Event: Round 1: O`cuilleanain, Oisin - Czopor, Maciej
Site: https://lichess.org/broadcast/2025-london-chess-classic--fide-open/round-1/blZBAVFl/iHvueh0v
Date: 2025-11-27
White: O`cuilleanain, Oisin
WhiteElo: 2170
Black: Czopor, Maciej
BlackTitle: IM
BlackElo: 2463
Result: 0-1
ECO: B30
Opening: Sicilian Defense: Nyezhmetdinov-Rossolimo Attack
Variant: Standard

1. e4 { [%eval 0.18] [%clk 1:26:00] } 1... c5 { [%eval 0.25] [%clk 1:30:56] } 2. Nf3 { [%eval 0.2] [%clk 1:25:54] } 2... Nc6 { [%eval 0.3] [%clk 1:31:21] } 3. Bb5 { [%eval 0.17] [%clk 1:24:12] } 3... e6 { [%eval 0.2] [%clk 1:31:45] } 4. O-O { [%eval 0.24] [%clk 1:23:24] } 4... Nge7 { [%eval 0.32] [%clk 1:32:08] } 5. Re1 { [%eval 0.24] [%clk 1:22:49] } 5... b6 { [%eval 0.26] [%clk 1:30:33] } 6. c3 { [%eval 0.32] [%clk 1:20:36] } 6... a6 { [%eval 0.22] [%clk 1:29:45] } 7. Ba4 { [%eval 0.25] [%clk 1:19:22] } 7... c4 { [%eval 0.28] [%clk 1:25:57] } 8. d4 { [%eval 0.32] [%clk 1:13:33] } 8... cxd3 { [%eval 0.32] [%clk 1:26:22] } 9. Qxd3 { [%eval 0.27] [%clk 1:13:58] } 9... Bb7 { [%eval 0.58] [%clk 1:25:49] } 10. c4 { [%eval 0.14] [%clk 1:02:48] } 10... Ng6 { [%eval 0.16] [%clk 1:23:41] } 11. Nc3 { [%eval 0.21] [%clk 1:02:39] } 11... Bc5 { [%eval 0.26] [%clk 1:06:32] } 12. a3 { [%eval 0.16] [%clk 0:58:51] } 12... Nge5 { [%eval 0.29] [%clk 0:46:51] } 13. Nxe5 { [%eval 0.38] [%clk 0:55:11] } 13... Nxe5 { [%eval 0.38] [%clk 0:46:58] } 14. Qg3 { [%eval 0.28] [%clk 0:43:53] } 14... Qf6 { [%eval 0.31] [%clk 0:45:23] } 15. Rd1 { [%eval 0.38] [%clk 0:37:49] } 15... h5 { [%eval 0.34] [%clk 0:24:46] } 16. b4? { [%eval -0.94] } { Mistake. h4 was best. } { [%clk 0:32:15] } 16... h4 { [%eval -0.9] [%clk 0:25:10] } 17. Qf4 { [%eval -0.9] [%clk 0:32:33] } 17... Be7 { [%eval -0.92] [%clk 0:25:17] } 18. Qxf6 { [%eval -1.03] [%clk 0:28:05] } 18... Bxf6 { [%eval -0.99] [%clk 0:20:50] } 19. f4 { [%eval -1.03] [%clk 0:26:54] } 19... Nxc4 { [%eval -1.03] [%clk 0:19:37] } 20. e5 { [%eval -1.29] [%clk 0:25:55] } 20... Nxe5? { [%eval 0.0] } { Mistake. b5 was best. } { [%clk 0:04:53] } 21. fxe5 { [%eval 0.0] [%clk 0:26:17] } 21... Bxe5 { [%eval 0.0] [%clk 0:05:22] } 22. Bb2?! { [%eval -0.78] } { Inaccuracy. Rd3 was best. } { [%clk 0:23:53] } 22... b5 { [%eval -0.85] [%clk 0:05:36] } 23. Bb3?! { [%eval -1.97] } { Inaccuracy. Bc2 was best. } { [%clk 0:23:49] } 23... Rh5?! { [%eval -1.23] } { Inaccuracy. h3 was