Event: Round 5: Iftikar Alom Mazumdar - Roy Chowdhury, Saptarshi
Date: 2025-04-20
White: Iftikar Alom Mazumdar
WhiteElo: 1838
Black: Roy Chowdhury, Saptarshi
BlackTitle: GM
BlackElo: 2297
Result: 0-1
ECO: A53
Opening: Old Indian Defense: Janowski Variation
Variant: Standard
TimeControl: 10+5

1. d4 { [%eval 0.17] [%clk 0:10:08] } 1... Nf6 { [%eval 0.19] [%clk 0:10:08] } 2. c4 { [%eval 0.18] [%clk 0:10:12] } 2... d6 { [%eval 0.47] [%clk 0:10:12] } 3. Nc3 { [%eval 0.4] [%clk 0:10:12] } 3... Bf5 { [%eval 0.65] [%clk 0:10:16] } 4. Nf3 { [%eval 0.57] [%clk 0:10:15] } 4... c6 { [%eval 0.59] [%clk 0:10:20] } 5. Nh4 { [%eval 0.68] [%clk 0:10:18] } 5... Bd7 { [%eval 0.75] [%clk 0:10:22] } 6. e4 { [%eval 0.64] [%clk 0:10:20] } 6... e5 { [%eval 0.69] [%clk 0:10:25] } 7. Nf3 { [%eval 0.71] [%clk 0:10:24] } 7... Qc7 { [%eval 0.95] [%clk 0:10:13] } 8. Be2 { [%eval 1.01] [%clk 0:10:25] } 8... Be7 { [%eval 1.28] [%clk 0:10:14] } 9. O-O { [%eval 0.93] [%clk 0:10:24] } 9... O-O { [%eval 0.97] [%clk 0:10:17] } 10. h3 { [%eval 0.91] [%clk 0:10:27] } 10... Re8 { [%eval 0.92] [%clk 0:10:18] } 11. Be3 { [%eval 0.98] [%clk 0:09:33] } 11... h6 { [%eval 1.0] [%clk 0:10:20] } 12. Rc1 { [%eval 1.05] [%clk 0:09:33] } 12... Bf8 { [%eval 1.23] [%clk 0:09:44] } 13. d5 { [%eval 1.29] [%clk 0:09:33] } 13... c5?! { [%eval 1.92] } { Inaccuracy. a5 was best. } { [%clk 0:09:48] } 14. Re1 { [%eval 1.79] [%clk 0:09:18] } 14... a6 { [%eval 1.72] [%clk 0:09:48] } 15. a3 { [%eval 1.58] [%clk 0:09:13] } 15... Bc8 { [%eval 1.46] [%clk 0:09:49] } 16. b4 { [%eval 1.56] [%clk 0:09:12] } 16... Nbd7 { [%eval 1.54] [%clk 0:09:53] } 17. Bf1 { [%eval 1.16] [%clk 0:09:11] } 17... b6 { [%eval 1.38] [%clk 0:09:44] } 18. g3 { [%eval 1.28] [%clk 0:08:43] } 18... g6 { [%eval 1.35] [%clk 0:09:41] } 19. Nd2 { [%eval 1.27] [%clk 0:07:15] } 19... Bg7 { [%eval 1.42] [%clk 0:09:37] } 20. Nb3 { [%eval 0.86] [%clk 0:07:13] } 20... Bb7 { [%eval 1.14] [%clk 0:09:27] } 21. Rb1 { [%eval 1.26] [%clk 0:06:44] } 21... Rab8 { [%eval 1.46] [%clk 0:09:16] } 22. Qd2 { [%eval 1.32] [%clk 0:06:37] } 22... h5 { [%eval 1.32] [%clk 0:09:11] } 23. Rec1 { [%eval 1.15] [%clk 0:06:31] } 23... Nh7 { [%eval 1.38] [%clk 0:08:55] } 24. h4?! { [%eval 0.74] } { Inaccuracy. Qc2 was best. } { [%clk 0:05:38] } 24... Bc8 { [%eval 0.78] [%clk 0:08:52] } 25. bxc5 { [%eval 0.67] [%clk 0:04:54] } 25... bxc5 { [%eval 0.7] [%clk 0:08:52] } 26. Na4? { [%eval -0.44] } { Mistake. Bh3 was best. } { [%clk 0:04:42] } 26... Ndf6? { [%eval 0.87] } { Mistake. f5 was best. } { [%clk 0:08:25] } 27. f3 { [%eval 1.15] [%clk 0:04:45] } 27... Bd7?! { [%eval 2.02] } { Inaccuracy. Nd7 was best. } { [%clk 0:08:29] } 28. Naxc5 { [%eval 1.82] [%clk 0:03:55] } 28... dxc5 { [%eval 1.77] [%clk 0:08:31] } 29. Nxc5 { [%eval 1.85] [%clk 0:03:59] } 29... Rxb1 { [%eval 1.86] [%clk 