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Diamond, Colin vs Sengupta, Nevan

2026.08.21 · game 1
White to move
PGN
[Event "Round 1: Diamond, Colin - Sengupta, Nevan"]
[Site "https://lichess.org/broadcast/2026-marshall-monthly-u2400-august/round-1/4kAg9eHT/7tTVU5Sh"]
[Date "2026.08.21"]
[Round "1.9"]
[White "Diamond, Colin"]
[Black "Sengupta, Nevan"]
[Result "1-0"]
[WhiteElo "1947"]
[WhiteFideId "30961874"]
[BlackElo "1611"]
[BlackFideId "39974200"]
[TimeControl "90+30"]
[Variant "Standard"]
[ECO "D30"]
[Opening "Queen's Gambit Declined"]
[UTCDate "2026.08.21"]
[UTCTime "23:07:08"]
[BroadcastName "2026 Marshall Monthly U2400 | August"]
[BroadcastURL "https://lichess.org/broadcast/2026-marshall-monthly-u2400-august/round-1/4kAg9eHT"]
[GameURL "https://lichess.org/broadcast/2026-marshall-monthly-u2400-august/round-1/4kAg9eHT/7tTVU5Sh"]

1. d4 { [%eval 0.15] [%clk 1:30:58] } 1... d5 { [%eval 0.27] [%clk 1:30:56] } 2. c4 { [%eval 0.22] [%clk 1:31:24] } 2... e6 { [%eval 0.17] [%clk 1:31:24] } 3. Nf3 { [%eval 0.11] [%clk 1:31:50] } 3... a6 { [%eval 0.38] [%clk 1:31:51] } 4. Bg5 { [%eval 0.32] [%clk 1:30:56] } 4... Be7 { [%eval 0.28] [%clk 1:32:16] } 5. Bxe7 { [%eval 0.28] [%clk 1:31:21] } 5... Qxe7 { [%eval 0.28] [%clk 1:32:40] } 6. Nbd2 { [%eval 0.37] [%clk 1:27:25] } 6... Nf6 { [%eval 0.3] [%clk 1:33:03] } 7. g3 { [%eval 0.31] [%clk 1:27:27] } 7... O-O { [%eval 0.3] [%clk 1:33:26] } 8. Bg2 { [%eval 0.26] [%clk 1:27:42] } 8... dxc4 { [%eval 0.52] [%clk 1:32:44] } 9. Nxc4 { [%eval 0.48] [%clk 1:25:33] } 9... c5?! { [%eval 1.27] } { Inaccuracy. Qb4+ was best. } { [%clk 1:32:50] } 10. O-O?! { [%eval 0.63] } { Inaccuracy. Nb6 was best. } { [%clk 1:24:42] } 10... Nbd7? { [%eval 1.95] } { Mistake. Nc6 was best. } { [%clk 1:32:15] } 11. dxc5 { [%eval 1.44] [%clk 1:20:08] } 11... Qxc5 { [%eval 1.54] [%clk 1:31:24] } 12. Rc1 { [%eval 1.55] [%clk 1:18:45] } 12... Qe7?! { [%eval 2.63] } { Inaccuracy. Nb6 was best. } { [%clk 1:31:24] } 13. Qd6 { [%eval 2.61] [%clk 1:14:48] } 13... Qxd6 { [%eval 2.53] [%clk 1:29:12] } 14. Nxd6 { [%eval 2.26] [%clk 1:13:38] } 14... Nb6?! { [%eval 3.14] } { Inaccuracy. Rd8 was best. } { [%clk 1:28:52] } 15. Ne5 { [%eval 2.96] [%clk 1:11:12] } 15... Nfd5 { [%eval 3.52] [%clk 1:27:58] } 16. e4 { [%eval 3.68] [%clk 1:09:19] } 16... Nf6 { [%eval 3.74] [%clk 1:27:35] } 17. Rc7 { [%eval 3.31] [%clk 1:07:20] } 17... Bd7?! { [%eval 4.54] } { Inaccuracy. Nfd7 was best. } { [%clk 1:23:55] } 18. Nxd7?! { [%eval 3.35] } { Inaccuracy. Ndxf7 