best. } { [%clk 0:04:58] } 24. Rd2 { [%eval -1.04] [%clk 0:22:04] } 24... Rc8 { [%eval -1.02] [%clk 0:04:05] } 25. Nd1 { [%eval -1.14] [%clk 0:20:48] } 25... Ke7 { [%eval -0.67] [%clk 0:03:25] } 26. Bxe5 { [%eval -0.94] [%clk 0:17:29] } 26... Rxe5 { [%eval -0.99] [%clk 0:03:54] } 27. Nf2 { [%eval -0.82] [%clk 0:17:38] } 27... Rc3 { [%eval -0.99] [%clk 0:03:30] } 28. Rad1? { [%eval -2.28] } { Mistake. Rd3 was best. } { [%clk 0:14:51] } 28... Bc6 { [%eval -2.37] [%clk 0:03:55] } 29. Rd3 { [%eval -2.36] [%clk 0:15:06] } 29... Rxd3 { [%eval -2.15] [%clk 0:04:01] } 30. Nxd3 { [%eval -2.28] [%clk 0:15:28] } 30... Re2 { [%eval -2.46] [%clk 0:04:29] } 31. Ne1 { [%eval -2.31] [%clk 0:13:53] } 31... Re3 { [%eval -2.28] [%clk 0:01:40] } 32. Nd3 { [%eval -2.11] [%clk 0:13:34] } 32... Re2 { [%eval -2.35] [%clk 0:02:09] } 33. Ne1 { [%eval -2.26] [%clk 0:13:55] } 33... Rb2 { [%eval -1.99] [%clk 0:02:36] } 34. Rd3?! { [%eval -2.64] } { Inaccuracy. Bc2 was best. } { [%clk 0:12:37] } 34... g5 { [%eval -2.01] [%clk 0:01:02] } 35. Bd1?! { [%eval -2.69] } { Inaccuracy. Bc2 was best. } { [%clk 0:09:15] } 35... Be4 { [%eval -2.53] [%clk 0:00:43] } 36. Re3 { [%eval -2.76] [%clk 0:08:47] } 36... f5 { [%eval -2.46] [%clk 0:00:45] } 37. Bf3 { [%eval -3.01] [%clk 0:08:07] } 37... d5 { [%eval -3.06] [%clk 0:00:32] } 38. Kf1 { [%eval -3.23] [%clk 0:07:24] } 38... Kd6 { [%eval -3.15] [%clk 0:00:32] } 39. Rc3?! { [%eval -4.58] } { Inaccuracy. h3 was best. } { [%clk 0:06:00] } 39... g4 { [%eval -4.16] [%clk 0:00:32] } 40. Be2 { [%eval -4.51] [%clk 0:05:15] } 40... Ra2 { [%eval -4.19] [%clk 0:00:32] } 41. g3?! { [%eval -5.45] } { Inaccuracy. Rc8 was best. } { [%clk 0:28:45] } 41... h3 { [%eval -5.24] [%clk 0:28:50] } 42. Nd3 { [%eval -5.64] [%clk 0:28:59] } 42... d4 { [%eval -5.41] [%clk 0:25:23] } 43. Rc8 { [%eval -6.37] [%clk 0:20:46] } 43... Bxd3 { [%eval -6.26] [%clk 0:25:40] } 44. Bxd3 { [%eval -6.2] [%clk 0:21:12] } 44... Rxh2 { [%eval -6.14] [%clk 0:26:05] } 45. Ra8 { [%eval -6.66] [%clk 0:21:04] } 45... Rh1+ { [%eval -6.95] [%clk 0:25:18] } 46. Kf2 { [%eval -6.78] [%clk 0:21:23] } 46... h2 { [%eval -6.58] [%clk 0:20:08] } 47. Rh8 { [%eval -6.78] [%clk 0:20:24] } 47... Rd1 { [%eval -7.26] [%clk 0:20:09] } 48. Bf1 { [%eval -7.24] [%clk 0:20:49] } 48... Rd2+ { [%eval -7.27] [%clk 0:20:34] } 49. Ke1 { [%eval -7.09] [%clk 0:20:54] } 49... Ra2 { [%eval -6.65] [%clk 0:20:59] } 0-1