[Event "U.S. National Invitational Tournaments"] [Site "Grand Rapids"] [Date "2023.07.31"] [Round "05"] [White "De La Colina, Nicolas"] [Black "Huston, Gus"] [Result "0-1"] [WhiteElo "2314"] [BlackElo "2438"] [TimeControl "5400+30"] [Annotator "Davis Zong Jr"] [Variant "Standard"] [ECO "B51"] [Opening "Sicilian Defense: Moscow Variation"] [Source "https://lichess.org/study/w2guu0Vb/fLJNlXwM"] [Orientation "white"] 1. e4 { [%clk 1:30:54] } 1... c5 { [%clk 1:30:12] } 2. Nf3 { [%clk 1:31:06] } 2... d6 { [%clk 1:30:32] } 3. Bb5+ { [%clk 1:31:30] } 3... Nd7 { [%clk 1:30:25] } 4. d4 { [%clk 1:31:52] } 4... cxd4 { [%clk 1:30:49] } 5. Qxd4 { [%clk 1:32:17] } 5... a6 { [%clk 1:31:12] } 6. Bxd7+ { [%clk 1:32:41] } 6... Bxd7 { [%clk 1:31:38] } 7. c4 { [%clk 1:33:02] } 7... Nf6 { [%clk 1:31:39] } 8. Bg5 { [%clk 1:33:17] } 8... e6 { [%clk 1:32:08] } 9. Nc3 { [%clk 1:33:31] } 9... Be7 { [%clk 1:32:17] } 10. O-O { [%clk 1:33:54] } 10... O-O { [%clk 1:32:17] } 11. Bxf6 { [%clk 1:27:17] } 11... Bxf6 { [%clk 1:32:39] } 12. Qxd6 { [%clk 1:27:41] } 12... Bxc3 { Having acquired both bishops, Huston elects to give one of them back to ruin White's pawn structure. } { [%clk 1:29:53] } 13. bxc3 { [%clk 1:28:03] } 13... Bc6 { [%clk 1:30:08] } 14. Qxd8 { [%clk 1:18:20] } 14... Rfxd8 { [%clk 1:30:26] } 15. Rfe1 { [%clk 1:18:34] } 15... Rac8 { [%clk 1:22:10] } 16. Rab1 $10 { This endgame is dead equal in theory. White is up a pawn, but it is doubled, and Black's bishop is slightly better than White's knight. However, the slight imbalance of minor pieces and pawn structure is enough of an imbalance. } { [%clk 1:13:56] } 16... Rc7 { [%clk 1:21:48] } 17. h3 { [%clk 0:54:34] } 17... Kf8 { [%clk 1:19:29] } 18. Re3 { [%clk 0:53:33] } 18... Be8 { [%clk 1:10:57] } 19. c5 { [%clk 0:47:25] } (19. e5! { Fixing Black's pawns onto the color of the bishop. } 19... Rb8 20. Nd2 $10) 19... Rb8! { Good technique, guarding b7 first before capturing on c5. } { [%clk 1:09:34] } 20. Kf1 { [%clk 0:44:28] } 20... Rxc5 $17 { Black is now able to press this indefinitely for a two-result game. } { [%clk 1:09:49] } 21. Ke1 { [%clk 0:44:32] } 21... e5 { [%clk 1:07:08] } 22. Nd2 { [%clk 0:42:46] } 22... Rc7 { [%clk 0:59:37] } 23. c4 { [%clk 0:39:42] } 23... f6 { [%clk 0:56:39] } 24. Reb3 { [%clk 0:38:25] } 24... Bc6 { [%clk 0:54:23] } 25. f3 { [%clk 0:38:47] } 25... Rd7 { [%clk 0:54:36] } 26. Nf1 { [%clk 0:35:38] } 26... Rd4 { [%clk 0:46:15] } 27. Ne3 { [%clk 0:35:39] } 27... Rbd8 { [%clk 0:46:06] } 28. R1b2 { [%clk 0:34:35] } 28... h5 { [%clk 0:43:49] } 29. Ke2 { [%clk 0:28:44] } 29... Kf7 { [%clk 0:42:29] } 30. Rc3 { [%clk 0:28:29] } 30... g6 { [%clk 0:37:23] } 31. Nd5 { [%clk 0:26:06] } 31... Rc8 { [%clk 0:34:13] } 32. Rd3 { [%clk 0:20:23] } 32... Rxd3 { [%clk 0:28:50] } 33. Kxd3 { [%clk 0:20:45] } 33... f5 { [%clk 0:28:25] } 34. Rb6 { [%clk 0:19:05] } 34... a5 { [%clk 0:27:39] } 35. a3 { [%clk 0:16:41] } 35... Ke6 { [%clk 0:25:33] } 36. Rb1 { [%clk 0:10:34] } (36. c5! { It is important to deny the black king access to d6! }) 36... Kd6 $17 { [%clk 0:24:52] } 37. Rd1 { [%clk 0:04:45] } 37... Kc5 { [%clk 0:23:12] } 38. Rc1 { [%clk 0:04:55] } 38... Rf8 { [%clk 0:22:08] } 39. Ke3 { [%clk 0:05:02] } 39... f4+ { [%clk 0:18:39] } 40. Kd3 { [%clk 0:05:04] } 40... g5 { [%clk 0:18:51] } 41. Rh1 { [%clk 0:03:43] } 41... Rg8 { [%clk 0:17:34] } 42. Nc3 { [%clk 0:03:48] } (42. Kc3! { A deep idea, vacating the d3-square for the knight in some lines. } 42... g4 43. hxg4 hxg4 44. Rh5 gxf3 45. gxf3 Rg3 46. Nxf4 Rxf3+ 47. Nd3+ $10) 42... Rg6 { [%clk 0:12:55] } 43. Nd5 { [%clk 0:03:44] } 43... Rg7 { [%clk 0:13:23] } 44. Nf6 { [%clk 0:02:50] } 44... Rg6 { [%clk 0:11:20] } 45. Nd5 { [%clk 0:03:15] } (45. Nxh5 { Marooning the knight is the lesser evil, as g4 is too big of a threat to ignore. } 45... Rd6+ 46. Kc3 b5 47. cxb5 Bxb5 $17) 45... g4! $19 { Black now has enough play to crash through. } { [%clk 0:10:14] } 46. hxg4 { [%clk 0:03:40] } 46... hxg4 { [%clk 0:10:41] } 47. Rh5 { [%clk 0:03:44] } 47... gxf3 { [%clk 0:10:58] } 48. gxf3 { [%clk 0:04:01] } 48... Rg3 { [%clk 0:10:14] } 49. Rxe5 { [%clk 0:03:54] } 49... Rxf3+ { [%clk 0:10:31] } 50. Kc2 { [%clk 0:04:08] } 50... Kd4 { [%clk 0:10:31] } 51. Rh5 { [%clk 0:00:39] } 51... Rf2+ { [%clk 0:09:52] } 52. Kb3 { [%clk 0:00:49] } 52... f3 { [%clk 0:09:40] } 53. Nc3 { [%clk 0:00:32] } 53... Rd2 { [%clk 0:08:57] } 54. e5 { [%clk 0:00:35] } 54... f2 { [%clk 0:08:30] } 55. Rf5 { [%clk 0:01:00] } 55... a4+ { [%clk 0:08:15] } 56. Nxa4 { [%clk 0:01:09] } 56... Rd3+ { [%clk 0:08:32] } 57. Kb4 { [%clk 0:00:37] } 57... Rf3 { 0-1 Black wins. } { [%clk 0:08:48] } 0-1