[Event "Round 6: Montes Orozco, Miguel Angel - Colville, Julian"] [Site "https://lichess.org/broadcast/north-american-junior-chess-championship-u20-2025-open/round-6/Cmx4s8aa/M3Y3paQ8"] [Date "2025.11.23"] [Round "6.1"] [White "Montes Orozco, Miguel Angel"] [Black "Colville, Julian"] [Result "0-1"] [WhiteElo "2281"] [WhiteTitle "FM"] [WhiteTeam "MEX"] [WhiteFideId "5159989"] [BlackElo "2301"] [BlackTitle "FM"] [BlackTeam "USA"] [BlackFideId "30963273"] [Variant "Standard"] [ECO "B22"] [Opening "Sicilian Defense: Delayed Alapin Variation"] [StudyName "2025 North American Junior Championship"] [ChapterName "Montes Orozco, Miguel Angel - Colville, Julian"] [ChapterURL "https://lichess.org/study/xDpXfEsg/or5q3k1z"] [Annotator "https://lichess.org/@/ChessLifeOnline"] [Orientation "white"] 1. e4 { [%clk 1:30:49] } 1... c5 { [%clk 1:30:22] } 2. Nf3 { [%clk 1:31:10] } 2... e6 { [%clk 1:30:50] } 3. c3 { [%clk 1:31:15] } 3... d5 { [%clk 1:30:10] } 4. exd5 { [%clk 1:31:34] } 4... Qxd5 { [%clk 1:30:04] } 5. d4 { [%clk 1:31:28] } 5... Nf6 { [%clk 1:30:22] } 6. Na3 { [%clk 1:30:42] } 6... Nc6 { [%clk 1:29:53] } 7. Be3 { [%clk 1:30:05] } 7... cxd4 { [%clk 1:25:10] } 8. Nb5 { [%clk 1:30:20] } 8... Qd7 { [%clk 1:24:16] } 9. Nbxd4 { [%clk 1:29:47] } 9... a6 { [%clk 1:21:31] } 10. Nxc6 { [%clk 1:23:54] } 10... Qxc6 { [%clk 1:16:05] } 11. Ne5 { [%clk 1:22:10] } 11... Qe4 { [%clk 1:03:18] } 12. Nc4 { [%clk 0:53:01] } 12... Bd7 { [%clk 1:01:37] } 13. Nd6+ { [%clk 0:35:23] } 13... Bxd6 { [%clk 1:02:00] } 14. Qxd6 { [%clk 0:35:50] } 14... O-O-O { [%clk 1:01:17] } 15. Qc5+ { [%clk 0:30:24] } 15... Bc6 { [%clk 0:59:48] } 16. f3 { [%clk 0:29:02] } 16... Qh4+ { [%clk 0:58:56] } 17. Bf2 { [%clk 0:28:35] } 17... Qh5 { [%clk 0:39:08] } 18. Bc4 { [%clk 0:23:21] } 18... Qxc5 { [%clk 0:34:22] } 19. Bxc5 { [%clk 0:23:49] } 19... Nd7 { [%clk 0:34:06] } 20. Be7 { [%clk 0:23:43] } 20... Rde8 { [%clk 0:32:03] } 21. Bd6 { [%clk 0:22:19] } 21... Nb6 { [%clk 0:34:09] } 22. Be2 { [%clk 0:16:05] } 22... Rd8 { [%clk 0:33:12] } 23. O-O-O { [%clk 0:13:25] } 23... Nd5 { [%clk 0:26:18] } 24. Bg3 { [%clk 0:13:16] } 24... h5 { [%clk 0:25:54] } 25. h4 { [%clk 0:11:01] } 25... Ne3 { [%clk 0:24:26] } 26. Rxd8+ { [%clk 0:10:26] } 26... Rxd8 { [%clk 0:24:16] } 27. Rg1 { [%clk 0:10:09] } 27... f6 { [%clk 0:23:55] } 28. Bf2 { [%clk 0:09:49] } 28... Nd5 { [%clk 0:23:52] } 29. g3 { [%clk 0:09:36] } 29... g5 { [%clk 0:22:06] } 30. hxg5 { [%clk 0:04:31] } 30... fxg5 { [%clk 0:22:29] } 31. Rd1 { [%clk 0:03:58] } 31... Rh8 { [%clk 0:19:41] } 32. Bd4 { Colville's ability to outplay his opponent from this equal position makes for an impressive victory worthy of study. } { [%clk 0:01:58] } 32... e5! { At first, it looks like the pawn can't be taken because of the skewer along the e-file, but with f3-f4, maybe it can be. } { [%clk 0:18:24] } 33. Bxe5 { [%clk 0:01:18] } 33... Re8 { [%clk 0:18:47] } 34. f4 { [%clk 0:01:41] } 34... gxf4 { [%clk 0:19:13] } 35. gxf4 { [%clk 0:02:04] } 35... Nxf4 { Regaining the pawn. } { [%clk 0:19:37] } 36. Bxf4 { [%clk 0:02:24] } 36... Rxe2 { With rooks still on the board, there are still winning chances despite the presence of opposite-colored bishops. } { [%clk 0:20:01] } 37. Rd2 { [%clk 0:02:51] } 37... Re4 { [%clk 0:19:43] } 38. Rd4 { [%clk 0:03:18] } 38... Re8 { [%clk 0:18:57] } 39. Bg3 { [%clk 0:02:59] } 39... Bf3 { [%clk 0:19:14] } 40. Rd3 { [%clk 0:00:34] } 40... Bg4 { Protecting the