Event: 32nd Annual Chicago Open
Date: 2023-05-29
White: Jianchao Zhou
WhiteTitle: GM
Black: Dimitar Mardov
BlackTitle: IM
Result: 1-0
ECO: E39
Opening: Nimzo-Indian Defense: Classical Variation, Berlin Variation, Macieja System
Variant: Standard
TimeControl: 40/80,SD/30;d30

1. d4 { [%eval 0.0] [%clk 1:17:32] } 1... Nf6 { [%eval 0.28] [%clk 1:20:00] } 2. c4 { [%eval 0.16] [%clk 1:17:32] } 2... e6 { [%eval 0.23] [%clk 1:19:36] } 3. Nc3 { [%eval 0.05] [%clk 1:17:32] } 3... Bb4 { [%eval 0.25] [%clk 1:17:50] } 4. Qc2 { [%eval 0.0] [%clk 1:17:32] } 4... c5 { [%eval 0.23] [%clk 1:14:59] } 5. dxc5 { [%eval 0.21] [%clk 1:17:32] } 5... O-O { [%eval 0.22] [%clk 1:14:34] } 6. a3 { [%eval 0.25] [%clk 1:17:32] } 6... Bxc5 { [%eval 0.16] [%clk 1:13:56] } 7. Nf3 { [%eval 0.15] [%clk 1:17:32] } 7... b6 { [%eval 0.44] [%clk 1:13:07] } 8. Bf4 { [%eval 0.51] [%clk 1:15:56] } 8... Bb7 { [%eval 0.45] [%clk 1:12:38] } 9. Rd1 { [%eval 0.39] [%clk 1:14:37] } 9... Nh5 { [%eval 0.52] [%clk 1:03:22] } 10. Bc1 { [%eval 0.59] [%clk 1:13:36] } 10... Be7 { [%eval 0.68] [%clk 0:55:34] } 11. e4 { [%eval 0.69] [%clk 1:10:39] } 11... f5?! { [%eval 1.29] } { Inaccuracy. Nc6 was best. } { [%clk 0:51:43] } 12. exf5 { [%eval 1.28] [%clk 1:07:43] } 12... Bxf3 { [%eval 1.64] [%clk 0:44:53] } 13. gxf3 { [%eval 1.63] [%clk 1:07:43] } 13... Nc6 { [%eval 1.59] [%clk 0:42:16] } 14. fxe6 { [%eval 1.81] [%clk 1:04:04] } 14... Bc5 { [%eval 1.87] [%clk 0:39:33] } 15. Rxd7 { [%eval 2.18] [%clk 1:01:16] } 15... Qf6 { [%eval 2.05] [%clk 0:33:09] } 16. Qe4 { [%eval 2.13] [%clk 1:00:18] } 16... Ne5?! { [%eval 3.17] } { Inaccuracy. Rae8 was best. } { [%clk 0:29:05] } 17. Bh3?! { [%eval 2.22] } { Inaccuracy. Rd5 was best. } { [%clk 0:54:13] } 17... Nxd7?! { [%eval 3.39] } { Inaccuracy. Rae8 was best. } { [%clk 0:17:44] } 18. exd7 { [%eval 3.5] [%clk 0:49:36] } 18... Qd4?! { [%eval 4.43] } { Inaccuracy. Kh8 was best. } { [%clk 0:14:43] } 19. Qd5+ { [%eval 3.98] [%clk 0:44:09] } 19... Qxd5 { [%eval 3.9] [%clk 0:13:39] } 20. Nxd5 { [%eval 3.81] [%clk 0:40:11] } 20... Rad8 { [%eval 4.23] [%clk 0:09:23] } 21. Bg5 { [%eval 4.25] [%clk 0:40:07] } 21... Nf6 { [%eval 4.04] [%clk 0:08:45] } 22. Nxf6+ { [%eval 3.57] [%clk 0:33:23] } 22... gxf6 { [%eval 3.46] [%clk 0:08:45] } 23. Bh6 { [%eval 3.68] [%clk 0:33:23] } 23... Rf7 { [%eval 3.49] [%clk 0:08:38] } 24. Be6 { [%eval 3.65] [%clk 0:33:23] } 24... Kh8? { [%eval 6.15] } { Mistake. Rxd7 was best. } { [%clk 0:08:38] } 25. Bxf7 { [%eval 6.15] [%clk 0:29:16] } 25... Bd6?? { [%eval #3] } { Checkmate is now unavoidable. Rxd7 was best. } { [%clk 0:05:58] } 26. Bf4?? { [%eval 4.37] } { Lost forced checkmate sequence. Rg1 was best. } { [%clk 0:23:19] } 26... Bxf4 { [%eval 4.6] [%clk 0:03:31] } 27. a4?? { [%eval 0.41] } { Blunder. Be6 was best. } { [%clk 0:18:46] } 27... Rc8?? { [%eval #5] } { Checkmate is now unavoidable. Rxd7 was best. } { [%clk 0:02:23] } 28. c5?? { [%eval 5.4] } { Lost forced checkmate sequence. dxc8=Q+ was best. } { [%clk 0:14:33] } 28... bxc5?? { [%eval #5] } { Checkmate is now unavoidable. Rd8 was best. } { [%clk 0:14:33] } 29. Rg1?? { [%eval 3.6] } { Lost forced checkmate sequence. dxc8=Q+ was best. } { [%clk 0:02:10] } 29... Rc6?? { [%eval #1] } { Checkmate is now unavoidable. Rd8 was best. } { [%clk 0:14:33] } 1-0