Event: Quantbox Chennai Grandmasters Chess Tournament -Challengers 2025
Site: https://lichess.org/broadcast/chennai-grand-masters-2025--challengers/round-4/b0JpybKT/WAfaACUn
White: Harshavardhan G B
WhiteTitle: IM
WhiteElo: 2454
Black: Ghosh, Diptayan
BlackTitle: GM
BlackElo: 2576
Result: 0-1
ECO: E51
Opening: Nimzo-Indian Defense: Normal Variation, Ragozin Variation
Variant: Standard
TimeControl: 90 minutes + 30 seconds per move

1. Nf3 { [%eval 0.1] [%clk 1:30:31] } 1... d5 { [%eval 0.18] [%clk 1:30:23] } 2. c4 { [%eval 0.0] [%clk 1:30:33] } 2... e6 { [%eval 0.15] [%clk 1:29:22] } 3. d4 { [%eval 0.11] [%clk 1:30:29] } 3... Nf6 { [%eval 0.17] [%clk 1:29:46] } 4. Nc3 { [%eval 0.08] [%clk 1:30:51] } 4... Bb4 { [%eval 0.16] [%clk 1:29:55] } 5. e3 { [%eval 0.03] [%clk 1:25:49] } 5... O-O { [%eval 0.13] [%clk 1:30:04] } 6. Bd2 { [%eval 0.11] [%clk 1:26:11] } 6... Nbd7 { [%eval 0.11] [%clk 1:30:19] } 7. Be2 { [%eval 0.0] [%clk 1:26:19] } 7... dxc4 { [%eval 0.0] [%clk 1:23:21] } 8. Bxc4 { [%eval -0.03] [%clk 1:25:35] } 8... a6 { [%eval -0.06] [%clk 1:22:54] } 9. Bd3 { [%eval -0.21] [%clk 1:24:19] } 9... c5 { [%eval 0.03] [%clk 1:17:33] } 10. a3 { [%eval -0.07] [%clk 1:19:57] } 10... Ba5 { [%eval 0.02] [%clk 1:17:06] } 11. Qe2 { [%eval -0.1] [%clk 1:12:07] } 11... Bc7 { [%eval 0.05] [%clk 1:12:37] } 12. O-O { [%eval -0.17] [%clk 1:09:13] } 12... b6 { [%eval 0.0] [%clk 1:09:00] } 13. b4 { [%eval -0.12] [%clk 1:05:35] } 13... cxd4 { [%eval -0.22] [%clk 1:04:18] } 14. exd4 { [%eval -0.21] [%clk 1:05:03] } 14... Bb7 { [%eval -0.16] [%clk 1:03:42] } 15. Bg5 { [%eval -0.23] [%clk 1:04:49] } 15... Qb8 { [%eval -0.14] [%clk 0:59:38] } 16. Rfe1 { [%eval -0.13] [%clk 0:59:07] } 16... Bf4 { [%eval -0.16] [%clk 0:51:03] } 17. Bh4 { [%eval -0.28] [%clk 0:54:13] } 17... Bxf3 { [%eval 0.0] [%clk 0:42:17] } 18. Qxf3 { [%eval -0.01] [%clk 0:54:37] } 18... Bxh2+ { [%eval 0.08] [%clk 0:42:13] } 19. Kh1 { [%eval 0.08] [%clk 0:54:05] } 19... Bf4 { [%eval 0.24] [%clk 0:42:04] } 20. Ne4 { [%eval 0.33] [%clk 0:35:09] } 20... Nd5 { [%eval 0.23] [%clk 0:37:51] } 21. g3 { [%eval 0.0] [%clk 0:30:31] } 21... Bh6 { [%eval 0.0] [%clk 0:37:01] } 22. Bc4 { [%eval 0.05] [%clk 0:27:47] } 22... Kh8 { [%eval 0.56] [%clk 0:22:22] } 23. Bxd5?! { [%eval -0.22] } { Inaccuracy. Kg2 was best. } { [%clk 0:20:15] } 23... exd5 { [%eval -0.32] [%clk 0:22:48] } 24. Nc3?! { [%eval -0.94] } { Inaccuracy. Ng5 was best. } { [%clk 0:14:23] } 