h-pawn, which, if anything, will decide whether Black has an advantage. } { [%clk 0:19:18] } 41. c4 { [%clk 0:00:31] } 41... Re4 { [%clk 0:19:22] } 42. c5!? { White tries to pre-empt ... b7-c5, but risks over-extension by taking away a nice line from the dark-squared bishop. } { [%clk 0:00:43] } (42. b3 b5! { was the most direct response, when } 43. cxb5 axb5 $10 { and ... b5-b4 is a nice example of one pawn fixing two. }) 42... Be6 { [%clk 0:19:03] } 43. Kd2 { [%clk 0:00:34] } 43... h4 { Not getting bogged down by materialism. } { [%clk 0:18:25] } 44. Bh2 { [%clk 0:01:03] } 44... Rg4 { [%clk 0:18:27] } 45. Re3 { [%clk 0:00:46] } 45... Bxa2 { If White insists! } { [%clk 0:18:45] } 46. Re7!? { [%clk 0:00:34] } (46. Bd6 { was a bit tighter. }) 46... Rg2+ { [%clk 0:18:55] } 47. Re2 { [%clk 0:01:03] } 47... Rg7 { White can't make progress for the moment. } { [%clk 0:18:51] } 48. Be5 { [%clk 0:01:17] } 48... Rg6 { [%clk 0:18:53] } (48... Rh7 { was also a good try. } { [%cal Ga2e6,Gh4h3] }) 49. Rh2? { Too passive. } { [%clk 0:01:16] } (49. Bd6 Rh6?! (49... Bd5 { , overprotecting the b-pawn, was best. }) 50. Re8+ Kd7 51. Re7+ Kc6 52. Rc7+ $10 { would regain the pawn. }) 49... Rh6! { Black's rook enjoys more mobility than White's. } { [%clk 0:19:10] } 50. Kc3 { [%clk 0:01:21] } 50... h3 { [%clk 0:19:08] } 51. b3 { Trying to cage the bishop, but ... Ba2-b1 was on the agenda anyways. } { [%clk 0:00:49] } 51... Bb1 { [%clk 0:19:31] } 52. Rd2 { [%clk 0:00:59] } 52... Rh5 { [%clk 0:19:41] } 53. Bd6 { [%clk 0:00:32] } 53... Be4 { [%clk 0:20:04] } 54. b4?! { White's task wasn't easy, but taking more squares away from the bishop makes things worse. } { [%clk 0:00:56] } 54... Bg2 { [%clk 0:19:48] } 55. Bh2 { [%clk 0:01:16] } 55... Rf5!? { [%clk 0:20:03] } (55... Bd5 { was more precise: } 56. Kb2 Kd7 57. Kc3 Kc6 $19 { and Black goes after the b-pawn, which will be hard to defend. }) 56. Kb2 { [%clk 0:00:43] } 56... Rf1 { [%clk 0:20:23] } 57. Be5 { [%clk 0:01:00] } 57... Rh1 { [%clk 0:19:20] } 58. Rd4 { [%clk 0:01:30] } 58... Re1 { [%clk 0:19:01] } 59. Bf4 { [%clk 0:01:59] } 59... Re2+ { [%clk 0:18:37] } 60. Kc3 { [%clk 0:02:11] } 60... Rf2 { [%clk 0:18:30] } 61. Be5 { [%clk 0:02:20] } 61... Re2 { [%clk 0:15:14] } 62. Bf4 { [%clk 0:02:33] } 62... Re1 { [%clk 0:15:06] } 63. Rd3 { [%clk 0:02:29] } 63... Rf1 { [%clk 0:13:32] } 64. Be5 { [%clk 0:02:36] } 64... Rh1 { [%clk 0:13:39] } 65. Rd4?? { A miscalculation that loses the game. } { [%clk 0:00:32] } (65. Rd2 { was most accurate, preventing ... h3-h2. } 65... Re1 66. Bd6 $17 { and Black still has to prove there's a way to make progress. }) (65. Bg3 { would also work, as } 65... h2 66. Kd4! { and the rook is stuck because there are no checks. }) 65... h2! { White's king has no squares that can avoid checks from Black's rook, so the bishop has to be sacrificed. } { [%clk 0:14:00] } 66. Bxh2 { [%clk 0:00:35] } 66... Rxh2 { [%clk 0:14:25] } 67. Rg4 { [%clk 0:00:36] } 67... Bd5 { [%clk 0:14:34] } 68. Kd4 { [%clk 0:00:40] } 68... Rd2+ { [%clk 0:14:41] } 69. Ke5 { [%clk 0:01:06] } 69... Bc6 { [%clk 0:15:08] } 70. Rg8+ { [%clk 0:01:07] } 70... Rd8 { [%clk 0:15:32] } 71. Rg7 { [%clk 0:00:48] } 71... Rd5+ { [%clk 0:15:44] } 72. Ke6 { [%clk 0:01:14] } 72... Rd4 { [%clk 0:16:02] } 73. Rg8+ { [%clk 0:01:39] } 73... Kc7 { [%clk 0:16:29] } 74. Rg7+ { [%clk 0:02:04] } 74... Kb8 { The b-pawn falls, so White resigns. } { [%clk 0:16:47] } 0-1