 { [%eval 0.56] [%clk 1:31:15] } 3. d5 { [%eval 0.47] [%clk 1:23:59] } 3... b5 { [%eval 0.53] [%clk 1:31:41] } 4. cxb5 { [%eval 0.47] [%clk 1:24:20] } 4... a6 { [%eval 0.6] [%clk 1:32:08] } 5. e3 { [%eval 0.42] [%clk 1:24:41] } 5... axb5 { [%eval 0.58] [%clk 1:32:34] } 6. Bxb5 { [%eval 0.5] [%clk 1:24:56] } 6... Qa5+ { [%eval 0.48] [%clk 1:33:00] } 7. Nc3 { [%eval 0.41] [%clk 1:25:10] } 7... Bb7 { [%eval 0.43] [%clk 1:33:26] } 8. Bc4 { [%eval 0.16] [%clk 1:18:34] } 8... e6 { [%eval 0.17] [%clk 1:31:26] } 9. Bd2 { [%eval 0.01] [%clk 1:17:16] } 9... Qb6 { [%eval 0.02] [%clk 1:31:26] } 10. Qf3 { [%eval 0.01] [%clk 1:13:10] } 10... exd5 { [%eval 0.02] [%clk 1:23:13] } 11. Bxd5 { [%eval 0.02] [%clk 1:05:39] } 11... Nxd5 { [%eval 0.04] [%clk 1:22:59] } 12. Nxd5 { [%eval 0.0] [%clk 1:05:44] } 12... Bxd5 { [%eval -0.03] [%clk 1:14:14] } 13. Qxd5 { [%eval -0.1] [%clk 1:06:02] } 13... Qxb2 { [%eval -0.01] [%clk 1:14:40] } 14. Qe4+ { [%eval -0.21] [%clk 1:00:29] } 14... Be7 { [%eval -0.26] [%clk 1:14:28] } 15. Rb1?! { [%eval -0.92] } { Inaccuracy. Rd1 was best. } { [%clk 1:00:50] } 15... Qxa2 { [%eval -0.9] [%clk 0:57:33] } 16. Ne2 { [%eval -0.9] [%clk 0:40:21] } 16... Nc6 { [%eval -0.92] [%clk 0:53:31] } 17. Nc3 { [%eval -1.21] [%clk 0:32:40] } 17... Qe6 { [%eval -1.24] [%clk 0:53:23] } 18. Qf3 { [%eval -1.45] [%clk 0:31:02] } 18... O-O { [%eval -1.38] [%clk 0:53:40] } 19. O-O { [%eval -1.17] [%clk 0:30:58] } 19... Nb4 { [%eval -0.89] [%clk 0:40:46] } 20. e4 { [%eval -1.23] [%clk 0:27:52] } 20... Bf6 { [%eval -1.21] [%clk 0:37:31] } 21. Ne2 { [%eval -1.21] [%clk 0:24:39] } 21... Nc6 { [%eval -1.03] [%clk 0:32:27] } 22. Nf4 { [%eval -1.09] [%clk 0:24:14] } 22... Qa2 { [%eval -0.67] [%clk 0:31:06] } 23. Be3 { [%eval -0.67] [%clk 0:22:15] } 23... Bd4 { [%eval -0.65] [%clk 0:27:59] } 24. Nd5 { [%eval -0.54] [%clk 0:19:43] } 24... Rae8 { [%eval -0.68] [%clk 0:26:59] } 25. Bf4? { [%eval -2.4] } { Mistake. Rb7 was best. } { [%clk 0:17:49] } 25... f5 { [%eval -2.3] [%clk 0:25:59] } 26. exf5 { [%eval -2.38] [%clk 0:11:34] } 26... Rxf5 { [%eval -2.24] [%clk 0:26:00] } 27. Ne3 { [%eval -2.14] [%clk 0:11:56] } 27... Rf7 { [%eval -2.16] [%clk 0:23:59] } 28. Qg3? { [%eval -3.64] } { Mistake. Qg4 was best. } { [%clk 0:11:04] } 28... Re4 { [%eval -3.6] [%clk 0:21:37] } 29. Bd6 { [%eval -3.67] [%clk 0:09:48] } 29... h6 { [%eval -3.49] [%clk 0:21:33] } 30. Rbc1 { [%eval -4.14] [%clk 0:09:03] } 30... Qb2?? { [%eval -0.13] } { Blunder. Rxf2 was best. } { [%clk 0:11:55] } 31. Ng4? { [%eval -1.73] } { Mistake. Bxc5 was best. } { [%clk 0:07:54] } 31... Kh8 { [%eval -1.74] [%clk 0:09:47] } 32. Bxc5?! { [%eval -2.77] } { Inaccuracy. Kh1 was best. } { [%clk 0:07:53] } 32... Bxc5 { [%eval -2.74] [%clk 0:10:01] } 33. Rxc5 { [%eval -2.72] [%clk 0:08:10] } 33... Qd4 { [%eval -2.72] [%clk 0:10:21] } 34. Nxh6 { [%eval -3.13] [%clk 0:05:34] } 34... gxh6 { [%eval -3.08] [%clk 0:10:40] } 35. Rh5 { [%eval -3.4] [%clk 0:05:54] } 35... Re6 { [%eval -3.21] [%clk 0:10:24] } 36. Rh4 { [%eval -3.1] [%clk 0:04:36] } 36... Qe5 { [%eval -2.74] [%clk 0:09:54] } 37. Qh3 { [%eval -3.37] [%clk 0:03:32] } 37... Kh7 { [%eval -3.28] [%clk 0:09:54] } 38. Ra4 { [%eval -3.59] [%clk 0:02:05] } 38... Qe2 { [%eval -3.43] [%clk 0:08:30] } 39. Qc3?! { [%eval -4.45] } { Inaccuracy. Qh4 was best. } { [%clk 0:01:31] } 39... Ne5 { [%eval -4.39] [%clk 0:08:21] } 40. f3?? { [%eval #-17] } { Checkmate is now unavoidable. Ra3 was best. } { [%clk 0:00:54] } 40... Rg6?? { [%eval -5.34] } { Lost forced checkmate sequence. Nxf3+ was best. } { [%clk 0:08:06] } 41. g3?? { [%eval #-9] } { Checkmate is now unavoidable. Rf2 was best. } { [%clk 0:00:31] } 41... Nxf3+ { [%eval #-8] [%clk 0:08:03] } 0-1