Event: Biel Chess Festival 2025 MTO
Site: Biel, Switzerland
Date: 2025-07-22
White: Chen, Jun-Wei
WhiteElo: 1906
Black: Sanket Chakravarty
BlackTitle: IM
BlackElo: 2301
Result: 0-1
ECO: B90
Opening: Sicilian Defense: Najdorf Variation, Freak Attack
Variant: Standard
TimeControl: 100 min 40 moves + 30 min Rest + 30 sec per move

1. e4 { [%eval 0.18] [%clk 1:40:57] } 1... c5 { [%eval 0.25] [%clk 1:29:20] } 2. Nf3 { [%eval 0.2] [%clk 1:41:20] } 2... d6 { [%eval 0.31] [%clk 1:29:45] } 3. d4 { [%eval 0.22] [%clk 1:41:44] } 3... cxd4 { [%eval 0.19] [%clk 1:30:11] } 4. Nxd4 { [%eval 0.18] [%clk 1:42:06] } 4... Nf6 { [%eval 0.31] [%clk 1:30:38] } 5. Nc3 { [%eval 0.32] [%clk 1:42:28] } 5... a6 { [%eval 0.28] [%clk 1:30:47] } 6. Rg1 { [%eval 0.0] [%clk 1:42:47] } 6... g6 { [%eval 0.21] [%clk 1:31:05] } 7. g4 { [%eval 0.12] [%clk 1:42:57] } 7... Nc6 { [%eval 0.26] [%clk 1:31:27] } 8. g5 { [%eval 0.28] [%clk 1:42:40] } 8... Nd7 { [%eval 0.3] [%clk 1:31:45] } 9. Be3 { [%eval 0.26] [%clk 1:42:11] } 9... h6 { [%eval 0.31] [%clk 1:31:11] } 10. h4 { [%eval 0.3] [%clk 1:40:40] } 10... hxg5 { [%eval 0.29] [%clk 1:31:18] } 11. hxg5 { [%eval 0.28] [%clk 1:41:02] } 11... Bg7 { [%eval 0.33] [%clk 1:31:05] } 12. Qd2 { [%eval 0.27] [%clk 1:40:46] } 12... Nde5 { [%eval 0.23] [%clk 1:31:21] } 13. Be2 { [%eval 0.21] [%clk 1:40:29] } 13... Ng4 { [%eval 0.35] [%clk 1:31:08] } 14. Bxg4 { [%eval -0.14] [%clk 1:33:50] } 14... Bxg4 { [%eval -0.34] [%clk 1:31:29] } 15. f4?! { [%eval -0.98] } { Inaccuracy. f3 was best. } { [%clk 1:32:34] } 15... Qc8 { [%eval -1.11] [%clk 1:23:01] } 16. Nd5 { [%eval -1.04] [%clk 1:25:49] } 16... Nxd4? { [%eval 0.37] } { Mistake. Rh3 was best. } { [%clk 1:21:36] } 17. Bxd4 { [%eval 0.35] [%clk 1:22:29] } 17... Bxd4 { [%eval 0.42] [%clk 1:21:41] } 18. Qxd4 { [%eval 0.45] [%clk 1:22:47] } 18... Rh2 { [%eval 0.45] [%clk 1:21:57] } 19. c4 { [%eval 0.01] [%clk 1:20:14] } 19... Rb8 { [%eval 0.0] [%clk 0:59:18] } 20. Rc1 { [%eval -0.11] [%clk 1:05:21] } 20... Be6 { [%eval 0.0] [%clk 0:53:34] } 21. Ne3?! { [%eval -0.59] } { Inaccuracy. Rc2 was best. } { [%clk 1:03:19] } 21... Qc6 { [%eval -0.06] [%clk 0:50:41] } 22. Rg2 { [%eval -0.16] [%clk 1:01:27] } 22... Rh4 { [%eval -0.07] [%clk 0:46:18] } 23. Rf2 { [%eval -0.46] [%clk 0:59:46] } 23... Kd7 { [%eval -0.07] [%clk 0:46:21] } 24. Kd2 { [%eval -0.14] [%clk 0:57:17] } 24... Rbh8 { [%eval -0.12] [%clk 0:45:02] } 25. Rcf1 { [%eval -0.07] [%clk 0:55:27] } 25... Qa4 { [%eval -0.16] [%clk 0:41:53] } 26. Qb6 { [%eval -0.21] [%clk 0:54:24] } 26... Kc8?! { [%eval 0.45] } { Inaccuracy. Qc6 was best. } { [%clk 0:41:51] } 27. Qb3?? { [%eval -1.46] } { Blunder. f5 was best. } { [%clk 0:44:41] } 27... Qc6 { [%eval -1.18] [%clk 0:41:24] } 28. Qd3 { [%eval -1.39] [%clk 0:44:10] } 28... Kb8 { [%eval -1.52] [%clk 0:40:58] } 29. Qd4 { [%eval -1.48] [%clk 0:31:39] } 29... Qa4 { [%eval -1.59] [%clk 0:40:33] } 30. a3 { [%eval -1.27] [%clk 0:25:21] } 30... Rc8 { [%eval -1.42] [%clk 0:35:32] } 31. Rc1 { [%eval -1.35] [%clk 0:30:58] } 31... Qb3 { [%eval -1.38] [%clk 0:35:51] } 32. Qc3 { [%eval -1.41] [%clk 0:28:03] } 32... Qb6 { [%eval -1.62] [%clk 0:36:10] } 33. b3 { [%eval -1.65] [%clk 0:25:36] } 33... Qc5 { [%eval -1.64] [%clk 0:31:49] } 34. a4 { [%eval -1.75] [%clk 0:24:34] } 34... Rh3 { [%eval -1.3] [%clk 0:29:49] } 35. Rcf1 { [%eval -1.76] [%clk 0:23:29] } 35... Rch8 { [%eval -1.53] [%clk 0:21:52] } 36. Rf3 { [%eval -1.77] [%clk 0:23:10] } 36... Bd7?! { [%eval -0.92] } { Inaccuracy. Rh2+ was best. } { [%clk 0:21:29] } 37. R1f2?! { [%eval -1.8] } { Inaccuracy. a5 was best. } { [%clk 0:19:04] } 37... a5 { [%eval -1.97] [%clk 0:20:03] } 38. Nc2?? { [%eval -4.33] } { Blunder. f5 was best. } { [%clk 0:15:28] } 38... Bg4 { [%eval -4.66] [%clk 0:13:57] } 39. Re3 { [%eval -4.47] [%clk 0:15:23] } 39... Rh1 { [%eval -4.21] [%clk 0:14:21] } 40. Ne1 { [%eval -4.39] [%clk 0:11:37] } 40... R8h3 { [%eval -3.67] [%clk 0:14:01] } 41. Nf3? { [%eval -6.88] } { Mistake. Rfe2 was best. } { [%clk 0:11:03] } 41... Bxf3 { [%eval -6.79] [%clk 0:09:32] } 42. Rexf3 { [%eval -6.66] [%clk 0:08:12] } 42... Rxf3 { [%eval -7.37] [%clk 0:09:56] } 43. Qxf3 { [%eval -7.21] [%clk 0:06:39] } 43... Qd4+ { [%eval -6.98] [%clk 0:10:21] } 44. Kc2?? { [%eval #-10] } { Checkmate is now unavoidable. Ke2 was best. } { [%clk 0:06:58] } 44... Ra1 { [%eval #-9] [%clk 0:10:42] } 0-1