What's up with this endgame?

[zullil]

I just lost my first ICCF game since 2015, and I still don't know what happened.

[d]8/K1k5/1p3p2/3p1pp1/3P1P2/PB1bP1P1/8/8 b - - 4 53
As others have pointed out, 53...gxf4 is a losing move:
+148.42 54. exf4 Be4 55. Ba4 Bd3 56. Be8 Be4 57. a4 Bg2 58. a5 bxa5 59. Ka6 a4 60. Bxa4 Bf1+ 61. Ka5 Bd3 62. Be8 Bf1 63. Bg6 Bh3 64. Kb5 Kd6 65. Kb6 Bg4 66. Be8 Bd1 67. Kb7 Bb3 68. Bb5 Bd1 69. Bd3 Bg4 70. Kc8 Ke6 71. Kd8 Bd1 72. Ba6 Kd6 73. Bc8 Bc2 74. Ke8 Bd3 75. Kf8 Kc7 76. Be6 Kd6 77. Bg8 Bc2 78. Kf7 Bd1 79. Bh7 Kc7 80. Bxf5 Ba4 81. Kxf6 Bb3 82. g4 (depth 56, 0:00:19)

Cfish-dev with null-move reduction disabled prefers 53...Be4, which, so far, it doesn't see as losing.

[Uri Blass]

I think that a good test position is the position after gxf4

stockfish developement version even in a bad day without disabling null move pruning can find exf4 at depth 89

stockfish9 also can see exf4 with enough time on my slow computer.
[d]8/K1k5/1p3p2/3p1p2/3P1p2/PB1bP1P1/8/8 w - - 0 54

Stockfish_19071415_x64_modern:

