Event: Biel Chess Festival 2025 MTO
Site: Biel, Switzerland
Date: 2025-07-21
White: von Burg, Carl Alexander
WhiteElo: 1878
Black: Pisan, Kai
BlackElo: 1995
Result: 0-1
ECO: A06
Opening: Zukertort Opening
Variant: Standard
TimeControl: 100 min 40 moves + 30 min Rest + 30 sec per move

1. Nf3 { [%eval 0.1] [%clk 1:40:38] } 1... d5 { [%eval 0.18] [%clk 1:40:33] } 2. e3 { [%eval 0.0] [%clk 1:40:51] } 2... Nf6 { [%eval 0.01] [%clk 1:40:08] } 3. c4 { [%eval 0.07] [%clk 1:40:55] } 3... e6 { [%eval 0.04] [%clk 1:36:33] } 4. Nc3 { [%eval 0.01] [%clk 1:38:47] } 4... c6 { [%eval 0.26] [%clk 1:35:02] } 5. b3 { [%eval 0.13] [%clk 1:36:10] } 5... Nbd7 { [%eval 0.2] [%clk 1:35:16] } 6. Bb2 { [%eval 0.21] [%clk 1:35:13] } 6... Bd6 { [%eval 0.16] [%clk 1:35:03] } 7. Rc1 { [%eval 0.11] [%clk 1:32:30] } 7... Qe7 { [%eval 0.1] [%clk 1:29:08] } 8. Qc2 { [%eval 0.13] [%clk 1:31:10] } 8... a6 { [%eval 0.26] [%clk 1:26:12] } 9. Be2 { [%eval 0.23] [%clk 1:18:13] } 9... Ne5 { [%eval 0.37] [%clk 1:11:56] } 10. Na4 { [%eval 0.48] [%clk 1:09:53] } 10... Ned7?! { [%eval 1.3] } { Inaccuracy. Nxf3+ was best. } { [%clk 1:06:58] } 11. c5?! { [%eval 0.3] } { Inaccuracy. cxd5 was best. } { [%clk 1:02:20] } 11... Bc7 { [%eval 0.31] [%clk 1:07:09] } 12. Nd4 { [%eval 0.3] [%clk 0:56:57] } 12... Nf8?! { [%eval 1.24] } { Inaccuracy. O-O was best. } { [%clk 0:59:52] } 13. h3?? { [%eval -0.64] } { Blunder. Nb6 was best. } { [%clk 0:45:10] } 13... e5 { [%eval -0.75] [%clk 0:59:01] } 14. Nf5 { [%eval -1.3] [%clk 0:43:15] } 14... Bxf5 { [%eval -1.26] [%clk 0:58:35] } 15. Qxf5 { [%eval -1.34] [%clk 0:43:39] } 15... Qe6? { [%eval -0.22] } { Mistake. Ne4 was best. } { [%clk 0:56:29] } 16. Qc2?! { [%eval -1.22] } { Inaccuracy. Qxe6+ was best. } { [%clk 0:41:19] } 16... N8d7 { [%eval -0.77] [%clk 0:54:34] } 17. a3 { [%eval -0.93] [%clk 0:40:07] } 17... Rd8 { [%eval -0.9] [%clk 0:52:09] } 18. d3 { [%eval -0.69] [%clk 0:38:14] } 18... O-O { [%eval -0.74] [%clk 0:44:56] } 19. g4 { [%eval -1.12] [%clk 0:33:33] } 19... e4 { [%eval -1.28] [%clk 0:40:15] } 20. g5?! { [%eval -2.12] } { Inaccuracy. d4 was best. } { [%clk 0:32:39] } 20... exd3 { [%eval -1.97] [%clk 0:39:35] } 21. Bxd3 { [%eval -2.15] [%clk 0:29:28] } 21... Ne4 { [%eval -1.99] [%clk 0:38:22] } 22. Bxe4 { [%eval -2.11] [%clk 0:24:22] } 22... dxe4 { [%eval -2.38] [%clk 0:38:08] } 23. h4 { [%eval -2.38] [%clk 0:21:58] } 23... Qg4 { [%eval -2.33] [%clk 0:25:35] } 24. Qe2 { [%eval -2.21] [%clk 0:21:29] } 24... Qf5 { [%eval -2.08] [%clk 0:24:45] } 25. Rg1 { [%eval -1.93] [%clk 0:19:08] } 25... Be5?? { [%eval -0.17] } { Blunder. Ne5 was best. } { [%clk 0:18:26] } 26. Qg4 { [%eval -0.32] [%clk 0:17:35] } 26... Qxg4 { [%eval -0.05] [%clk 0:09:37] } 27. Rxg4 { [%eval 0.0] [%clk 0:18:00] } 27... f5 { [%eval 0.0] [%clk 0:07:06] } 28. gxf6 { [%eval 0.0] [%clk 0:16:29] } 28... Nxf6 { [%eval 0.0] [%clk 0:07:23] } 29. Rg5 { [%eval -0.04] [%clk 0:15:43] } 29... Bxb2 { [%eval 0.0] [%clk 0:07:41] } 30. Nxb2 { [%eval -0.02] [%clk 0:16:07] } 30... h5 { [%eval 0.03] [%clk 0:02:10] } 31. Rd1 { [%eval 0.0] [%clk 0:12:31] } 31... Rd5 { [%eval 0.41] [%clk 0:04:01] } 32. Rdxd5 { [%eval 0.4] [%clk 0:09:40] } 