24... Bd2?! { [%eval 0.15] } { Inaccuracy. g5 was best. } { [%clk 0:19:55] } 25. Re2 { [%eval 0.14] [%clk 0:14:29] } 25... Bxc3 { [%eval 0.15] [%clk 0:20:07] } 26. Qxc3 { [%eval 0.17] [%clk 0:14:55] } 26... Qd6 { [%eval 0.19] [%clk 0:08:51] } 27. Be7 { [%eval 0.06] [%clk 0:15:17] } 27... Qh6+ { [%eval 0.07] [%clk 0:09:16] } 28. Kg2 { [%eval 0.04] [%clk 0:15:43] } 28... Rfe8 { [%eval 0.51] [%clk 0:09:00] } 29. Rae1 { [%eval 0.65] [%clk 0:14:03] } 29... Qg6 { [%eval 0.72] [%clk 0:07:29] } 30. Qf3 { [%eval 0.74] [%clk 0:11:33] } 30... Nf8 { [%eval 0.62] [%clk 0:05:58] } 31. Bxf8 { [%eval 0.09] [%clk 0:11:57] } 31... Rxf8 { [%eval 0.1] [%clk 0:06:25] } 32. Re7 { [%eval 0.14] [%clk 0:12:15] } 32... Rad8 { [%eval 0.1] [%clk 0:04:53] } 33. R1e5 { [%eval 0.08] [%clk 0:12:15] } 33... Qf6 { [%eval 0.11] [%clk 0:04:16] } 34. Qxf6 { [%eval 0.16] [%clk 0:11:25] } 34... gxf6 { [%eval 0.12] [%clk 0:04:45] } 35. Re3 { [%eval 0.16] [%clk 0:11:41] } 35... Rd6 { [%eval 0.18] [%clk 0:04:33] } 36. Rc7 { [%eval 0.14] [%clk 0:10:23] } 36... b5 { [%eval 0.15] [%clk 0:04:49] } 37. Kf3 { [%eval 0.0] [%clk 0:08:35] } 37... Kg7 { [%eval 0.0] [%clk 0:05:11] } 38. Kf4 { [%eval 0.11] [%clk 0:08:59] } 38... Kg6 { [%eval 0.0] [%clk 0:05:38] } 39. g4 { [%eval 0.0] [%clk 0:08:31] } 39... h6 { [%eval 0.03] [%clk 0:04:08] } 40. f3 { [%eval 0.14] [%clk 0:06:47] } 40... Rh8?? { [%eval 2.22] } { Blunder. Re6 was best. } { [%clk 0:03:22] } 41. Ree7 { [%eval 2.47] [%clk 0:05:31] } 41... Rf8 { [%eval 2.04] [%clk 0:03:51] } 42. Ra7? { [%eval 0.78] } { Mistake. Red7 was best. } { [%clk 0:05:45] } 42... Kg7 { [%eval 0.73] [%clk 0:02:57] } 43. Reb7 { [%eval 0.31] [%clk 0:05:15] } 43... Kg6?? { [%eval 2.1] } { Blunder. f5 was best. } { [%clk 0:03:09] } 44. Rc7 { [%eval 1.83] [%clk 0:05:41] } 44... Kg7 { [%eval 2.08] [%clk 0:03:09] } 45. Re7 { [%eval 2.16] [%clk 0:06:05] } 45... Kg6 { [%eval 2.18] [%clk 0:03:35] } 46. Rac7? { [%eval 0.67] } { Mistake. Red7 was best. } { [%clk 0:06:25] } 46... Rdd8? { [%eval 2.22] } { Mistake. a5 was best. } { [%clk 0:02:22] } 47. Rc6 { [%eval 2.42] [%clk 0:05:05] } 47... Rc8 { [%eval 2.27] [%clk 0:02:38] } 48. Rc5 { [%eval 1.82] [%clk 0:02:51] } 48... Rcd8 { [%eval 1.76] [%clk 0:03:00] } 49. Kg3? { [%eval 0.08] } { Mistake. Rc6 was best. } { [%clk 0:02:31] } 49... Rd6? { [%eval 1.62] } { Mistake. f5 was best. } { [%clk 0:03:18] } 50. Kf4 { [%eval 1.27] [%clk 0:02:37] } 50... Rdd8?! { [%eval 2.27] } { Inaccuracy. Kg7 