57/129 00:20 86,721k 4,315k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be8 Be4 63.a4 Bc2 64.Ka6 Bd3+ 65.Bb5 Bc2 66.a5 bxa5 67.Kxa5 Be4 68.Ba4 Kd6 69.Bd1 Bd3 70.Kb6 Bf5 71.Be2 Bd7 72.Bd3 Bg4 73.Bg6 Bd7 74.Ka5 Bg4 75.Kb5 Be2+ 76.Kb6 Bg4 77.Bd3 Bd7 78.Ka5 Bg4 79.Bb5 Bf5 80.Kb4 Be4 81.Kc3 Kc7 82.Bd3 Bxd3 83.Kxd3 f5 84.Kc3 Kc6 85.Kb4 Kb6
58/69 00:20 89,014k 4,322k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be8 Be4 63.a4 Bc2 64.Ka6 Bd3+ 65.Bb5 Bc2 66.a5 bxa5 67.Kxa5 Be4 68.Ba4 Kd6 69.Bd1 Bd3 70.Kb6 Bf5 71.Bb3 Be4 72.Kb7 Bf5 73.Ba4 Bh3 74.Kb6 Bf5 75.Bb5 Bh3 76.Ka6 Bf5 77.Ka5 Be4 78.Kb6 Bf3 79.Be8 Be4 80.Kb5 Bf3 81.Kb4 Bg4 82.Kc3 Bf5 83.Ba4 Kc7 84.Bc2 Bxc2 85.Kxc2 f5 86.Kc3 Kc6 87.Kd3 Kb5
59/98 00:20 90,514k 4,328k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be8 Be4 63.a4 Bc2 64.Ka6 Bd3+ 65.Bb5 Bc2 66.a5 bxa5 67.Kxa5 Be4 68.Ba4 Kd6 69.Bd1 Bd3 70.Kb6 Bf5 71.Bb3 Be4 72.Kb7 Bf5 73.Ba4 Bh3 74.Kb6 Bf5 75.Bb5 Bh3 76.Bd3 Bg4 77.Bc2 Bd7 78.Kb7 Bh3 79.Ba4 Bf5 80.Bb3 Bd7 81.Ka6 Be8 82.Ka5 Bd7 83.Kb4 Bf5 84.Bd1 Be4 85.Kb5 Bf5 86.Be2 Bd7+ 87.Kb4 Bc6 88.Bd3 Be8 89.Kc3 Bh5 90.Bc2 Bg4 91.Ba4 Be2 92.Bb3 Bf3 93.Kb4 Be4 94.Bd1 Bd3 95.Kc3 Be4 96.Ba4 Kc7 97.Bc2 Bxc2 98.Kxc2 f5
60/146 00:23 100,557k 4,335k +1.30 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be8 Be4 63.a4 Bc2 64.Ka6 Bd3+ 65.Bb5 Bc2 66.a5 bxa5 67.Kxa5 Be4 68.Ba4 Kd6 69.Bd1 Bd3 70.Kb6 Bf5 71.Bb3 Be4 72.Kb7 Bf5 73.Ba4 Bh3 74.Kb6 Bf5 75.Bb5 Bh3 76.Bd3 Bg4 77.Bc2 Bd7 78.Kb7 Bh3 79.Ba4 Bf5 80.Be8 Bg4 81.Kb6 Bf3 82.Ka5 Bd1 83.Bg6 Kc6 84.Kb4 Bf3 85.Ka3 Kb5 86.Bd3+ Kb6 87.Kb4 Bg4 88.e4 dxe4 89.Bxe4
61/128 00:28 125,178k 4,366k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be8 Be4 63.a4 Bc2 64.Ka6 Bd3+ 65.Bb5 Bc2 66.a5 bxa5 67.Kxa5 Be4 68.Ba4 Kd6 69.Bd1 Bd3 70.Kb6 Bf5 71.Bb3 Be4 72.Kb7 Bf5 73.Ba4 Bh3 74.Kb6 Bf5 75.Bb5 Be4 76.Be2 Bf5 77.Kb7 Bd7 78.Bd3 Bh3 79.Kb6 Bg4 80.Kb5 Bd7+ 81.Kb4 Bg4 82.Kc3 Bd1 83.Bg6 Be2 84.Bf5 Kc6 85.Bd3 Bxd3 86.Kxd3 f5
62/125 00:30 134,463k 4,382k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be8 Be4 63.a4 Bc2 64.Ka6 Bd3+ 65.Bb5 Bc2 66.a5 bxa5 67.Kxa5 Be4 68.Kb4 Kd6 69.Be2 Bc2 70.Bh5 Bd3 71.Bd1 Be4 72.Bb3 Bf3 73.Kb5 Be2+ 74.Kb6 Bd3 75.Ba4 Be4 76.Kb7 Bf5 77.Be8 Bg4 78.Bg6 Bd7 79.Kb6 Bh3 80.Ka5 Bf1 81.Bf5 Kc6 82.Bb1 Bg2 83.Kb4 Bf3 84.Bg6 Be2 85.Kc3 Bf3 86.Bd3 Bd1 87.e4 dxe4 88.Bxe4+ Kd6
63/138 00:32 140,827k 4,387k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be8 Be4 63.a4 Bc2 64.Bf7 Be4 65.Be6 Bf3 66.Bg8 Be4 67.Bf7 Bf3 68.Be8 Be4 69.Bb5 Bf5 70.a5 bxa5 71.Ka6 Be4 72.Kxa5 Bc2 73.Kb4 Kd6 74.Ba4 Bf5 75.Bd1 Bd3 76.Kc3 Bf5 77.Bc2 Bg4 78.Bb3 Be2 79.Kb4 Bf3 80.Ba4 Be4 81.Kc3 Kc7 82.Bb5 Kb6 83.Kb4 Bf3 84.Be8 Bd1 85.Bg6 Kc6 86.Kc3 Bf3 87.Bd3 Bd1 88.e4 dxe4 89.Bxe4+ Kc7
64/124 00:33 147,592k 4,394k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be8 Be4 63.a4 Bc2 64.Bf7 Be4 65.Be6 Bf3 66.Bg8 Be4 67.Bf7 Bf3 68.Be8 Be4 69.Bb5 Bf5 70.a5 bxa5 71.Ka6 Be4 72.Kxa5 Bc2 73.Kb4 Kd6 74.Ba4 Bf5 75.Bd1 Bd3 76.Kc3 Bf5 77.Bc2 Bg4 78.Bb3 Be2 79.Kb4 Bf3 80.Ka5 Be4 81.Ka6 Bd3+ 82.Kb6 Bf5 83.Ba4 Be4 84.Ka6 Bb1 85.Bd1 Bd3+ 86.Kb7 Bf5 87.Bf3 Be6 88.Kb6 Bd7 89.Be2 Bf5 90.Ka5 Bc2 91.Bh5 Kc6 92.Be8+ Kc7 93.Kb4 Kd6 94.Bh5 Bd3 95.Bd1 Be4 96.Be2 Bc2 97.Bg4 Bd3 98.Kc3 Be4 99.Bh5 Kc7 100.Bd1 Kb6 101.Bg4 Kc6 102.Be2 Kb6 103.Kb4 Bc2 104.Bb5 Be4 105.Bd7 Bc2 106.Be8 Bd3 107.Ba4 Be4 108.Bb5 Bf3 109.Be8 Bd1 110.Bg6 Kc6 111.Kc3 Bf3 112.Bd3 Bd1 113.e4 dxe4 114.Bxe4+ Kc7
65/94 00:48 213,655k 4,431k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be8 Be4 63.a4 Bc2 64.Bf7 Be4 65.Be6 Bf3 66.Bg8 Be4 67.Bf7 Bf3 68.Be8 Be4 69.Bb5 Bf5 70.a5 bxa5 71.Ka6 Be4 72.Kxa5 Bc2 73.Kb4 Kd6 74.Ba4 Bf5 75.Bd1 Bd3 76.Kc3 Bf5 77.Bc2 Bg4 78.Bb3 Be2 79.Kb4 Bf3 80.Kb5 Be2+ 81.Ka5 Bf1 82.Bc2 Be2 83.Bb1 Bg4 84.Bd3 Kc6 85.Ka4 Bd1+ 86.Kb4 Bf3 87.Kc3 Bd1 88.e4 dxe4 89.Bxe4+ Kc7
66/71 00:50 223,839k 4,428k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be8 Be4 63.a4 Bc2 64.Bf7 Be4 65.Be6 Bf3 66.Bg8 Be4 67.Bf7 Bf3 68.Be8 Be4 69.Bb5 Bf5 70.a5 bxa5 71.Ka6 Be4 72.Kxa5 Kd6 73.Kb6 Bg6 74.Ba4 Bf5 75.Be8 Bd3 76.Bh5 Bf5 77.Kb7 Bh3 78.Bg6 Bd7 79.Kb6 Bg4 80.Bc2 Bc8 81.Bd1 Be6 82.Ka6 Bf5 83.Kb5 Bd3+ 84.Kb4 Kc6 85.Kc3 Bf5 86.Bb3 Be4 87.Bc2 Bxc2 88.Kxc2 f5 89.Kd3
67/72 00:53 236,808k 4,430k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be8 Be4 63.a4 Bc2 64.Bf7 Be4 65.Be6 Bf3 66.Bg8 Be4 67.Bf7 Bf3 68.Be8 Be4 69.Bb5 Bf5 70.a5 bxa5 71.Ka6 Be4 72.Kxa5 Kd6 73.Kb6 Bg6 74.Ba4 Bf5 75.Be8 Bd3 76.Bh5 Bf5 77.Kb7 Bh3 78.Bg6 Bd7 79.Kb6 Bg4 80.Bc2 Bc8 81.Bd1 Be6 82.Ka6 Bf5 83.Kb5 Bd3+ 84.Kb4 Kc6 85.Kc3 Bf5 86.Bb3 Be4 87.Bc2 Bxc2 88.Kxc2 f5 89.Kd3 Kc7
68/137 00:56 250,970k 4,422k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be8 Be4 63.a4 Bc2 64.Bf7 Be4 65.Be6 Bf3 66.Bg8 Be4 67.Bf7 Bf3 68.Be8 Be4 69.Bb5 Bf5 70.a5 bxa5 71.Ka6 Be4 72.Kxa5 Kd6 73.Kb6 Bg6 74.Ba4 Bf5 75.Be8 Bd3 76.Bh5 Bf5 77.Kb7 Bh3 78.Bg6 Bd7 79.Kb6 Bg4 80.Bc2 Bc8 81.Bd1 Be6 82.Ka6 Bf5 83.Kb5 Bd3+ 84.Kb4 Kc6 85.Kc3 Bf5 86.Bb3 Be4 87.Kb4 Bf5 88.Ba4+ Kd6 89.Bb5 Bc2 90.Kc3 Be4 91.Bd3 Bxd3 92.Kxd3 f5
69/142 01:16 336,886k 4,419k +1.30 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.a4 Be4 63.Be6 Bf3 64.Bg8 Be4 65.Bf7 Bf3 66.Be8 Be4 67.a5 bxa5 68.Ka6 Bf3 69.Ba4 Be4 70.Bb5 Bf3 71.Kxa5 Bd1 72.Ka6 Bg4 73.Bd3 Bd7 74.Ka5 Be8 75.Bc2 Bd7 76.Kb4 Kd6 77.Bg6 Kc6 78.Bh5 Kd6 79.Be2 Be6 80.Bd3 Bd7 81.Ka5 Kc7 82.Ka6 Bc6 83.Ka7 Bb7 84.Bf5 Bc6 85.Be6 Bb7 86.Bg4 Bc6 87.Bf5 Bb5 88.Be6 Bd3 89.Bxd5 Kd6 90.Bf3
