Event: Round 5: Mason, Donald J - Yu, Rock
Date: 2024-06-22
White: Mason, Donald J
WhiteElo: 2014
Black: Yu, Rock
BlackElo: 1939
Result: 1/2-1/2
ECO: E24
Opening: Nimzo-Indian Defense: Sämisch Variation
Variant: Standard

1. d4 { [%eval 0.16] [%clk 1:30:56] } 1... Nf6 { [%eval 0.17] [%clk 1:30:02] } 2. c4 { [%eval 0.21] [%clk 1:31:13] } 2... e6 { [%eval 0.11] [%clk 1:30:31] } 3. Nc3 { [%eval 0.0] [%clk 1:31:14] } 3... Bb4 { [%eval 0.17] [%clk 1:30:56] } 4. a3 { [%eval 0.0] [%clk 1:31:16] } 4... Bxc3+ { [%eval -0.01] [%clk 1:31:21] } 5. bxc3 { [%eval -0.09] [%clk 1:31:40] } 5... b6 { [%eval -0.02] [%clk 1:31:48] } 6. f3 { [%eval -0.14] [%clk 1:27:11] } 6... Nc6 { [%eval 0.0] [%clk 1:32:15] } 7. Bg5 { [%eval -0.28] [%clk 1:24:33] } 7... d6 { [%eval -0.28] [%clk 1:29:31] } 8. e4 { [%eval -0.41] [%clk 1:17:09] } 8... Na5 { [%eval -0.35] [%clk 1:29:25] } 9. Bd3 { [%eval -0.35] [%clk 1:13:48] } 9... Qd7 { [%eval 0.19] [%clk 1:29:11] } 10. e5?! { [%eval -0.41] } { Inaccuracy. Ne2 was best. } { [%clk 0:59:31] } 10... Ng8?! { [%eval 0.41] } { Inaccuracy. dxe5 was best. } { [%clk 1:16:04] } 11. Be4? { [%eval -0.81] } { Mistake. f4 was best. } { [%clk 0:49:22] } 11... Rb8 { [%eval -0.8] [%clk 1:13:08] } 12. Ne2 { [%eval -1.04] [%clk 0:43:00] } 12... Nxc4 { [%eval -0.99] [%clk 1:11:30] } 13. exd6 { [%eval -0.83] [%clk 0:34:52] } 13... Nxd6 { [%eval -0.47] [%clk 1:08:44] } 14. Bd3 { [%eval -0.57] [%clk 0:33:11] } 14... h6 { [%eval -0.52] [%clk 1:04:35] } 15. Bd2 { [%eval -0.63] [%clk 0:32:46] } 15... Nf6 { [%eval -0.52] [%clk 1:03:59] } 16. O-O { [%eval -0.6] [%clk 0:33:07] } 16... Bb7 { [%eval -0.33] [%clk 1:00:12] } 17. a4 { [%eval -0.56] [%clk 0:31:59] } 17... O-O { [%eval -0.3] [%clk 0:56:20] } 18. Qc1 { [%eval -0.29] [%clk 0:32:06] } 18... Nf5 { [%eval -0.29] [%clk 0:54:07] } 19. Ng3 { [%eval -0.23] [%clk 0:29:32] } 19... Nh4? { [%eval 0.96] } { Mistake. Rfe8 was best. } { [%clk 0:48:48] } 20. Bxh6 { [%eval 0.77] [%clk 0:27:48] } 20... gxh6 { [%eval 0.84] [%clk 0:47:38] } 21. Qf4 { [%eval 1.01] [%clk 0:27:04] } 21... Ng6? { [%eval 2.71] } { Mistake. Nf5 was best. } { [%clk 0:29:47] } 22. Qxf6 { [%eval 2.72] [%clk 0:26:47] } 22... Qd8 { [%eval 2.72] [%clk 0:30:16] } 23. Nh5 { [%eval 2.72] [%clk 0:26:06] } 23... Qxf6 { [%eval 2.77] [%clk 0:30:12] } 24. Nxf6+ { [%eval 2.75] [%clk 0:26:29] } 24... Kh8 { [%eval 3.44] [%clk 0:28:34] } 25. Nd7 { [%eval 2.92] [%clk 0:15:48] } 25... Nf4 { [%eval 2.76] [%clk 0:27:00] } 26. Be4 { [%eval 2.22] [%clk 0:13:37] } 26... Ba6 { [%eval 2.11] [%clk 0:26:05] } 27. Rfe1 { [%eval 1.53] [%clk 0:09:37] } 27... Rg8 { [%eval 1.41] [%clk 0:26:01] } 28. Nxb8? { [%eval 0.0] } { Mistake. g3 was best. } { [%clk 0:09:00] } 28... Nh3+ { [%clk 0:26:17] } 1/2-1/2