Event: Biel Chess Festival 2025
Date: 2025-07-19
White: Ernst, Heinz
WhiteElo: 1790
Black: Christoffersen, Odd
BlackElo: 1728
Result: 1-0
ECO: D31
Opening: Semi-Slav Defense: Noteboom Variation, Abrahams Variation
Variant: Standard

1. d4 { [%eval 0.17] [%clk 1:30:55] } 1... d5 { [%eval 0.2] [%clk 1:30:49] } 2. c4 { [%eval 0.18] [%clk 1:31:08] } 2... e6 { [%eval 0.17] [%clk 1:31:08] } 3. Nc3 { [%eval 0.18] [%clk 1:31:24] } 3... c6 { [%eval 0.26] [%clk 1:31:28] } 4. Nf3 { [%eval 0.18] [%clk 1:31:17] } 4... dxc4 { [%eval 0.29] [%clk 1:29:54] } 5. e3 { [%eval 0.14] [%clk 1:31:07] } 5... b5 { [%eval 0.33] [%clk 1:30:09] } 6. a4 { [%eval 0.25] [%clk 1:29:48] } 6... Bb4 { [%eval 0.34] [%clk 1:30:14] } 7. axb5 { [%eval 0.0] [%clk 1:27:31] } 7... Bxc3+ { [%eval 0.07] [%clk 1:26:35] } 8. bxc3 { [%eval 0.24] [%clk 1:27:35] } 8... cxb5 { [%eval 0.14] [%clk 1:26:44] } 9. Be2 { [%eval -0.26] [%clk 1:25:44] } 9... Nd7?! { [%eval 0.3] } { Inaccuracy. Ne7 was best. } { [%clk 1:25:02] } 10. O-O?! { [%eval -0.26] } { Inaccuracy. d5 was best. } { [%clk 1:23:46] } 10... Ne7 { [%eval -0.35] [%clk 1:24:11] } 11. Qc2 { [%eval -0.8] [%clk 1:15:46] } 11... Qc7 { [%eval -0.52] [%clk 1:20:00] } 12. Ba3 { [%eval -0.44] [%clk 1:13:58] } 12... Bb7 { [%eval -0.45] [%clk 1:19:25] } 13. Rfb1 { [%eval -0.63] [%clk 1:09:15] } 13... a6 { [%eval -0.52] [%clk 1:16:44] } 14. Ng5 { [%eval -0.98] [%clk 1:06:16] } 14... Nf6 { [%eval -1.13] [%clk 1:14:53] } 15. f3 { [%eval -1.17] [%clk 1:01:12] } 15... h6 { [%eval -0.95] [%clk 1:08:22] } 16. Ne4 { [%eval -1.2] [%clk 1:00:14] } 16... Nxe4 { [%eval -1.16] [%clk 1:08:22] } 17. fxe4 { [%eval -1.21] [%clk 1:00:29] } 17... Rd8? { [%eval 0.0] } { Mistake. O-O was best. } { [%clk 1:02:51] } 18. Bf3 { [%eval -0.48] [%clk 0:56:55] } 18... O-O { [%eval -0.65] [%clk 1:02:32] } 19. e5 { [%eval -0.85] [%clk 0:54:10] } 19... Rfe8?! { [%eval -0.1] } { Inaccuracy. Bxf3 was best. } { [%clk 1:01:30] } 20. Bb4?! { [%eval -1.14] } { Inaccuracy. e4 was best. } { [%clk 0:47:36] } 20... Ra8?! { [%eval -0.37] } { Inaccuracy. Bxf3 was best. } { [%clk 0:59:09] } 21. Ra3?? { [%eval -2.35] } { Blunder. e4 was best. } { [%clk 0:44:27] } 21... Bxf3 { [%eval -2.4] [%clk 0:51:33] } 22. gxf3 { [%eval -2.41] [%clk 0:44:33] } 22... Qb7?! { [%eval -1.27] } { Inaccuracy. Nd5 was best. } { [%clk 0:51:40] } 23. e4?! { [%eval -2.09] } { Inaccuracy. Bxe7 was best. } { [%clk 0:36:51] } 23... Nc8? { [%eval -0.57] } { Mistake. Ng6 was best. } { [%clk 0:48:18] } 24. Ba5? { [%eval -1.87] } { Mistake. Qa2 was best. } { [%clk 0:32:38] } 24... Re7? { [%eval -0.61] } { Mistake. Ne7 was best. } { [%clk 0:44:23] } 25. Rba1 { [%eval -1.1] [%clk 0:26:52] } 25... Nb6?! { [%eval -0.1] } { Inaccuracy. Re8 was best. } { [%clk 0:39:42] } 26. Qb2?! { [%eval -1.04] } { Inaccuracy. Kh1 was best. } { [%clk 0:22:52] } 26... Na4 { [%eval -0.81] [%clk 0:37:45] } 27. Qb4?! { [%eval -1.81] } { Inaccuracy. Qg2 was best. } { [%clk 0:22:43] } 27... Rc8?! { [%eval -1.0] } { Inaccuracy. Rd7 was best. } { [%clk 0:34:59] } 28. Rb1 { [%eval -0.94] [%clk 0:21:30] } 28... Qd7 { [%eval -1.15] [%clk 0:33:56] } 29. Ra2 { [%eval -1.1] [%clk 0:17:53] } 29... Ree8? { [%eval 0.08] } { Mistake. f6 was best. } { [%clk 0:31:05] } 30. Kg2?! { [%eval -0.92] } { Inaccuracy. Rg2 was best. } { [%clk 0:06:26] } 30... Qe7?! { [%eval -0.15] } { Inaccuracy. f5 was best. } { [%clk 0:25:45] } 31. Rd1?! { [%eval -0.75] } { Inaccuracy. Qxe7 was best. } { [%clk 0:06:33] } 31... f6?! { [%eval -0.12] } { Inaccuracy. Qg5+ was best. } { [%clk 0:21:53] } 32. f4?? { [%eval -1.99] } { Blunder. Qxe7 was best. } { [%clk 0:05:56] } 32... fxe5?? { [%eval -0.22] } { Blunder. Qf7 was best. } { [%clk 0:19:57] } 1-0