Event: Round 4: Mark Biernacki - Donald Johnson
Date: 2021-07-18
White: Mark Biernacki
Black: Donald Johnson
Result: 0-1
ECO: A37
Opening: English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3
Variant: Standard

1. c4 { [%eval 0.2] [%clk 1:09:17] } 1... g6 { [%eval 0.44] [%clk 1:30:50] } 2. Nc3 { [%eval 0.13] [%clk 1:09:41] } 2... c5 { [%eval 0.12] [%clk 1:31:13] } 3. Nf3 { [%eval 0.0] [%clk 1:10:08] } 3... Bg7 { [%eval 0.01] [%clk 1:31:11] } 4. g3 { [%eval -0.06] [%clk 1:10:33] } 4... Nc6 { [%eval 0.15] [%clk 1:31:31] } 5. Bg2 { [%eval 0.09] [%clk 1:11:00] } 5... e5 { [%eval 0.26] [%clk 1:31:30] } 6. O-O { [%eval 0.14] [%clk 1:09:47] } 6... d6 { [%eval 0.35] [%clk 1:31:56] } 7. a3 { [%eval 0.13] [%clk 1:10:13] } 7... a5 { [%eval 0.48] [%clk 1:32:19] } 8. Ne1 { [%eval 0.39] [%clk 1:10:24] } 8... Be6 { [%eval 0.4] [%clk 1:32:47] } 9. d3 { [%eval 0.45] [%clk 1:08:58] } 9... Nge7 { [%eval 0.36] [%clk 1:32:37] } 10. Nc2 { [%eval 0.41] [%clk 1:07:10] } 10... d5 { [%eval 0.38] [%clk 1:33:06] } 11. cxd5 { [%eval 0.52] [%clk 1:07:21] } 11... Nxd5 { [%eval 0.41] [%clk 1:33:33] } 12. Ne4?! { [%eval -0.43] } { Inaccuracy. Ne3 was best. } { [%clk 1:07:08] } 12... b6 { [%eval -0.61] [%clk 1:30:55] } 13. Ng5 { [%eval -0.24] [%clk 1:06:38] } 13... Bc8 { [%eval -0.92] [%clk 1:29:25] } 14. Ne3 { [%eval -0.86] [%clk 1:05:33] } 14... Nde7 { [%eval -0.88] [%clk 1:24:09] } 15. Qa4 { [%eval -1.33] [%clk 0:48:51] } 15... Bd7 { [%eval -1.26] [%clk 1:21:56] } 16. Nd5?! { [%eval -1.87] } { Inaccuracy. Nc4 was best. } { [%clk 0:49:16] } 16... Nd4?! { [%eval -1.13] } { Inaccuracy. h6 was best. } { [%clk 1:15:14] } 17. Qc4?! { [%eval -2.2] } { Inaccuracy. Qd1 was best. } { [%clk 0:46:40] } 17... Nxe2+?? { [%eval 1.61] } { Blunder. O-O was best. } { [%clk 1:12:12] } 18. Kh1 { [%eval 1.34] [%clk 0:47:08] } 18... O-O { [%eval 1.48] [%clk 1:12:37] } 19. Qh4?? { [%eval -2.38] } { Blunder. Nxf7 was best. } { [%clk 0:13:27] } 19... h6 { [%eval -2.58] [%clk 1:09:42] } 20. Nxf7? { [%eval -4.61] } { Mistake. Nxe7+ was best. } { [%clk 0:05:13] } 20... Rxf7 { [%eval -5.63] [%clk 1:09:32] } 21. Bxh6 { [%eval -6.33] [%clk 0:03:21] } 21... Nf5 { [%eval -5.04] [%clk 1:08:19] } 22. Qxd8+ { [%eval -5.1] [%clk 0:02:20] } 22... Rxd8 { [%eval -5.1] [%clk 1:08:49] } 23. Bg5 { [%eval -5.15] [%clk 0:02:40] } 23... Rb8 { [%eval -5.15] [%clk 1:08:12] } 24. g4 { [%eval -6.35] [%clk 0:03:08] } 24... Nd6 { [%eval -5.26] [%clk 1:06:08] } 25. Ne7+ { [%eval -6.39] [%clk 0:03:08] } 25... Kh7 { [%eval -6.44] [%clk 1:06:06] } 26. Bd5 { [%eval -7.23] [%clk 0:02:33] } 26... Rff8 { [%eval -6.56] [%clk 1:06:20] } 27. h4 { [%eval -7.69] [%clk 0:02:50] } 27... Bxg4 { [%eval -7.48] [%clk 1:06:28] } 28. Nc6 { [%eval -8.16] [%clk 0:03:16] } 28... Rbc8 { [%eval -7.37] [%clk 1:05:27] } 29. f3 { [%eval -7.25] [%clk 0:03:45] } 29... Bd7 { [%eval -7.38] [%clk 1:05:02] } 30. Na7 { [%eval -9.52] [%clk 0:04:08] } 30... Ng3+ { [%eval -7.08] [%clk 1:04:46] } 31. Kg2 { [%eval -6.66] [%clk 0:04:37] } 31... Nxf1 { [%eval -6.33] [%clk 1:05:15] } 32. Nxc8 { [%eval -6.25] [%clk 0:04:53] } 32... Rxc8 { [%eval -6.49] [%clk 1:05:28] } 33. Rxf1 { [%eval -6.3] [%clk 0:05:02] } 33... Nf5 { [%eval -6.61] [%clk 1:05:38] } 34. h5 { [%eval -7.76] [%clk 0:05:19] } 34... gxh5 { [%eval -7.68] [%clk 1:05:32] } 35. Bf7 { [%eval -7.85] [%clk 0:05:02] } 35... Bh6 { [%eval -8.0] [%clk 1:05:38] } 36. Bxh6 { [%eval -8.07] [%clk 0:05:07] } 36... Kxh6 { [%eval -8.2] [%clk 1:06:07] } 0-1