Event: Round 5: Kovchan, Alexander - Yu, Rock
Date: 2025-03-01
White: Kovchan, Alexander
WhiteTitle: GM
WhiteElo: 2453
Black: Yu, Rock
BlackElo: 2004
Result: 1-0
ECO: B29
Opening: Sicilian Defense: Nimzowitsch Variation, Advance Variation
Variant: Standard
TimeControl: 15+10

1. e4 { [%eval 0.18] [%clk 0:15:18] } 1... c5 { [%eval 0.25] [%clk 0:15:16] } 2. Nf3 { [%eval 0.2] [%clk 0:15:26] } 2... Nf6 { [%eval 0.56] [%clk 0:15:24] } 3. e5 { [%eval 0.5] [%clk 0:15:29] } 3... Nd5 { [%eval 0.44] [%clk 0:15:32] } 4. Nc3 { [%eval 0.57] [%clk 0:15:31] } 4... e6 { [%eval 0.64] [%clk 0:15:40] } 5. Bc4 { [%eval 0.16] [%clk 0:15:08] } 5... Nb6 { [%eval 0.16] [%clk 0:15:42] } 6. Bd3 { [%eval 0.0] [%clk 0:14:43] } 6... d6 { [%eval 0.06] [%clk 0:15:12] } 7. O-O { [%eval 0.1] [%clk 0:14:32] } 7... Nc6 { [%eval 0.14] [%clk 0:15:06] } 8. exd6 { [%eval -0.08] [%clk 0:14:06] } 8... Bxd6 { [%eval 0.01] [%clk 0:15:13] } 9. Be4 { [%eval -0.09] [%clk 0:14:01] } 9... Bd7 { [%eval 0.16] [%clk 0:15:03] } 10. d3 { [%eval -0.06] [%clk 0:13:35] } 10... h6 { [%eval -0.03] [%clk 0:14:36] } 11. Nb5 { [%eval -0.02] [%clk 0:13:22] } 11... Bb8 { [%eval -0.03] [%clk 0:14:31] } 12. Be3? { [%eval -1.54] } { Mistake. Re1 was best. } { [%clk 0:12:49] } 12... a6? { [%eval 0.0] } { Mistake. f5 was best. } { [%clk 0:13:53] } 13. Nc3 { [%eval 0.07] [%clk 0:12:18] } 13... Qe7 { [%eval 0.05] [%clk 0:13:56] } 14. Re1 { [%eval -0.21] [%clk 0:11:55] } 14... O-O { [%eval -0.21] [%clk 0:13:18] } 15. d4 { [%eval -0.11] [%clk 0:10:49] } 15... cxd4 { [%eval -0.13] [%clk 0:13:02] } 16. Nxd4 { [%eval -0.1] [%clk 0:10:56] } 16... Nc4 { [%eval -0.01] [%clk 0:12:32] } 17. Nxc6 { [%eval -0.02] [%clk 0:09:41] } 17... Bxc6 { [%eval 0.06] [%clk 0:12:32] } 18. Bxc6 { [%eval 0.04] [%clk 0:09:31] } 18... bxc6 { [%eval 0.05] [%clk 0:12:08] } 19. Qg4 { [%eval -0.03] [%clk 0:09:17] } 19... Nxe3 { [%eval -0.01] [%clk 0:10:49] } 20. Rxe3 { [%eval -0.03] [%clk 0:09:25] } 20... Rd8 { [%eval 0.0] [%clk 0:09:36] } 21. Rae1 { [%eval -0.1] [%clk 0:08:30] } 21... a5 { [%eval 0.02] [%clk 0:09:06] } 22. Qc4?! { [%eval -0.54] } { Inaccuracy. Qf3 was best. } { [%clk 0:06:58] } 22... Qc7?! { [%eval 0.12] } { Inaccuracy. Qb4 was best. } { [%clk 0:06:38] } 23. g3 { [%eval 0.07] [%clk 0:07:01] } 23... Qb6 { [%eval 0.09] [%clk 0:06:39] } 24. b3 { [%eval 0.01] [%clk 0:06:56] } 24... Ba7 { [%eval 0.04] [%clk 0:06:16] } 25. Qe2 { [%eval 0.08] [%clk 0:05:35] } 25... Qb4 { [%eval 0.0] [%clk 0:05:47] } 26. Rf3 { [%eval 0.12] [%clk 0:05:34] } 26... Rd7 { [%eval 0.18] [%clk 0:05:46] } 27. Ne4 { [%eval -0.09] [%clk 0:05:14] } 27... Rad8 { [%eval -0.11] [%clk 0:05:35] } 28. Rf4 { [%eval -0.15] [%clk 