70/139 01:39 434,178k 4,384k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be8 Be4 63.a4 Bc2 64.Bf7 Be4 65.Be6 Bf3 66.Bg8 Be4 67.Bf7 Bf3 68.Be8 Be2 69.Bb5 Bg4 70.a5 bxa5 71.Ka6 Bc8+ 72.Kxa5 Bf5 73.Ba4 Bd3 74.Be8 Be2 75.Kb4 Kd6 76.Bb5 Bg4 77.Bd3 Bh3 78.Ka5 Kc6 79.Ba6 Bf5 80.Kb4 Kb6 81.Be2 Be4 82.Bf1 Bf5 83.Bg2 Kc6 84.Bf3 Bd7 85.Bh5 Bf5 86.Be2 Bc2 87.Ka5 Bf5 88.Bf3 Bd3 89.Bh5 Kb7 90.Kb4 Kb6 91.Bf3 Kc6 92.Kc3 Bb1 93.Be2 Kb6 94.Bd3 Bxd3 95.Kxd3 f5
71/144 01:45 463,070k 4,394k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be6 Be4 63.Bg4 Bd3 64.Bh5 Bf1 65.Bf7 Bg2 66.a4 Be4 67.Be6 Bf3 68.Bg8 Be4 69.Bf7 Bf3 70.Be8 Be2 71.Bb5 Bg4 72.a5 bxa5 73.Ka6 Bc8+ 74.Kxa5 Bf5 75.Be8 Bd3 76.Bf7 Kc6 77.Kb4 Kd6 78.Bh5 Kc6 79.Bf3 Bb1 80.Kc3 Bf5 81.Bd1 Be4 82.Ba4+ Kb6 83.Bb3 Kb5 84.Ba2 Kc6 85.Kb3 Bd3 86.Kb4 Be4 87.Kc3 Kd6 88.Bb3 Kc7 89.Bc2 Bxc2 90.Kxc2 f5 91.Kb3 Kb7 92.Ka4 Ka6 93.Kb4
72/136 01:48 475,616k 4,396k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be6 Be4 63.Bg4 Bd3 64.Bh5 Bf1 65.Bf7 Bg2 66.a4 Be4 67.Be8 Bc2 68.Bb5 Bb3 69.Ka6 Bc2 70.a5 bxa5 71.Kxa5 Bf5 72.Be8 Bd3 73.Bf7 Kc6 74.Kb4 Kd6 75.Bh5 Kc6 76.Be8+ Kb6 77.Bf7 Kc6 78.Be6 Kd6 79.Kc3 Be4 80.Bg4 Kc6 81.Be2 Kc7 82.Kb4 Kb6 83.Bd1 Kc6 84.Ka5 Bd3 85.Ba4+ Kc7 86.Be8 Be2 87.Bb5 Bg4 88.Kb4 Kb6 89.Be8 Bd1 90.Kc3 Be2 91.Bg6 Kc7 92.Bd3 Bxd3 93.Kxd3 f5
73/136 01:54 503,322k 4,400k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be6 Be4 63.Bg4 Bd3 64.Bh5 Bf1 65.Bf7 Bg2 66.a4 Be4 67.Be8 Bc2 68.Bb5 Bb3 69.Ka6 Bc2 70.a5 bxa5 71.Kxa5 Bf5 72.Be8 Bd3 73.Bf7 Kc6 74.Kb4 Kd6 75.Bh5 Kc6 76.Be8+ Kb6 77.Bf7 Kc6 78.Be6 Kd6 79.Kc3 Be4 80.Bg4 Kc6 81.Be2 Kc7 82.Kb4 Kb6 83.Bd1 Kc6 84.Ka5 Bd3 85.Ba4+ Kc7 86.Kb4 Kd6 87.Bb5 Bf5 88.Be2 Kc6 89.Ka5 Bc2 90.Bb5+ Kc7 91.Kb4 Kb6 92.Kc3 Kxb5 93.Kxc2 f5 94.Kc3 Ka5
74/137 01:58 521,287k 4,402k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be6 Be4 63.Bg4 Bd3 64.Bh5 Bf1 65.Bf7 Bg2 66.a4 Be4 67.Be8 Bc2 68.Bb5 Bb3 69.Ka6 Bc2 70.a5 bxa5 71.Kxa5 Bf5 72.Be8 Bd3 73.Bf7 Kc6 74.Kb4 Kd6 75.Bh5 Kc6 76.Be8+ Kb6 77.Bf7 Kc6 78.Be6 Kd6 79.Kc3 Be4 80.Bg4 Kc6 81.Kb4 Bd3 82.Ka5 Kb7 83.Bf3 Kc6 84.Bd1 Kc7 85.Bb3 Kc6 86.Ba4+ Kc7 87.Be8 Be2 88.Kb4 Kd6 89.Ka3 Bf3 90.Kb3 Be2 91.Ba4 Bd3 92.Kb2 Bf1 93.Bd1 Bb5 94.Kc3 Kc6 95.Bh5 Kd6 96.Bg4 Bc6 97.Be2 Be8 98.Bd3 Kc6 99.Kb4 Kb6 100.Bf5 Bc6 101.Be6 Bb7 102.Bf7 Bc6 103.Bh5 Bd7 104.Bg6 Bh3 105.Kc3 Kc6 106.Be8+ Kc7 107.Kb4 Kb6 108.Bg6 Bg4 109.e4 dxe4 110.Bxe4
75/137 02:27 649,793k 4,410k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be6 Be4 63.Bg4 Bd3 64.Bh5 Bf1 65.Bf7 Bg2 66.a4 Be4 67.Be8 Bc2 68.Bb5 Bb3 69.Ka6 Bc2 70.a5 bxa5 71.Kxa5 Bf5 72.Be8 Bd3 73.Bf7 Kc6 74.Kb4 Kd6 75.Bh5 Kc6 76.Be8+ Kb6 77.Bf7 Kc6 78.Be6 Kd6 79.Kc3 Be4 80.Bg4 Kc6 81.Kb4 Bd3 82.Ka5 Kb7 83.Bf3 Kc6 84.Bd1 Kc7 85.Kb4 Kd6 86.Kc3 Be4 87.Bb3 Kc7 88.Kb4 Kc6 89.Ba4+ Kb6 90.Bd1 Kc6 91.Bb3 Bf5 92.Kc3 Be4 93.Bc2 Bxc2 94.Kxc2 f5 95.Kc3 Kb5 96.Kb3 Ka5
76/137 02:29 660,142k 4,412k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be6 Be4 63.Bg4 Bd3 64.Bh5 Bf1 65.Bf7 Bg2 66.a4 Be4 67.Be8 Bc2 68.Bb5 Bb3 69.Ka6 Bc2 70.a5 bxa5 71.Kxa5 Bf5 72.Be8 Bd3 73.Ba4 Be2 74.Bb5 Bf3 75.Kb4 Kd6 76.Bd3 Kc6 77.Ka5 Bh5 78.Bb5+ Kc7 79.Kb4 Kb6 80.Bd7 Bf3 81.Ba4 Be4 82.Bb3 Kc6 83.Kc3 Kb5 84.Ba2 Kc6 85.Kb3 Bd3 86.Ka4 Be2 87.Bb1 Bg4 88.Bg6 Bf3 89.Ka5 Be2 90.Bf5 Bf1 91.Ka4 Bb5+ 92.Kb4 Be2 93.Kc3 Kc7 94.Bd3 Bxd3 95.Kxd3 f5
77/138 02:45 731,983k 4,418k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be6 Be4 63.Bg4 Bd3 64.Bh5 Bf1 65.Bf7 Bg2 66.a4 Be4 67.Be8 Bc2 68.Bb5 Bb3 69.Ka6 Bc2 70.a5 bxa5 71.Kxa5 Bf5 72.Be8 Bd3 73.Ba4 Be2 74.Bb5 Bf3 75.Kb4 Kd6 76.Bd3 Kc6 77.Ka5 Bh5 78.Bb5+ Kc7 79.Kb4 Kb6 80.Bd7 Bf3 81.Ba4 Be4 82.Bb3 Kc6 83.Kc3 Kb5 84.Ba2 Kc6 85.Kb3 Bd3 86.Ka4 Be2 87.Bb1 Bg4 88.Bd3 Bf3 89.Kb4 Bg4 90.Bg6 Be2 91.Bf7 Bd3 92.Ka5 Bf5 93.Be8+ Kd6 94.Ba4 Be6 95.Bb3 Bd7 96.Bc2 Bh3 97.Bg6 Kc6 98.Be8+ Kd6 99.Bb5 Kc7 100.Kb4 Kb6 101.Bd3 Bc8 102.Bg6 Bg4 103.e4 dxe4 104.Bxe4
78/136 02:50 755,273k 4,417k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be6 Be4 63.Bg4 Bd3 64.Bh5 Bf1 65.Bf7 Bg2 66.a4 Be4 67.Be8 Bc2 68.Bb5 Bb3 69.Ka6 Bc2 70.a5 bxa5 71.Kxa5 Bf5 72.Be8 Bd3 73.Ba4 Be2 74.Bb5 Bf3 75.Kb4 Kd6 76.Bd3 Kc6 77.Ka5 Bh5 78.Bb5+ Kc7 79.Kb4 Kb6 80.Bd7 Bf3 81.Ba4 Be4 82.Bb3 Kc6 83.Kc3 Kb5 84.Ba2 Kc6 85.Kb3 Bd3 86.Ka4 Be2 87.Bb1 Bg4 88.Bd3 Bf3 89.Kb4 Bg4 90.Bb5+ Kd6 91.Be8 Be2 92.Ka5 Kc7 93.Ba4 Bd3 94.Kb4 Kb6 95.Kc3 Be4 96.Bc2 Bxc2 97.Kxc2 f5
79/115 02:58 789,234k 4,420k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be6 Be4 63.Bg4 Bd3 64.Bh5 Bf1 65.Bf7 Bg2 66.a4 Be4 67.Be8 Bc2 68.Bb5 Bb3 69.Ka6 Bc2 70.a5 bxa5 71.Kxa5 Bf5 72.Be8 Bd3 73.Ba4 Be2 74.Bb5 Bf3 75.Kb4 Kd6 76.Bd3 Kc6 77.Ka5 Bh5 78.Bb5+ Kc7 79.Kb4 Kb6 80.Bd7 Bf3 81.Ba4 Be4 82.Bb3 Kc6 83.Kc3 Kb5 84.Ba2 Kc6 85.Kb3 Bd3 86.Kb2 Kd6 87.Kc3 Be2 88.Bb1 Kc7 89.Bf5 Bf3 90.Be6 Kb6 91.Bg8 Be4 92.Bf7 Bf3 93.Bg6 Kc6 94.Be8+ Kd6 95.Bf7 Be2 96.Bg6 Kc6 97.Bf5 Bd1 98.e4 dxe4 99.Bxe4+ Kd6
