Event: Round 4: Barbosa, Oliver - Kovalchuk, Igor
Date: 2024-08-31
White: Barbosa, Oliver
WhiteTitle: GM
WhiteElo: 2439
Black: Kovalchuk, Igor
BlackElo: 2057
Result: 1-0
ECO: E05
Opening: Catalan Opening: Open Defense, Classical Line
Variant: Standard

1. d4 { [%eval 0.17] [%clk 1:18:47] } 1... d5 { [%eval 0.23] [%clk 1:30:28] } 2. c4 { [%eval 0.19] [%clk 1:18:59] } 2... e6 { [%eval 0.17] [%clk 1:30:50] } 3. Nf3 { [%eval 0.16] [%clk 1:19:04] } 3... Nf6 { [%eval 0.17] [%clk 1:31:13] } 4. g3 { [%eval 0.15] [%clk 1:18:55] } 4... Be7 { [%eval 0.34] [%clk 1:31:33] } 5. Bg2 { [%eval 0.16] [%clk 1:19:04] } 5... O-O { [%eval 0.28] [%clk 1:31:55] } 6. O-O { [%eval 0.17] [%clk 1:18:53] } 6... dxc4 { [%eval 0.16] [%clk 1:32:22] } 7. Nc3 { [%eval -0.09] [%clk 1:18:05] } 7... Nc6 { [%eval -0.15] [%clk 1:27:55] } 8. e4 { [%eval -0.34] [%clk 1:18:04] } 8... Rb8 { [%eval -0.21] [%clk 1:26:56] } 9. Qe2 { [%eval -0.39] [%clk 1:14:07] } 9... b5 { [%eval -0.24] [%clk 1:23:42] } 10. Rd1 { [%eval -0.15] [%clk 1:12:51] } 10... Qe8 { [%eval -0.19] [%clk 1:19:12] } 11. a4 { [%eval -0.18] [%clk 1:00:15] } 11... b4?! { [%eval 0.39] } { Inaccuracy. a6 was best. } { [%clk 1:15:29] } 12. Nb5 { [%eval 0.44] [%clk 0:59:45] } 12... Na5 { [%eval 0.46] [%clk 1:07:39] } 13. Bf4 { [%eval 0.5] [%clk 0:56:24] } 13... Bb7? { [%eval 2.2] } { Mistake. Rb7 was best. } { [%clk 0:46:09] } 14. Nxc7 { [%eval 2.15] [%clk 0:49:38] } 14... Qc8 { [%eval 2.18] [%clk 0:45:33] } 15. d5 { [%eval 1.84] [%clk 0:49:33] } 15... Bc5?! { [%eval 2.72] } { Inaccuracy. exd5 was best. } { [%clk 0:39:09] } 16. Bh3?! { [%eval 2.01] } { Inaccuracy. dxe6 was best. } { [%clk 0:44:50] } 16... Kh8?! { [%eval 2.92] } { Inaccuracy. Nxe4 was best. } { [%clk 0:34:49] } 17. Ng5 { [%eval 2.63] [%clk 0:15:10] } 17... h6 { [%eval 2.41] [%clk 0:28:42] } 18. e5? { [%eval 0.92] } { Mistake. Ncxe6 was best. } { [%clk 0:11:27] } 18... Ng8? { [%eval 2.28] } { Mistake. Nh7 was best. } { [%clk 0:24:54] } 19. Ngxe6 { [%eval 1.89] [%clk 0:05:57] } 19... fxe6 { [%eval 2.31] [%clk 0:24:05] } 20. Nxe6 { [%eval 2.18] [%clk 0:06:12] } 20... Nb3 { [%eval 2.13] [%clk 0:21:14] } 21. Qg4?? { [%eval 0.0] } { Blunder. Nxf8 was best. } { [%clk 0:05:58] } 21... Qd7? { [%eval 1.39] } { Mistake. g5 was best. } { [%clk 0:17:12] } 22. Qg6?! { [%eval 0.77] } { Inaccuracy. Rab1 was best. } { [%clk 0:04:11] } 22... Qf7 { [%eval 0.79] [%clk 0:14:22] } 23. Nxf8 { [%eval 0.82] [%clk 0:03:58] } 23... Rxf8 { [%eval 0.7] [%clk 0:14:23] } 24. Qxf7 { [%eval 0.73] [%clk 0:04:03] } 24... Rxf7 { [%eval 1.0] [%clk 0:14:45] } 25. e6? { [%eval -0.27] } { Mistake. d6 