Event: Round 8: Marn, Jan - Kovchan, Alexander
Date: 2024-09-05
White: Marn, Jan
WhiteTitle: FM
WhiteElo: 2344
Black: Kovchan, Alexander
BlackTitle: GM
BlackElo: 2455
Result: 0-1
ECO: D85
Opening: Grünfeld Defense: Exchange Variation, Modern Exchange Variation
Variant: Standard

1. d4 { [%eval 0.17] [%clk 1:30:57] } 1... Nf6 { [%eval 0.17] [%clk 1:29:33] } 2. c4 { [%eval 0.17] [%clk 1:31:18] } 2... g6 { [%eval 0.25] [%clk 1:29:33] } 3. Nc3 { [%eval 0.21] [%clk 1:31:42] } 3... d5 { [%eval 0.22] [%clk 1:29:58] } 4. cxd5 { [%eval 0.23] [%clk 1:32:07] } 4... Nxd5 { [%eval 0.24] [%clk 1:30:24] } 5. e4 { [%eval 0.19] [%clk 1:32:32] } 5... Nxc3 { [%eval 0.18] [%clk 1:30:49] } 6. bxc3 { [%eval 0.17] [%clk 1:32:58] } 6... Bg7 { [%eval 0.24] [%clk 1:31:13] } 7. Nf3 { [%eval 0.16] [%clk 1:33:22] } 7... c5 { [%eval 0.26] [%clk 1:31:24] } 8. Bb5+ { [%eval 0.1] [%clk 1:33:45] } 8... Nc6 { [%eval 0.18] [%clk 1:30:26] } 9. O-O { [%eval 0.0] [%clk 1:34:06] } 9... O-O { [%eval 0.08] [%clk 1:29:56] } 10. Bxc6 { [%eval 0.02] [%clk 1:34:30] } 10... bxc6 { [%eval 0.07] [%clk 1:30:20] } 11. Qc2 { [%eval 0.07] [%clk 1:34:47] } 11... Qa5 { [%eval 0.15] [%clk 1:24:17] } 12. Rb1 { [%eval 0.11] [%clk 1:28:09] } 12... Ba6 { [%eval 0.16] [%clk 1:16:21] } 13. Re1 { [%eval 0.11] [%clk 1:27:08] } 13... Rfd8 { [%eval 0.08] [%clk 1:13:47] } 14. Bd2 { [%eval 0.12] [%clk 1:26:10] } 14... Bc4 { [%eval 0.17] [%clk 1:05:55] } 15. Rb7?! { [%eval -0.43] } { Inaccuracy. Qc1 was best. } { [%clk 1:10:02] } 15... Rab8?! { [%eval 0.31] } { Inaccuracy. Qxa2 was best. } { [%clk 0:59:03] } 16. Rxe7 { [%eval -0.19] [%clk 1:07:50] } 16... Bf8 { [%eval -0.16] [%clk 0:58:22] } 17. Bg5 { [%eval -0.18] [%clk 1:07:51] } 17... cxd4 { [%eval 0.04] [%clk 0:54:15] } 18. cxd4 { [%eval 0.0] [%clk 1:08:07] } 18... Rxd4 { [%eval 0.0] [%clk 0:54:15] } 19. Re5 { [%eval -0.12] [%clk 0:59:13] } 19... Bb5 { [%eval 0.02] [%clk 0:49:16] } 20. Qc1 { [%eval -0.31] [%clk 0:51:17] } 20... Rd3 { [%eval -0.33] [%clk 0:42:28] } 21. Bf6 { [%eval -0.29] [%clk 0:34:21] } 21... Ba3 { [%eval -0.04] [%clk 0:38:04] } 22. Qh6 { [%eval -0.38] [%clk 0:30:27] } 22... Bf8 { [%eval -0.32] [%clk 0:38:32] } 23. Qc1 { [%eval -0.35] [%clk 0:30:50] } 23... Qb4 { [%eval 0.0] [%clk 0:29:41] } 24. h4 { [%eval -0.24] [%clk 0:28:47] } 24... Rc3 { [%eval -0.06] [%clk 0:27:18] } 25. Qa1 { [%eval -0.15] [%clk 0:26:47] } 25... Rc2 { [%eval -0.2] [%clk 0:22:52] } 26. Rb1 { [%eval -0.69] [%clk 0:25:49] } 26... Qa3 { [%eval -0.37] [%clk 0:22:11] } 27. Qd4?? { [%eval -5.03] } { Blunder. h5 was best. } { [%clk 0:20:25] } 27... Rc1+ { [%eval -4.9] [%clk 0:22:32] } 0-1