80/117 03:12 849,141k 4,406k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be6 Be4 63.Bg4 Bd3 64.Bh5 Bf1 65.Bf7 Bg2 66.a4 Be4 67.Be8 Bc2 68.Bb5 Bb3 69.Ka6 Bc2 70.a5 bxa5 71.Kxa5 Bf5 72.Be8 Bd3 73.Ba4 Be2 74.Kb4 Kd6 75.Be8 Bd3 76.Bh5 Kc6 77.Bf7 Kd6 78.Be8 Be2 79.Bg6 Kc6 80.Bf7 Bd3 81.Kc3 Be2 82.Be8+ Kd6 83.Bg6 Kc7 84.Bb1 Kd6 85.Kb4 Kc6 86.Bg6 Kb6 87.Be8 Bd3 88.Kc3 Be4 89.Ba4 Ka5 90.Bb3 Kb5 91.Bd1 Kb6 92.Be2 Kc6 93.Kb4 Bf5 94.Bb5+ Kd6 95.Kc3 Be4 96.Bd3 Bxd3 97.Kxd3 f5 98.Kc3 Kc6
81/143 03:27 913,848k 4,405k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be6 Be4 63.Bg4 Bd3 64.a4 Bc2 65.Be6 Be4 66.Bf7 Bf3 67.Bg8 Be4 68.Be6 Bf3 69.Bf7 Be4 70.Be8 Bc2 71.Bb5 Bb3 72.Ka6 Bc2 73.a5 bxa5 74.Kxa5 Bf5 75.Be8 Bd3 76.Ba4 Be2 77.Kb4 Kd6 78.Be8 Bd3 79.Bh5 Kc6 80.Bf7 Kd6 81.Be8 Be2 82.Bg6 Kc6 83.Bf7 Bd3 84.Kc3 Be2 85.Be8+ Kd6 86.Bg6 Kc6 87.Bb1 Bh5 88.Kb4 Be2 89.Ka5 Kc7 90.Bf5 Kc6 91.Bc2 Kc7 92.Ba4 Bd3 93.Kb4 Kb6 94.Kc3 Be4 95.Bd7 Bf3 96.Be8 Be4 97.Ba4 Ka5 98.Bc2 Bxc2 99.Kxc2 f5
82/108 03:48 1,010,250k 4,425k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be6 Be4 63.Bg4 Bd3 64.a4 Bc2 65.Be6 Be4 66.Bf7 Bf3 67.Be8 Be2 68.Bb5 Bg4 69.a5 bxa5 70.Ka6 Bc8+ 71.Kxa5 Bf5 72.Be8 Bd3 73.Ba4 Be2 74.Kb4 Kd6 75.Be8 Bd3 76.Bh5 Kc6 77.Bf7 Kd6 78.Be8 Be2 79.Bg6 Kc6 80.Bc2 Kd6 81.Ka5 Kc6 82.Bb3 Bd3 83.Ba4+ Kc7 84.Be8 Be2 85.Bf7 Kc6 86.Be6 Kd6 87.Bf5 Kc6 88.Bc2 Kc7 89.Ka4 Kc6 90.Bb3 Bd3 91.Bd1 Kb6 92.Kb4 Kc6 93.Kc3 Be4 94.Be2 Kb6 95.Bg4 Kc7 96.Kb4 Kc6 97.Be2 Bf5 98.Bb5+ Kd6 99.Kc3 Bg4 100.Bd3 Kc7 101.Bc2 Be2 102.Bb3 Kd6 103.Ba2 Kc6 104.Bb1 Bh5 105.Bd3 Bd1 106.e4 dxe4 107.Bxe4+ Kd6
83/127 04:03 1,081,863k 4,441k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be6 Be4 63.Bg4 Bd3 64.a4 Bc2 65.Be6 Be4 66.Bf7 Bf3 67.Be8 Be2 68.Bb5 Bg4 69.a5 bxa5 70.Ka6 Bc8+ 71.Kxa5 Bf5 72.Be8 Bd3 73.Ba4 Be2 74.Kb4 Kd6 75.Be8 Bd3 76.Bb5 Bf5 77.Ba4 Bd3 78.Bd1 Kc6 79.Kc3 Be4 80.Ba4+ Kb6 81.Be8 Ka5 82.Bd7 Kb6 83.Be6 Bf3 84.Kb3 Kc6 85.Kb4 Bd1 86.Bf7 Be2 87.Be8+ Kd6 88.Bg6 Kc6 89.Bf7 Bd3 90.Kc3 Be2 91.Be8+ Kd6 92.Bg6 Kc6 93.Bc2 Kd6 94.Bf5 Kc6 95.Kd2 Bf3 96.Bb1 Kd6 97.Kc3 Bd1 98.Bf5 Kc6 99.e4 dxe4 100.Bxe4+ Kd6
84/111 04:29 1,202,153k 4,453k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be6 Be4 63.Bg4 Bd3 64.a4 Bc2 65.Be6 Be4 66.Bf7 Bf3 67.Be8 Be2 68.Bb5 Bg4 69.a5 bxa5 70.Ka6 Bc8+ 71.Kxa5 Bf5 72.Be8 Bd3 73.Ba4 Be2 74.Kb4 Kd6 75.Be8 Bd3 76.Bb5 Bf5 77.Ba4 Bd3 78.Kc3 Be2 79.Bb3 Bg4 80.Bc2 Be2 81.Bb1 Kc7 82.Bh7 Kd6 83.Kb4 Kc6 84.Bb1 Bf3 85.Bc2 Be2 86.Ka5 Kc7 87.Ba4 Bd3 88.Bb3 Kc6 89.Kb4 Be2 90.Kc3 Kd6 91.Kd2 Bf3 92.Bc2 Kc7 93.Kc3 Kd6 94.Kb4 Be2 95.Bg6 Kc6 96.Kc3 Bg4 97.Be8+ Kd6 98.Bf7 Bf5 99.Bh5 Be4 100.Bd1 Kc6 101.Ba4+ Kb6 102.Bb3 Kc6 103.Kb4 Kb6 104.Bd1 Kc6 105.Ba4+ Kb6 106.Kc3 Ka5 107.Bc2 Bxc2 108.Kxc2 f5
85/130 06:08 1,636,933k 4,439k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be8 Be4 63.a4 Bc2 64.Bb5 Bb3 65.Ka6 Bc2 66.a5 bxa5 67.Kxa5 Bf5 68.Be8 Bd3 69.Ba4 Be2 70.Kb4 Kd6 71.Be8 Bd3 72.Bb5 Bf5 73.Ba6 Kc6 74.Be2 Be4 75.Bd1 Bd3 76.Ba4+ Kd6 77.Be8 Be2 78.Bf7 Kc6 79.Be6 Kd6 80.Bf5 Kc6 81.Bc2 Kd6 82.Bh7 Kc6 83.Bf5 Kd6 84.Kc3 Kc6 85.Bg6 Bf3 86.Bf7 Be2 87.Be8+ Kd6 88.Bg6 Kc6 89.Kb3 Bf1 90.Bc2 Be2 91.Bb1 Bg4 92.Bd3 Kd6 93.Kc3 Kc7 94.Kb4 Kc6 95.Ka5 Bf3 96.Bb5+ Kc7 97.Bf1 Kc6 98.Ka6 Bd1 99.Bd3 Bg4 100.Bb5+ Kc7 101.Bf1 Kc6 102.Ka7 Kc7 103.Bg2 Kc6 104.Kb8 Kd6 105.Kb7 Bd7 106.Ka7 Be8 107.Kb6 Ba4 108.Bf3 Bb3 109.Bh5 Bc4 110.Bg4 Bd3 111.Bf3 Bf5 112.Kb7 Bd7 113.Bh5 Bf5 114.Bf7 Bd3 115.Kc8 Bb5 116.Kd8 f5 117.Bg6 Bd3 118.Be8
86/128 06:37 1,760,077k 4,430k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be8 Be4 63.a4 Bc2 64.Bb5 Bb3 65.Ka6 Bc2 66.a5 bxa5 67.Kxa5 Bf5 68.Be8 Bd3 69.Ba4 Be2 70.Kb4 Kd6 71.Be8 Bd3 72.Bf7 Kc6 73.Kc3 Be2 74.Bg6 Bf3 75.Bc2 Be2 76.Bb3 Kd6 77.Ba2 Kc6 78.Kb4 Bd3 79.Bb3 Be2 80.Ka4 Bd3 81.Ka5 Be2 82.Kb4 Kd6 83.Ba4 Bd3 84.Be8 Be2 85.Kc3 Bf3 86.Bf7 Kc6 87.Bg6 Bg4 88.Be8+ Kd6 89.Bb5 Bf3 90.Bd3 Bg4 91.Bb1 Be2 92.Kb4 Kc6 93.Kb3 Bg4 94.Bc2 Be2 95.Bg6 Bf3 96.Bd3 Kc7 97.Kb2 Kb6 98.Ka3 Bg4 99.Kb4 Kc6 100.Ka5 Bf3 101.Bb5+ Kc7 102.Ka4 Kb6 103.Kb4 Bg4 104.Be8 Bf5 105.Kc3 Be4 106.Ba4 Bf3 107.Bb3 Be4 108.Kb4 Kc6 109.Ba4+ Kb6 110.Bd1 Bd3 111.Kc3 Be4 112.Bg4 Kc6 113.Be2 Kb6 114.Bd3 Bxd3 115.Kxd3 f5
87/128 07:38 2,041,294k 4,452k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be8 Be4 63.a4 Bc2 64.Bb5 Bb3 65.Ka6 Bc2 66.a5 bxa5 67.Kxa5 Bf5 68.Be8 Bd3 69.Ba4 Be2 70.Kb4 Kd6 71.Be8 Bd3 72.Bf7 Kc6 73.Kc3 Be2 74.Bg6 Bf3 75.Bc2 Be2 76.Bb3 Kd6 77.Ba2 Kc6 78.Kb4 Bd3 79.Bb3 Be2 80.Ka4 Bd3 81.Ka5 Be2 82.Kb4 Kd6 83.Ba4 Bd3 84.Bd1 Kc6 85.Ka5 Kc7 86.Bb3 Kc6 87.Ba4+ Kc7 88.Be8 Be2 89.Kb4 Kd6 90.Bf7 Kc6 91.Kc3 Bf3 92.Bg6 Be2 93.Bc2 Bf3 94.Ba4+ Kd6 95.Bb5 Be4 96.Ba6 Bf5 97.Be2 Kc6 98.Bd1 Be4 99.Ba4+ Kb6 100.Bc2 Bxc2 101.Kxc2 f5
88/105 08:03 2,145,467k 4,441k +1.29 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Bc2 Bg2 59.Bxf5 Bf1 60.Bg6 Be2 61.Bf7 Bf3 62.Be8 Be4 63.a4 Bc2 64.Bb5 Bb3 65.Ka6 Bc2 66.a5 bxa5 67.Kxa5 Bf5 68.Be8 Bd3 69.Ba4 Be2 70.Kb4 Kd6 71.Be8 Bd3 72.Bf7 Kc6 73.Kc3 Be2 74.Bg6 Bf3 75.Bc2 Be2 76.Bb3 Kd6 77.Ba2 Kc6 78.Kb4 Bd3 79.Bb3 Be2 80.Ka4 Bd3 81.Ka5 Be2 82.Kb4 Kd6 83.Ba4 Bd3 84.Be8 Be2 85.Bf7 Kc6 86.Bg6 Kb6 87.Kc3 Kc6 88.Bc2 Bf3 89.Ba4+ Kd6 90.Kb3 Bg4 91.Bb5 Bf5 92.Kb4 Bg4 93.Ka5 Kc7 94.Bd3 Kc6 95.Kb4 Bf3 96.Bb1 Be2 97.Bf5 Kd6 98.Bh3 Bd3 99.Bg4 Kc6 100.Kc3 Be4 101.Be2 Bf5 102.Bd1 Be4 103.Ba4+ Kb6 104.Bc2 Bxc2 105.Kxc2 f5
89/140+ 15:03 3,621,800k 4,007k +1.38 54.exf4
89/140+ 20:22 4,910,632k 4,016k +1.48 54.exf4


