Event: Round 8: Steven C Zierk - Koustav Chatterjee
Date: 2023-12-30
White: Steven C Zierk
WhiteTitle: GM
Black: Koustav Chatterjee
BlackTitle: GM
Result: 0-1
ECO: A07
Opening: King's Indian Attack
Variant: Standard

1. Nf3 { [%eval 0.2] [%clk 1:30:00] } 1... d5 { [%eval 0.34] [%clk 1:26:06] } 2. g3 { [%eval 0.12] [%clk 1:30:00] } 2... Nd7 { [%eval 0.4] [%clk 1:25:01] } 3. Bg2 { [%eval 0.0] [%clk 1:27:14] } 3... e5 { [%eval 0.24] [%clk 1:24:57] } 4. d3 { [%eval 0.05] [%clk 1:25:24] } 4... Ngf6 { [%eval 0.16] [%clk 1:24:44] } 5. O-O { [%eval 0.0] [%clk 1:21:48] } 5... Bd6 { [%eval 0.16] [%clk 1:22:46] } 6. c4 { [%eval 0.22] [%clk 1:15:05] } 6... c6 { [%eval 0.21] [%clk 1:20:10] } 7. cxd5 { [%eval 0.12] [%clk 1:12:02] } 7... cxd5 { [%eval 0.06] [%clk 1:20:10] } 8. Nc3 { [%eval -0.01] [%clk 1:12:02] } 8... O-O { [%eval 0.0] [%clk 1:15:56] } 9. Nd2 { [%eval -0.26] [%clk 1:11:15] } 9... Nb6 { [%eval -0.26] [%clk 1:12:37] } 10. a4 { [%eval -0.24] [%clk 1:10:26] } 10... Be6 { [%eval -0.2] [%clk 0:59:51] } 11. d4 { [%eval -0.23] [%clk 1:00:52] } 11... e4 { [%eval -0.2] [%clk 0:47:36] } 12. a5 { [%eval -0.25] [%clk 0:57:18] } 12... Nbd7 { [%eval -0.25] [%clk 0:44:42] } 13. f3 { [%eval -0.21] [%clk 0:54:12] } 13... exf3 { [%eval -0.25] [%clk 0:44:42] } 14. exf3 { [%eval -0.29] [%clk 0:53:48] } 14... Re8 { [%eval -0.4] [%clk 0:33:20] } 15. Re1 { [%eval -0.49] [%clk 0:52:34] } 15... a6 { [%eval -0.35] [%clk 0:30:01] } 16. Nf1 { [%eval -0.57] [%clk 0:43:53] } 16... Nb8 { [%eval -0.2] [%clk 0:28:07] } 17. Bg5 { [%eval -0.26] [%clk 0:36:49] } 17... Nc6 { [%eval -0.23] [%clk 0:28:07] } 18. f4 { [%eval -0.1] [%clk 0:34:44] } 18... h6 { [%eval -0.06] [%clk 0:27:16] } 19. Bh4 { [%eval -0.24] [%clk 0:33:14] } 19... Be7 { [%eval -0.18] [%clk 0:20:43] } 20. Ne3 { [%eval -0.27] [%clk 0:27:13] } 20... Qd7 { [%eval 0.24] [%clk 0:19:23] } 21. Na4 { [%eval 0.39] [%clk 0:25:08] } 21... Qd6 { [%eval 0.19] [%clk 0:18:24] } 22. f5 { [%eval 0.33] [%clk 0:20:53] } 22... Bd7 { [%eval 0.39] [%clk 0:17:10] } 23. Nc5 { [%eval 0.25] [%clk 0:20:18] } 23... Qc7 { [%eval 0.29] [%clk 0:08:46] } 24. Bxd5 { [%eval 0.14] [%clk 0:19:14] } 24... Rad8 { [%eval 0.4] [%clk 0:07:37] } 25. Rc1 { [%eval 0.41] [%clk 0:14:09] } 25... Bc8 { [%eval 0.57] [%clk 0:07:37] } 26. Bxf6 { [%eval 0.41] [%clk 0:09:26] } 26... Bxf6 { [%eval 0.5] [%clk 0:07:37] } 27. Ne4 { [%eval 0.38] [%clk 0:09:26] } 27... Qe7 { [%eval 0.35] [%clk 0:05:54] } 28. Kg2?? { [%eval -2.6] } { Blunder. Rc4 was best. } { [%clk 0:05:23] } 28... Bxd4 { [%eval -2.56] [%clk 0:05:50] } 29. Rxc6?! { [%eval -4.04] } { Inaccuracy. g4 was best. } { [%clk 0:02:42] } 29... bxc6 { [%eval -4.0] [%clk 0:05:50] } 30. Qxd4 { [%eval -4.04] [%clk 0:02:42] } 30... cxd5 { [%eval -4.1] [%clk 0:05:50] } 31. Nxd5 { [%eval -4.26] [%clk 0:02:20] } 31... Qb7?! { [%eval -2.73] } { Inaccuracy. Rxd5 was best. } { [%clk 0:04:50] } 32. Nef6+ { [%eval -2.5] [%clk 0:00:23] } 32... gxf6 { [%eval -2.65] [%clk 0:04:50] } 33. Rxe8+ { [%eval -2.29] [%clk 0:00:23] } 33... Rxe8 { [%eval -2.53] [%clk 0:04:50] } 34. Kf2?! { [%eval -3.43] } { Inaccuracy. Kg1 was best. } { [%clk 0:00:23] } 34... Bxf5 { [%eval -3.57] [%clk 0:03:13] } 35. Nxf6+ { [%eval -3.18] [%clk 0:00:23] } 35... Kf8 { [%eval -3.48] [%clk 0:03:13] } 36. Nd5?! { [%eval -4.67] } { Inaccuracy. Nxe8 was best. } { [%clk 0:00:23] } 36... Kg8?! { [%eval -3.41] } { Inaccuracy. f6 was best. } { [%clk 0:02:59] } 37. Nf6+ { [%eval -3.58] [%clk 0:00:23] } 37... Kf8 { [%eval -3.56] [%clk 0:02:59] } 38. Nd5?! { [%eval -4.46] } { Inaccuracy. Nxe8 was best. } { [%clk 0:00:23] } 38... f6 { [%eval -4.62] [%clk 0:01:50] } 39. Nxf6 { [%eval -4.88] [%clk 0:00:03] } 39... Rb8 { [%eval -5.42] [%clk 0:01:43] } 40. Qc5+ { [%eval -5.45] [%clk 0:00:01] } 40... Kf7 { [%eval -5.02] [%clk 0:01:22] } 41. Qxf5 { [%eval -6.29] [%clk 0:29:42] } 41... Qxb2+ { [%eval -6.43] [%clk 0:31:22] } 42. Kg1 { [%eval -7.51] [%clk 0:29:42] } 42... Qb1+ { [%eval -7.3] [%clk 0:31:22] } 0-1