Event: Round 4: Boyer-Olson, Jack - Charles Bernstein
Site: https://lichess.org/broadcast/2025-marshall-monthly-u2400--september/round-4/vvVRPffI/cEsOGy94
Date: 2025-09-21
White: Boyer-Olson, Jack
WhiteElo: 1868
Black: Charles Bernstein
Result: 1-0
ECO: E04
Opening: Catalan Opening: Open Defense
Variant: Standard
TimeControl: 90+30
Termination: Unplayed

1. d4 { [%eval 0.17] [%clk 1:30:32] } 1... Nf6 { [%eval 0.19] [%clk 1:30:54] } 2. c4 { [%eval 0.18] [%clk 1:30:51] } 2... e6 { [%eval 0.14] [%clk 1:31:11] } 3. g3 { [%eval 0.09] [%clk 1:31:12] } 3... d5 { [%eval 0.12] [%clk 1:31:12] } 4. Bg2 { [%eval 0.08] [%clk 1:31:31] } 4... c6 { [%eval 0.31] [%clk 1:31:07] } 5. Nf3 { [%eval 0.2] [%clk 1:31:52] } 5... dxc4 { [%eval 0.34] [%clk 1:30:48] } 6. O-O { [%eval 0.34] [%clk 1:31:56] } 6... Nbd7 { [%eval 0.35] [%clk 1:30:49] } 7. a4 { [%eval 0.32] [%clk 1:31:53] } 7... Be7 { [%eval 0.61] [%clk 1:30:45] } 8. Qc2 { [%eval 0.62] [%clk 1:32:10] } 8... O-O { [%eval 0.6] [%clk 1:30:37] } 9. Nbd2?! { [%eval 0.02] } { Inaccuracy. a5 was best. } { [%clk 1:32:04] } 9... c5? { [%eval 1.26] } { Mistake. b5 was best. } { [%clk 1:27:32] } 10. Nxc4 { [%eval 1.15] [%clk 1:30:49] } 10... Nd5 { [%eval 1.24] [%clk 1:25:58] } 11. Rd1 { [%eval 1.07] [%clk 1:30:00] } 11... b6 { [%eval 0.97] [%clk 1:24:32] } 12. Nfe5?! { [%eval 0.15] } { Inaccuracy. dxc5 was best. } { [%clk 1:28:22] } 12... Bb7 { [%eval 0.21] [%clk 1:21:25] } 13. dxc5 { [%eval 0.18] [%clk 1:25:36] } 13... Nxc5 { [%eval 0.23] [%clk 1:19:22] } 14. e4 { [%eval 0.0] [%clk 1:17:38] } 14... Nb4 { [%eval 0.0] [%clk 1:19:19] } 15. Qe2 { [%eval 0.0] [%clk 1:17:58] } 15... Qc8 { [%eval 0.0] [%clk 1:18:23] } 16. Be3 { [%eval 0.03] [%clk 1:15:31] } 16... f6 { [%eval 0.46] [%clk 1:15:56] } 17. Bxc5 { [%eval 0.41] [%clk 1:14:46] } 17... Bxc5 { [%eval 0.41] [%clk 1:15:16] } 18. Nd7 { [%eval 0.36] [%clk 1:15:08] } 18... Rd8 { [%eval 0.55] [%clk 1:15:31] } 19. Bh3 { [%eval 0.21] [%clk 1:15:22] } 19... f5?? { [%eval 2.56] } { Blunder. Qc6 was best. } { [%clk 1:14:35] } 20. Nxc5 { [%eval 2.49] [%clk 1:12:58] } 20... Qxc5 { [%eval 2.42] [%clk 1:14:09] } 21. exf5 { [%eval 2.44] [%clk 1:13:15] } 21... exf5? { [%eval 4.33] } { Mistake. e5 was best. } { [%clk 1:14:07] } 22. Qe6+ { [%eval 4.42] [%clk 1:10:10] } 22... Kh8 { [%eval 4.37] [%clk 1:14:29] } 23. Nd6 { [%eval 4.39] [%clk 1:10:15] } 23... Rxd6 { [%eval 4.27] [%clk 1:09:19] } 24. Rxd6 { [%eval 4.14] [%clk 1:10:32] } 24... h6 { [%eval 4.92] [%clk 1:06:26] } 25. Rad1 { [%eval 4.91] [%clk 1:07:27] } 25... Nc6 { [%eval 5.69] [%clk 1:05:46] } 26. Rd7 { [%eval 5.67] [%clk 1:04:59] } 26... Ba6?! { [%eval 8.03] } { Inaccuracy. Qe5 was best. } { [%clk 0:59:01] } 27. Qg6 { [%eval 6.35] [%clk 1:04:15] } 27... Qe5?? { [%eval #3] } { Checkmate is now unavoidable. Ne7 was best. } { [%clk 0:56:54] } 28. Qxc6?? { [%eval 6.13] } { Lost forced checkmate sequence. Bxf5 was best. } { [%clk 1:04:31] } 28... Re8?! { [%eval 10.1] } { Inaccuracy. Rf8 was best. } { [%clk 0:56:59] } 29. Qg6 { [%eval 8.87] [%clk 1:04:42] } 29... Qe1+? { [%eval #6] } { Checkmate is now unavoidable. Bc4 was best. } { [%clk 0:56:43] } 30. Rxe1 { [%eval #5] [%clk 1:04:51] } 30... Rxe1+ { [%eval #5] [%clk 0:57:09] } 31. Bf1 { [%eval #4] [%clk 1:05:04] } 31... Rxf1+ { [%eval #4] [%clk 0:57:10] } 32. Kg2 { [%eval #3] [%clk 1:05:26] } 32... Rxf2+ { [%eval #2] [%clk 0:57:26] } 33. Kxf2 { [%eval #1] [%clk 1:05:45] } 33... Bc4 { [%eval #1] [%clk 0:57:41] } 34. Qxg7# { [%clk 1:05:41] } 1-0