Event: 49th Annual World Open
Site: ChessKast.com
Date: 2021-07-02
White: Matthew O'Brien
Black: Zaven Andriasian
Result: 0-1
ECO: B90
Opening: Sicilian Defense: Najdorf Variation, English Attack, Anti-English
Variant: Standard

1. e4 { [%eval 0.24] [%clk 1:30:30] } 1... c5 { [%eval 0.32] [%clk 1:30:29] } 2. Nf3 { [%eval 0.0] [%clk 1:30:58] } 2... d6 { [%eval 0.0] [%clk 1:30:59] } 3. d4 { [%eval 0.15] [%clk 1:31:27] } 3... cxd4 { [%eval 0.13] [%clk 1:31:28] } 4. Nxd4 { [%eval 0.0] [%clk 1:31:57] } 4... Nf6 { [%eval 0.14] [%clk 1:31:58] } 5. Nc3 { [%eval 0.0] } 5... a6 { [%eval 0.21] [%clk 1:32:27] } 6. Be3 { [%eval 0.13] [%clk 1:32:26] } 6... Ng4 { [%eval 0.23] [%clk 1:32:56] } 7. Bc1 { [%eval 0.27] [%clk 1:32:55] } 7... Nc6 { [%eval 0.2] [%clk 1:33:25] } 8. Be2 { [%eval 0.45] [%clk 1:33:25] } 8... Nf6 { [%eval 0.31] [%clk 1:33:54] } 9. Bg5 { [%eval 0.46] [%clk 1:33:54] } 9... e6 { [%eval 0.47] [%clk 1:34:24] } 10. Qd2 { [%eval 0.37] [%clk 1:32:32] } 10... Be7 { [%eval 0.47] [%clk 1:33:40] } 11. O-O-O { [%eval 0.25] [%clk 1:31:20] } 11... Bd7 { [%eval 0.16] [%clk 1:29:09] } 12. f4 { [%eval 0.33] [%clk 1:26:40] } 12... h6 { [%eval 0.13] [%clk 1:22:41] } 13. Bh4 { [%eval 0.13] [%clk 1:26:23] } 13... Rc8 { [%eval 0.57] [%clk 1:21:44] } 14. Rhf1?! { [%eval 0.03] } { Inaccuracy. Nb3 was best. } { [%clk 1:15:23] } 14... b5 { [%eval -0.06] [%clk 1:15:57] } 15. a3 { [%eval 0.0] [%clk 1:11:44] } 15... O-O { [%eval 0.16] [%clk 1:12:10] } 16. Nxc6?! { [%eval -0.66] } { Inaccuracy. Nb3 was best. } { [%clk 1:02:43] } 16... Bxc6 { [%eval -1.03] [%clk 1:11:52] } 17. Bf3 { [%eval -1.25] [%clk 1:01:52] } 17... Nxe4? { [%eval -0.08] } { Mistake. Qc7 was best. } { [%clk 1:07:29] } 18. Nxe4 { [%eval -0.12] [%clk 0:59:17] } 18... Bxh4 { [%eval -0.23] [%clk 1:07:48] } 19. Nxd6 { [%eval -0.19] [%clk 0:58:09] } 19... Rc7 { [%eval -0.12] [%clk 1:06:51] } 20. Qe3?! { [%eval -1.02] } { Inaccuracy. Kb1 was best. } { [%clk 0:50:21] } 20... Qb8 { [%eval -1.29] [%clk 1:06:09] } 21. g3?! { [%eval -2.14] } { Inaccuracy. Kb1 was best. } { [%clk 0:44:47] } 21... Be7 { [%eval -2.4] [%clk 1:05:56] } 22. Bxc6 { [%eval -1.91] [%clk 0:39:30] } 22... Rxc6 { [%eval -2.09] [%clk 1:06:20] } 23. Nf5 { [%eval -2.09] [%clk 0:38:46] } 23... Bf6 { [%eval -2.09] [%clk 1:05:56] } 24. Nd4 { [%eval -1.99] [%clk 0:38:14] } 24... Rc4 { [%eval -1.95] [%clk 1:06:13] } 25. b3?! { [%eval -3.09] } { Inaccuracy. Rd3 was best. } { [%clk 0:37:12] } 25... Rc7 { [%eval -2.52] [%clk 1:06:33] } 26. Rf2 { [%eval -2.85] [%clk 0:33:21] } 26... Rfc8 { [%eval -2.72] [%clk 1:06:18] } 27. Qe4?! { [%eval -3.71] } { Inaccuracy. Rd3 was best. } { [%clk 0:31:53] } 27... Qb6 { [%eval -3.55] [%clk 1:06:05] } 28. Rfd2?! { [%eval -4.67] } { Inaccuracy. Rd3 was best. } { [%clk 0:28:25] } 28... Qc5 { [%eval -5.27] [%clk 1:04:46] } 29. Kb2 { [%eval -5.68] [%clk 0:28:18] } 29... Bxd4+?! { [%eval -4.39] } { Inaccuracy. Rd7 was best. } { [%clk 0:58:02] } 30. Rxd4 { [%eval -4.93] [%clk 0:27:59] } 30... Qxc2+ { [%eval -4.53] [%clk 0:58:26] } 31. Qxc2 { [%eval -4.69] [%clk 0:28:05] } 31... Rxc2+ { [%eval -4.38] [%clk 0:58:50] } 32. Kb1 { [%eval -4.39] [%clk 0:28:32] } 32... Rxh2 { [%eval -4.36] [%clk 0:58:23] } 33. Rd8+ { [%eval -4.62] [%clk 0:28:27] } 33... Rxd8 { [%eval -4.53] [%clk 0:58:49] } 34. Rxd8+ { [%eval -4.37] [%clk 0:28:55] } 34... Kh7 { [%eval -4.36] [%clk 0:59:18] } 35. Ra8 { [%eval -4.58] [%clk 0:28:31] } 35... Rg2 { [%eval -4.06] [%clk 0:59:42] } 36. Rxa6 { [%eval -4.82] [%clk 0:28:53] } 36... Rxg3 { [%eval -4.44] [%clk 1:00:05] } 37. Kc2 { [%eval -4.57] [%clk 0:28:36] } 37... g5 { [%eval -4.5] [%clk 0:52:21] } 38. f5? { [%eval -8.11] } { Mistake. fxg5 was best. } { [%clk 0:28:11] } 38... exf5 { [%eval -8.17] [%clk 0:51:55] } 39. Rf6 { [%eval -8.63] [%clk 0:28:26] } 39... Rf3 { [%eval -8.17] [%clk 0:50:12] } 40. Rxf7+ { [%eval -8.35] [%clk 0:28:46] } 40... Kg6 { [%eval -7.73] [%clk 0:50:37] } 41. Rb7 { [%eval -8.32] [%clk 0:28:53] } 41... g4 { [%eval -8.29] [%clk 0:51:02] } 42. Rxb5 { [%eval -8.78] [%clk 0:29:05] } 42... g3 { [%eval -7.98] [%clk 0:51:27] } 43. Rb8 { [%eval -8.4] [%clk 0:29:14] } 43... f4 { [%eval -8.64] [%clk 0:51:00] } 44. a4 { [%eval -8.48] [%clk 0:25:24] } 44... Rf2+ { [%eval -8.24] [%clk 0:51:26] } 45. Kc3 { [%eval -8.01] [%clk 0:25:28] } 45... g2 { [%eval -8.34] [%clk 0:51:51] } 46. a5 { [%eval -8.86] [%clk 0:25:13] } 46... Rf3+ { [%eval -8.67] [%clk 0:51:52] } 47. Kc4 { [%eval -8.09] [%clk 0:25:33] } 47... Rg3 { [%eval -9.49] [%clk 0:52:16] } 0-1