32... cxd5 { [%eval 0.3] [%clk 0:04:22] } 33. Nd1 { [%eval 0.19] [%clk 0:09:11] } 33... Rd8 { [%eval 0.38] [%clk 0:03:30] } 34. Kd2 { [%eval 0.19] [%clk 0:04:48] } 34... d4 { [%eval 0.16] [%clk 0:03:40] } 35. exd4 { [%eval 0.0] [%clk 0:04:26] } 35... Rxd4+ { [%eval 0.03] [%clk 0:04:02] } 36. Kc2 { [%eval -0.04] [%clk 0:04:38] } 36... e3 { [%eval 0.0] [%clk 0:02:12] } 37. Nxe3 { [%eval 0.0] [%clk 0:03:24] } 37... Rxh4 { [%eval 0.05] [%clk 0:01:30] } 38. Rxg7+ { [%eval 0.0] [%clk 0:03:04] } 38... Kxg7 { [%eval 0.0] [%clk 0:01:19] } 39. Nf5+ { [%eval 0.0] [%clk 0:03:29] } 39... Kg6 { [%eval 0.0] [%clk 0:00:48] } 40. Nxh4+ { [%eval 0.0] [%clk 0:03:49] } 40... Kg5 { [%eval 0.0] [%clk 0:01:08] } 41. Nf3+ { [%eval -0.03] [%clk 0:28:31] } 41... Kf4 { [%eval -0.13] [%clk 0:30:34] } 42. Ng1 { [%eval 0.0] [%clk 0:23:14] } 42... Ne4 { [%eval 0.0] [%clk 0:27:25] } 43. b4 { [%eval 0.0] [%clk 0:19:32] } 43... Nxf2 { [%eval -0.11] [%clk 0:25:57] } 44. a4 { [%eval -0.15] [%clk 0:19:22] } 44... Ke4 { [%eval -0.19] [%clk 0:23:26] } 45. Kc3 { [%eval -0.22] [%clk 0:18:46] } 45... Kd5 { [%eval -0.17] [%clk 0:22:48] } 46. Nf3 { [%eval -0.25] [%clk 0:18:11] } 46... a5 { [%eval -0.11] [%clk 0:18:08] } 47. c6 { [%eval -0.11] [%clk 0:07:16] } 47... axb4+ { [%eval -0.16] [%clk 0:17:58] } 48. Kxb4 { [%eval -0.22] [%clk 0:07:32] } 48... bxc6 { [%eval 0.0] [%clk 0:12:38] } 49. a5 { [%eval -0.04] [%clk 0:06:34] } 49... Nd3+ { [%eval -0.25] [%clk 0:12:30] } 50. Kc3 { [%eval -0.3] [%clk 0:05:55] } 50... Nc5 { [%eval -0.45] [%clk 0:12:16] } 51. Kd2?? { [%eval -4.27] } { Blunder. Kb4 was best. } { [%clk 0:04:26] } 51... Nb3+ { [%eval -4.4] [%clk 0:11:42] } 52. Ke3 { [%eval -4.64] [%clk 0:04:36] } 52... Nxa5 { [%eval -4.58] [%clk 0:11:50] } 53. Kf4 { [%eval -4.46] [%clk 0:04:55] } 53... c5?? { [%eval -0.1] } { Blunder. Nb3 was best. } { [%clk 0:08:46] } 54. Ne5?? { [%eval -4.17] } { Blunder. Nd2 was best. } { [%clk 0:04:18] } 54... Kd4?? { [%eval 0.0] } { Blunder. Ke6 was best. } { [%clk 0:06:07] } 55. Nf3+ { [%eval 0.0] [%clk 0:03:39] } 55... Kd3 { [%eval 0.0] [%clk 0:03:40] } 56. Ne5+ { [%eval 0.0] [%clk 0:03:42] } 56... Ke2 { [%eval 0.0] [%clk 0:01:39] } 57. Kg5 { [%eval 0.0] [%clk 0:02:45] } 57... Ke3 { [%eval 0.0] [%clk 0:01:02] } 58. Kxh5?? { [%eval -4.53] } { Blunder. Nd7 was best. } { [%clk 0:02:14] } 58... Ke4 { [%eval -4.32] [%clk 0:01:06] } 59. Nd7?! { [%eval -5.48] } { Inaccuracy. Nf7 was best. } { [%clk 0:02:02] } 59... c4 { [%eval -5.97] [%clk 0:01:30] } 60. Nc5+ { [%eval -5.18] [%clk 0:01:47] } 60... Kd4 { [%eval -4.17] [%clk 0:01:13] } 61. Na4?? { [%eval #-16] } { Checkmate is now unavoidable. Na6 was best. } { [%clk 0:01:56] } 61... Nb3 { [%eval #-15] [%clk 0:01:28] } 62. Kg4 { [%eval #-15] [%clk 0:01:52] } 62... Nc5 { [%eval #-14] [%clk 0:01:47] } 63. Nxc5 { [%eval #-14] [%clk 0:00:35] } 63... Kxc5 { [%eval #-13] [%clk 0:02:09] } 64. Kf3 { [%eval #-13] [%clk 0:01:04] } 64... Kb4 { [%eval #-13] [%clk 0:02:00] } 65. Ke2 { [%eval #-13] [%clk 0:01:29] } 65... Kc3 { [%eval #-12] [%clk 0:02:14] } 66. Kd1 { [%eval #-12] [%clk 0:01:47] } 66... Kb2 { [%eval #-11] [%clk 0:02:39] } 67. Kd2 { [%clk 0:01:09] } 0-1