Event: Schachbundesliga
Site: Deggendorf, Germany
Date: 2025-04-27
White: Boensch, Uwe
WhiteTitle: GM
WhiteElo: 2465
Black: Costa, Leonardo
BlackTitle: IM
BlackElo: 2510
Result: 0-1
ECO: D45
Opening: Semi-Slav Defense: Accelerated Meran Variation
Variant: Standard

1. d4 { [%eval 0.17] [%clk 1:30:55] } 1... d5 { [%eval 0.2] [%clk 1:30:57] } 2. c4 { [%eval 0.26] [%clk 1:31:03] } 2... e6 { [%eval 0.27] [%clk 1:31:24] } 3. Nf3 { [%eval 0.16] [%clk 1:29:55] } 3... Nf6 { [%eval 0.17] [%clk 1:31:50] } 4. Nc3 { [%eval 0.1] [%clk 1:29:16] } 4... c6 { [%eval 0.12] [%clk 1:30:36] } 5. e3 { [%eval 0.13] [%clk 1:29:24] } 5... a6 { [%eval 0.32] [%clk 1:30:57] } 6. Ne5 { [%eval 0.1] [%clk 1:21:07] } 6... Nbd7 { [%eval 0.15] [%clk 1:31:22] } 7. f4 { [%eval -0.01] [%clk 1:20:01] } 7... Bb4 { [%eval 0.0] [%clk 1:31:49] } 8. Bd3 { [%eval -0.04] [%clk 1:16:22] } 8... O-O?! { [%eval 0.62] } { Inaccuracy. dxc4 was best. } { [%clk 1:32:13] } 9. O-O?! { [%eval -0.02] } { Inaccuracy. c5 was best. } { [%clk 1:16:05] } 9... dxc4 { [%eval 0.16] [%clk 1:31:58] } 10. Bxc4 { [%eval 0.02] [%clk 1:15:53] } 10... c5 { [%eval 0.18] [%clk 1:32:24] } 11. a3 { [%eval -0.2] [%clk 1:14:04] } 11... Bxc3 { [%eval -0.29] [%clk 1:06:06] } 12. bxc3 { [%eval -0.32] [%clk 1:13:54] } 12... b5 { [%eval -0.38] [%clk 1:06:33] } 13. Qf3 { [%eval -0.7] [%clk 1:06:33] } 13... Qc7 { [%eval -0.75] [%clk 1:07:00] } 14. Nxd7 { [%eval -0.65] [%clk 1:00:01] } 14... Bxd7 { [%eval -0.67] [%clk 1:03:37] } 15. Bd3 { [%eval -0.74] [%clk 0:59:45] } 15... cxd4 { [%eval -0.82] [%clk 1:00:14] } 16. exd4 { [%eval -0.66] [%clk 0:59:37] } 16... Bc6 { [%eval -0.71] [%clk 0:53:52] } 17. Qe2 { [%eval -0.78] [%clk 0:58:33] } 17... Rfe8 { [%eval -0.57] [%clk 0:54:18] } 18. Bd2 { [%eval -0.57] [%clk 0:58:08] } 18... Rac8 { [%eval -0.37] [%clk 0:51:39] } 19. Rfe1 { [%eval -0.54] [%clk 0:52:32] } 19... Nd5 { [%eval -0.34] [%clk 0:42:15] } 20. Qe5 { [%eval -0.41] [%clk 0:43:18] } 20... Bb7 { [%eval -0.18] [%clk 0:32:58] } 21. Qh5?! { [%eval -1.02] } { Inaccuracy. f5 was best. } { [%clk 0:38:57] } 21... g6 { [%eval -0.82] [%clk 0:32:55] } 22. Qh4 { [%eval -0.9] [%clk 0:34:12] } 22... Nxc3?! { [%eval 0.0] } { Inaccuracy. Qd6 was best. } { [%clk 0:20:12] } 23. Rac1 { [%eval -0.03] [%clk 0:32:09] } 23... Qd6 { [%eval -0.09] [%clk 0:20:14] } 24. f5 { [%eval 0.0] [%clk 0:23:55] } 24... Nd5 { [%eval 0.0] [%clk 0:20:40] } 25. fxg6 { [%eval -0.12] [%clk 0:19:46] } 25... hxg6 { [%eval -0.19] [%clk 0:18:57] } 26. Re5?! { [%eval -0.86] } { Inaccuracy. Rf1 was best. } { [%clk 0:18:36] } 26... Rxc1+ { [%eval -0.94] [%clk 0:07:31] } 27. Bxc1 { [%eval -0.96] [%clk 0:18:57] } 27... Qc6?! { [%eval -0.26] } { Inaccuracy. Rc8 was best. } { [%clk 0:06:39] } 28. Qg5 { [%eval -0.51] [%clk 0:17:50] } 28... Rc8 { [%eval -0.3] [%clk 0:04:28] } 29. Bb2 { [%eval -0.66] [%clk 0:12:48] } 29... Qe8 { [%eval -0.54] [%clk 0:01:22] } 30. Qg3 { [%eval -0.92] [%clk 0:11:21] } 30... b4?! { [%eval -0.1] } { Inaccuracy. Kf8 was best. } { [%clk 0:00:41] } 31. axb4 { [%eval -0.06] [%clk 0:08:07] } 31... Kf8 { [%eval 0.03] [%clk 0:01:04] } 32. h4 { [%eval 0.03] [%clk 0:06:32] } 32... Qa4 { [%eval 0.42] [%clk 0:01:28] } 33. Be4?! { [%eval -0.28] } { Inaccuracy. Re2 was best. } { [%clk 0:05:23] } 33... Qd1+ { [%eval -0.36] [%clk 0:00:57] } 34. Kh2 { [%eval -0.47] [%clk 0:05:52] } 34... Qd2 { [%eval -0.48] [%clk 0:00:54] } 35. Rxe6?? { [%eval -3.75] } { Blunder. Rg5 was best. } { [%clk 0:03:32] } 35... fxe6 { [%eval -3.81] [%clk 0:00:49] } 36. Qd6+ { [%eval -4.07] [%clk 0:03:36] } 36... Kg7 { [%eval -4.02] [%clk 0:00:39] } 37. Qd7+?! { [%eval -5.91] } { Inaccuracy. Qxe6 was best. } { [%clk 0:01:52] } 37... Kf6 { [%eval -5.67] [%clk 0:00:43] } 38. Qxb7?? { [%eval #-9] } { Checkmate is now unavoidable. Bf3 was best. } { [%clk 0:01:44] } 38... Rh8 { [%eval #-8] [%clk 0:01:05] } 0-1