FEN: 8/K1k5/1p3p2/3p1p2/3P1p2/PB1bP1P1/8/8 w - - 0 54

Stockfish_9_x64:

56/69 00:33 168,248k 5,042k +0.98 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Ka6 Kc6 59.a4 Bg4 60.a5 bxa5 61.Kxa5 Bh3 62.Bb5+ Kc7 63.Be2 Kc6 64.Ka6 Bg4 65.Bd3 Bh3 66.Bb5+ Kc7 67.Ka5 Kb7 68.Ba4 Kc7 69.Kb5 Kd6 70.Kb6 Bg4 71.Bc2 Bf3 72.Bxf5 Be2 73.Bh3 Bd3 74.Bg4 Be4 75.Be2 Bf5 76.Kb7 Be4 77.Ka6 Kc7 78.Kb5 Kd6 79.Bh5 Bf5 80.Kb6 Be4 81.Kb7 Bf5 82.Be8 Be4 83.Ka6 Bc2 84.Kb6
57/62 00:38 193,443k 4,982k +0.98 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Bg4 57.Bd3 Bh3 58.Ka6 Kc6 59.a4 Bg4 60.a5 bxa5 61.Kxa5 Bh3 62.Bb5+ Kc7 63.Be2 Kc6 64.Ka6 Bg4 65.Bd3 Bh3 66.Bb5+ Kc7 67.Ka5 Kb7 68.Ba4 Kc7 69.Kb5 Kd6 70.Kb6 Bg4 71.Bc2 Bf3 72.Bxf5 Be2 73.Bh3 Bd3 74.Bg4 Bc2 75.Ka6 Be4 76.Be2 Kc7 77.Kb5 Kd6 78.Bh5 Bf5 79.Kb6 Be4 80.Kb7 Bf5 81.Be8 Be4 82.Ka6 Bc2 83.Kb6 Bd3 84.Ba4 Bf5 85.Bc6
58/61 00:41 203,422k 4,957k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bg6 71.Kb7 Be4 72.Be2 Bc2 73.Bh5 Bf5 74.Bd1 Be4 75.Kc8 Kc6 76.Ba4+ Kd6 77.Kb7 Bg6 78.Kb6 Bd3 79.Be8 Be4 80.Ka6 Bf5 81.Bb5 Bc2 82.Kb7 Bf5 83.Kb6 Be4 84.Ka6
59/63 00:45 225,153k 4,978k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bg6 71.Kb7 Be4 72.Be2 Bc2 73.Bh5 Bf5 74.Bd1 Be4 75.Kc8 Bf5+ 76.Kd8 Bd7 77.Be2 Bc6 78.Kc8 Ba4 79.Bd3 Bc6 80.Kb8 Bd7 81.Kb7 Bh3 82.Kb6 Bd7 83.Ka5 Bh3 84.Bg6 Kc6 85.Kb4
60/63 00:47 235,104k 4,993k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bg6 71.Kb7 Bf5 72.Ka6 Bc2 73.Be2 Kc6 74.Ka5 Be4 75.Bb5+ Kd6 76.Be8 Bf5 77.Kb4 Bd3 78.Bb5 Be4 79.Be2 Kc6 80.Ka5 Bc2 81.Bb5+ Kc7 82.Be8 Kd6 83.Kb6 Bf5 84.Bb5 Bg6 85.Be2
61/65 00:49 246,482k 5,014k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bg6 71.Kb7 Bf5 72.Ka6 Bc2 73.Be2 Kc6 74.Ka5 Be4 75.Bb5+ Kd6 76.Be8 Bf5 77.Kb4 Bd3 78.Bh5 Bf5 79.Bf7 Be4 80.Kb5 Ke7 81.Bh5 Kd6 82.Be2 Bg6 83.Ka6 Kc6 84.Bb5+ Kc7 85.Ka5 Bf5 86.Ba4
62/64 00:54 273,439k 5,059k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bg6 71.Kb7 Bf5 72.Ka6 Bc2 73.Be2 Kc6 74.Ka5 Be4 75.Bb5+ Kd6 76.Be8 Bf5 77.Kb4 Bd3 78.Bf7 Be4 79.Bh5 Kc6 80.Ka5 Kd6 81.Kb6 Bd3 82.Bg4 Be4 83.Be2 Bc2 84.Kb5 Bf5 85.Kb6 Bg6
63/67 01:03 325,019k 5,105k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bc8 71.Be2 Bf5 72.Kb5 Bc2 73.Bf1 Bf5 74.Ka6 Bc2 75.Be2 Kc6 76.Ka5 Be4 77.Bb5+ Kd6 78.Be8 Bf5 79.Kb4 Bd3 80.Bf7 Be4 81.Kb5 Ke7 82.Bh5 Kd6 83.Kb6 Bd3 84.Bf3 Bf5 85.Be2 Bd7 86.Bd1 Bf5 87.Kb7
64/67 01:04 330,921k 5,108k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bc8 71.Be2 Bf5 72.Kb5 Bc2 73.Bf1 Bf5 74.Ka6 Bc2 75.Be2 Kc6 76.Ka5 Be4 77.Bb5+ Kd6 78.Be8 Bf5 79.Kb4 Be4 80.Bb5 Bf5 81.Be2 Bd7 82.Bd3 Bg4 83.Kb5 Bd1 84.Bb1 Be2+ 85.Kb6 Bg4 86.Bd3 Bd7 87.Ka5
65/68 01:10 358,225k 5,110k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bc8 71.Be2 Bf5 72.Kb5 Bc2 73.Bf1 Bf5 74.Ka6 Bc2 75.Be2 Kc6 76.Ka5 Be4 77.Bb5+ Kd6 78.Be8 Bd3 79.Kb6 Bf5 80.Ba4 Bd3 81.Kb7 Bf5 82.Bd1 Be6 83.Kb6 Bf5 84.Bf3 Bd7 85.Ka5 Bh3 86.Be2 Kc6 87.Kb4
66/68 01:10 363,215k 5,116k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bc8 71.Be2 Bf5 72.Kb5 Bc2 73.Bf1 Bf5 74.Ka6 Bc2 75.Be2 Kc6 76.Ka5 Be4 77.Bb5+ Kd6 78.Be8 Bd3 79.Kb6 Bf5 80.Bh5 Bd7 81.Bf3 Bh3 82.Ka5 Bd7 83.Be2 Bf5 84.Kb4 Kc6 85.Bd1 Bd3 86.Bf3 Kd6 87.Bh5 Be4 88.Be8
67/70 01:13 377,249k 5,111k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bc8 71.Be2 Bf5 72.Kb5 Bc2 73.Bf1 Bf5 74.Ka6 Bc2 75.Be2 Kc6 76.Ka5 Be4 77.Bb5+ Kd6 78.Be8 Bd3 79.Kb6 Bf5 80.Ba4 Bd3 81.Kb7 Bf5 82.Bd1 Be6 83.Be2 Bf5 84.Ka6 Bc2 85.Ka5 Bf5 86.Kb6 Bh3 87.Bd3 Bc8 88.Kb5 Bd7+ 89.Ka5
68/72 01:25 430,257k 5,059k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bc8 71.Be2 Bf5 72.Kb5 Bc2 73.Bf1 Bf5 74.Ka6 Bc2 75.Be2 Kc6 76.Ka5 Be4 77.Bb5+ Kd6 78.Be8 Bd3 79.Kb6 Bf5 80.Ba4 Bh3 81.Bc2 Bg4 82.Bd3 Bd7 83.Ka6 Bg4 84.Ka5 Kc6 85.Bb5+ Kd6 86.Be8 Be2 87.Bf7 Bf3 88.Bg6 Bd1 89.Bd3
69/72 01:30 454,888k 5,001k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bc8 71.Be2 Bf5 72.Kb5 Bc2 73.Bf1 Bf5 74.Ka6 Bc2 75.Be2 Kc6 76.Ka5 Be4 77.Bb5+ Kd6 78.Be8 Bf5 79.Kb6 Be4 80.Ba4 Bf5 81.Bb3 Be4 82.Bd1 Bf5 83.Be2 Bh3 84.Kb7 Bf5 85.Bf3 Bd7 86.Kb6 Bf5 87.Ka5 Kc6 88.Kb4 Kd6 89.Be2 Bc2
70/74 02:10 588,065k 4,497k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bc8 71.Be2 Bf5 72.Kb5 Be6 73.Bf3 Bd7+ 74.Kb4 Bf5 75.Be2 Bc2 76.Bb5 Be4 77.Bf1 Kc6 78.Be2 Bc2 79.Bg4 Be4 80.Bd1 Kd6 81.Bh5 Bd3 82.Bf7 Be4 83.Be8 Bd3 84.Ba4 Be4 85.Bd1 Kc6 86.Bb3 Kb6 87.Ba4 Bf5 88.Be8 Bc2 89.Bf7 Be4 90.Be6 Kc6
71/76 02:34 672,844k 4,362k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bc8 71.Be2 Bf5 72.Kb5 Be6 73.Bf3 Bd7+ 74.Kb4 Bf5 75.Be2 Bc2 76.Bb5 Be4 77.Bf1 Kc6 78.Be2 Bc2 79.Bg4 Be4 80.Bd1 Kd6 81.Bh5 Bd3 82.Kc3 Be4 83.Be8 Kc7 84.Kb4 Kb6 85.Ba4 Bf5 86.Bd1 Be4 87.Bb3 Kc6 88.Ba4+ Kb6 89.Bb5 Bf5 90.Be2 Kc6
72/74 02:39 697,552k 4,375k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bc8 71.Be2 Bf5 72.Kb5 Be6 73.Bf3 Bd7+ 74.Kb4 Bf5 75.Be2 Bc2 76.Bb5 Be4 77.Bf1 Kc6 78.Be2 Bc2 79.Bg4 Be4 80.Bd1 Kd6 81.Bh5 Bd3 82.Ka5 Be4 83.Kb6 Bf5 84.Be8 Be4 85.Bc6 Bg6 86.Ba4 Bd3 87.Kb7 Bf5 88.Be8 Be6 89.Kb6 Bf5 90.Bf7 Bg4
73/76 02:54 758,442k 4,355k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bc8 71.Be2 Bf5 72.Kb5 Be6 73.Bf3 Bd7+ 74.Kb4 Bf5 75.Be2 Bc2 76.Bb5 Be4 77.Bf1 Kc6 78.Be2 Bc2 79.Bg4 Be4 80.Bd1 Kd6 81.Bh5 Bd3 82.Ka5 Be4 83.Kb6 Bf5 84.Bf3 Be6 85.Bg2 Bd7 86.Ka6 Bf5 87.Bf1 Bc2 88.Be2 Kc6 89.Ka5 Be4 90.Bb5+ Kd6 91.Kb4 Bc2
74/78 03:37 978,510k 4,497k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bc8 71.Be2 Bf5 72.Kb5 Be6 73.Bf3 Bd7+ 74.Kb4 Bf5 75.Be2 Bc2 76.Bb5 Be4 77.Bf1 Kc6 78.Be2 Bc2 79.Bf3 Bd3 80.Kc3 Bf5 81.Be2 Be6 82.Bd3 Bg4 83.Bg6 Be2 84.Bc2 Bf3 85.Kb4 Bg4 86.Ba4+ Kd6 87.Bb5 Bh3 88.Be2 Bd7 89.Bd3 Bg4 90.Ka5 Bh3 91.Kb5 Bd7+ 92.Ka6 Bh3
75/80 03:55 1,066,305k 4,531k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bc8 71.Be2 Bf5 72.Kb5 Be6 73.Bf3 Bd7+ 74.Kb4 Bf5 75.Be2 Bc2 76.Bb5 Be4 77.Bf1 Kc6 78.Be2 Bc2 79.Bf3 Bd3 80.Kc3 Bf5 81.Be2 Be6 82.Bd3 Bg4 83.Bg6 Be2 84.Be8+ Kd6 85.Kb4 Bg4 86.Ka5 Be2 87.Bg6 Kc6 88.Bf7 Bd1 89.Be8+ Kd6 90.Kb6 Bc2 91.Bc6 Bb1 92.Bb7 Bf5 93.Ba6 Be6 94.Bd3 Bh3
76/80 04:12 1,155,502k 4,581k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bc8 71.Be2 Bf5 72.Kb5 Be6 73.Bf3 Bd7+ 74.Kb4 Bf5 75.Be2 Bc2 76.Bb5 Be4 77.Bf1 Kc6 78.Be2 Bc2 79.Bf3 Bd3 80.Kc3 Bf5 81.Be2 Be6 82.Bd3 Bg4 83.Bf1 Bf5 84.Kb3 Be4 85.Kb4 Kb6 86.Bb5 Bf5 87.Be2 Kc6 88.Bh5 Be4 89.Ka5 Kd6 90.Kb6 Bf5 91.Bf7 Bd7 92.Bg6 Be6 93.Bd3 Bh3
77/80 05:08 1,446,799k 4,683k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bc8 71.Be2 Bf5 72.Kb5 Be6 73.Bf3 Bd7+ 74.Kb4 Bf5 75.Be2 Bc2 76.Bb5 Be4 77.Bf1 Kc6 78.Be2 Bc2 79.Bf3 Bd3 80.Kc3 Bf5 81.Be2 Be6 82.Bd3 Bg4 83.Bf1 Bf5 84.Kb3 Be4 85.Kb4 Kb6 86.Bb5 Bf5 87.Ba4 Be4 88.Bd1 Kc6 89.Ka5 Kd6 90.Bh5 Bf5 91.Kb6 Bd7 92.Bg6 Be6 93.Bc2 Bg4
78/84 05:46 1,634,680k 4,717k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Kd6 64.Kxb6 Bxa4 65.Ka5 Bd7 66.Bg6 Kc6 67.Bd3 Bh3 68.Bb5+ Kd6 69.Kb6 Bf5 70.Bf1 Bc8 71.Be2 Bf5 72.Kb5 Be6 73.Bf3 Bd7+ 74.Kb4 Bf5 75.Be2 Bc2 76.Bb5 Be4 77.Bf1 Kc6 78.Be2 Bc2 79.Bf3 Bd3 80.Kc3 Bf5 81.Be2 Be6 82.Bd3 Bg4 83.Kb4 Kd6 84.Bg6 Kc6 85.Be8+ Kd6 86.Ka5 Bd1 87.Kb5 Be2+ 88.Kb6 Bd3 89.Bh5 Bf5 90.Bf3 Bd7 91.Ka5 Bf5 92.Be2 Kc6 93.Bf1 Kc7 94.Kb5 Kd6
79/91 06:29 1,881,922k 4,826k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Bf3 64.Be8 Be2 65.Bb5 Bg4 66.a5 bxa5 67.Ka6 Bf3 68.Kxa5 Be4 69.Ka6 Bf3 70.Bf1 Bg4 71.Kb5 Kd6 72.Kb6 Bc8 73.Be2 Bf5 74.Kb5 Be6 75.Bf3 Bd7+ 76.Kb4 Bf5 77.Be2 Bc2 78.Bb5 Be4 79.Bf1 Kc6 80.Be2 Bf5 81.Bb5+ Kb6 82.Be8 Be4 83.Bd7 Bd3 84.Kc3 Bf1 85.Be6 Bg2 86.Kb4 Be4 87.Bg4 Kc6 88.Kc3 Kd6 89.Bd1 Bf5 90.Be2 Kc6 91.Bh5 Be4 92.Bd1 Bf5 93.Bf3 Be6 94.Bh5 Bf5 95.Be8+ Kd6
80/85 07:04 2,064,500k 4,862k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Bf3 64.Be8 Be2 65.Bb5 Bg4 66.a5 bxa5 67.Ka6 Bf3 68.Kxa5 Be4 69.Ka6 Bf3 70.Bf1 Bg4 71.Kb5 Kd6 72.Kb6 Bc8 73.Be2 Bf5 74.Kb5 Be6 75.Bf3 Bd7+ 76.Kb4 Bf5 77.Be2 Bc2 78.Bb5 Be4 79.Bf1 Kc6 80.Be2 Bf5 81.Bd1 Bd3 82.Ba4+ Kb6 83.Bb3 Kc6 84.Kc3 Be4 85.Ba4+ Kc7 86.Bd1 Kc6 87.Bg4 Kd6 88.Be2 Bf5 89.Bb5 Be4 90.Kb4 Bf5 91.Ba4 Bd3 92.Ka5 Bf5 93.Kb6 Bd3 94.Bc6 Bc2 95.Bb5 Bf5 96.Kb7
81/93 07:14 2,117,874k 4,877k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Bf3 64.Be8 Be2 65.Bb5 Bg4 66.a5 bxa5 67.Ka6 Bf3 68.Kxa5 Be4 69.Ka6 Bf3 70.Bf1 Kc6 71.Ka5 Be4 72.Be2 Bf5 73.Bd1 Bd3 74.Ba4+ Kb7 75.Bb5 Bc2 76.Bd7 Bd3 77.Be6 Kc6 78.Bf7 Be2 79.Be8+ Kb7 80.Kb4 Kb6 81.Bd7 Bd3 82.Kc3 Be4 83.Be6 Bf3 84.Kb4 Kc6 85.Bf5 Bd1 86.Kc3 Kd6 87.Kd2 Ba4 88.Bd3 Bc6 89.Bc2 Bb5 90.Bg6 Kc6 91.Bf5 Kd6 92.Ke1 Kc6 93.Bg6 Bc4 94.Be8+ Kd6 95.Ba4 Bd3 96.Kd2 Be4 97.Bd1 Ke6 98.Bg4+ Kd6
82/88 07:26 2,184,333k 4,895k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Bf3 64.Be8 Be2 65.Bb5 Bg4 66.a5 bxa5 67.Ka6 Bf3 68.Kxa5 Be4 69.Ka6 Bf3 70.Bf1 Kc6 71.Ka5 Be4 72.Be2 Bf5 73.Bd1 Bd3 74.Bb3 Bf1 75.Kb4 Kd6 76.Ba4 Bd3 77.Bb5 Be4 78.Be8 Bf5 79.Kb5 Bh3 80.Bf7 Bd7+ 81.Kb4 Bf5 82.Bh5 Kc6 83.Ka5 Bd7 84.Bf3 Bf5 85.Bg2 Bd7 86.Bf1 Be6 87.Bd3 Bh3 88.Bb5+ Kc7 89.Kb4 Kd6 90.Be2 Kc6 91.Bd3 Bc8 92.Bb5+ Kd6 93.Be2 Bf5 94.Bd1 Kc6 95.Ba4+ Kb6 96.Bb3 Kc6 97.Bd1
83/89 07:36 2,242,695k 4,909k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Bf3 64.Be8 Be2 65.Bb5 Bg4 66.a5 bxa5 67.Ka6 Bf3 68.Kxa5 Be4 69.Ka6 Bf3 70.Bf1 Kc6 71.Ka5 Be4 72.Be2 Bf5 73.Bd1 Bd3 74.Bb3 Bf1 75.Kb4 Kd6 76.Ba4 Bd3 77.Bb5 Be4 78.Be8 Bf5 79.Kb5 Ke7 80.Bh5 Kd6 81.Be2 Bh3 82.Bd3 Bd7+ 83.Ka5 Bg4 84.Bg6 Kc7 85.Kb4 Kd6 86.Kc3 Be2 87.Bf7 Bf3 88.Be8 Be2 89.Ba4 Bf3 90.Kb4 Be4 91.Ka5 Bg2 92.Bb5 Kc7 93.Kb4 Kd6 94.Bd3 Bh3 95.Bb1 Bg4 96.Kb5 Bd7+ 97.Kb6 Bc8
84/88 09:18 2,821,946k 5,051k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Bf3 64.Be8 Be2 65.Bb5 Bg4 66.a5 bxa5 67.Ka6 Bf3 68.Kxa5 Be4 69.Ka6 Bf3 70.Bf1 Kc6 71.Ka5 Be4 72.Be2 Bf5 73.Bd1 Bd3 74.Bb3 Bf1 75.Kb4 Kd6 76.Ba4 Bd3 77.Bb5 Be4 78.Be8 Bf5 79.Bh5 Kc6 80.Ka5 Bd7 81.Bf3 Bf5 82.Bg2 Bd7 83.Bf1 Be6 84.Bd3 Bh3 85.Bb5+ Kc7 86.Kb4 Kd6 87.Ba4 Bf1 88.Bc2 Be2 89.Bg6 Kc6 90.Kc3 Kd6 91.Be8 Bf3 92.Ba4 Be2 93.Bb3 Kc6 94.Kb4 Bh5 95.Bc2 Bf3 96.Bd3 Bd1 97.Bf5 Be2
85/93 09:43 2,951,799k 5,057k +0.98 54.gxf4 Be4 55.Ba2 Bg2 56.Bb1 Bh3 57.Bd3 Bg4 58.Ka6 Kc6 59.a4 Bf3 60.Bxf5 Be2+ 61.Ka7 Bd1 62.Bg6 Kc7 63.Bf7 Bf3 64.Be8 Be2 65.Bb5 Bg4 66.a5 bxa5 67.Ka6 Bf3 68.Kxa5 Be4 69.Ka6 Bf3 70.Bf1 Kc6 71.Ka5 Be4 72.Be2 Bf5 73.Bd1 Bd3 74.Bb3 Bf1 75.Kb4 Kd6 76.Ba4 Bd3 77.Bb5 Be4 78.Be8 Bd3 79.Bf7 Kc6 80.Ka5 Be2 81.Be8+ Kc7 82.Ba4 Bf1 83.Kb4 Kd6 84.Bb3 Bd3 85.Ka5 Kc6 86.Bd1 Kc7 87.Kb4 Kc6 88.Bf3 Bf1 89.Kc3 Kd6 90.Bd1 Kc7 91.Bc2 Kc6 92.Ba4+ Kd6 93.Bb3 Be2 94.Bc2 Kc6 95.Ba4+ Kd6 96.Be8 Bf3 97.Bb5 Bd1 98.Kb4 Bf3
86/93+ 19:01 5,868,056k 5,142k +1.05 54.exf4

