Event: Grenke Chess Open 2024
Site: Karlsruhe, Germany
Date: 2024-03-28
White: Koellner, Aaron Noah
WhiteTitle: CM
WhiteElo: 2104
Black: Gharibyan, Mamikon
BlackTitle: GM
BlackElo: 2493
Result: 0-1
ECO: D04
Opening: Queen's Pawn Game: Colle System
Variant: Standard
TimeControl: 90min 40 moves + 15 min Rest + 30 sec per move

1. d4 { [%eval 0.17] [%clk 1:30:57] } 1... d5 { [%eval 0.25] [%clk 1:30:49] } 2. Nf3 { [%eval 0.1] [%clk 1:31:23] } 2... Nf6 { [%eval 0.24] [%clk 1:31:01] } 3. e3 { [%eval 0.0] [%clk 1:31:25] } 3... c5 { [%eval 0.15] [%clk 1:30:25] } 4. Nbd2 { [%eval 0.0] [%clk 1:31:39] } 4... Nc6 { [%eval 0.08] [%clk 1:26:45] } 5. dxc5 { [%eval 0.25] [%clk 1:32:05] } 5... e6 { [%eval 0.0] [%clk 1:25:04] } 6. a3 { [%eval 0.0] [%clk 1:32:29] } 6... a5 { [%eval 0.0] [%clk 1:24:51] } 7. b3 { [%eval 0.0] [%clk 1:32:53] } 7... Bxc5 { [%eval 0.0] [%clk 1:24:05] } 8. Bb2 { [%eval 0.04] [%clk 1:33:15] } 8... O-O { [%eval -0.08] [%clk 1:21:03] } 9. Bd3 { [%eval -0.27] [%clk 1:31:29] } 9... Re8 { [%eval -0.16] [%clk 1:18:46] } 10. c4 { [%eval -0.23] [%clk 1:30:59] } 10... d4 { [%eval -0.24] [%clk 1:15:14] } 11. exd4 { [%eval -0.23] [%clk 1:30:18] } 11... e5 { [%eval -0.19] [%clk 1:09:35] } 12. O-O { [%eval -0.12] [%clk 1:10:59] } 12... Nxd4 { [%eval -0.16] [%clk 0:58:03] } 13. b4 { [%eval -0.18] [%clk 0:49:10] } 13... axb4 { [%eval -0.2] [%clk 0:54:08] } 14. axb4 { [%eval -0.3] [%clk 0:49:31] } 14... Rxa1 { [%eval -0.28] [%clk 0:53:00] } 15. Bxa1 { [%eval -0.58] [%clk 0:49:53] } 15... Bxb4 { [%eval -0.68] [%clk 0:50:54] } 16. Nxe5 { [%eval -0.8] [%clk 0:41:25] } 16... Rxe5 { [%eval -0.64] [%clk 0:40:52] } 17. Nb3 { [%eval -0.72] [%clk 0:41:44] } 17... Rg5 { [%eval -0.81] [%clk 0:11:59] } 18. h4?? { [%eval -2.71] } { Blunder. Bxd4 was best. } { [%clk 0:30:09] } 18... Bg4 { [%eval -2.57] [%clk 0:06:39] } 19. Qb1?? { [%eval -6.48] } { Blunder. hxg5 was best. } { [%clk 0:20:38] } 19... Nf3+ { [%eval -6.2] [%clk 0:04:35] } 20. gxf3 { [%eval -6.37] [%clk 0:19:48] } 20... Bxf3+ { [%eval -6.55] [%clk 0:04:40] } 21. hxg5 { [%eval -6.35] [%clk 0:19:52] } 21... Ne4 { [%eval -6.22] [%clk 0:04:54] } 22. Be5?? { [%eval #-4] } { Checkmate is now unavoidable. Qc1 was best. } { [%clk 0:05:33] } 22... Qxg5+ { [%eval #-3] [%clk 0:05:02] } 23. Bg3 { [%eval #-3] [%clk 0:05:59] } 23... Qh5 { [%eval #-2] [%clk 0:04:44] } 24. Bh2 { [%eval #-2] [%clk 0:05:43] } 24... Qh3 { [%eval #-1] [%clk 0:04:58] } 0-1