Event: Round 4: Zhang, Xiheng - Koppenens, Oscar
Date: 2025-05-17
White: Zhang, Xiheng
WhiteElo: 1885
Black: Koppenens, Oscar
BlackElo: 2024
Result: 0-1
ECO: B56
Opening: Sicilian Defense: Classical Variation
Variant: Standard
TimeControl: 90+30

1. e4 { [%eval 0.18] [%clk 1:30:30] } 1... c5 { [%eval 0.25] [%clk 1:30:51] } 2. Nf3 { [%eval 0.2] [%clk 1:30:54] } 2... d6 { [%eval 0.31] [%clk 1:30:26] } 3. d4 { [%eval 0.22] [%clk 1:31:17] } 3... cxd4 { [%eval 0.19] [%clk 1:30:53] } 4. Nxd4 { [%eval 0.18] [%clk 1:31:37] } 4... Nf6 { [%eval 0.31] [%clk 1:31:18] } 5. Nc3 { [%eval 0.32] [%clk 1:32:01] } 5... Nc6 { [%eval 0.3] [%clk 1:31:15] } 6. f3 { [%eval 0.12] [%clk 1:29:17] } 6... e5 { [%eval 0.28] [%clk 1:30:06] } 7. Nb3 { [%eval 0.17] [%clk 1:28:11] } 7... Be6 { [%eval 0.21] [%clk 1:28:36] } 8. Be3 { [%eval 0.21] [%clk 1:26:00] } 8... d5 { [%eval 0.25] [%clk 1:27:31] } 9. exd5 { [%eval 0.17] [%clk 1:25:16] } 9... Nxd5 { [%eval 0.22] [%clk 1:26:35] } 10. Nxd5 { [%eval 0.16] [%clk 1:24:09] } 10... Qxd5 { [%eval 0.23] [%clk 1:26:56] } 11. Qxd5 { [%eval 0.21] [%clk 1:23:58] } 11... Bxd5 { [%eval 0.16] [%clk 1:27:22] } 12. O-O-O { [%eval 0.2] [%clk 1:23:03] } 12... O-O-O { [%eval 0.19] [%clk 1:27:49] } 13. Bd3 { [%eval 0.19] [%clk 1:18:46] } 13... g6 { [%eval 0.17] [%clk 1:26:13] } 14. Rhe1 { [%eval 0.17] [%clk 1:15:58] } 14... Bg7 { [%eval 0.35] [%clk 1:24:47] } 15. Bb5 { [%eval 0.25] [%clk 1:04:31] } 15... Kc7 { [%eval 0.19] [%clk 1:20:17] } 16. Bg5 { [%eval 0.03] [%clk 0:56:09] } 16... f6 { [%eval 0.05] [%clk 1:20:03] } 17. Bh4 { [%eval -0.1] [%clk 0:55:16] } 17... h5 { [%eval -0.13] [%clk 1:08:17] } 18. Bf2 { [%eval -0.14] [%clk 0:52:22] } 18... f5 { [%eval 0.09] [%clk 1:02:31] } 19. Bh4 { [%eval -0.05] [%clk 0:48:22] } 19... Bh6+ { [%eval -0.06] [%clk 1:02:15] } 20. Kb1 { [%eval -0.03] [%clk 0:48:21] } 20... g5 { [%eval -0.02] [%clk 1:01:45] } 21. Bf2 { [%eval -0.01] [%clk 0:47:00] } 21... Bg7 { [%eval -0.01] [%clk 1:01:49] } 22. Nc5 { [%eval -0.06] [%clk 0:44:06] } 22... Rhe8 { [%eval 0.03] [%clk 0:55:05] } 23. Bd3 { [%eval -0.26] [%clk 0:36:15] } 23... b6 { [%eval -0.29] [%clk 0:51:56] } 24. Nb3?! { [%eval -0.84] } { Inaccuracy. Na6+ was best. } { [%clk 0:32:20] } 24... Rf8 { [%eval -0.41] [%clk 0:50:44] } 25. Nd2 { [%eval -0.5] [%clk 0:30:30] } 25... e4?! { [%eval 0.06] } { Inaccuracy. Nb4 was best. } { [%clk 0:43:39] } 26. fxe4 { [%eval 0.04] [%clk 0:29:24] } 26... fxe4 { [%eval 0.16] [%clk 0:42:20] } 27. Bg3+ { [%eval 0.02] [%clk 0:28:27] } 27... Kb7 { [%eval 0.48] [%clk 0:40:45] } 28. Nxe4 { [%eval 0.01] [%clk 0:20:54] } 28... h4 { [%eval 0.03] [%clk 0:37:43] } 29. Bd6 { [%eval 0.1] [%clk 0:20:24] } 