Event: Round 4: Osetrov, Prokhor - Somaraju, Sai Vivan Karthikeya
Date: 2025-06-26
White: Osetrov, Prokhor
WhiteElo: 1723
Black: Somaraju, Sai Vivan Karthikeya
BlackElo: 1833
Result: 0-1
ECO: E75
Opening: King's Indian Defense: Averbakh Variation, Main Line
Variant: Standard

1. d4 { [%eval 0.17] [%clk 1:30:01] } 1... Nf6 { [%eval 0.19] [%clk 1:30:59] } 2. c4 { [%eval 0.18] [%clk 1:30:16] } 2... g6 { [%eval 0.28] [%clk 1:31:27] } 3. Nc3 { [%eval 0.18] [%clk 1:30:37] } 3... Bg7 { [%eval 0.51] [%clk 1:31:56] } 4. e4 { [%eval 0.4] [%clk 1:31:00] } 4... d6 { [%eval 0.55] [%clk 1:32:24] } 5. Be2 { [%eval 0.51] [%clk 1:31:29] } 5... O-O { [%eval 0.48] [%clk 1:32:52] } 6. Bg5 { [%eval 0.18] [%clk 1:31:58] } 6... c5 { [%eval 0.31] [%clk 1:33:20] } 7. d5 { [%eval 0.15] [%clk 1:32:03] } 7... e6 { [%eval 0.27] [%clk 1:33:49] } 8. dxe6 { [%eval 0.33] [%clk 1:31:35] } 8... Bxe6 { [%eval 0.29] [%clk 1:33:34] } 9. Nf3 { [%eval 0.28] [%clk 1:31:50] } 9... Nc6 { [%eval 0.28] [%clk 1:33:43] } 10. O-O { [%eval 0.15] [%clk 1:31:33] } 10... h6 { [%eval 0.2] [%clk 1:33:23] } 11. Bf4 { [%eval 0.24] [%clk 1:31:03] } 11... Qb6 { [%eval 0.31] [%clk 1:30:27] } 12. Rb1 { [%eval 0.23] [%clk 1:15:55] } 12... Rad8 { [%eval 0.39] [%clk 1:12:07] } 13. Nd5 { [%eval 0.34] [%clk 1:11:26] } 13... Bxd5 { [%eval 0.31] [%clk 1:10:45] } 14. exd5 { [%eval 0.4] [%clk 1:11:36] } 14... Ne7?! { [%eval 1.0] } { Inaccuracy. Nd4 was best. } { [%clk 1:10:27] } 15. Bd3 { [%eval 1.07] [%clk 1:11:07] } 15... Nh5 { [%eval 1.3] [%clk 1:01:46] } 16. Be3 { [%eval 1.25] [%clk 1:08:48] } 16... Qc7 { [%eval 1.18] [%clk 0:59:52] } 17. b4?! { [%eval 0.44] } { Inaccuracy. Qc1 was best. } { [%clk 1:00:59] } 17... b6?! { [%eval 1.31] } { Inaccuracy. b5 was best. } { [%clk 0:57:19] } 18. bxc5 { [%eval 1.34] [%clk 0:57:21] } 18... bxc5 { [%eval 1.3] [%clk 0:57:21] } 19. Bd2 { [%eval 1.32] [%clk 0:56:15] } 19... Rb8 { [%eval 1.22] [%clk 0:47:25] } 20. Qe2 { [%eval 0.91] [%clk 0:49:08] } 20... Rfe8 { [%eval 0.99] [%clk 0:42:36] } 21. Rfe1 { [%eval 0.85] [%clk 0:48:10] } 21... Nf6 { [%eval 0.9] [%clk 0:41:11] } 22. Rxb8 { [%eval 0.85] [%clk 0:43:13] } 22... Qxb8 { [%eval 0.98] [%clk 0:41:40] } 23. Rb1 { [%eval 0.94] [%clk 0:43:17] } 23... Qc8 { [%eval 1.01] [%clk 0:41:00] } 24. Qd1 { [%eval 1.05] [%clk 0:41:49] } 24... Nd7?! { [%eval 1.66] } { Inaccuracy. Nf5 was best. } { [%clk 0:29:31] } 25. Qa4 { [%eval 1.58] [%clk 0:39:17] } 25... Qc7 { [%eval 1.59] [%clk 0:22:27] } 26. Ba5 { [%eval 1.73] [%clk 0:35:33] } 26... Qc8 { [%eval 1.44] [%clk 0:22:47] } 27. Qb5 { [%eval 1.39] [%clk 0:35:29] } 27... Ne5 { [%eval 1.26] [%clk 0:18:34] } 28. Nxe5 { [%eval 1.35] [%clk 0:34:01] } 28... Bxe5 { [%eval 0.97] [%clk 0:18:49] } 29. Qb7?! { [%eval 0.0] } { Inaccuracy. h3 was best. } { [%clk 0:33:41] } 29... Qg4 { [%eval 0.0] [%clk 0:16:33] } 30. h3? { [%eval -1.29] } { Mistake. Qb3 was best. } { [%clk 0:25:40] } 30... Qd4? { [%eval 0.0] } { Mistake. Qf4 was best. } { [%clk 0:15:46] } 31. Qb5 { [%eval -0.09] [%clk 0:23:59] } 31... Rf8 { [%eval 0.0] [%clk 0:14:45] } 32. Qb3 { [%eval 0.0] [%clk 0:24:19] } 32... Qf4 { [%eval 0.13] [%clk 0:09:27] } 33. g3 { [%eval 0.14] [%clk 0:24:22] } 33... Qg5 { [%eval 0.28] [%clk 0:09:17] } 34. Bf1 { [%eval 0.03] [%clk 0:23:47] } 34... Nf5 { [%eval 0.0] [%clk 0:08:14] } 35. Qd3 { [%eval 0.02] [%clk 0:21:59] } 35... Nd4 { [%eval 0.06] [%clk 0:07:41] } 36. Bd2?? { [%eval -4.68] } { Blunder. Rb7 was best. } { [%clk 0:21:25] } 36... Qxd2 { [%eval -4.52] [%clk 0:07:50] } 0-1