Event: Round 6: Peter Petran - Gerhard Koehler
Date: 2023-09-24
White: Peter Petran
WhiteTitle: IM
WhiteElo: 2195
Black: Gerhard Koehler
BlackElo: 2189
Result: 1/2-1/2
ECO: D78
Opening: Neo-Grünfeld Defense: Classical Variation, Original Defense
Variant: Standard

1. d4 { [%eval 0.0] [%clk 1:30:11] } 1... Nf6 { [%eval 0.28] [%clk 1:30:47] } 2. g3 { [%eval 0.0] [%clk 1:29:52] } 2... d5 { [%eval 0.0] [%clk 1:30:43] } 3. Bg2 { [%eval 0.0] [%clk 1:30:13] } 3... g6 { [%eval 0.15] [%clk 1:30:25] } 4. Nf3 { [%eval 0.12] [%clk 1:30:31] } 4... Bg7 { [%eval 0.25] [%clk 1:30:28] } 5. O-O { [%eval 0.14] [%clk 1:30:42] } 5... O-O { [%eval 0.07] [%clk 1:30:22] } 6. c4 { [%eval 0.11] [%clk 1:31:06] } 6... c6 { [%eval 0.11] [%clk 1:29:14] } 7. b3 { [%eval 0.0] [%clk 1:27:53] } 7... dxc4 { [%eval 0.4] [%clk 1:19:50] } 8. bxc4 { [%eval 0.2] [%clk 1:28:07] } 8... c5 { [%eval 0.26] [%clk 1:19:19] } 9. e3 { [%eval 0.14] [%clk 1:28:17] } 9... Nc6 { [%eval 0.22] [%clk 1:12:58] } 10. Bb2 { [%eval 0.18] [%clk 1:27:53] } 10... Qb6 { [%eval 0.31] [%clk 1:07:22] } 11. Qb3 { [%eval -0.12] [%clk 1:23:24] } 11... Na5 { [%eval -0.14] [%clk 1:02:44] } 12. Qxb6 { [%eval -0.24] [%clk 1:23:23] } 12... axb6 { [%eval -0.26] [%clk 1:03:12] } 13. Nbd2 { [%eval -0.14] [%clk 1:23:40] } 13... Bf5 { [%eval 0.24] [%clk 1:00:54] } 14. Ne5 { [%eval -0.19] [%clk 1:18:04] } 14... Ng4 { [%eval -0.34] [%clk 0:57:35] } 15. Nef3 { [%eval -0.27] [%clk 1:08:32] } 15... Nc6?! { [%eval 0.42] } { Inaccuracy. Rfd8 was best. } { [%clk 0:48:41] } 16. h3 { [%eval 0.03] [%clk 1:04:01] } 16... Nf6 { [%eval 0.0] [%clk 0:46:12] } 17. Ne5 { [%eval -0.02] [%clk 1:00:32] } 17... Nxe5?! { [%eval 0.83] } { Inaccuracy. cxd4 was best. } { [%clk 0:40:58] } 18. dxe5 { [%eval 0.87] [%clk 1:00:54] } 18... Rfd8?! { [%eval 1.99] } { Inaccuracy. Nd7 was best. } { [%clk 0:40:27] } 19. Nb3?? { [%eval -0.22] } { Blunder. exf6 was best. } { [%clk 0:37:10] } 19... Nd7 { [%eval -0.14] [%clk 0:38:51] } 20. f4 { [%eval -0.08] [%clk 0:37:13] } 20... Nf8 { [%eval 0.19] [%clk 0:31:45] } 21. Rfc1 { [%eval -0.04] [%clk 0:34:24] } 21... Ra4 { [%eval -0.12] [%clk 0:30:45] } 22. Bxb7 { [%eval -0.18] [%clk 0:32:32] } 22... Bxh3?! { [%eval 0.42] } { Inaccuracy. Be6 was best. } { [%clk 0:29:13] } 23. Bc6 { [%eval 0.37] [%clk 0:32:49] } 23... Ra7 { [%eval 0.36] [%clk 0:29:13] } 24. a4 { [%eval 0.4] [%clk 0:30:14] } 24... Bg4 { [%eval 0.49] [%clk 0:26:11] } 25. Kf2 { [%eval 0.62] [%clk 0:22:40] } 25... h5 { [%eval 0.48] [%clk 0:25:49] } 26. Bc3 { [%eval 0.6] [%clk 0:20:47] } 26... f6 { [%eval 0.9] [%clk 0:14:49] } 27. exf6 { [%eval 0.46] [%clk 0:19:31] } 27... Bxf6 { [%eval 0.42] [%clk 0:15:06] } 28. Bxf6 { [%eval 0.28] [%clk 0:19:45] } 28... exf6 { [%eval 0.3] [%clk 0:15:02] } 29. Bd5+ { [%eval 0.27] [%clk 0:19:15] } 29... Kg7 { [%eval 0.53] [%clk 0:14:50] } 30. a5 { [%eval 0.59] [%clk 0:17:33] } 30... bxa5 { [%eval 0.57] [%clk 0:15:02] } 31. Rxa5 { [%eval 0.28] [%clk 0:17:18] } 31... Rxa5 { [%eval 0.23] [%clk 0:15:22] } 32. Nxa5 { [%eval 0.28] [%clk 0:17:45] } 32... Nd7 { [%eval 0.41] [%clk 0:09:58] } 33. Rb1 { [%eval 0.08] [%clk 0:16:53] } 33... Rb8 { [%eval 0.15] [%clk 0:10:17] } 34. Rb7 { [%eval 0.0] [%clk 0:15:28] } 34... Rxb7 { [%eval 0.0] [%clk 0:10:23] } 35. Nxb7 { [%eval 0.0] [%clk 0:15:50] } 35... Kf8 { [%eval 0.0] [%clk 0:09:19] } 36. e4 { [%eval 0.0] [%clk 0:12:31] } 36... Ke7 { [%eval 0.0] [%clk 0:07:09] } 37. Ke3 { [%eval 0.0] } 1/2-1/2