was best. } { [%clk 1:00:52] } 18... Nbxd7 { [%eval 3.44] [%clk 1:23:41] } 19. Rxb7? { [%eval 1.9] } { Mistake. f4 was best. } { [%clk 0:59:57] } 19... Rfd8? { [%eval 4.06] } { Mistake. Rab8 was best. } { [%clk 1:22:41] } 20. Rc7? { [%eval 2.4] } { Mistake. f4 was best. } { [%clk 0:54:36] } 20... Ne5 { [%eval 2.3] [%clk 1:21:32] } 21. f4 { [%eval 2.13] [%clk 0:53:08] } 21... Neg4? { [%eval 4.01] } { Mistake. Rxd6 was best. } { [%clk 1:19:41] } 22. e5 { [%eval 3.19] [%clk 0:53:01] } 22... Rab8 { [%eval 3.01] [%clk 1:18:37] } 23. Rfc1 { [%eval 3.17] [%clk 0:43:55] } 23... Ne8 { [%eval 2.99] [%clk 1:16:17] } 24. Nxe8 { [%eval 3.07] [%clk 0:37:11] } 24... Rxe8 { [%eval 3.25] [%clk 1:16:26] } 25. b3 { [%eval 3.1] [%clk 0:37:30] } 25... Red8 { [%eval 3.55] [%clk 1:16:32] } 26. Bb7 { [%eval 3.3] [%clk 0:31:47] } 26... a5 { [%eval 3.47] [%clk 1:15:30] } 27. Rc8 { [%eval 3.42] [%clk 0:31:26] } 27... Ne3 { [%eval 3.8] [%clk 1:15:17] } 28. Rxb8 { [%eval 3.71] [%clk 0:30:51] } 28... Rxb8 { [%eval 3.6] [%clk 1:15:40] } 29. Rc8+ { [%eval 3.49] [%clk 0:31:17] } 29... Rxc8 { [%eval 3.63] [%clk 1:16:01] } 30. Bxc8 { [%eval 3.57] [%clk 0:31:44] } 30... Kf8 { [%eval 3.55] [%clk 1:15:19] } 31. Ba6 { [%eval 3.42] [%clk 0:30:33] } 31... Ke7 { [%eval 3.35] [%clk 1:15:25] } 32. Kf2 { [%eval 3.56] [%clk 0:27:10] } 32... Ng4+ { [%eval 3.55] [%clk 1:15:45] } 33. Kg2 { [%eval 3.45] [%clk 0:26:11] } 33... Ne3+ { [%eval 3.96] [%clk 1:15:59] } 34. Kf3 { [%eval 3.72] [%clk 0:26:08] } 34... Nc2 { [%eval 4.23] [%clk 1:16:24] } 35. Bd3 { [%eval 4.44] [%clk 0:25:56] } 35... Nb4 { [%eval 4.34] [%clk 1:16:45] } 36. Bb1 { [%eval 4.15] [%clk 0:23:58] } 36... Nd5 { [%eval 4.53] [%clk 1:16:46] } 37. Be4 { [%eval 4.65] [%clk 0:22:57] } 37... Nc3 { [%eval 4.52] [%clk 1:17:03] } 38. a3 { [%eval 4.38] [%clk 0:22:59] } 38... Nb5 { [%eval 4.42] [%clk 1:17:20] } 39. b4 { [%eval 3.55] [%clk 0:13:48] } 39... a4 { [%eval 3.62] [%clk 1:16:11] } 40. Ke3 { [%eval 3.55] [%clk 0:11:52] } 40... Nxa3 { [%eval 3.16] [%clk 1:16:18] } 41. Kd4 { [%eval 3.35] [%clk 0:06:36] } 41... Nb5+ { [%eval 3.08] [%clk 1:16:25] } 42. Kc4 { [%eval 3.48] [%clk 0:06:54] } 42... Nc7?! { [%eval 5.45] } { Inaccuracy. a3 was best. } { [%clk 1:15:22] } 43. Bc6 { [%eval 5.34] [%clk 0:06:10] } 43... Nd5 { [%eval 5.46] [%clk 1:14:38] } 44. Bxa4 { [%eval 5.01] [%clk 0:05:53] } 44... Ne3+ { [%eval 6.08] [%clk 1:14:35] } 45. Kc5 { [%eval 5.72] [%clk 0:04:51] } 45... Kd8 { [%eval 5.58] [%clk 1:14:58] } 46. Bb3 { [%eval 