Event: Biel Chess Festival 2025
Date: 2025-07-22
White: Muehlemann, Walter
WhiteElo: 1624
Black: Christoffersen, Odd
BlackElo: 1728
Result: 0-1
ECO: C42
Opening: Petrov's Defense
Variant: Standard

1. e4 { [%eval 0.18] [%clk 1:30:59] } 1... e5 { [%eval 0.22] [%clk 1:30:41] } 2. Nf3 { [%eval 0.13] [%clk 1:31:22] } 2... Nf6 { [%eval 0.34] [%clk 1:31:03] } 3. Nxe5 { [%eval 0.29] [%clk 1:31:42] } 3... d6 { [%eval 0.22] [%clk 1:31:18] } 4. Nf3 { [%eval 0.31] [%clk 1:31:56] } 4... Nxe4 { [%eval 0.24] [%clk 1:31:30] } 5. Bc4 { [%eval -0.11] [%clk 1:31:00] } 5... Be7 { [%eval 0.0] [%clk 1:26:23] } 6. O-O { [%eval -0.09] [%clk 1:31:12] } 6... d5 { [%eval -0.07] [%clk 1:26:23] } 7. Bb3 { [%eval -0.15] [%clk 1:31:05] } 7... O-O { [%eval -0.16] [%clk 1:26:21] } 8. Re1 { [%eval -0.21] [%clk 1:29:40] } 8... Bg4 { [%eval 0.11] [%clk 1:24:14] } 9. d4 { [%eval -0.42] [%clk 1:28:56] } 9... Re8 { [%eval -0.18] [%clk 1:21:37] } 10. Nbd2 { [%eval -0.15] [%clk 1:28:34] } 10... Nf6 { [%eval 0.35] [%clk 1:20:10] } 11. c4 { [%eval -0.09] [%clk 1:28:28] } 11... Nc6 { [%eval 0.0] [%clk 1:19:09] } 12. cxd5? { [%eval -1.67] } { Mistake. h3 was best. } { [%clk 1:27:57] } 12... Nxd4 { [%eval -1.52] [%clk 1:16:52] } 13. Ne4 { [%eval -2.11] [%clk 1:26:09] } 13... Nxe4?! { [%eval -1.42] } { Inaccuracy. Nxf3+ was best. } { [%clk 1:08:40] } 14. Qxd4? { [%eval -2.97] } { Mistake. Rxe4 was best. } { [%clk 1:25:28] } 14... Bxf3 { [%eval -2.91] [%clk 1:03:50] } 15. gxf3 { [%eval -2.76] [%clk 1:25:40] } 15... Nd6?? { [%eval -0.55] } { Blunder. Bc5 was best. } { [%clk 1:02:57] } 16. Bf4 { [%eval -0.48] [%clk 1:24:16] } 16... Bf6 { [%eval -0.56] [%clk 0:57:40] } 17. Rxe8+ { [%eval -0.57] [%clk 1:24:14] } 17... Qxe8 { [%eval -0.54] [%clk 0:57:06] } 18. Qd2 { [%eval -0.37] [%clk 1:24:10] } 18... Qd7 { [%eval -0.44] [%clk 0:55:57] } 19. Re1 { [%eval -0.5] [%clk 1:23:11] } 19... Nf5 { [%eval -0.41] [%clk 0:55:13] } 20. Bg3 { [%eval -0.59] [%clk 1:21:41] } 20... Nd4 { [%eval -0.25] [%clk 0:50:37] } 21. Qd3 { [%eval -0.33] [%clk 1:19:41] } 21... h5 { [%eval 0.0] [%clk 0:46:41] } 22. Re4 { [%eval -0.12] [%clk 1:17:05] } 22... Nf5 { [%eval -0.16] [%clk 0:42:27] } 23. Qc2?! { [%eval -1.01] } { Inaccuracy. Ba4 was best. } { [%clk 1:13:28] } 23... Rc8 { [%eval -0.47] [%clk 0:37:53] } 24. Kg2?! { [%eval -1.05] } { Inaccuracy. Be5 was best. } { [%clk 1:13:04] } 24... Nd4?! { [%eval -0.08] } { Inaccuracy. h4 was best. } { [%clk 0:35:53] } 25. Qd3 { [%eval -0.42] [%clk 1:12:58] } 25... Ne6 { [%eval 0.03] [%clk 0:30:03] } 26. Qc4 { [%eval -0.4] [%clk 1:06:10] } 26... Ng5 { [%eval -0.44] [%clk 0:28:50] } 27. Rh4 { [%eval -0.43] [%clk 1:05:28] } 27... g6 { [%eval -0.53] [%clk 0:25:15] } 28. Qf4? { [%eval -1.8] } { Mistake. Ba4 was best. } { [%clk 1:02:30] } 28... Nh7 { [%eval -1.64] [%clk 0:24:20] } 29. Rxh5?? { [%eval -3.93] } { Blunder. Rh3 was best. } { [%clk 0:55:16] } 29... gxh5 { [%eval -3.87] [%clk 0:23:47] } 30. Qh6?! { [%eval -4.99] } { Inaccuracy. Bc2 was best. } { [%clk 0:55:10] } 30... Qf5 { [%eval -4.44] [%clk 0:22:02] } 31. h4 { [%eval -4.31] [%clk 0:54:17] } 31... b5 { [%eval -4.2] [%clk 0:20:29] } 32. Qe3 { [%eval -4.31] [%clk 0:53:15] } 32... a5 { [%eval -4.29] [%clk 0:20:00] } 33. Qe2 { [%eval -4.48] [%clk 0:52:39] } 33... Qd7 { [%eval -4.11] [%clk 0:19:06] } 34. Qd3 { [%eval -4.47] [%clk 0:52:30] } 34... Nf8 { [%eval -4.44] [%clk 0:18:29] } 35. Bc2 { [%eval -4.44] [%clk 0:49:04] } 35... Rd8 { [%eval -4.63] [%clk 0:16:11] } 36. Qe3 { [%eval -4.75] [%clk 0:48:07] } 36... a4 { [%eval -4.38] [%clk 0:13:13] } 37. Be4 { [%eval -4.49] [%clk 0:47:55] } 37... Kg7 { [%eval -4.64] [%clk 0:12:15] } 38. Be5?! { [%eval -7.11] } { Inaccuracy. b3 was best. } { [%clk 0:46:37] } 38... Ng6?! { [%eval -4.94] } { Inaccuracy. Bxe5 was best. } { [%clk 0:11:30] } 39. Bxf6+ { [%eval -5.18] [%clk 0:46:00] } 39... Kxf6 { [%eval -5.21] [%clk 0:11:37] } 40. Qg5+ { [%eval -5.85] [%clk 0:46:04] } 40... Kg7 { [%eval -5.69] [%clk 0:11:46] } 41. Qxh5?? { [%eval #-18] } { Checkmate is now unavoidable. Qd2 was best. } { [%clk 0:44:44] } 41... Qe7?? { [%eval -5.5] } { Lost forced checkmate sequence. Nf4+ was best. } { [%clk 0:11:15] } 42. Qg4 { [%eval -6.39] [%clk 0:44:00] } 42... Qxh4 { [%eval -6.14] [%clk 0:11:02] } 43. Bxg6 { [%clk 0:43:03] } 43... Qxg4+ { [%clk 0:11:17] } 0-1