[Uri Blass]

Note that with multi-pv of 2 moves stockfish is clearly faster and it may be interesting to have a match between stockfish and itself with fixed time per move when one engine use multi-pv with 2 options and the second use only one option and I wonder if there is some interface that allow it.

I do not know but maybe if the time per move is long enough multi-pv with 2 options can win.

[jp]

Note that with multi-pv of 2 moves stockfish is clearly faster and it may be interesting to have a match between stockfish and itself with fixed time per move when one engine use multi-pv with 2 options and the second use only one option and I wonder if there is some interface that allow it.

I do not know but maybe if the time per move is long enough multi-pv with 2 options can win.

What do you mean by "clearly faster"? Do you mean nps?

Others here say multiPV=2 SF will be 50 elo weaker than multiPV=1 SF.

[Ovyron]

Thanks guys! So now that I know what happened I can reconstruct how this happened... this is some kind of tutorial about how to play the losing move...

I was using McCain X (4CPU, 128 MB RAM.) The idea was to play a game at low depth to see how the game would have continued. Then I reach high depth in multiPV=3 to look for alternative moves, and check if that suggest a different move than low depth...

I make it play a move at Depth 28:

28/43 0:01 +0.69 53...gxf4 54.gxf4 Bc4 55.Bc2 Bb5 56.Bxf5 Be2 57.Be6 Bf3 58.Bh3 Be2 59.Bf5 Bf1 60.Be6 Bg2 61.Bg4 Bf1 62.Bh5 Bd3 63.Bd1 Bc4 64.Bf3 Bb3 65.Bh5 Bc2 66.Be2 Bb3 (4.558.130) 3495

And a full Depth=28 game that ends in a draw (because it needs some depth 89 to find 54.exf4!!)

Now it's time to check at a higher depth MultiPV=3, what do I see?

