Event: Round 1: Roberson, Peter T - Siva Mahadevan
Site: https://lichess.org/broadcast/4ncl-division-1-2025-2026/round-1/myqWPoCy/tomQv8CT
Date: 2025-11-01
White: Roberson, Peter T
WhiteTitle: IM
WhiteElo: 2447
Black: Siva Mahadevan
BlackTitle: IM
BlackElo: 2424
Result: 0-1
ECO: E05
Opening: Catalan Opening: Open Defense, Classical Line
Variant: Standard

1. d4 { [%eval 0.17] [%clk 1:30:55] } 1... d5 { [%eval 0.18] [%clk 1:29:49] } 2. c4 { [%eval 0.18] [%clk 1:31:18] } 2... e6 { [%eval 0.17] [%clk 1:29:58] } 3. Nf3 { [%eval 0.11] [%clk 1:31:34] } 3... Nf6 { [%eval 0.17] [%clk 1:28:55] } 4. g3 { [%eval 0.16] [%clk 1:31:57] } 4... Be7 { [%eval 0.2] [%clk 1:24:47] } 5. Bg2 { [%eval 0.19] [%clk 1:31:54] } 5... O-O { [%eval 0.22] [%clk 1:25:07] } 6. O-O { [%eval 0.2] [%clk 1:32:18] } 6... dxc4 { [%eval 0.16] [%clk 1:24:55] } 7. Qc2 { [%eval 0.1] [%clk 1:32:00] } 7... c6 { [%eval 0.25] [%clk 1:24:27] } 8. Qxc4 { [%eval 0.43] [%clk 1:29:45] } 8... b5 { [%eval 0.31] [%clk 1:24:49] } 9. Qb3 { [%eval 0.19] [%clk 1:27:37] } 9... Bb7 { [%eval 0.26] [%clk 1:24:24] } 10. Rd1 { [%eval 0.29] [%clk 1:23:45] } 10... Nbd7 { [%eval 0.31] [%clk 1:20:50] } 11. Nc3 { [%eval 0.13] [%clk 1:19:14] } 11... b4 { [%eval 0.13] [%clk 1:14:18] } 12. Na4 { [%eval 0.18] [%clk 1:14:32] } 12... Qa5 { [%eval 0.22] [%clk 1:07:52] } 13. Bd2 { [%eval -0.18] [%clk 1:00:43] } 13... Qb5 { [%eval 0.28] [%clk 0:53:59] } 14. Rac1 { [%eval 0.29] [%clk 0:45:46] } 14... a5 { [%eval 0.28] [%clk 0:51:02] } 15. Bg5 { [%eval 0.25] [%clk 0:38:29] } 15... Qxe2 { [%eval 0.36] [%clk 0:35:46] } 16. Re1 { [%eval 0.44] [%clk 0:23:20] } 16... Qb5? { [%eval 1.71] } { Mistake. Qa6 was best. } { [%clk 0:25:55] } 17. Ne5 { [%eval 1.46] [%clk 0:18:30] } 17... Rad8?! { [%eval 2.4] } { Inaccuracy. Nb6 was best. } { [%clk 0:21:51] } 18. h4? { [%eval 0.87] } { Mistake. Bf1 was best. } { [%clk 0:06:48] } 18... Bd6?? { [%eval 3.52] } { Blunder. Ba8 was best. } { [%clk 0:11:46] } 19. Bf1 { [%eval 3.45] [%clk 0:01:20] } 19... Qd5 { [%eval 3.56] [%clk 0:12:10] } 20. Bc4 { [%eval 3.42] [%clk 0:01:43] } 20... Qxd4 { [%eval 3.21] [%clk 0:12:33] } 21. Nxf7 { [%eval 3.4] [%clk 0:01:16] } 21... Ng4 { [%eval 3.94] [%clk 0:05:00] } 22. Re2 { [%eval 3.94] [%clk 0:01:04] } 22... Nxf2 { [%eval 4.27] [%clk 0:02:44] } 23. Be3?? { [%eval 0.0] } { Blunder. Nxd8 was best. } { [%clk 0:00:34] } 23... Nh3+ { [%eval 0.0] [%clk 0:00:42] } 24. Kg2 { [%eval 0.0] [%clk 0:00:51] } 24... Qe4+ { [%eval 0.0] [%clk 0:00:41] } 25. Kxh3 { [%eval 0.0] [%clk 0:01:16] } 25... Rxf7 { [%eval 0.0] [%clk 0:01:05] } 26. Bxe6?? { [%eval -1.87] } { Blunder. Bb6 was best. } { [%clk 0:01:26] } 26... Ne5? { [%eval -0.28] } { Mistake. Kh8 was best. } { [%clk 0:01:15] } 27. Rf1?? { [%eval -5.32] } { Blunder. Rd2 was best. } { [%clk 0:00:43] } 27... Kh8 { [%eval -5.19] [%clk 0:01:02] } 28. Rxf7 { [%eval -5.75] [%clk 0:00:41] } 28... Nxf7 { [%eval -5.78] [%clk 0:01:31] } 29. Qc4 { [%eval -6.43] [%clk 0:00:33] } 29... Qf3 { [%eval -6.02] [%clk 0:01:17] } 30. Qg4 { [%eval -6.25] [%clk 0:00:35] } 30... Qh1+ { [%eval -5.88] [%clk 0:01:35] } 31. Rh2 { [%eval -6.11] [%clk 0:01:04] } 31... Qf1+ { [%eval -5.49] [%clk 0:01:56] } 32. Rg2 { [%eval -5.51] [%clk 0:01:33] } 32... c5 { [%eval -5.42] [%clk 0:02:18] } 33. Qe2 { [%eval -5.47] [%clk 0:01:41] } 33... Bxg2+ { [%eval -5.53] [%clk 0:02:38] } 34. Qxg2 { [%eval -5.48] [%clk 0:02:10] } 34... Qxg2+ { [%eval -5.45] [%clk 0:03:02] } 35. Kxg2 { [%eval -5.45] [%clk 0:02:38] } 35... Re8 { [%eval -5.46] [%clk 0:03:25] } 0-1