Event: Round 4: Keller, Niklas - Chen, Chicheng Leon
Date: 2025-06-19
White: Keller, Niklas
WhiteElo: 1911
Black: Chen, Chicheng Leon
BlackElo: 2003
Result: 0-1
ECO: B51
Opening: Sicilian Defense: Moscow Variation
Variant: Standard
TimeControl: 90+30

1. e4 { [%eval 0.18] [%clk 1:30:57] } 1... c5 { [%eval 0.25] [%clk 1:30:56] } 2. Nf3 { [%eval 0.2] [%clk 1:31:24] } 2... d6 { [%eval 0.31] [%clk 1:31:24] } 3. Bb5+ { [%eval 0.14] [%clk 1:31:49] } 3... Nd7 { [%eval 0.12] [%clk 1:31:30] } 4. a4 { [%eval 0.05] [%clk 1:32:12] } 4... Nf6 { [%eval 0.22] [%clk 1:31:48] } 5. Nc3 { [%eval 0.1] [%clk 1:32:33] } 5... g6 { [%eval 0.11] [%clk 1:32:00] } 6. O-O { [%eval 0.1] [%clk 1:32:18] } 6... Bg7 { [%eval 0.17] [%clk 1:32:28] } 7. Re1 { [%eval 0.19] [%clk 1:31:45] } 7... O-O { [%eval 0.26] [%clk 1:32:36] } 8. Bf1 { [%eval 0.23] [%clk 1:17:45] } 8... a6 { [%eval 0.33] [%clk 1:31:26] } 9. d3 { [%eval -0.16] [%clk 1:10:32] } 9... b6 { [%eval -0.08] [%clk 1:30:42] } 10. g3 { [%eval -0.18] [%clk 1:08:32] } 10... Bb7 { [%eval -0.09] [%clk 1:30:56] } 11. Bg2 { [%eval -0.18] [%clk 1:08:53] } 11... Qc7 { [%eval -0.15] [%clk 1:29:57] } 12. h3 { [%eval -0.23] [%clk 1:06:55] } 12... Bc6?! { [%eval 0.47] } { Inaccuracy. e6 was best. } { [%clk 1:27:45] } 13. Nd2?! { [%eval -0.42] } { Inaccuracy. d4 was best. } { [%clk 1:04:12] } 13... b5 { [%eval 0.03] [%clk 1:25:46] } 14. Nd5 { [%eval 0.0] [%clk 1:03:36] } 14... Qd8 { [%eval 0.04] [%clk 1:24:58] } 15. axb5 { [%eval -0.17] [%clk 0:57:27] } 15... axb5 { [%eval -0.21] [%clk 1:24:45] } 16. Rxa8 { [%eval -0.23] [%clk 0:57:31] } 16... Bxa8 { [%eval -0.2] [%clk 1:25:08] } 17. Nf1 { [%eval -0.34] [%clk 0:48:56] } 17... Nxd5 { [%eval -0.36] [%clk 1:23:59] } 18. exd5 { [%eval -0.34] [%clk 0:49:12] } 18... Nb6 { [%eval -0.16] [%clk 1:24:14] } 19. Ne3 { [%eval -0.15] [%clk 0:45:24] } 19... Bd4 { [%eval 0.15] [%clk 1:23:07] } 20. c3 { [%eval -0.34] [%clk 0:43:04] } 20... Bxe3 { [%eval -0.4] [%clk 1:22:57] } 21. Bxe3 { [%eval -0.73] [%clk 0:43:00] } 21... Bxd5 { [%eval -0.89] [%clk 1:20:02] } 22. Bg5 { [%eval -1.07] [%clk 0:41:15] } 22... Re8 { [%eval -0.89] [%clk 1:18:35] } 23. Bxd5 { [%eval -0.83] [%clk 0:37:19] } 23... Nxd5 { [%eval -0.97] [%clk 1:18:59] } 24. Qf3 { [%eval -0.85] [%clk 0:37:38] } 24... Nc7?! { [%eval -0.26] } { Inaccuracy. Qa8 was best. } { [%clk 1:13:42] } 25. Kh2? { [%eval -1.38] } { Mistake. Qc6 was best. } { [%clk 0:31:20] } 25... Ne6 { [%eval -1.32] [%clk 1:12:16] } 26. Bh6?! { [%eval -1.94] } { Inaccuracy. h4 was best. } { [%clk 0:31:13] } 26... Qa8 { [%eval -1.71] [%clk 1:09:58] } 27. Qg4 { [%eval -1.9] [%clk 0:30:20] } 27... Qd5 { [%eval -1.83] [%clk 1:08:29] } 28. h4 { [%eval -1.79] [%clk 0:23:50] } 28... Ra8 { [%eval -1.98] [%clk 1:03:39] } 29. Qe4 { [%eval -2.28] [%clk 0:23:08] } 29... Qxe4 { [%eval -2.18] [%clk 1:04:01] } 30. Rxe4 { [%eval -2.11] [%clk 0:23:28] } 30... Ra2 { [%eval -2.11] [%clk 1:03:05] } 31. Re2 { [%eval -2.17] [%clk 0:23:15] } 31... Ra7 { [%eval -2.1] [%clk 1:00:36] } 32. f4?! { [%eval -3.02] } { Inaccuracy. g4 was best. } { [%clk 0:22:49] } 32... Nd8 { [%eval -3.18] [%clk 1:00:29] } 33. g4 { [%eval -3.06] [%clk 0:22:14] } 33... f6 { [%eval -2.82] [%clk 0:59:50] } 34. f5 { [%eval -3.49] [%clk 0:21:53] } 34... Nf7 { [%eval -3.63] [%clk 0:54:22] } 35. Bf4 { [%eval -3.29] [%clk 0:20:51] } 35... Ra4?! { [%eval -2.55] } { Inaccuracy. gxf5 was best. } { [%clk 0:54:17] } 36. Kg3 { [%eval -2.58] [%clk 0:21:03] } 36... Ne5 { [%eval -2.83] [%clk 0:50:51] } 37. Bxe5 { [%eval -2.74] [%clk 0:20:22] } 37... dxe5 { [%eval -2.72] [%clk 0:50:58] } 38. Re4? { [%eval -5.26] } { Mistake. fxg6 was best. } { [%clk 0:20:04] } 38... Rxe4 { [%eval -5.0] [%clk 0:49:00] } 39. dxe4 { [%eval -5.26] [%clk 0:20:01] } 39... Kf7 { [%eval -5.44] [%clk 0:49:21] } 40. h5 { [%eval -5.25] [%clk 0:19:44] } 40... e6 { [%eval -5.33] [%clk 0:48:21] } 41. h6?! { [%eval -8.44] } { Inaccuracy. hxg6+ was best. } { [%clk 0:18:48] } 41... exf5 { [%eval -7.36] [%clk 0:48:13] } 42. exf5 { [%eval -7.07] [%clk 0:18:16] } 42... gxf5 { [%eval -7.63] [%clk 0:48:18] } 43. gxf5 { [%eval -7.97] [%clk 0:18:37] } 43... Ke7 { [%eval -10.52] [%clk 0:48:13] } 44. b3?! { [%eval #-40] } { Checkmate is now unavoidable. Kf3 was best. } { [%clk 0:18:18] } 44... c4 { [%eval -72.3] [%clk 0:46:17] } 45. bxc4?! { [%eval #-36] } { Checkmate is now unavoidable. b4 was best. } { [%clk 0:17:06] } 45... bxc4 { [%eval -11.25] [%clk 0:46:42] } 46. Kf3?! { [%eval #-33] } { Checkmate is now unavoidable. Kf2 was best. } { [%clk 0:16:36] } 46... Kd6 { [%eval #-35] [%clk 0:46:39] } 47. Ke4 { [%eval -59.77] [%clk 0:16:59] } 47... Kc5 { [%eval -73.21] [%clk 0:47:04] } 48. Ke3 { [%eval -11.43] [%clk 0:17:12] } 48... Kd5 { [%eval -49.86] [%clk 0:47:29] } 49. Kf3 { [%eval -11.82] [%clk 0:17:37] } 49... e4+ { [%eval -11.75] [%clk 0:47:39] } 50. Ke3?! { [%eval #-16] } { Checkmate is now unavoidable. Kf4 was best. } { [%clk 0:17:59] } 50... Ke5 { [%eval #-15] [%clk 0:48:07] } 0-1