was best. } { [%clk 0:04:00] } 25... Rxf4 { [%eval -0.29] [%clk 0:14:12] } 26. gxf4 { [%eval -0.26] [%clk 0:03:58] } 26... Nxa1 { [%eval -0.28] [%clk 0:14:16] } 27. d6 { [%eval -0.15] [%clk 0:04:25] } 27... Bxd6 { [%eval -0.18] [%clk 0:07:15] } 28. Rxd6 { [%eval -0.23] [%clk 0:04:49] } 28... c3 { [%eval -0.2] [%clk 0:07:32] } 29. bxc3 { [%eval -0.26] [%clk 0:04:53] } 29... bxc3 { [%eval -0.49] [%clk 0:07:20] } 30. Rd1 { [%eval -0.78] [%clk 0:03:18] } 30... Nb3 { [%eval -0.84] [%clk 0:06:21] } 31. Bf5 { [%eval -0.71] [%clk 0:03:32] } 31... g6?! { [%eval 0.0] } { Inaccuracy. Nd2 was best. } { [%clk 0:05:18] } 32. Bxg6 { [%eval 0.0] [%clk 0:02:52] } 32... Kg7 { [%eval 0.0] [%clk 0:03:01] } 33. Bc2 { [%eval 0.0] [%clk 0:02:43] } 33... Nd2 { [%eval 0.0] [%clk 0:03:01] } 34. Rc1 { [%eval -0.46] [%clk 0:01:54] } 34... Nf6 { [%eval -0.5] [%clk 0:01:47] } 35. f3?! { [%eval -1.23] } { Inaccuracy. f5 was best. } { [%clk 0:01:23] } 35... Nxf3+? { [%eval 0.0] } { Mistake. Bxf3 was best. } { [%clk 0:01:49] } 36. Kf2 { [%eval 0.06] [%clk 0:01:49] } 36... Ng4+ { [%eval 0.23] [%clk 0:01:30] } 37. Kg3 { [%eval 0.0] [%clk 0:01:55] } 37... Ne3?? { [%eval 2.43] } { Blunder. Nf6 was best. } { [%clk 0:01:29] } 38. Bd3? { [%eval 0.91] } { Mistake. e7 was best. } { [%clk 0:02:20] } 38... Kf6?? { [%eval 3.16] } { Blunder. Nd4 was best. } { [%clk 0:01:22] } 39. Rxc3 { [%eval 3.01] [%clk 0:02:19] } 39... Kxe6 { [%eval 3.46] [%clk 0:01:14] } 40. Rc7 { [%eval 3.47] [%clk 0:02:29] } 40... Bd5 { [%eval 3.43] [%clk 0:01:17] } 41. Rxa7 { [%eval 3.4] [%clk 0:02:33] } 41... Nd4 { [%eval 3.31] [%clk 0:01:09] } 42. Ra6+ { [%eval 3.03] [%clk 0:02:33] } 42... Kf7 { [%eval 3.68] [%clk 0:01:18] } 43. a5 { [%eval 3.68] [%clk 0:02:33] } 43... Nc6 { [%eval 3.81] [%clk 0:01:23] } 44. Bb5 { [%eval 3.73] [%clk 0:01:30] } 44... Nf5+ { [%eval 4.16] [%clk 0:01:41] } 45. Kf2 { [%eval 4.04] [%clk 0:01:44] } 45... Nfd4 { [%eval 4.25] [%clk 0:01:58] } 46. Bf1 { [%eval 3.62] [%clk 0:01:21] } 46... Ke7 { [%eval 3.57] [%clk 0:01:16] } 47. Ra8 { [%eval 3.56] [%clk 0:01:46] } 47... Nd8 { [%eval 4.19] [%clk 0:00:58] } 48. Ra7+ { [%eval 4.08] [%clk 0:02:07] } 48... Kd6 { [%eval 4.1] [%clk 0:01:14] } 49. a6 { [%eval 4.15] [%clk 0:02:30] } 49... N4e6 { [%eval 4.48] [%clk 0:01:25] } 50. Rh7 { [%eval 4.52] [%clk 0:01:58] } 50... Nxf4 { [%eval 4.45] [%clk 0:01:36] } 51. a7 { [%eval 4.33] [%clk 0:02:19] } 51... Bc6?! { [%eval 5.51] } { Inaccuracy. Be4 was best. } { [%clk 0:01:36] } 52. Bb5 { [%eval 5.34] [%clk 0:02:12] } 52... Ba8 { [%eval 6.81] [%clk 0:01:43] } 53. Rd7+ { [%eval 6.6] [%clk 0:02:36] } 1-0