[Event "U.S. SuperNationals Chess Championships 2025"] [Site "Orlando"] [Date "2025.05.09"] [Round "02"] [White "Ngo, Bach"] [Black "Shvarts, Tim"] [Result "1-0"] [WhiteElo "2453"] [BlackElo "2118"] [TimeControl "5400+10"] [Variant "Standard"] [ECO "D43"] [Opening "Semi-Slav Defense"] [StudyName "SuperNationals VIII: Friday and Saturday"] [ChapterName "Ngo, Bach - Shvarts, Tim"] [ChapterURL "https://lichess.org/study/laIJe6NX/lSAw1YP1"] [Annotator "https://lichess.org/@/ChessLifeOnline"] [Orientation "white"] 1. d4 { [%clk 1:29:09] } 1... Nf6 { [%clk 1:29:32] } 2. Nf3 { [%clk 1:28:46] } 2... e6 { [%clk 1:28:48] } 3. c4 { [%clk 1:28:39] } 3... d5 { [%clk 1:28:48] } 4. Nc3 { [%clk 1:28:39] } 4... c6 { [%clk 1:28:48] } 5. cxd5 { [%clk 1:28:19] } 5... exd5 { [%clk 1:28:43] } 6. Qc2 { [%clk 1:28:19] } 6... Bd6 { [%clk 1:24:03] } 7. Bg5 { [%clk 1:27:26] } 7... O-O { [%clk 1:21:56] } 8. e3 { [%clk 1:27:21] } 8... h6 { [%clk 1:21:41] } 9. Bh4 { [%clk 1:27:09] } 9... Nbd7 { [%clk 1:15:17] } 10. Bd3 { [%clk 1:23:07] } 10... b6 { [%clk 1:11:51] } 11. O-O { [%clk 1:15:30] } 11... Bb7 { [%clk 1:10:05] } 12. Bf5 { [%clk 1:08:27] } 12... Be7 { [%clk 0:57:40] } 13. Rac1 { [%clk 1:07:32] } 13... Re8 { [%clk 0:55:16] } 14. Rfd1 { [%clk 1:04:14] } 14... Nh5 { [%clk 0:39:48] } 15. Bxe7 { [%clk 1:02:35] } 15... Qxe7 { [%clk 0:35:02] } 16. Qb1 { [%clk 1:00:48] } 16... Nhf6 { [%clk 0:29:32] } 17. b4 { [%clk 0:57:19] } 17... a5 { [%clk 0:28:24] } 18. b5 { [%clk 0:55:40] } 18... c5 { [%clk 0:27:50] } 19. Bxd7 { [%clk 0:52:59] } 19... Nxd7 { [%clk 0:23:41] } 20. dxc5 { [%clk 0:51:56] } 20... Nxc5 { [%clk 0:23:41] } 21. Nxd5 { [%clk 0:51:14] } 21... Qd6 { [%clk 0:21:28] } 22. Nf4 { [%clk 0:49:45] } 22... Qf6 { [%clk 0:21:00] } 23. Qa1 { [%clk 0:45:31] } 23... Qf5 { [%clk 0:18:28] } 24. Nd4 { [%clk 0:45:25] } 24... Qe4 { [%clk 0:18:28] } 25. Nde2 { [%clk 0:42:37] } 25... Rad8 { [%clk 0:15:06] } 26. Ng3 { [%clk 0:42:04] } 26... Rxd1+ { [%clk 0:12:51] } 27. Rxd1 { [%clk 0:42:01] } 27... Qe5 { [%clk 0:12:51] } 28. Qd4 { [%clk 0:38:17] } 28... Qxd4 { [%clk 0:11:20] } 29. Rxd4 { [%clk 0:37:53] } 29... Re5 { [%clk 0:10:06] } 30. a4 { [%clk 0:34:37] } 30... Kf8 { [%clk 0:08:01] } 31. Nge2 { [%clk 0:32:53] } 31... Re4 { [%clk 0:07:01] } 32. Nc3 { [%clk 0:32:33] } 32... Rxd4 { [%clk 0:06:57] } 33. exd4 { [%clk 0:32:33] } 33... Ne4 { [%clk 0:06:57] } 34. Nfd5 { [%clk 0:30:44] } 34... Nxc3 { [%clk 0:06:57] } 35. Nxc3 { [%clk 0:30:42] } 35... Ke7 { [%clk 0:06:57] } 36. f3 { [%clk 0:30:22] } 36... Kd6 { [%clk 0:06:39] } 37. Kf2 { [%clk 0:30:20] } 37... f5 { [%clk 0:06:39] } 38. h4 { [%clk 0:22:25] } 38... g5 { [%clk 0:06:22] } 39. hxg5 { [%clk 0:21:03] } 39... hxg5 { [%clk 0:06:22] } 40. Ke3 { [%clk 0:20:17] } 40... Bc8 { [%clk 0:06:00] } 41. Kd3 { [%clk 0:17:29] } 41... Be6 { [%clk 0:06:00] } 42. Nd1 { [%clk 0:17:01] } 42... Bb3 { [%clk 0:05:18] } 43. Nb2 { This is a huge missed opportunity by Black to save the game. One should always double-check one's calculation in minor piece endgames! } { [%clk 0:17:01] } 43... Kd5?? $10 { [%clk 0:04:47] } (43... f4! { An important move that makes sure the kingside is locked so that White cannot make progress by trading into a pure king-and-pawn endgame. There is no other knight infiltration otherwise. } 44. Nc4+ Bxc4+ 45. Kxc4 Ke6 46. d5+ Ke5!) 44. Kc3 { [%clk 0:16:39] } 44... Ba2 { [%clk 0:04:47] } 45. Nd1?? { White gives Black a chance once again! } { [%clk 0:13:05] } (45. g3! { An important move that would stabilize the position while weakening at least one pawn for Black. } 45... f4 (45... g4 46. fxg4 fxg4 47. Nd3 { [%cal Gd3e5,Gd3f2,Gf2g4,Ge5g4] } 47... Bb1 48. Ne5 Bf5 49. Nc4 $18 { [%csl Gb6] }) (45... Bb1 46. Nc4 { [%csl Gb6] }) (45... Kd6 46. Nc4+ Bxc4 (46... Kc7 47. d5 $18) 47. Kxc4 Ke6 48. d5+ Ke5 49. f4+ gxf4 50. gxf4+ Kd6 51. Kd4 $18) 46. gxf4 gxf4 47. Nd3 { [%csl Gf4] }) 45... Ke6 { [%clk 0:04:01] } 46. Ne3 { [%clk 0:12:01] } 46... Bd5?? { [%clk 0:03:19] } (46... f4! { The last moment to save the game! } 47. Nc4 Bxc4 48. Kxc4) 47. Nxd5 { [%clk 0:10:25] } 47... Kxd5 { [%clk 0:03:19] } 48. g3 { [%clk 0:10:25] } 48... Kd6 { [%clk 0:02:40] } 49. Kc4 { [%clk 0:07:37] } 49... Ke6 { [%clk 0:02:40] } 50. d5+ { [%clk 0:06:47] } 50... Ke5 { [%clk 0:02:40] } 51. f4+ { [%clk 0:06:42] } 51... gxf4 { [%clk 0:02:40] } 52. gxf4+ { 1-0 White wins. } { [%clk 0:06:42] } 1-0