0:05:15] } 28... Qxe1+ { [%eval -0.09] [%clk 0:04:46] } 29. Qxe1 { [%eval -0.02] [%clk 0:05:21] } 29... Rd1 { [%eval -0.06] [%clk 0:04:55] } 30. Kf1 { [%eval -0.12] [%clk 0:04:58] } 30... Rxe1+ { [%eval 0.0] [%clk 0:04:39] } 31. Kxe1 { [%eval 0.02] [%clk 0:05:06] } 31... Bd4 { [%eval 0.26] [%clk 0:04:47] } 32. Ke2 { [%eval -0.16] [%clk 0:04:57] } 32... e5?! { [%eval 0.81] } { Inaccuracy. f5 was best. } { [%clk 0:03:09] } 33. Rf3 { [%eval 0.78] [%clk 0:05:04] } 33... Kf8 { [%eval 0.75] [%clk 0:03:17] } 34. Nd2 { [%eval 0.44] [%clk 0:04:39] } 34... Ke7 { [%eval 0.46] [%clk 0:02:38] } 35. Nc4 { [%eval 0.41] [%clk 0:04:39] } 35... Ke6?! { [%eval 1.52] } { Inaccuracy. Rd5 was best. } { [%clk 0:02:24] } 36. c3? { [%eval 0.03] } { Mistake. Nxa5 was best. } { [%clk 0:04:17] } 36... e4 { [%eval 0.01] [%clk 0:01:56] } 37. Rf4 { [%eval 0.0] [%clk 0:04:23] } 37... f5 { [%eval 0.0] [%clk 0:01:39] } 38. g4 { [%eval 0.05] [%clk 0:04:27] } 38... Bxc3 { [%eval 0.01] [%clk 0:01:28] } 39. Rxf5 { [%eval 0.0] [%clk 0:04:20] } 39... a4 { [%eval 0.02] [%clk 0:01:32] } 40. bxa4 { [%eval 0.0] [%clk 0:04:09] } 40... Rd4 { [%eval 0.0] [%clk 0:01:20] } 41. Nb6 { [%eval -0.04] [%clk 0:02:11] } 41... Rd2+ { [%eval 0.05] [%clk 0:01:00] } 42. Ke3 { [%eval 0.0] [%clk 0:02:20] } 42... Rxa2 { [%eval 0.05] [%clk 0:01:04] } 43. Rc5 { [%eval 0.01] [%clk 0:02:09] } 43... Bb4 { [%eval 0.08] [%clk 0:01:01] } 44. Rxc6+ { [%eval -0.01] [%clk 0:02:06] } 44... Kf7 { [%eval 0.38] [%clk 0:01:06] } 45. Rc4 { [%eval 0.14] [%clk 0:01:57] } 45... Bd6?! { [%eval 1.16] } { Inaccuracy. Be1 was best. } { [%clk 0:01:10] } 46. h4 { [%eval 0.73] [%clk 0:01:50] } 46... g5?? { [%eval 3.21] } { Blunder. Be7 was best. } { [%clk 0:01:19] } 47. h5 { [%eval 3.12] [%clk 0:01:50] } 47... Bf4+ { [%eval 3.34] [%clk 0:01:26] } 48. Kxe4 { [%eval 3.55] [%clk 0:01:58] } 48... Rxf2 { [%eval 3.5] [%clk 0:01:35] } 49. Rc6 { [%eval 3.5] [%clk 0:01:46] } 49... Rg2 { [%eval 3.62] [%clk 0:01:32] } 50. Kf5 { [%eval 3.35] [%clk 0:01:42] } 50... Re2?! { [%eval 4.76] } { Inaccuracy. Rf2 was best. } { [%clk 0:01:35] } 51. Nc4?! { [%eval 3.23] } { Inaccuracy. Rf6+ was best. } { [%clk 0:01:45] } 51... Ra2?! { [%eval 4.51] } { Inaccuracy. Bh2 was best. } { [%clk 0:01:32] } 52. a5 { [%eval 4.28] [%clk 0:01:52] } 52... Ra4 { [%eval 5.25] [%clk 0:01:41] } 53. a6 { [%eval 5.16] [%clk 0:01:58] } 53... Ke7 { [%eval 5.52] [%clk 0:01:43] } 54. Kg6 { [%eval 5.27] [%clk 0:01:47] } 54... Ra2 { [%eval 6.05] [%clk 0:01:49] } 55. Kxh6 { [%eval 5.74] [%clk 0:01:47] } 55... Kd7 { [%eval 6.76] [%clk 0:01:57] } 56. Rf6 { [%eval 6.82] [%clk 0:01:48] } 56... Ra4 { [%clk 0:02:05] } 57. Nb6+ { [%clk 0:01:57] } 1-0