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37 0:01 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.Bg6 Bf1 62.a4 b5 63.axb5 Bxb5 64.Bf7 Kd6 65.Kb7 Bd7 66.Bg6 Be6 (7.207.927) 4002
37 0:01 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.Bg6 Bf1 63.a4 b5 64.axb5 Bxb5 65.Bf7 Kd6 66.Kb7 Bd7 (7.207.927) 4002
37 0:01 +0.88 53...Bc4 54.Bc2 Bf1 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Kc6 59.Bc2 Bf3 60.Ba4+ Kc7 61.Kb5 Be2+ 62.Kb4 Bg4 63.Bb5 Bf3 64.Bf1 Kc6 65.Bd3 Bg4 66.Bb5+ Kb7 (7.207.927) 4002
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38 0:01 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.Bg6 Bf1 62.a4 b5 63.axb5 Bxb5 64.Bf7 Kd6 65.Kb7 Bd7 66.Bg6 Be6 (7.588.508) 3991
38 0:01 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.Bg6 Bf1 63.a4 b5 64.axb5 Bxb5 65.Bf7 Kd6 66.Kb7 Bd7 (7.588.508) 3991
38 0:01 +0.88 53...Bc4 54.Bc2 Bf1 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bg4 60.Kb4 Kc6 61.Bb5+ Kb7 62.Bf1 Kc7 63.Ba6 Kc6 64.Bd3 Kc7 65.Bg6 Be2 66.Bf5 Bf3 (7.588.508) 3991
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39 0:02 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.Bg6 Bf1 62.a4 b5 63.axb5 Bxb5 64.Bf7 Kd6 65.Kb7 Bd7 66.Bg6 Be6 (10.486.067) 4019
39 0:02 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.Bg6 Bf1 63.a4 b5 64.axb5 Bxb5 65.Bf7 Kd6 66.Kb7 Bd7 (10.486.067) 4019
39 0:02 +0.88 53...Bc4 54.Bc2 Bf1 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bg4 60.Kb4 Kd6 61.Bb5 Kc7 62.Kc3 Kd6 63.Kd2 Ke6 64.Ba6 Bf3 65.Bd3 Bg4 66.Kc3 Kd6 (10.486.067) 4019
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40 0:02 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.Bg6 Bf1 62.a4 b5 63.axb5 Bxb5 64.Bf7 Kd6 65.Kb7 Bd7 66.Bg6 Be6 (11.351.269) 4018
40 0:02 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.Bg6 Bf1 63.a4 b5 64.axb5 Bxb5 65.Bf7 Kd6 66.Kb7 Bd7 (11.351.269) 4018
40 0:02 +0.88 53...Bc4 54.Bc2 Bf1 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bg4 60.Kb4 Kd6 61.Bb5 Kc7 62.Kc3 Kd6 63.Kd2 Ke6 64.Ba6 Bf3 65.Bd3 Bg4 66.Kc3 Kd6 (11.351.269) 4018
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41 0:03 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.Bg6 Bf1 62.a4 b5 63.axb5 Bxb5 64.Bf7 Kd6 65.Kb7 Bd7 66.Bg6 Be6 (14.120.286) 4006
41 0:03 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.Bg6 Bf1 63.a4 b5 64.axb5 Bxb5 65.Bf7 Kd6 66.Kb7 Bd7 (14.120.286) 4006
41 0:03 +0.88 53...Bc4 54.Bc2 Bf1 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bg4 60.Kb4 Kd6 61.Bb5 Kc7 62.Kc3 Kd6 63.Kd2 Ke6 64.Ba6 Bf3 65.Bd3 Bg4 66.Kc3 Kd6 (14.120.286) 4006
-----
42 0:03 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.Bg6 Bf1 62.a4 b5 63.axb5 Bxb5 64.Bf7 Kd6 65.Kb7 Bd7 66.Bg6 Be6 (15.951.010) 3991
42 0:03 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.Bg6 Bf1 63.a4 b5 64.axb5 Bxb5 65.Bf7 Kd6 66.Kb7 Bd7 (15.951.010) 3991
42 0:03 +0.88 53...Bc4 54.Bc2 Bf1 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bg4 60.Kb4 Kd6 61.Bb5 Kc7 62.Kc3 Kd6 63.Kd2 Ke6 64.Bd3 Bf3 65.Kc3 Kd6 66.Ba6 Ke6 (15.951.010) 3991
-----
43 0:04 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.Bg6 Bf1 62.a4 b5 63.axb5 Bxb5 64.Bf7 Kd6 65.Kb7 Bd7 66.Bg6 Be6 (18.370.972) 3993
43 0:04 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.Bg6 Bf1 63.a4 b5 64.axb5 Bxb5 65.Bf7 Kd6 66.Kb7 Bd7 (18.370.972) 3993
43 0:04 +0.88 53...Bc4 54.Bc2 Bf1 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bg4 60.Kb4 Kd6 61.Bb5 Kc7 62.Kc3 Kd6 63.Kd2 Ke6 64.Bd3 Bh5 65.Kc3 Bg4 66.Ba6 Bd1 (18.370.972) 3993
-----
44 0:05 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.Bg6 Bf1 62.a4 b5 63.axb5 Bxb5 64.Bf7 Kd6 65.Kb7 Bd7 66.Bg6 Be6 (23.140.726) 3983
44 0:05 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.Bg6 Bf1 63.a4 b5 64.axb5 Bxb5 65.Bf7 Kd6 66.Kb7 Bd7 (23.140.726) 3983
44 0:05 +0.88 53...Bc4 54.Bc2 Bf1 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bg4 60.Kb4 Kd6 61.Bb5 Kc7 62.Kc3 Kd6 63.Kd2 Ke6 64.Bd3 Bh5 65.Kc3 Bg4 66.Ba6 Bd1 (23.140.726) 3983
-----
45 0:09 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.Bg6 Bf1 62.a4 b5 63.axb5 Bxb5 64.Bf7 Kd6 65.Kb7 Bd7 66.Bg6 Be6 (36.437.412) 3709
45 0:09 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.Bg6 Bf1 63.a4 b5 64.axb5 Bxb5 65.Bf7 Kd6 66.Kb7 Bd7 (36.437.412) 3709
45 0:09 +0.94 53...Bc4 54.Bc2 Bf1 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bh5 60.Bf5 Bf3 61.Kb4 Kc6 62.Kc3 Kd6 63.Kd2 Kc6 64.Bd3 Bg4 65.Bf1 Bf5 66.Be2 Be4 (36.437.412) 3709
-----
46 0:12 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.Bg6 Bf1 62.a4 b5 63.axb5 Bxb5 64.Bf7 Kd6 65.Kb7 Bd7 66.Bg6 Be6 (45.652.311) 3758
46 0:12 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.Bg6 Bf1 63.a4 b5 64.axb5 Bxb5 65.Bf7 Kd6 66.Kb7 Bd7 (45.652.311) 3758
46 0:12 +0.94 53...Bc4 54.Bc2 Bf1 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bh5 60.Bf5 Bf3 61.Kb4 Kc6 62.Kc3 Kd6 63.Kd2 Kc6 64.Bd3 Bg4 65.Bf1 Bf5 66.Be2 Be4 (45.652.311) 3758
-----
47 0:14 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.Bg6 Bf1 62.a4 Bh3 63.Bf7 Bg2 64.Be8 Be4 65.Ka6 Bd3+ 66.Bb5 Bf5 (54.436.219) 3774
47 0:14 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.Bg6 Bf1 63.a4 Bh3 64.Bf7 Bg2 65.Be8 Be4 66.Ka6 Bd3+ (54.436.219) 3774
47 0:14 +0.94 53...Bc4 54.Bc2 Bf1 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bh5 60.Bf5 Bf3 61.Kb4 Kc6 62.Kc3 Kd6 63.Kd2 Kc6 64.Bd3 Bg4 65.Bf1 Bf5 66.Be2 Be4 (54.436.219) 3774
-----
48 0:16 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.Bg6 Bf1 62.a4 Bh3 63.Bf7 Bg2 64.Be8 Be4 65.Ka6 Bd3+ 66.Bb5 Bf5 (62.766.050) 3801
48 0:16 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.Bg6 Bf1 63.a4 Bh3 64.Bf7 Bg2 65.Be8 Be4 66.Ka6 Bd3+ (62.766.050) 3801
48 0:16 +0.94 53...Bc4 54.Bc2 Bb5 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bh5 60.Bf5 Bf3 61.Kb4 Kc6 62.Kc3 Kd6 63.Kd2 Kc6 64.Bd3 Bg4 65.Bf1 Bf5 66.Be2 Be4 (62.766.050) 3801
-----
49 0:21 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.a4 b5 62.axb5 Bxb5 63.Bd1 Bc4 64.Bf3 Ba2 65.Ka6 Kc6 66.Ka5 Bc4 (80.818.403) 3829
49 0:21 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.a4 b5 63.axb5 Bxb5 64.Bd1 Bc4 65.Bf3 Ba2 66.Ka6 Kc6 (80.818.403) 3829
49 0:21 +0.94 53...Bc4 54.Bc2 Bb5 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bh5 60.Bf5 Bf3 61.Kb4 Kc6 62.Kc3 Kd6 63.Kd2 Kc6 64.Bd3 Bg4 65.Bf1 Bf5 66.Be2 Be4 (80.818.403) 3829
-----
50 0:25 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.a4 b5 62.axb5 Bxb5 63.Bd1 Bc4 64.Bf3 Ba2 65.Ka6 Kc6 66.Ka5 Bc4 (97.597.482) 3860
50 0:25 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.a4 b5 63.axb5 Bxb5 64.Bd1 Bc4 65.Bf3 Ba2 66.Ka6 Kc6 (97.597.482) 3860
50 0:25 +0.94 53...Bc4 54.Bc2 Bb5 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bh5 60.Bf5 Bf3 61.Kb4 Kc6 62.Kc3 Kd6 63.Kd2 Kc6 64.Bd3 Bg4 65.Bf1 Bf5 66.Be2 Be4 (97.597.482) 3860
-----
51 0:29 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.a4 b5 62.axb5 Bxb5 63.Bd1 Bc4 64.Bf3 Ba2 65.Ka6 Kc6 66.Ka5 Bc4 (113.362.855) 3876
51 0:29 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.a4 b5 63.axb5 Bxb5 64.Bd1 Bc4 65.Bf3 Ba2 66.Ka6 Kc6 (113.362.855) 3876
51 0:29 +0.94 53...Bc4 54.Bc2 Bb5 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bh5 60.Bf5 Bf3 61.Kb4 Kc6 62.Kc3 Kd6 63.Kd2 Kc6 64.Bd3 Bg4 65.Bf1 Bf5 66.Be2 Be4 (113.362.855) 3876
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52 0:34 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.a4 b5 62.axb5 Bxb5 63.Bd1 Bc4 64.Bf3 Ba2 65.Ka6 Kc6 66.Ka5 Bc4 (133.469.645) 3899
52 0:34 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.a4 b5 63.axb5 Bxb5 64.Bd1 Bc4 65.Bf3 Ba2 66.Ka6 Kc6 (133.469.645) 3899
52 0:34 +0.94 53...Bc4 54.Bc2 Bb5 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bh5 60.Bf5 Bf3 61.Kb4 Kc6 62.Kc3 Kd6 63.Kd2 Kc6 64.Bd3 Bg4 65.Bf1 Bf5 66.Be2 Be4 (133.469.645) 3899
-----
53 0:44 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.a4 b5 62.axb5 Bxb5 63.Bd1 Bc4 64.Bf3 Ba2 65.Ka6 Kc6 66.Ka5 Bc4 (176.008.258) 3940
53 0:44 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.a4 b5 63.axb5 Bxb5 64.Bd1 Bc4 65.Bf3 Ba2 66.Ka6 Kc6 (176.008.258) 3940
53 0:44 +0.94 53...Bc4 54.Bc2 Bb5 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bh5 60.Bf5 Bf3 61.Kb4 Kc6 62.Kc3 Kd6 63.Kd2 Kc6 64.Bd3 Bg4 65.Bf1 Bf5 66.Be2 Be4 (176.008.258) 3940
-----
54 0:51 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.a4 b5 62.axb5 Bxb5 63.Bd1 Bc4 64.Bf3 Bb3 65.Bh5 Bc2 66.Bf7 Be4 (203.371.130) 3947
54 0:51 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.a4 b5 63.axb5 Bxb5 64.Bd1 Bc4 65.Bf3 Bb3 66.Bh5 Bc2 (203.371.130) 3947
54 0:51 +0.94 53...Bc4 54.Bc2 Bb5 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bh5 60.Bf5 Bf3 61.Kb4 Kc6 62.Kc3 Kd6 63.Kd2 Kc6 64.Bd3 Bg4 65.Bf1 Bf5 66.Be2 Be4 (203.371.130) 3947
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55 1:00 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.a4 b5 62.axb5 Bxb5 63.Bd1 Bc4 64.Bf3 Bb3 65.Bh5 Bc2 66.Bf7 Be4 (239.566.668) 3968
55 1:00 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.a4 b5 63.axb5 Bxb5 64.Bd1 Bc4 65.Bf3 Bb3 66.Bh5 Bc2 (239.566.668) 3968
55 1:00 +0.94 53...Bc4 54.Bc2 Bb5 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bh5 60.Bf5 Bf3 61.Kb4 Kc6 62.Kc3 Kd6 63.Kd2 Kc6 64.Bd3 Bg4 65.Bf1 Bf5 66.Be2 Be4 (239.566.668) 3968
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56 1:05 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.a4 b5 62.axb5 Bxb5 63.Bd1 Bc4 64.Bf3 Bb3 65.Bh5 Bc2 66.Bf7 Be4 (260.363.851) 3970
56 1:05 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.a4 b5 63.axb5 Bxb5 64.Bd1 Bc4 65.Bf3 Bb3 66.Bh5 Bc2 (260.363.851) 3970
56 1:05 +0.94 53...Bc4 54.Bc2 Bb5 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bh5 60.Bf5 Bf3 61.Kb4 Kc6 62.Kc3 Kd6 63.Kd2 Kc6 64.Bd3 Bg4 65.Bf1 Bf5 66.Be2 Be4 (260.363.851) 3970
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57 1:18 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.a4 b5 62.axb5 Bxb5 63.Bd1 Bc4 64.Bf3 Bb3 65.Bh5 Bc2 66.Bf7 Be4 (311.282.215) 3984
57 1:18 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.a4 b5 63.axb5 Bxb5 64.Bd1 Bc4 65.Bf3 Bb3 66.Bh5 Bc2 (311.282.215) 3984
57 1:18 +0.94 53...Bc4 54.Bc2 Bb5 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bh5 60.Bf5 Bf3 61.Kb4 Kc6 62.Kc3 Kd6 63.Kd2 Kc6 64.Bd3 Bg4 65.Bf1 Bf5 66.Be2 Be4 (311.282.215) 3984
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58 1:27 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.a4 b5 62.axb5 Bxb5 63.Bd1 Bd3 64.Bf3 Kc6 65.Kb8 Bf5 66.Bg2 Bg4 (351.339.507) 3997
58 1:27 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.a4 b5 63.axb5 Bxb5 64.Bd1 Bd3 65.Bf3 Kc6 66.Kb8 Bf5 (351.339.507) 3997
58 1:27 +0.94 53...Bc4 54.Bc2 Bb5 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bh5 60.Bf5 Bf3 61.Kb4 Kc6 62.Kc3 Kd6 63.Kd2 Kc6 64.Bd3 Bg4 65.Bf1 Bf5 66.Be2 Be4 (351.339.507) 3997
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59 1:46 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.a4 b5 62.axb5 Bxb5 63.Bd1 Bd3 64.Bf3 Kc6 65.Kb8 Bf5 66.Bg2 Bg4 (427.135.553) 4008
59 1:46 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.a4 b5 63.axb5 Bxb5 64.Bd1 Bd3 65.Bf3 Kc6 66.Kb8 Bf5 (427.135.553) 4008
59 1:46 +0.94 53...Bc4 54.Bc2 Bb5 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bh5 60.Bf5 Bf3 61.Kb4 Kc6 62.Kc3 Kd6 63.Kd2 Kc6 64.Bd3 Bg4 65.Bf1 Bf5 66.Be2 Be4 (427.135.553) 4008
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60 1:59 +0.64 53...gxf4 54.gxf4 Bc4 55.Bc2 Be2 56.Bxf5 Bf1 57.Bg4 Bd3 58.Bd1 Bf1 59.Bb3 Bc4 60.Bc2 Be2 61.a4 b5 62.axb5 Bxb5 63.Bd1 Bd3 64.Bf3 Kc6 65.Kb8 Bf5 66.Bg2 Bg4 (480.506.262) 4026
60 1:59 +0.64 53...Be4 54.Ba2 gxf4 55.gxf4 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg4 Bd3 59.Bd1 Bf1 60.Bb3 Bc4 61.Bc2 Be2 62.a4 b5 63.axb5 Bxb5 64.Bd1 Bd3 65.Bf3 Kc6 66.Kb8 Bf5 (480.506.262) 4026
60 1:59 +0.94 53...Bc4 54.Bc2 Bb5 55.Bxf5 Be2 56.Bc2 Bf3 57.Bd3 Bg2 58.Ka6 Bf3 59.Kb5 Bh5 60.Bf5 Bf3 61.Kb4 Kc6 62.Kc3 Kd6 63.Kd2 Kc6 64.Bd3 Bg4 65.Bf1 Bf5 66.Be2 Be4 (480.506.262) 4026

So, it looks like Be4 and gxf4 just transpose and there's no progress to be seen.

