Event: Round 1: Bortnyk, Mykola - Tanenbaum, Zachary
Site: https://lichess.org/broadcast/2025-marshall-chess-club-gmim-labor-day-invitational--im/round-1/s7ah7a7B/69TQEfwt
White: Bortnyk, Mykola
WhiteTitle: IM
WhiteElo: 2389
Black: Tanenbaum, Zachary
BlackTitle: FM
BlackElo: 2302
Result: 1-0
ECO: D27
Opening: Queen's Gambit Accepted: Classical Defense, Main Line
Variant: Standard
TimeControl: 90+30

1. d4 { [%eval 0.17] [%clk 1:09:36] } 1... d5 { [%eval 0.2] [%clk 1:30:58] } 2. Nf3 { [%eval 0.08] [%clk 1:09:42] } 2... e6 { [%eval 0.19] [%clk 1:31:23] } 3. c4 { [%eval 0.11] [%clk 1:09:44] } 3... dxc4 { [%eval 0.18] [%clk 1:29:24] } 4. e3 { [%eval 0.14] [%clk 1:09:26] } 4... Nf6 { [%eval 0.25] [%clk 1:29:43] } 5. Bxc4 { [%eval 0.15] [%clk 1:09:43] } 5... c5 { [%eval 0.22] [%clk 1:29:58] } 6. O-O { [%eval 0.21] [%clk 1:09:37] } 6... a6 { [%eval 0.13] [%clk 1:30:10] } 7. Bd3 { [%eval 0.0] [%clk 1:05:33] } 7... Nc6 { [%eval 0.26] [%clk 1:30:15] } 8. Nc3 { [%eval 0.15] [%clk 1:05:31] } 8... Be7 { [%eval 0.59] [%clk 1:30:04] } 9. dxc5 { [%eval 0.52] [%clk 1:04:53] } 9... Bxc5 { [%eval 0.48] [%clk 1:30:19] } 10. a3 { [%eval 0.49] [%clk 1:04:53] } 10... O-O { [%eval 0.45] [%clk 1:28:57] } 11. b4 { [%eval 0.52] [%clk 1:04:15] } 11... Be7 { [%eval 0.94] [%clk 1:27:04] } 12. Qc2 { [%eval 0.55] [%clk 1:01:57] } 12... Bd7 { [%eval 0.61] [%clk 1:12:52] } 13. Rd1 { [%eval 0.58] [%clk 1:00:53] } 13... Rc8 { [%eval 0.55] [%clk 1:12:25] } 14. Bb2 { [%eval 0.63] [%clk 1:00:51] } 14... Qc7 { [%eval 0.75] [%clk 1:04:51] } 15. b5?! { [%eval 0.09] } { Inaccuracy. Ne4 was best. } { [%clk 0:59:53] } 15... axb5 { [%eval 0.4] [%clk 0:59:24] } 16. Nxb5 { [%eval 0.34] [%clk 0:59:59] } 16... Qb6 { [%eval 0.43] [%clk 0:45:30] } 17. Bxf6 { [%eval 0.19] [%clk 0:54:35] } 17... Bxf6 { [%eval 0.25] [%clk 0:45:34] } 18. Rab1 { [%eval 0.22] [%clk 0:54:33] } 18... Ne5? { [%eval 1.75] } { Mistake. Na7 was best. } { [%clk 0:16:58] } 19. Nxe5 { [%eval 1.75] [%clk 0:52:43] } 19... Bxe5 { [%eval 1.94] [%clk 0:12:28] } 20. Bxh7+ { [%eval 1.86] [%clk 0:53:05] } 20... Kh8 { [%eval 1.93] [%clk 0:12:57] } 21. Qe4? { [%eval 0.3] } { Mistake. Qe2 was best. } { [%clk 0:53:33] } 21... Bxb5 { [%eval 0.21] [%clk 0:10:37] } 22. Qh4 { [%eval 0.13] [%clk 0:53:33] } 22... Rfd8 { [%eval 0.3] [%clk 0:09:50] } 23. Bd3+ { [%eval 0.12] [%clk 0:47:54] } 23... Kg8 { [%eval 