Event: Biel Chess Festival 2025 MTO
Site: Biel, Switzerland
Date: 2025-07-19
White: Chen, Muxi
WhiteElo: 2224
Black: Stevens, Christian
BlackElo: 2050
Result: 1-0
ECO: B92
Opening: Sicilian Defense: Najdorf Variation, Opocensky Variation
Variant: Standard
TimeControl: 100 min 40 moves + 30 min Rest + 30 sec per move

1. e4 { [%eval 0.18] [%clk 1:40:02] } 1... c5 { [%eval 0.25] [%clk 1:40:54] } 2. Nf3 { [%eval 0.2] [%clk 1:40:26] } 2... d6 { [%eval 0.31] [%clk 1:41:16] } 3. d4 { [%eval 0.22] [%clk 1:40:50] } 3... cxd4 { [%eval 0.19] [%clk 1:41:38] } 4. Nxd4 { [%eval 0.18] [%clk 1:41:15] } 4... Nf6 { [%eval 0.31] [%clk 1:41:57] } 5. Nc3 { [%eval 0.32] [%clk 1:41:40] } 5... a6 { [%eval 0.28] [%clk 1:42:21] } 6. Be2 { [%eval 0.14] [%clk 1:42:03] } 6... e5 { [%eval 0.14] [%clk 1:42:15] } 7. Nb3 { [%eval 0.09] [%clk 1:42:25] } 7... Be7 { [%eval 0.14] [%clk 1:42:36] } 8. Be3 { [%eval 0.23] [%clk 1:42:49] } 8... Be6 { [%eval 0.29] [%clk 1:42:57] } 9. Nd5 { [%eval 0.3] [%clk 1:43:13] } 9... Nbd7 { [%eval 0.3] [%clk 1:39:57] } 10. Qd3 { [%eval 0.3] [%clk 1:43:31] } 10... Bxd5 { [%eval 0.29] [%clk 1:39:26] } 11. exd5 { [%eval 0.32] [%clk 1:43:54] } 11... O-O { [%eval 0.76] [%clk 1:39:13] } 12. O-O { [%eval 0.23] [%clk 1:44:11] } 12... Ne8 { [%eval 0.43] [%clk 1:36:00] } 13. c4 { [%eval 0.15] [%clk 1:39:13] } 13... Rc8 { [%eval 0.42] [%clk 1:32:41] } 14. a4 { [%eval 0.5] [%clk 1:38:10] } 14... Bg5 { [%eval 0.36] [%clk 1:28:43] } 15. a5 { [%eval 0.42] [%clk 1:35:41] } 15... f5 { [%eval 0.39] [%clk 1:25:23] } 16. f4 { [%eval 0.38] [%clk 1:33:26] } 16... exf4 { [%eval 0.47] [%clk 1:16:54] } 17. Bxf4 { [%eval 0.31] [%clk 1:32:50] } 17... Nc5?! { [%eval 1.14] } { Inaccuracy. Bxf4 was best. } { [%clk 1:05:35] } 18. Nxc5 { [%eval 1.15] [%clk 1:28:24] } 18... Rxc5 { [%eval 1.39] [%clk 1:01:18] } 19. b4 { [%eval 1.5] [%clk 1:25:06] } 19... Rc7 { [%eval 1.51] [%clk 0:59:29] } 20. Bg3 { [%eval 1.1] [%clk 1:19:53] } 20... Qf6 { [%eval 1.55] [%clk 0:49:24] } 21. Bf2 { [%eval 1.56] [%clk 1:12:01] } 21... Re7 { [%eval 1.45] [%clk 0:45:53] } 22. Bf3 { [%eval 1.56] [%clk 1:05:48] } 22... Qh6 { [%eval 2.07] [%clk 0:40:32] } 23. c5 { [%eval 1.53] [%clk 1:03:15] } 23... Bf4 { [%eval 1.68] [%clk 0:36:30] } 24. g3 { [%eval 1.84] [%clk 0:33:01] } 24... Be5 { [%eval 1.63] [%clk 0:32:37] } 25. Rab1 { [%eval 1.36] [%clk 0:27:11] } 25... g5?! { [%eval 1.98] } { Inaccuracy. Nc7 was best. } { [%clk 0:24:36] } 26. c6 { [%eval 1.88] [%clk 0:24:26] } 26... g4?! { [%eval 2.71] } { Inaccuracy. Nc7 was best. } { [%clk 0:23:17] } 27. Bg2 { [%eval 2.51] [%clk 0:21:35] } 27... f4 { [%eval 2.56] [%clk 0:20:31] } 28. cxb7?? { [%eval 0.52] } { Blunder. gxf4 was best. } { [%clk 0:16:18] } 28... Rxb7 { [%eval 0.55] [%clk 0:20:42] } 29. gxf4 { [%eval 0.59] [%clk 0:09:15] } 29... Rxf4?! { [%eval 1.22] } { Inaccuracy. Qxf4 was best. } { [%clk 0:16:35] } 30. Bg3 { [%eval 1.1] [%clk 0:08:04] } 30... Rfxb4?? { [%eval 3.1] } { Blunder. Rd4 was best. } { [%clk 0:12:10] } 31. Rxb4 { [%eval 2.96] [%clk 0:05:53] } 31... Rxb4 { [%eval 2.56] [%clk 0:12:11] } 32. Qf5 { [%eval 2.7] [%clk 0:02:49] } 32... Qe3+? { [%eval 4.36] } { Mistake. Qf6 was best. } { [%clk 0:02:31] } 33. Kh1 { [%eval 4.22] [%clk 0:02:28] } 33... Bf6?! { [%eval 5.38] } { Inaccuracy. Nf6 was best. } { [%clk 0:02:53] } 34. Re1 { [%eval 5.3] [%clk 0:00:51] } 1-0