Event: Round 9: Jacobson, Brandon - Sosa, Tomas
Date: 2025-04-27
White: Jacobson, Brandon
WhiteTitle: GM
WhiteElo: 2570
Black: Sosa, Tomas
BlackTitle: GM
BlackElo: 2498
Result: 0-1
ECO: E90
Opening: King's Indian Defense: Normal Variation, Rare Defenses
Variant: Standard
TimeControl: 90+30

1. d4 { [%eval 0.17] [%clk 1:25:58] } 1... Nf6 { [%eval 0.19] [%clk 1:30:37] } 2. c4 { [%eval 0.18] [%clk 1:26:07] } 2... g6 { [%eval 0.19] [%clk 1:29:55] } 3. Nc3 { [%eval 0.21] [%clk 1:26:23] } 3... d6 { [%eval 0.55] [%clk 1:29:34] } 4. e4 { [%eval 0.46] [%clk 1:26:37] } 4... Bg7 { [%eval 0.55] [%clk 1:29:57] } 5. Nf3 { [%eval 0.36] [%clk 1:26:45] } 5... Bg4 { [%eval 0.52] [%clk 1:29:20] } 6. Be2 { [%eval 0.5] [%clk 1:24:58] } 6... O-O { [%eval 0.61] [%clk 1:28:13] } 7. Be3 { [%eval 0.53] [%clk 1:24:52] } 7... e5 { [%eval 0.8] [%clk 1:23:25] } 8. d5 { [%eval 1.12] [%clk 1:24:08] } 8... a5 { [%eval 1.26] [%clk 1:23:06] } 9. Nd2 { [%eval 1.17] [%clk 1:19:41] } 9... Bxe2 { [%eval 1.18] [%clk 1:05:13] } 10. Qxe2 { [%eval 1.15] [%clk 1:19:30] } 10... Nh5 { [%eval 1.1] [%clk 1:05:29] } 11. g3 { [%eval 1.24] [%clk 1:12:58] } 11... Na6 { [%eval 1.1] [%clk 1:04:40] } 12. O-O-O { [%eval 1.1] [%clk 1:13:12] } 12... Qe8 { [%eval 1.32] [%clk 1:01:08] } 13. Kb1 { [%eval 1.17] [%clk 1:09:15] } 13... f5 { [%eval 1.13] [%clk 0:59:28] } 14. f3 { [%eval 1.15] [%clk 0:39:49] } 14... b6 { [%eval 1.19] [%clk 0:57:04] } 15. Rdg1 { [%eval 1.28] [%clk 0:38:35] } 15... f4 { [%eval 1.24] [%clk 0:38:14] } 16. Bf2 { [%eval 1.41] [%clk 0:38:42] } 16... fxg3 { [%eval 1.52] [%clk 0:37:33] } 17. hxg3 { [%eval 1.16] [%clk 0:39:10] } 17... Bh6 { [%eval 1.34] [%clk 0:36:56] } 18. Be3? { [%eval 0.22] } { Mistake. f4 was best. } { [%clk 0:22:48] } 18... Bxe3 { [%eval 0.26] [%clk 0:35:14] } 19. Qxe3 { [%eval 0.28] [%clk 0:23:04] } 19... Qd7?! { [%eval 1.29] } { Inaccuracy. Nc5 was best. } { [%clk 0:32:36] } 20. Ne2?! { [%eval 0.24] } { Inaccuracy. f4 was best. } { [%clk 0:23:12] } 20... b5 { [%eval 0.56] [%clk 0:28:23] } 21. f4 { [%eval 0.58] [%clk 0:20:55] } 21... bxc4?! { [%eval 1.56] } { Inaccuracy. Nf6 was best. } { [%clk 0:22:43] } 22. f5 { [%eval 1.5] [%clk 0:20:02] } 22... Rab8 { [%eval 1.86] [%clk 0:20:11] } 23. Nxc4 { [%eval 1.71] [%clk 0:12:58] } 23... Rb4 { [%eval 1.81] [%clk 0:17:28] } 24. Rc1?! { [%eval 1.14] } { Inaccuracy. Nxa5 was best. } { [%clk 0:12:54] } 24... Nc5 { [%eval 1.4] [%clk 0:16:37] } 25. g4?! { [%eval 0.8] } { Inaccuracy. fxg6 was best. } { [%clk 0:07:02] } 25... Nf4?! { [%eval 1.79] } { Inaccuracy. Nf6 was best. } { [%clk 0:03:17] } 26. Nxf4? { [%eval 0.5] } { Mistake. Rc2 was best. } { [%clk 0:05:15] } 26... exf4 { [%eval 0.5] [%clk 0:03:45] } 27. Qd4 { [%eval 0.0] [%clk 0:05:29] } 27... Qe7 { [%eval 0.0] [%clk 0:03:05] } 28. Rhe1 { [%eval 0.03] [%clk 0:01:43] } 28... f3 { [%eval 0.49] [%clk 0:02:43] } 29. e5 { [%eval 0.6] [%clk 0:00:54] } 29... f2 { [%eval 0.49] [%clk 0:03:12] } 30. Re2?? { [%eval -2.32] } { Blunder. Qxf2 was best. } { [%clk 0:00:39] } 30... dxe5 { [%eval -2.05] [%clk 0:03:13] } 31. Rxe5?? { [%eval -5.27] } { Blunder. Qc3 was best. } { [%clk 0:00:37] } 31... Rxc4 { [%eval -5.35] [%clk 0:02:39] } 32. Qxc4 { [%eval -5.02] [%clk 0:00:47] } 32... Qxe5 { [%eval -5.05] [%clk 0:03:07] } 33. Qxc5 { [%eval -5.21] [%clk 0:00:59] } 33... Qe4+ { [%eval -5.09] [%clk 0:02:49] } 34. Qc2 { [%eval -5.55] [%clk 0:00:53] } 34... gxf5 { [%eval -6.05] [%clk 0:01:35] } 35. gxf5 { [%eval -6.03] [%clk 0:00:32] } 35... Qxf5 { [%eval -5.94] [%clk 0:00:58] } 36. Rf1 { [%eval -5.75] [%clk 0:00:45] } 36... h5 { [%eval -5.85] [%clk 0:00:57] } 37. a4 { [%eval -6.69] [%clk 0:00:39] } 37... Qxc2+ { [%eval -6.48] [%clk 0:00:43] } 38. Kxc2 { [%eval -6.23] [%clk 0:01:07] } 38... h4 { [%eval -5.7] [%clk 0:00:40] } 0-1