0.11] [%clk 0:10:17] } 24. Qh7+ { [%eval 0.21] [%clk 0:48:18] } 24... Kf8 { [%eval 0.37] [%clk 0:10:46] } 25. Bxb5 { [%eval 0.47] [%clk 0:48:37] } 25... Rxd1+ { [%eval 0.27] [%clk 0:07:52] } 26. Rxd1 { [%eval 0.22] [%clk 0:49:04] } 26... g6 { [%eval 0.21] [%clk 0:06:12] } 27. a4 { [%eval 0.23] [%clk 0:48:41] } 27... Rd8 { [%eval 0.2] [%clk 0:05:28] } 28. Rc1 { [%eval 0.19] [%clk 0:48:57] } 28... Qd6 { [%eval 0.26] [%clk 0:04:23] } 29. Qh4 { [%eval 0.1] [%clk 0:46:46] } 29... Kg7 { [%eval 0.07] [%clk 0:03:17] } 30. g3 { [%eval 0.06] [%clk 0:47:01] } 30... Qd2 { [%eval 0.23] [%clk 0:03:16] } 31. Rf1 { [%eval 0.26] [%clk 0:46:51] } 31... Bf6 { [%eval 0.27] [%clk 0:03:13] } 32. Qe4 { [%eval 0.24] [%clk 0:47:10] } 32... Qd5 { [%eval 0.11] [%clk 0:03:14] } 33. Qxd5 { [%eval 0.1] [%clk 0:47:02] } 33... Rxd5 { [%eval 0.14] [%clk 0:03:29] } 34. Rc1 { [%eval 0.08] [%clk 0:47:20] } 34... Bd8 { [%eval 0.08] [%clk 0:03:28] } 35. Rc8 { [%eval 0.08] [%clk 0:47:36] } 35... Ba5 { [%eval 0.1] [%clk 0:01:57] } 36. Rb8 { [%eval 0.2] [%clk 0:47:06] } 36... b6 { [%eval 0.07] [%clk 0:02:16] } 37. Be8 { [%eval 0.14] [%clk 0:47:04] } 37... Rd1+ { [%eval 0.07] [%clk 0:02:00] } 38. Kg2 { [%eval 0.25] [%clk 0:47:32] } 38... Kf8 { [%eval 0.12] [%clk 0:02:02] } 39. h4 { [%eval 0.32] [%clk 0:47:39] } 39... Ke7 { [%eval 0.55] [%clk 0:01:29] } 40. Bb5 { [%eval 0.4] [%clk 0:46:52] } 40... Rc1 { [%eval 0.48] [%clk 0:00:59] } 41. g4 { [%eval 0.63] [%clk 0:46:55] } 41... Rc2 { [%eval 0.62] [%clk 0:00:43] } 42. h5 { [%eval 0.57] [%clk 0:46:54] } 42... gxh5 { [%eval 0.53] [%clk 0:01:05] } 43. gxh5 { [%eval 0.55] [%clk 0:47:22] } 43... Rc5 { [%eval 0.67] [%clk 0:00:53] } 44. Be2 { [%eval 0.43] [%clk 0:47:34] } 44... Kf6 { [%eval 0.51] [%clk 0:00:52] } 45. f4 { [%eval 0.12] [%clk 0:46:50] } 45... Kg7 { [%eval 0.1] [%clk 0:00:48] } 46. Kf2 { [%eval 0.07] [%clk 0:47:08] } 46... Rc2 { [%eval 0.07] [%clk 0:00:38] } 47. Kf3 { [%eval 0.1] [%clk 0:47:34] } 47... Ra2 { [%eval 0.15] [%clk 0:00:52] } 48. Rb7 { [%eval 0.26] [%clk 0:46:07] } 48... Ra1?? { [%eval 4.27] } { Blunder. Ra3 was best. } { [%clk 0:00:48] } 49. Bd3 { [%eval 4.07] [%clk 0:46:26] } 49... Kh6?? { [%eval #7] } { Checkmate is now unavoidable. Kf8 was best. } { [%clk 0:00:36] } 50. Rxf7 { [%eval #6] [%clk 0:46:49] } 50... Kxh5 { [%eval #1] [%clk 0:00:40] } 51. Rh7# { [%clk 0:47:18] } 1-0