Event: Round 9: Grahn, Vidar - Kogan, Arthur
Date: 2025-06-10
White: Grahn, Vidar
WhiteTitle: FM
WhiteElo: 2201
Black: Kogan, Arthur
BlackTitle: GM
BlackElo: 2455
Result: 0-1
ECO: A56
Opening: Benoni Defense: Czech Benoni Defense
Variant: Standard
TimeControl: 15+10

1. d4 { [%eval 0.17] [%clk 0:15:17] } 1... Nf6 { [%eval 0.19] [%clk 0:15:06] } 2. c4 { [%eval 0.18] [%clk 0:15:26] } 2... c5 { [%eval 0.56] [%clk 0:15:10] } 3. d5 { [%eval 0.47] [%clk 0:15:33] } 3... e5 { [%eval 0.99] [%clk 0:15:15] } 4. Nc3 { [%eval 0.96] [%clk 0:15:19] } 4... d6 { [%eval 0.93] [%clk 0:15:23] } 5. g3 { [%eval 0.83] [%clk 0:15:13] } 5... h5 { [%eval 0.94] [%clk 0:15:21] } 6. Nf3 { [%eval 0.95] [%clk 0:15:04] } 6... Be7 { [%eval 1.24] [%clk 0:15:05] } 7. Bg2 { [%eval 0.83] [%clk 0:15:07] } 7... Nbd7 { [%eval 0.9] [%clk 0:14:33] } 8. e4 { [%eval 1.24] [%clk 0:14:17] } 8... a6 { [%eval 1.27] [%clk 0:14:36] } 9. a4 { [%eval 1.22] [%clk 0:14:19] } 9... Nf8 { [%eval 1.49] [%clk 0:14:34] } 10. Nh4 { [%eval 1.11] [%clk 0:12:50] } 10... g6 { [%eval 1.2] [%clk 0:14:16] } 11. f4?! { [%eval 0.14] } { Inaccuracy. O-O was best. } { [%clk 0:12:02] } 11... exf4 { [%eval 0.21] [%clk 0:14:00] } 12. Bxf4 { [%eval 0.16] [%clk 0:11:50] } 12... Ng4 { [%eval 0.19] [%clk 0:13:10] } 13. Nf3 { [%eval 0.13] [%clk 0:11:14] } 13... g5 { [%eval 0.16] [%clk 0:12:59] } 14. h3?? { [%eval -1.8] } { Blunder. Bd2 was best. } { [%clk 0:10:48] } 14... gxf4 { [%eval -1.83] [%clk 0:12:12] } 15. hxg4 { [%eval -1.9] [%clk 0:10:57] } 15... Bxg4 { [%eval -1.99] [%clk 0:12:01] } 16. gxf4 { [%eval -1.92] [%clk 0:11:02] } 16... Ng6 { [%eval -1.89] [%clk 0:12:04] } 17. Qd2 { [%eval -1.97] [%clk 0:10:50] } 17... Bf6?! { [%eval -1.3] } { Inaccuracy. Bf8 was best. } { [%clk 0:10:08] } 18. O-O-O { [%eval -1.78] [%clk 0:10:01] } 18... Bxf3 { [%eval -1.8] [%clk 0:10:03] } 19. Bxf3 { [%eval -1.62] [%clk 0:10:00] } 19... Nxf4 { [%eval -1.72] [%clk 0:10:09] } 20. Kb1 { [%eval -1.83] [%clk 0:09:47] } 20... Be5 { [%eval -1.6] [%clk 0:10:02] } 21. Ne2?! { [%eval -2.28] } { Inaccuracy. Rdf1 was best. } { [%clk 0:09:42] } 21... Nxe2 { [%eval -2.21] [%clk 0:09:12] } 22. Qxe2 { [%eval -2.18] [%clk 0:09:47] } 22... Qa5 { [%eval -2.21] [%clk 0:09:04] } 23. Bxh5 { [%eval -2.69] [%clk 0:09:00] } 23... O-O-O { [%eval -2.53] [%clk 0:09:07] } 24. Qc2 { [%eval -2.26] [%clk 0:08:21] } 24... b5 { [%eval -2.26] [%clk 0:08:45] } 25. Bxf7? { [%eval -3.86] } { Mistake. Rdf1 was best. } { [%clk 0:05:31] } 25... bxa4 { [%eval -3.6] [%clk 0:08:47] } 26. Be6+ { [%eval -4.45] [%clk 0:05:20] } 26... Kc7 { [%eval -4.04] [%clk 0:08:38] } 27. Rxh8?! { [%eval -5.12] } { Inaccuracy. Ka2 was best. } { [%clk 0:04:28] } 27... Rxh8 { [%eval -4.62] [%clk 0:08:46] } 28. Rf1?! { [%eval -7.7] } { Inaccuracy. Qd2 was best. } { [%clk 0:04:17] } 28... Rh2 { [%eval -7.59] [%clk 0:08:31] } 29. Rf7+ { [%eval -7.79] [%clk 0:04:22] } 29... Kb6 { [%eval -7.32] [%clk 0:08:23] } 30. Bc8? { [%eval #-6] } { Checkmate is now unavoidable. Qxh2 was best. } { [%clk 0:04:27] } 30... Qe1+ { [%eval #-5] [%clk 0:08:28] } 31. Ka2 { [%eval #-5] [%clk 0:04:27] } 31... Re2? { [%eval -8.24] } { Lost forced checkmate sequence. Rxc2 was best. } { [%clk 0:08:28] } 32. Qxe2? { [%eval #-5] } { Checkmate is now unavoidable. Rb7+ was best. } { [%clk 0:04:11] } 0-1