Event: 2021 US Chess Championship
Site: Saint Louis, United States
Date: 2021-10-08
White: Xiong, Jeffery
WhiteElo: 2700
Black: Sevian, Samuel
BlackElo: 2654
Result: 0-1
ECO: E03
Opening: Catalan Opening: Open Defense
Variant: Standard

1. d4 { [%eval 0.0] [%clk 1:30:54] } 1... Nf6 { [%eval 0.27] [%clk 1:30:49] } 2. c4 { [%eval 0.11] [%clk 1:31:07] } 2... e6 { [%eval 0.39] [%clk 1:31:08] } 3. g3 { [%eval 0.24] [%clk 1:31:13] } 3... d5 { [%eval 0.16] [%clk 1:30:56] } 4. Bg2 { [%eval 0.13] [%clk 1:31:23] } 4... dxc4 { [%eval 0.23] [%clk 1:30:46] } 5. Qa4+ { [%eval 0.08] [%clk 1:31:34] } 5... Nbd7 { [%eval 0.18] [%clk 1:22:20] } 6. Qxc4 { [%eval 0.09] [%clk 1:30:59] } 6... c5 { [%eval 0.15] [%clk 1:21:35] } 7. Nf3 { [%eval 0.05] [%clk 1:31:00] } 7... a6 { [%eval 0.09] [%clk 1:20:49] } 8. Qb3 { [%eval 0.11] [%clk 1:31:08] } 8... cxd4 { [%eval 0.35] [%clk 1:18:18] } 9. Nxd4 { [%eval 0.42] [%clk 1:30:02] } 9... Nc5 { [%eval 0.34] [%clk 1:16:03] } 10. Qe3 { [%eval 0.37] [%clk 1:30:15] } 10... Nd5 { [%eval 0.26] [%clk 1:06:47] } 11. Qd2 { [%eval 0.21] [%clk 1:29:06] } 11... Be7 { [%eval 0.67] [%clk 0:59:01] } 12. O-O { [%eval 0.92] [%clk 1:25:19] } 12... O-O { [%eval 0.91] [%clk 0:59:12] } 13. Rd1 { [%eval 0.85] [%clk 1:19:50] } 13... Qb6 { [%eval 0.84] [%clk 0:58:19] } 14. Nc3 { [%eval 0.84] [%clk 1:16:42] } 14... Nf6 { [%eval 1.27] [%clk 0:41:40] } 15. Qe3?! { [%eval 0.3] } { Inaccuracy. Qc2 was best. } { [%clk 0:41:01] } 15... Rd8 { [%eval 0.15] [%clk 0:38:00] } 16. h3 { [%eval 0.0] [%clk 0:36:59] } 16... Bd7 { [%eval 0.01] [%clk 0:29:37] } 17. b3 { [%eval 0.0] [%clk 0:37:26] } 17... Bf8 { [%eval 0.0] [%clk 0:26:41] } 18. Bb2 { [%eval 0.02] [%clk 0:37:42] } 18... Be8 { [%eval -0.08] [%clk 0:24:13] } 19. Rac1 { [%eval 0.08] [%clk 0:31:21] } 19... Rd7 { [%eval 0.35] [%clk 0:21:55] } 20. Nb1?! { [%eval -0.22] } { Inaccuracy. Nc2 was best. } { [%clk 0:27:33] } 20... Nd5 { [%eval -0.4] [%clk 0:19:36] } 21. Qf3 { [%eval -0.13] [%clk 0:25:42] } 21... Nb4 { [%eval -0.39] [%clk 0:19:03] } 22. Nc3 { [%eval -0.32] [%clk 0:22:21] } 22... Rad8 { [%eval -0.3] [%clk 0:13:22] } 23. Qe3 { [%eval -0.23] [%clk 0:22:48] } 23... Rd6 { [%eval 0.04] [%clk 0:08:40] } 24. a3 { [%eval 0.05] [%clk 0:18:06] } 24... Nc6 { [%eval 0.0] [%clk 0:09:05] } 25. Nxc6 { [%eval 0.0] [%clk 0:16:27] } 25... Rxd1+ { [%eval 0.0] [%clk 0:06:58] } 26. Nxd1 { [%eval 0.0] [%clk 0:16:53] } 26... Bxc6 { [%eval 0.04] [%clk 0:07:23] } 27. b4 { [%eval 0.2] [%clk 0:11:43] } 27... Bxg2 { [%eval 0.09] [%clk 0:05:23] } 28. Kxg2 { [%eval 0.05] [%clk 0:12:10] } 28... Na4 { [%eval -0.08] [%clk 0:05:15] } 29. Qxb6 { [%eval -0.15] [%clk 0:07:58] } 29... Nxb6 { [%eval 0.0] [%clk 0:05:42] } 30. Ne3 { [%eval -0.03] [%clk 0:08:24] } 30... Rd7 { [%eval 0.0] [%clk 0:04:41] } 31. Nc4 { [%eval 0.0] [%clk 0:07:19] } 31... Na4 { [%eval 0.0] [%clk 0:02:43] } 32. Ne5 { [%eval 0.08] [%clk 0:07:46] } 32... Rd2 { [%eval 0.0] [%clk 0:02:50] } 33. Ba1? { [%eval -1.34] } { Mistake. Bc3 was best. } { [%clk 0:08:14] } 33... f6 { [%eval -1.32] [%clk 0:03:03] } 34. Nd3 { [%eval -1.24] [%clk 0:07:22] } 34... e5 { [%eval -1.06] [%clk 0:03:02] } 35. Kf1 { [%eval -1.4] [%clk 0:03:26] } 35... Ra2 { [%eval -1.07] [%clk 0:03:19] } 36. Bc3 { [%eval -1.0] [%clk 0:03:41] } 36... Rxa3 { [%eval -1.02] [%clk 0:03:05] } 37. Bd2 { [%eval -0.89] [%clk 0:04:10] } 37... Bd6 { [%eval -0.87] [%clk 0:01:00] } 38. b5?? { [%eval -4.37] } { Blunder. Nc5 was best. } { [%clk 0:00:34] } 38... axb5 { [%eval -4.08] [%clk 0:01:02] } 39. Rb1 { [%eval -5.0] [%clk 0:00:43] } 39... e4 { [%eval -4.79] [%clk 0:00:38] } 40. Nf4 { [%eval -5.03] [%clk 0:00:35] } 40... Ra2 { [%eval -5.57] [%clk 0:00:32] } 41. Be1 { [%eval -5.62] [%clk 0:29:04] } 41... b4?! { [%eval -3.61] } { Inaccuracy. Rb2 was best. } { [%clk 0:18:46] } 42. Nd5 { [%eval -3.54] [%clk 0:26:16] } 42... Rb2 { [%eval -3.64] [%clk 0:19:07] } 43. Rd1? { [%eval -5.95] } { Mistake. Rxb2 was best. } { [%clk 0:26:13] } 43... b5 { [%eval -5.92] [%clk 0:17:38] } 44. Rd4 { [%eval -7.07] [%clk 0:21:57] } 44... b3 { [%eval -6.92] [%clk 0:16:35] } 45. Nc3 { [%eval -7.0] [%clk 0:22:11] } 45... Nxc3 { [%eval -6.86] [%clk 0:11:46] } 46. Bxc3 0-1