5.41] [%clk 0:04:25] } 46... Nf1 { [%eval 5.52] [%clk 1:15:17] } 47. Bc4 { [%eval 5.73] [%clk 0:04:30] } 47... Nd2 { [%eval 5.98] [%clk 1:12:22] } 48. b5 { [%eval 5.68] [%clk 0:04:19] } 48... Ne4+ { [%eval 6.31] [%clk 1:10:57] } 49. Kc6 { [%eval 6.25] [%clk 0:04:35] } 49... Nd2 { [%eval 6.34] [%clk 1:09:55] } 50. Ba2 { [%eval 6.41] [%clk 0:04:51] } 50... Nf3 { [%eval 6.64] [%clk 1:09:43] } 51. b6 { [%eval 6.29] [%clk 0:04:27] } 51... Nd4+ { [%eval 6.78] [%clk 1:09:57] } 52. Kc5 { [%eval 6.95] [%clk 0:04:36] } 52... Nf5 { [%eval 7.04] [%clk 1:09:55] } 53. Bb1 { [%eval 6.98] [%clk 0:04:30] } 53... Ne7 { [%eval 6.94] [%clk 1:08:47] } 54. Be4 { [%eval 6.47] [%clk 0:04:55] } 54... h6?! { [%eval 9.55] } { Inaccuracy. Kd7 was best. } { [%clk 1:08:09] } 55. Kd6 { [%eval 9.06] [%clk 0:04:53] } 55... Nc8+ { [%eval 9.08] [%clk 1:08:31] } 56. Kc6 { [%eval 8.64] [%clk 0:05:16] } 56... Ne7+ { [%eval 8.31] [%clk 1:08:14] } 57. Kb7 { [%eval 7.69] [%clk 0:05:36] } 57... g5 { [%eval 10.98] [%clk 1:07:38] } 58. Ka8 { [%eval 10.24] [%clk 0:04:59] } 58... Nc8 { [%eval 10.54] [%clk 1:06:48] } 59. b7 { [%eval 10.98] [%clk 0:04:53] } 59... Nb6+ { [%eval 12.35] [%clk 1:07:12] } 60. Ka7 { [%eval 10.95] [%clk 0:05:16] } 60... Nd7 { [%eval 11.77] [%clk 1:07:35] } 61. b8=Q+ { [%eval 11.42] [%clk 0:05:32] } 61... Nxb8 { [%eval 9.93] [%clk 1:07:59] } 62. Kxb8 { [%eval 7.68] [%clk 0:05:58] } 62... gxf4? { [%eval #18] } { Checkmate is now unavoidable. Kd7 was best. } { [%clk 1:08:21] } 63. gxf4 { [%eval #17] [%clk 0:06:21] } 63... Ke7 { [%eval #16] [%clk 1:08:40] } 64. Kc7 { [%eval 54.44] [%clk 0:06:41] } 64... f6?! { [%eval #13] } { Checkmate is now unavoidable. h5 was best. } { [%clk 1:08:57] } 65. h4 { [%eval #12] [%clk 0:06:57] } 65... Ke8 { [%eval #10] [%clk 1:09:05] } 66. Kd6 { [%eval #13] [%clk 0:07:08] } 66... Kf7 { [%eval #9] [%clk 1:09:29] } 67. h5 { [%eval #9] [%clk 0:07:16] } 67... fxe5 { [%eval #9] [%clk 1:09:46] } 68. fxe5 { [%eval #8] [%clk 0:07:39] } 68... Kf8 { [%eval #7] [%clk 1:10:05] } 69. Kxe6 { [%eval #7] [%clk 0:08:01] } 69... Ke8 { [%eval #7] [%clk 1:10:31] } 70. Bg6+ { [%eval #7] [%clk 0:08:13] } 70... Kf8 { [%eval #4] [%clk 1:10:50] } 71. Kf6 { [%eval #3] [%clk 0:07:59] } 71... Kg8 { [%eval #3] [%clk 1:11:14] } 72. e6 { [%eval #2] [%clk 0:08:21] } 72... Kh8 { [%eval #2] [%clk 1:11:38] } 73. e7 { [%eval #1] [%clk 0:08:41] } 73... Kg8 { [%eval #1] [%clk 1:12:05] } 74. e8=Q# { [%clk 0:08:35] } 1-0
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