Event: 2021 US Chess Championship
Site: Saint Louis, United States
Date: 2021-10-13
White: Lenderman, Aleksandr
WhiteElo: 2607
Black: Xiong, Jeffery
BlackElo: 2700
Result: 1/2-1/2
ECO: D35
Opening: Queen's Gambit Declined: Exchange Variation, Positional Variation
Variant: Standard

1. d4 { [%eval 0.0] [%clk 1:30:57] } 1... Nf6 { [%eval 0.28] [%clk 1:30:49] } 2. c4 { [%eval 0.11] [%clk 1:31:22] } 2... e6 { [%eval 0.39] [%clk 1:31:09] } 3. Nc3 { [%eval 0.0] [%clk 1:31:45] } 3... d5 { [%eval 0.33] [%clk 1:28:15] } 4. cxd5 { [%eval 0.16] [%clk 1:32:10] } 4... exd5 { [%eval 0.28] [%clk 1:28:39] } 5. Bg5 { [%eval 0.21] [%clk 1:32:31] } 5... c6 { [%eval 0.32] [%clk 1:29:02] } 6. e3 { [%eval 0.28] [%clk 1:31:44] } 6... Bd6 { [%eval 0.32] [%clk 1:29:18] } 7. Bd3 { [%eval 0.3] [%clk 1:31:47] } 7... O-O { [%eval 0.4] [%clk 1:29:18] } 8. Qc2 { [%eval 0.36] [%clk 1:31:02] } 8... h6 { [%eval 0.39] [%clk 1:29:17] } 9. Bh4 { [%eval 0.41] [%clk 1:31:27] } 9... Re8 { [%eval 0.28] [%clk 1:29:17] } 10. Nge2 { [%eval 0.28] [%clk 1:30:52] } 10... a5 { [%eval 0.32] [%clk 1:27:19] } 11. h3 { [%eval 0.42] [%clk 1:31:02] } 11... Na6 { [%eval 0.43] [%clk 1:22:06] } 12. a3 { [%eval 0.67] [%clk 1:31:25] } 12... Nc7 { [%eval 0.52] [%clk 1:22:19] } 13. O-O { [%eval 0.52] [%clk 1:31:49] } 13... Bd7 { [%eval 0.52] [%clk 1:22:29] } 14. Rae1 { [%eval 0.43] [%clk 1:27:19] } 14... Be7 { [%eval 0.54] [%clk 1:01:20] } 15. Bg3 { [%eval 0.47] [%clk 1:23:09] } 15... Rc8 { [%eval 0.61] [%clk 0:58:46] } 16. Be5 { [%eval 0.42] [%clk 1:20:22] } 16... Be6?! { [%eval 1.14] } { Inaccuracy. Ne6 was best. } { [%clk 0:48:56] } 17. Nf4 { [%eval 1.17] [%clk 1:11:06] } 17... Bd6 { [%eval 1.08] [%clk 0:48:18] } 18. Bxd6 { [%eval 0.79] [%clk 1:09:06] } 18... Qxd6 { [%eval 1.0] [%clk 0:48:45] } 19. Na4 { [%eval 0.84] [%clk 1:08:50] } 19... Rb8 { [%eval 1.0] [%clk 0:41:55] } 20. Rc1 { [%eval 0.7] [%clk 1:02:43] } 20... Ne4?! { [%eval 1.24] } { Inaccuracy. Bd7 was best. } { [%clk 0:35:15] } 21. Rfe1 { [%eval 1.16] [%clk 0:51:13] } 21... Bd7 { [%eval 1.69] [%clk 0:30:00] } 22. f3?! { [%eval 0.86] } { Inaccuracy. Nb6 was best. } { [%clk 0:47:28] } 22... Nf6 { [%eval 0.9] [%clk 0:30:07] } 23. Qc5 { [%eval 0.9] [%clk 0:45:36] } 23... Qxc5 { [%eval 0.72] [%clk 0:24:47] } 24. Nxc5 { [%eval 0.77] [%clk 0:45:47] } 24... Bc8 { [%eval 0.88] [%clk 0:25:15] } 25. Bf1 { [%eval 0.44] [%clk 0:41:07] } 25... Re7 { [%eval 0.66] [%clk 0:17:33] } 26. Na4 { [%eval 0.38] [%clk 0:35:55] } 26... Bf5 { [%eval 0.37] [%clk 0:14:11] } 27. g4 { [%eval 0.4] [%clk 0:33:05] } 27... g5 { [%eval 0.47] [%clk 0:14:39] } 28. gxf5? { [%eval -0.7] } { Mistake. Nd3 was best. } { [%clk 0:30:44] } 28... gxf4 { [%eval -0.52] [%clk 0:15:05] } 29. exf4 { [%eval -0.68] [%clk 0:30:25] } 29... Rxe1 { [%eval -0.77] [%clk 0:13:21] } 30. Rxe1 { [%eval -0.31] [%clk 0:30:50] } 30... Re8 { [%eval -0.25] [%clk 0:12:56] } 31. Rc1 { [%eval -0.28] [%clk 0:26:05] } 31... Nd7 { [%eval -0.31] [%clk 0:12:32] } 32. Kf2 { [%eval -0.16] [%clk 0:16:22] } 32... Kg7 { [%eval -0.29] [%clk 0:12:44] } 33. Bd3 { [%eval -0.35] [%clk 0:16:11] } 33... Ra8 { [%eval -0.3] [%clk 0:08:44] } 34. Nc3 { [%eval -0.36] [%clk 0:15:23] } 34... Nf6 { [%eval -0.37] [%clk 0:07:30] } 35. Na4 { [%eval -0.36] [%clk 0:12:29] } 35... Nd7 { [%eval -0.49] [%clk 0:07:57] } 36. Nc3 { [%eval -0.36] [%clk 0:12:38] } 36... Nf6 { [%eval -0.24] [%clk 0:06:02] } 37. Na4 { [%eval -0.37] [%clk 0:13:04] } 37... Nd7 { [%eval 0.0] [%clk 0:01:12] } 38. Nc3 { [%eval -0.22] } 1/2-1/2