29... Rfe8 { [%eval 0.06] [%clk 0:37:08] } 30. c4 { [%eval 0.0] [%clk 0:16:56] } 30... Bg8 { [%eval 0.15] [%clk 0:36:01] } 31. Ba3 { [%eval 0.0] [%clk 0:14:30] } 31... Re6?! { [%eval 0.62] } { Inaccuracy. Kb8 was best. } { [%clk 0:34:48] } 32. c5?! { [%eval 0.05] } { Inaccuracy. Bc2 was best. } { [%clk 0:13:18] } 32... Kc7 { [%eval 0.07] [%clk 0:32:48] } 33. Bc2 { [%eval 0.04] [%clk 0:11:33] } 33... Rde8 { [%eval 0.05] [%clk 0:31:09] } 34. Rd6 { [%eval 0.0] [%clk 0:09:35] } 34... Bh7 { [%eval 0.01] [%clk 0:30:02] } 35. cxb6+ { [%eval 0.0] [%clk 0:03:18] } 35... axb6 { [%eval 0.17] [%clk 0:29:53] } 36. Rc1 { [%eval 0.07] [%clk 0:01:56] } 36... g4 { [%eval 0.0] [%clk 0:26:28] } 37. Rxe6 { [%eval 0.0] [%clk 0:01:56] } 37... Rxe6 { [%eval 0.0] [%clk 0:26:50] } 38. Ng5? { [%eval -1.63] } { Mistake. Nc3 was best. } { [%clk 0:01:05] } 38... Bxc2+ { [%eval -1.53] [%clk 0:27:13] } 39. Kxc2 { [%eval -1.17] [%clk 0:01:01] } 39... Re5 { [%eval -1.32] [%clk 0:26:29] } 40. Nf7 { [%eval -1.68] [%clk 0:01:02] } 40... Re2+ { [%eval -1.62] [%clk 0:25:21] } 41. Kb1?? { [%eval -3.71] } { Blunder. Kd3 was best. } { [%clk 0:01:00] } 41... Rxg2 { [%eval -3.3] [%clk 0:25:36] } 42. Rf1 { [%eval -3.8] [%clk 0:00:46] } 42... b5 { [%eval -4.02] [%clk 0:25:25] } 43. Bd6+ { [%eval -4.68] [%clk 0:00:56] } 43... Kd7 { [%eval -4.53] [%clk 0:25:29] } 44. Bf4?! { [%eval -5.83] } { Inaccuracy. Rf4 was best. } { [%clk 0:01:06] } 44... Rxb2+ { [%eval -5.69] [%clk 0:24:56] } 45. Kc1 { [%eval -5.65] [%clk 0:01:28] } 45... Rxa2 { [%eval -5.7] [%clk 0:24:48] } 46. Rd1+ { [%eval -5.69] [%clk 0:01:34] } 46... Ke6 { [%eval -5.71] [%clk 0:23:59] } 47. Rd6+ { [%eval -6.4] [%clk 0:01:48] } 47... Kxf7 { [%eval -6.29] [%clk 0:24:23] } 48. Rxc6 { [%eval -5.49] [%clk 0:02:15] } 48... Ra4 { [%eval -6.48] [%clk 0:24:18] } 49. Bg5 { [%eval -6.6] [%clk 0:01:50] } 49... h3 { [%eval -6.44] [%clk 0:23:58] } 50. Rb6?! { [%eval -9.01] } { Inaccuracy. Kd2 was best. } { [%clk 0:01:02] } 50... Be5?! { [%eval -6.38] } { Inaccuracy. g3 was best. } { [%clk 0:20:44] } 51. Rxb5 { [%eval -6.64] [%clk 0:00:45] } 51... Bxh2 { [%eval -6.5] [%clk 0:21:06] } 52. Bh4 { [%eval -8.24] [%clk 0:00:44] } 52... Bf4+ { [%eval -8.1] [%clk 0:21:15] } 53. Kc2 { [%eval -8.46] [%clk 0:01:03] } 53... h2 { [%eval -7.28] [%clk 0:21:34] } 54. Rb1 { [%eval -9.12] [%clk 0:01:19] } 54... Rc4+ { [%eval -9.36] [%clk 0:22:00] } 55. Kd3 { [%eval -9.33] [%clk 0:01:24] } 55... Rc1 { [%eval #-16] [%clk 0:22:11] } 56. Rb7+ { [%eval #-14] [%clk 0:01:44] } 56... Bc7 { [%eval #-13] [%clk 0:22:28] } 57. Bg3 { [%eval #-13] [%clk 0:01:52] } 57... h1=Q { [%eval #-17] [%clk 0:22:28] } 58. Kd4 { [%clk 0:01:46] } 0-1