Event: Round 4: Derek Ma - Sam Massick
Date: 2023-03-25
White: Derek Ma
Black: Sam Massick
Result: 0-1
ECO: B42
Opening: Sicilian Defense: Kan Variation, Polugaevsky Variation
Variant: Standard

1. e4 { [%eval 0.36] [%clk 1:23:17] } 1... c5 { [%eval 0.32] [%clk 1:30:37] } 2. Nf3 { [%eval 0.0] [%clk 1:23:37] } 2... e6 { [%eval 0.34] [%clk 1:31:01] } 3. d4 { [%eval 0.42] [%clk 1:24:03] } 3... cxd4 { [%eval 0.37] [%clk 1:31:24] } 4. Nxd4 { [%eval 0.4] [%clk 1:24:28] } 4... a6 { [%eval 0.58] [%clk 1:31:51] } 5. Bd3 { [%eval 0.42] [%clk 1:24:33] } 5... Bc5 { [%eval 0.52] [%clk 1:31:48] } 6. Nb3 { [%eval 0.47] [%clk 1:24:49] } 6... Ba7 { [%eval 0.63] [%clk 1:31:37] } 7. Qe2 { [%eval 0.49] [%clk 1:25:00] } 7... Ne7 { [%eval 0.49] [%clk 1:31:42] } 8. Be3 { [%eval 0.51] } 8... O-O { [%eval 0.49] [%clk 1:31:27] } 9. Bxa7 { [%eval 0.46] [%clk 1:20:35] } 9... Rxa7 { [%eval 0.47] [%clk 1:31:55] } 10. c4 { [%eval 0.22] [%clk 1:20:03] } 10... d5 { [%eval 0.34] [%clk 1:29:45] } 11. exd5 { [%eval 0.0] [%clk 1:11:24] } 11... exd5 { [%eval 0.12] [%clk 1:29:55] } 12. c5 { [%eval 0.01] [%clk 1:09:53] } 12... a5 { [%eval 0.13] [%clk 1:26:24] } 13. O-O { [%eval -0.24] [%clk 1:07:44] } 13... a4 { [%eval -0.31] [%clk 1:25:06] } 14. Nd4 { [%eval -0.26] [%clk 1:07:06] } 14... Nbc6 { [%eval -0.27] [%clk 1:25:09] } 15. Nb5 { [%eval -0.34] [%clk 1:01:15] } 15... Ra5 { [%eval -0.45] [%clk 1:23:47] } 16. N1c3 { [%eval -0.32] [%clk 0:53:19] } 16... b6 { [%eval -0.32] [%clk 1:22:23] } 17. cxb6 { [%eval -0.49] [%clk 0:49:34] } 17... Qxb6 { [%eval -0.23] [%clk 1:22:51] } 18. Rad1?! { [%eval -0.8] } { Inaccuracy. b3 was best. } { [%clk 0:46:41] } 18... Be6 { [%eval -0.73] [%clk 1:18:54] } 19. Rd2 { [%eval -1.22] [%clk 0:31:57] } 19... Rb8?! { [%eval -0.65] } { Inaccuracy. d4 was best. } { [%clk 1:11:13] } 20. Qd1 { [%eval -0.72] [%clk 0:28:21] } 20... d4 { [%eval -0.69] [%clk 1:04:19] } 21. Nxa4 { [%eval -0.71] [%clk 0:28:16] } 21... Qd8 { [%eval -0.79] [%clk 1:03:01] } 22. Na3 { [%eval -0.72] [%clk 0:26:00] } 22... Bxa2 { [%eval -0.81] [%clk 1:02:33] } 23. Bc4 { [%eval -0.71] [%clk 0:22:12] } 23... Bxc4 { [%eval -0.73] [%clk 1:02:09] } 24. Nxc4 { [%eval -0.72] [%clk 0:22:37] } 24... Rd5 { [%eval -0.84] [%clk 1:01:14] } 25. Qf3 { [%eval -0.93] [%clk 0:21:04] } 25... Rb4 { [%eval -0.74] [%clk 0:59:40] } 26. b3 { [%eval -0.79] [%clk 0:21:03] } 26... Qb8 { [%eval -0.81] [%clk 0:59:02] } 27. Rd3 { [%eval -0.69] [%clk 0:18:53] } 27... Rdb5 { [%eval -0.82] [%clk 0:57:38] } 28. Rfd1 { [%eval -1.26] [%clk 0:14:00] } 28... Rxb3 { [%eval -1.41] [%clk 0:57:31] } 29. Nc5 { [%eval -1.6] [%clk 0:14:03] } 29... Rb1 { [%eval -1.64] [%clk 0:56:10] } 30. Nd7? { [%eval -3.47] } { Mistake. Ne4 was best. } { [%clk 0:11:20] } 30... Qc7 { [%eval -3.64] [%clk 0:55:51] } 31. Qg4?! { [%eval -4.57] } { Inaccuracy. Qh3 was best. } { [%clk 0:08:39] } 31... Ng6 { [%eval -4.4] [%clk 0:54:27] } 32. Na3 { [%eval -5.24] [%clk 0:07:25] } 32... Rxd1+ { [%eval -5.08] [%clk 0:54:07] } 33. Rxd1 { [%eval -5.05] [%clk 0:07:27] } 33... Rd5 { [%eval -4.82] [%clk 0:53:56] } 34. Re1 { [%eval -5.42] [%clk 0:06:10] } 34... Rxd7 { [%eval -5.13] [%clk 0:53:02] } 0-1