Event: Biel Chess Festival 2025 MTO
Site: Biel, Switzerland
Date: 2025-07-17
White: Chen, Yuan
WhiteElo: 2286
Black: Dau Khuong Duy
BlackTitle: IM
BlackElo: 2456
Result: 1/2-1/2
ECO: B42
Opening: Sicilian Defense: Kan Variation, Polugaevsky Variation
Variant: Standard
TimeControl: 100 min 40 moves + 30 min Rest + 30 sec per move

1. e4 { [%eval 0.18] [%clk 1:39:53] } 1... c5 { [%eval 0.25] [%clk 1:40:43] } 2. Nf3 { [%eval 0.2] [%clk 1:39:53] } 2... e6 { [%eval 0.28] [%clk 1:40:58] } 3. d4 { [%eval 0.4] [%clk 1:37:43] } 3... cxd4 { [%eval 0.29] [%clk 1:41:06] } 4. Nxd4 { [%eval 0.23] [%clk 1:38:08] } 4... a6 { [%eval 0.42] [%clk 1:41:24] } 5. Bd3 { [%eval 0.45] [%clk 1:36:51] } 5... Bc5 { [%eval 0.42] [%clk 1:41:22] } 6. Nb3 { [%eval 0.34] [%clk 1:37:11] } 6... Ba7 { [%eval 0.36] [%clk 1:41:27] } 7. Qe2 { [%eval 0.34] [%clk 1:36:52] } 7... Nc6 { [%eval 0.49] [%clk 1:40:36] } 8. Be3 { [%eval 0.49] [%clk 1:36:51] } 8... Nge7 { [%eval 0.41] [%clk 1:39:14] } 9. N1d2 { [%eval 0.22] [%clk 1:34:32] } 9... O-O { [%eval 0.27] [%clk 1:35:43] } 10. f4 { [%eval 0.0] [%clk 1:29:20] } 10... d6 { [%eval 0.41] [%clk 1:33:11] } 11. Nf3 { [%eval 0.07] [%clk 1:32:39] } 11... b5 { [%eval 0.39] [%clk 1:26:36] } 12. Bxa7 { [%eval 0.09] [%clk 1:31:31] } 12... Rxa7 { [%eval 0.01] [%clk 1:26:59] } 13. e5 { [%eval -0.21] [%clk 1:27:12] } 13... dxe5 { [%eval -0.2] [%clk 1:08:41] } 14. O-O-O { [%eval -0.31] [%clk 1:20:02] } 14... Nd5 { [%eval -0.44] [%clk 1:03:33] } 15. Nxe5 { [%eval -0.28] [%clk 1:12:02] } 15... Ncb4 { [%eval -0.29] [%clk 0:57:31] } 16. Kb1 { [%eval -0.25] [%clk 1:09:34] } 16... Nxd3 { [%eval -0.27] [%clk 0:56:16] } 17. Qxd3 { [%eval -0.29] [%clk 1:09:28] } 17... Qf6 { [%eval -0.16] [%clk 0:54:27] } 18. g3 { [%eval -0.11] [%clk 1:07:59] } 18... Rc7 { [%eval -0.1] [%clk 0:48:10] } 19. Na5 { [%eval -0.09] [%clk 0:53:07] } 19... Bd7 { [%eval -0.1] [%clk 0:44:15] } 20. Qd4 { [%eval -0.09] [%clk 0:48:16] } 20... Rfc8 { [%eval -0.08] [%clk 0:46:54] } 21. Nxd7 { [%eval -0.08] [%clk 0:46:51] } 21... Rxd7 { [%eval -0.09] [%clk 0:47:16] } 22. Qxf6 { [%eval -0.08] [%clk 0:46:53] } 22... gxf6 { [%eval -0.11] [%clk 0:47:39] } 23. Rd3 { [%eval -0.18] [%clk 0:43:40] } 23... Rdc7 { [%eval -0.08] [%clk 0:46:25] } 24. c3 { [%eval -0.1] [%clk 0:41:34] } 24... f5 { [%eval -0.12] [%clk 0:46:01] } 25. a3 { [%eval -0.11] [%clk 0:40:22] } 25... h5 { [%eval -0.1] [%clk 0:45:06] } 26. Nb3 { [%eval -0.12] [%clk 0:40:28] } 26... Kg7 { [%eval 0.0] [%clk 0:45:14] } 27. Nd4 { [%eval 0.0] [%clk 0:40:35] } 27... Kf6 { [%eval 0.0] [%clk 0:45:14] } 28. Nc2 { [%eval -0.25] [%clk 0:39:39] } 28... h4 { [%eval -0.32] [%clk 0:42:31] } 29. Nb4 { [%eval -0.29] [%clk 0:39:45] } 29... Nxb4 { [%eval -0.24] [%clk 0:42:02] } 1/2-1/2