0:08:13] } 30. Rxb1 { [%eval 1.85] [%clk 0:04:03] } 30... Bc8 { [%eval 1.92] [%clk 0:08:17] } 31. a4? { [%eval 0.38] } { Mistake. Nd3 was best. } { [%clk 0:03:44] } 31... Bf8?! { [%eval 1.36] } { Inaccuracy. g5 was best. } { [%clk 0:08:17] } 32. Nb3?! { [%eval 0.65] } { Inaccuracy. Nd3 was best. } { [%clk 0:03:21] } 32... Nd7? { [%eval 2.21] } { Mistake. Bg4 was best. } { [%clk 0:08:07] } 33. Qf2?? { [%eval 0.0] } { Blunder. c5 was best. } { [%clk 0:03:06] } 33... f5 { [%eval 0.07] [%clk 0:07:51] } 34. c5 { [%eval 0.17] [%clk 0:02:15] } 34... fxe4 { [%eval 0.37] [%clk 0:07:30] } 35. fxe4? { [%eval -1.07] } { Mistake. d6 was best. } { [%clk 0:02:06] } 35... Ndf6 { [%eval -0.98] [%clk 0:07:24] } 36. Bd3?! { [%eval -2.16] } { Inaccuracy. d6 was best. } { [%clk 0:00:47] } 36... Qd7? { [%eval -0.75] } { Mistake. Ng4 was best. } { [%clk 0:07:02] } 37. c6 { [%eval -0.97] [%clk 0:00:37] } 37... Qh3?? { [%eval 2.39] } { Blunder. Qg7 was best. } { [%clk 0:06:41] } 38. Qg2 { [%eval 2.35] [%clk 0:00:30] } 38... Qg4 { [%eval 2.9] [%clk 0:06:28] } 39. Nc5? { [%eval 1.12] } { Mistake. Nd2 was best. } { [%clk 0:00:23] } 39... g5?! { [%eval 2.2] } { Inaccuracy. a5 was best. } { [%clk 0:05:48] } 40. Be2 { [%eval 2.04] [%clk 0:00:21] } 40... Bxc5?! { [%eval 3.13] } { Inaccuracy. Qh3 was best. } { [%clk 0:05:51] } 41. Bxc5 { [%eval 3.11] [%clk 0:00:18] } 41... Qxe4 { [%eval 3.23] [%clk 0:05:55] } 42. d6?? { [%eval -5.1] } { Blunder. Qxe4 was best. } { [%clk 0:00:10] } 42... Qxb1+ { [%eval -4.94] [%clk 0:05:54] } 43. Bf1 { [%eval -5.44] [%clk 0:00:10] } 43... Qc1 { [%eval -5.15] [%clk 0:05:46] } 44. Qa2+ { [%eval -4.9] [%clk 0:00:13] } 44... Be6 { [%eval -5.22] [%clk 0:05:41] } 45. Qa3 { [%eval -5.2] [%clk 0:00:18] } 45... Qxa3 { [%eval -5.09] [%clk 0:05:38] } 46. Bxa3 { [%eval -5.06] [%clk 0:00:21] } 46... gxh4 { [%eval -4.93] [%clk 0:05:20] } 47. gxh4 { [%eval -4.94] [%clk 0:00:25] } 47... Bd5 { [%eval -4.89] [%clk 0:04:59] } 48. d7 { [%eval -4.94] [%clk 0:00:20] } 48... Nxd7 { [%eval -4.9] [%clk 0:04:57] } 49. cxd7 { [%eval -4.77] [%clk 0:00:24] } 49... Rd8 { [%eval -4.89] [%clk 0:05:01] } 50. Bh3 { [%eval -5.67] [%clk 0:00:21] } 50... Kf7 { [%eval -5.61] [%clk 0:05:04] } 51. Bd6 { [%eval -5.42] [%clk 0:00:21] } 51... Be6 { [%eval -5.38] [%clk 0:05:05] } 52. Bf1 { [%eval -6.04] [%clk 0:00:22] } 52... Rxd7 { [%eval -5.86] [%clk 0:05:04] } 53. Bxe5 { [%eval -5.96] [%clk 0:00:26] } 53... Nf6 { [%eval -5.68] [%clk 0:05:08] } 54. Bxa6 { [%eval -5.16] [%clk 0:00:28] } 54... Ng4 { [%eval -5.02] [%clk 0:05:06] } 55. Bf4?? { [%eval #-10] } { Checkmate is now unavoidable. Be2 was best. } { [%clk 0:00:29] } 55... Rd4?? { [%eval -6.06] } { Lost forced checkmate sequence. Rd1+ was best. } { [%clk 0:05:10] } 56. Bg5 { [%eval -6.16] [%clk 0:00:31] } 56... Rxa4 { [%eval -5.6] [%clk 0:05:13] } 0-1