Jacobson, Brandon vs Tugstumur, Yesuntumur
35th Annual Chicago Open · Round 7 · 2026.05.24 · 1-0 · E92 King's Indian Defense: Petrosian Variation, Stein Defense
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PGN
[Event "35th Annual Chicago Open"]
[Site "Lichess"]
[Date "2026.05.24"]
[Round "7"]
[White "Jacobson, Brandon"]
[Black "Tugstumur, Yesuntumur"]
[Result "1-0"]
[PlyCount "95"]
[WhiteElo "2594"]
[WhiteFideId "30901561"]
[WhiteTitle "GM"]
[BlackElo "2410"]
[BlackFideId "4902521"]
[BlackTitle "IM"]
[ECO "E92"]
[Source "LichessBroadcast"]
[SourceQuality "2"]
[ImportDate "2026-06-04"]
1. d4 { [%clk 1:05:57] } 1... Nf6 { [%clk 1:20:00] } 2. c4 { [%clk 1:05:57] }
2... g6 { [%clk 1:20:00] } 3. Nc3 { [%clk 1:05:57] } 3... Bg7
{ [%clk 1:20:00] } 4. e4 { [%clk 1:05:48] } 4... d6 { [%clk 1:20:00] } 5. Nf3
{ [%clk 1:05:48] } 5... O-O { [%clk 1:20:00] } 6. Be2 { [%clk 1:05:48] } 6...
e5 { [%clk 1:20:00] } 7. d5 { [%clk 1:05:48] } 7... a5 { [%clk 1:20:00] } 8.
Bg5 { [%clk 1:05:48] } 8... h6 { [%clk 1:15:27] } 9. Be3 { [%clk 1:05:48] }
9... Ng4 { [%clk 1:14:20] } 10. Bd2 { [%clk 1:05:48] } 10... Na6
{ [%clk 1:12:01] } 11. h3 { [%clk 1:05:48] } 11... Nf6 { [%clk 1:12:01] } 12.
Be3 { [%clk 1:05:46] } 12... Nh5 { [%clk 1:08:41] } 13. Nd2 { [%clk 1:04:56] }
13... Nf4 { [%clk 1:08:33] } 14. Bf1 { [%clk 1:04:56] } 14... Nb4
{ [%clk 1:05:55] } 15. Ndb1 { [%clk 1:01:25] } 15... f5 { [%clk 0:55:09] } 16.
a3 { [%clk 1:01:07] } 16... Nbd3+ $6
{ Inaccuracy. Na6 was best.[%clk 0:55:09] } 17. Bxd3 { [%clk 0:58:36] } 17...
Nxg2+ { [%clk 0:55:09] } 18. Ke2 { [%clk 0:58:36] } 18... f4 { [%clk 0:50:21] }
19. Bc1 { [%clk 0:57:57] } 19... f3+ { [%clk 0:49:33] } 20. Kd2
{ [%clk 0:57:57] } 20... Qh4 { [%clk 0:49:33] } 21. Qg1 { [%clk 0:55:45] }
21... Bxh3 { [%clk 0:46:09] } 22. Kc2 { [%clk 0:53:52] } 22... g5
{ [%clk 0:44:05] } 23. Nd2 { [%clk 0:45:01] } 23... Rf4 { [%clk 0:37:46] } 24.
Nf1 { [%clk 0:41:25] } 24... Raf8 { [%clk 0:26:39] } 25. Ng3 { [%clk 0:40:43] }
25... Rg4 { [%clk 0:24:02] } 26. Nd1 { [%clk 0:34:37] } 26... Rxg3
{ [%clk 0:20:13] } 27. fxg3 { [%clk 0:33:08] } 27... Qxg3 { [%clk 0:20:13] }
28. Qf2 { [%clk 0:19:00] } 28... Qg4 { [%clk 0:19:18] } 29. Ne3
{ [%clk 0:18:26] } 29... Qd7 { [%clk 0:17:51] } 30. Qg3 { [%clk 0:12:42] }
30... g4 { [%clk 0:09:51] } 31. Bf1 { [%clk 0:07:53] } 31... h5
{ [%clk 0:09:01] } 32. Nxg2 { [%clk 0:05:36] } 32... fxg2 { [%clk 0:09:01] }
33. Bxg2 { [%clk 0:05:36] } 33... h4 $2
{ Mistake. Qa4+ was best.[%clk 0:09:01] } 34. Qxh4 { [%clk 0:05:36] } 34...
Bxg2 { [%clk 0:09:01] } 35. Qh7+ { [%clk 0:05:36] } 35... Kf7
{ [%clk 0:09:01] } 36. Qh5+ { [%clk 0:02:28] } 36... Kg8 { [%clk 0:08:21] } 37.
Qh7+ { [%clk 0:02:28] } 37... Kf7 { [%clk 0:08:21] } 38. Rh6 $2
{ Mistake. Bh6 was best.[%clk 0:01:28] } 38... Rh8 { [%clk 0:04:14] } 39. Qg6+
{ [%clk 0:01:28] } 39... Kg8 { [%clk 0:03:36] } 40. Rxh8+ { [%clk 0:01:28] }
40... Kxh8 { [%clk 0:03:36] } 41. a4 { [%clk 0:18:06] } 41... Bf3
{ [%clk 0:30:53] } 42. Bd2 { [%clk 0:16:12] } 42... b6 $2
{ Mistake. Qd8 was best.[%clk 0:30:18] } 43. b4 { [%clk 0:12:39] } 43... c6 $6
{ Inaccuracy. axb4 was best.[%clk 0:28:36] } 44. b5 { [%clk 0:08:09] } 44...
c5 $6 { Inaccuracy. cxd5 was best.[%clk 0:23:33] } 45. Kd3 { [%clk 0:08:09] }
45... Kg8 { [%clk 0:23:33] } 46. Bg5 { [%clk 0:08:09] } 46... Kf8
{ [%clk 0:22:37] } 47. Ke3 { [%clk 0:07:05] } 47... Kg8 { [%clk 0:22:37] } 48.
Qe6+ { [%clk 0:05:03] } 1-0