was best. } { [%clk 0:03:44] } 51. Rc6 { [%eval 2.47] [%clk 0:01:57] } 51... Rc8 { [%eval 2.23] [%clk 0:04:11] } 52. Rec7 { [%eval 2.53] [%clk 0:01:43] } 52... Rxc7 { [%eval 2.74] [%clk 0:03:40] } 53. Rxc7 { [%eval 2.51] [%clk 0:02:07] } 53... Re8 { [%eval 2.58] [%clk 0:04:01] } 54. Rd7 { [%eval 2.07] [%clk 0:01:45] } 54... Rc8 { [%eval 2.44] [%clk 0:03:28] } 55. Rd6? { [%eval 1.2] } { Mistake. Rxd5 was best. } { [%clk 0:01:51] } 55... Rc4? { [%eval 2.42] } { Mistake. Rc3 was best. } { [%clk 0:02:51] } 56. Rxa6?? { [%eval 0.0] } { Blunder. Rxd5 was best. } { [%clk 0:02:15] } 56... Rxd4+ { [%eval 0.0] [%clk 0:03:17] } 57. Ke3 { [%eval 0.0] [%clk 0:02:39] } 57... Rc4 { [%eval 0.0] [%clk 0:03:36] } 58. Kd3 { [%eval 0.0] [%clk 0:02:57] } 58... d4 { [%eval 0.0] [%clk 0:02:51] } 59. f4 { [%eval 0.0] [%clk 0:03:19] } 59... Rc3+ { [%eval 0.0] [%clk 0:01:47] } 60. Kxd4 { [%eval 0.0] [%clk 0:03:43] } 60... Rc4+ { [%eval 0.0] [%clk 0:01:54] } 61. Ke3 { [%eval 0.0] [%clk 0:04:07] } 61... Rc3+ { [%eval 0.0] [%clk 0:02:21] } 62. Kf2 { [%eval 0.0] [%clk 0:04:03] } 62... Rc4 { [%eval 0.0] [%clk 0:02:35] } 63. Kf3 { [%eval 0.0] [%clk 0:03:37] } 63... Rc3+ { [%eval 0.0] [%clk 0:03:00] } 64. Ke2 { [%eval -0.05] [%clk 0:03:53] } 64... Rg3 { [%eval -0.07] [%clk 0:02:55] } 65. Ra5 { [%eval -0.1] [%clk 0:04:05] } 65... f5 { [%eval -0.26] [%clk 0:03:14] } 66. Rxb5?? { [%eval -2.93] } { Blunder. gxf5+ was best. } { [%clk 0:03:41] } 66... fxg4 { [%eval -2.79] [%clk 0:03:21] } 67. a4 { [%eval -2.73] [%clk 0:04:07] } 67... Ra3 { [%eval -2.64] [%clk 0:03:16] } 68. a5 { [%eval -2.07] [%clk 0:04:31] } 68... f6?? { [%eval -0.06] } { Blunder. h5 was best. } { [%clk 0:03:36] } 69. Rb8?? { [%eval -4.92] } { Blunder. Rd5 was best. } { [%clk 0:03:35] } 69... h5 { [%eval -5.05] [%clk 0:03:56] } 70. Rh8 { [%eval -5.51] [%clk 0:02:49] } 70... Ra4 { [%eval -5.47] [%clk 0:04:10] } 71. Rg8+ { [%eval -5.94] [%clk 0:03:07] } 71... Kf5 { [%eval -6.07] [%clk 0:04:34] } 72. Rb8 { [%eval -6.56] [%clk 0:03:21] } 72... h4 { [%eval -6.29] [%clk 0:04:46] } 73. Ke3 { [%eval -6.89] [%clk 0:03:39] } 73... Ra3+ { [%eval -6.61] [%clk 0:04:46] } 74. Kd4 { [%eval -8.13] [%clk 0:04:03] } 74... g3 { [%eval -8.59] [%clk 0:05:03] } 75. Rg8 { [%eval -9.45] [%clk 0:04:29] } 75... h3 { [%eval -8.44] [%clk 0:05:19] } 76. a6? { [%eval #-13] } { Checkmate is now unavoidable. Kd5 was best. } { [%clk 0:04:41] } 76... h2 { [%eval -11.76] [%clk 0:05:42] } 0-1