Why do I only analyze it for 2 minutes? Because I analyse by depth, not by time, lest I'd waste too much time in obvious moves and recaptures. Why don't I analyze higher than Depth 60? Because this was just one of many lines I analyzed, I figured Depth 60 was good enough and fast enough to let me analyze as much as possible. Oops.

Now I play a game again to simulate what would happen, but instead of depth 28 I use Depth 60, the reply by white is...

35/46 0:01 +0.60 54.gxf4 Be4 55.Bd1 Bd3 56.Bh5 Bf1 57.Bf7 Bg2 58.Be8 Be4 59.Bb5 Bc2 60.Ba6 Be4 61.Be2 Bc2 62.Ka6 Kc6 63.Bf3 Bb3 64.Bh5 Bc2 65.Be8+ Kc7 66.Kb5 Bd3+ 67.Kb4 (1.809.928) 1172
36/44 0:01 +0.54 54.gxf4 Be4 55.Bd1 Bd3 56.Bh5 Bf1 57.Be8 Bd3 58.Bg6 Bb1 59.Bh5 Bd3 60.Be8 Be4 61.Bf7 Bf3 62.Bg6 Bg4 63.Ka8 Bh3 64.Bf7 Bg2 65.Bh5 Be4 66.Be2 Bc2 67.Ba6 (1.998.646) 1178
37/46 0:02 +0.54 54.gxf4 Be4 55.Bd1 Bd3 56.Bh5 Bf1 57.Be8 Bd3 58.Bg6 Bb1 59.Bh5 Bd3 60.Be8 Be4 61.Bf7 Bf3 62.Bg6 Bg4 63.Ka8 Bh3 64.Bf7 Bg2 65.Be6 Be4 66.Ka7 Kd6 67.Bc8 (2.575.251) 1180
38/47 0:03 +0.66 54.gxf4 Be4 55.Bd1 Bb1 56.Bf3 Ba2 57.Be2 Bb1 58.Bd1 Be4 59.Bb3 Bf3 60.Bc2 Be2 61.Bxf5 Bf1 62.Be6 Bg2 63.Bf7 Bf3 64.Bg6 Be2 65.Be8 Bf1 66.Bf7 Bg2 67.Bg6 (4.010.595) 1196
39/47 0:04 +0.60 54.gxf4 Be4 55.Bd1 Bb1 56.Bf3 Ba2 57.Be2 Bb1 58.Bd1 Be4 59.Bb3 Bf3 60.Bc2 Be2 61.Bxf5 Bf1 62.Be6 Bg2 63.Bg4 Bf1 64.Bf5 Be2 65.Be6 Bf3 66.Bh3 Be2 67.Bg2 (5.048.908) 1191
40/50 0:04 +0.60 54.gxf4 Be4 55.Bd1 Bb1 56.Bf3 Ba2 57.Be2 Bb1 58.Bd1 Be4 59.Bb3 Bf3 60.Bc2 Be2 61.Bxf5 Bf1 62.Be6 Bg2 63.Bg4 Bf1 64.Bf5 Be2 65.Be6 Bf3 66.Bh3 Be2 67.Bg2 (5.339.985) 1193
41/51 0:04 +0.60 54.gxf4 Be4 55.Bd1 Bb1 56.Bf3 Ba2 57.Be2 Bb1 58.Bd1 Be4 59.Bb3 Bf3 60.Bc2 Be2 61.Bxf5 Bf1 62.Be6 Bg2 63.Bg4 Bf1 64.Bf5 Be2 65.Be6 Bf3 66.Bh3 Be2 67.Bg2 (5.506.471) 1191
42/57 0:05 +0.60 54.gxf4 Be4 55.Bd1 Bb1 56.Bf3 Ba2 57.Be2 Bb1 58.Bd1 Be4 59.Bb3 Bf3 60.Bc2 Be2 61.Bxf5 Bf1 62.Be6 Bg2 63.Bg4 Bf1 64.Bf5 Be2 65.Be6 Bf3 66.Bh3 Be2 67.Bg2 (6.540.427) 1199
43/55 0:05 +0.60 54.gxf4 Be4 55.Bd1 Bb1 56.Bf3 Ba2 57.Be2 Bb1 58.Bd1 Be4 59.Bb3 Bf3 60.Bc2 Be2 61.Bxf5 Bf1 62.Be6 Bg2 63.Bg4 Bf1 64.Bf5 Be2 65.Be6 Bf3 66.Bh3 Be2 67.Bg2 (6.929.096) 1201
44/59 0:07 +0.67 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Be6 Bg2 59.Bg4 Bf1 60.Bf5 Be2 61.Be6 Bf3 62.Bh3 Be2 63.Bg2 Bc4 64.Bf3 Bb3 65.Bh5 Bc2 66.Be2 Bb3 67.Bb5 (9.049.115) 1213
45/59 0:08 +0.62 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Be6 Bg2 59.Bg4 Bf1 60.Bf5 Be2 61.Be6 Bf3 62.Bh3 Be2 63.Ka8 Bd3 64.Bg2 Bc4 65.Ka7 Bb3 66.Bh3 Bc2 67.Bf1 (10.515.288) 1214
46/59 0:09 +0.65 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Be6 Bg2 59.Bg4 Bf1 60.Bf5 Be2 61.Bg6 Bf1 62.Bf7 Bg2 63.Be6 Be4 64.a4 Bg2 65.Bg8 Be4 66.Bf7 Bf3 67.Be8 (11.863.128) 1213
47/62 0:11 +0.67 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg6 Be2 59.Be8 Bd3 60.a4 Be4 61.Ka6 Bd3+ 62.Bb5 Bc2 63.a5 bxa5 64.Kxa5 Kd6 65.Kb4 Bf5 66.Kc3 Bb1 67.Ba6 (14.302.200) 1217
48/53 0:13 +0.67 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg6 Be2 59.Be8 Bd3 60.a4 Be4 61.Ka6 Bd3+ 62.Bb5 Bc2 63.a5 bxa5 64.Kxa5 Kd6 65.Kb4 Bf5 66.Kc3 Bb1 67.Ba6 (16.357.805) 1216
49/56 0:15 +0.67 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg6 Be2 59.Be8 Bd3 60.a4 Be4 61.Ka6 Bd3+ 62.Bb5 Bc2 63.a5 bxa5 64.Kxa5 Kd6 65.Kb4 Bf5 66.Kc3 Bb1 67.Ba6 (18.454.225) 1214
50/59 0:16 +0.67 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg6 Be2 59.Be8 Bd3 60.a4 Be4 61.Ka6 Bd3+ 62.Bb5 Bc2 63.a5 bxa5 64.Kxa5 Kd6 65.Kb4 Bf5 66.Kc3 Bb1 67.Ba6 (19.825.556) 1215
51/58 0:18 +0.67 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg6 Be2 59.Be8 Bd3 60.a4 Be4 61.Ka6 Bd3+ 62.Bb5 Bc2 63.a5 bxa5 64.Kxa5 Kd6 65.Kb4 Bf5 66.Kc3 Bb1 67.Ba6 (22.711.060) 1218
52/57 0:21 +0.67 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg6 Be2 59.Be8 Bd3 60.a4 Be4 61.Ka6 Bd3+ 62.Bb5 Bc2 63.a5 bxa5 64.Kxa5 Kd6 65.Kb4 Bf5 66.Kc3 Bb1 67.Ba6 (25.812.214) 1220
53/59 0:23 +0.67 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg6 Be2 59.Be8 Bd3 60.a4 Be4 61.Ka6 Bd3+ 62.Bb5 Bc2 63.a5 bxa5 64.Kxa5 Kd6 65.Kb4 Bf5 66.Kc3 Bb1 67.Ba6 (28.330.347) 1220
54/61 0:27 +0.67 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg6 Be2 59.Be8 Bd3 60.a4 Be4 61.Ka6 Bd3+ 62.Bb5 Bc2 63.a5 bxa5 64.Kxa5 Bf5 65.Kb4 Kd6 66.Kc3 Bb1 67.Ba6 (33.384.814) 1221
55/63 0:29 +0.67 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg6 Be2 59.Be8 Bd3 60.a4 Be4 61.Ka6 Bd3+ 62.Bb5 Bc2 63.a5 bxa5 64.Kxa5 Bf5 65.Kb4 Kd6 66.Kc3 Bb1 67.Ba6 (35.715.256) 1223
56/62 0:31 +0.67 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg6 Be2 59.Be8 Bd3 60.a4 Be4 61.Ka6 Bd3+ 62.Bb5 Bc2 63.a5 bxa5 64.Kxa5 Bf5 65.Kb4 Kd6 66.Kc3 Bb1 67.Ba6 (39.004.717) 1225
57/63 0:35 +0.67 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg6 Be2 59.Be8 Bd3 60.a4 Be4 61.Ka6 Bd3+ 62.Bb5 Bc2 63.a5 bxa5 64.Kxa5 Bf5 65.Kb4 Kd6 66.Kc3 Bb1 67.Ba6 (42.997.237) 1225
58/68 0:39 +0.67 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg6 Be2 59.Be8 Bd3 60.a4 Be4 61.Ka6 Bd3+ 62.Bb5 Bc2 63.a5 bxa5 64.Kxa5 Bf5 65.Kb4 Kd6 66.Kc3 Bb1 67.Ba6 (49.081.164) 1227
59/62 0:42 +0.67 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg6 Be2 59.Be8 Bd3 60.a4 Be4 61.Ka6 Bd3+ 62.Bb5 Bc2 63.a5 bxa5 64.Kxa5 Bf5 65.Kb4 Kd6 66.Kc3 Bb1 67.Ba6 (51.752.781) 1227
60/64 0:50 +0.67 54.gxf4 Be4 55.Ba2 Bf3 56.Bb1 Be2 57.Bxf5 Bf1 58.Bg6 Be2 59.Be8 Bd3 60.a4 Be4 61.Ka6 Bd3+ 62.Bb5 Bc2 63.a5 bxa5 64.Kxa5 Bf5 65.Kb4 Kd6 66.Kc3 Bb1 67.Ba6 (61.709.833) 1225

And the rest of the moves lead to a drawn game again.

I assume the opponent has nothing and he's just prolonging the game (that's what I was thinking since move 40, as I hadn't seen a single white win in analysis, so this position didn't seem special at all), so I play 53...gxf4?? and lose the game.

Had I used MultiPV to look for alternative moves for the opponent, I'd have seen the key move that had White winning. For some reason I thought that if I could draw Depth 60 McCain X I could draw against anything.

Note that with multi-pv of 2 moves stockfish is clearly faster and it may be interesting to have a match between stockfish and itself with fixed time per move when one engine use multi-pv with 2 options and the second use only one option and I wonder if there is some interface that allow it.

Sure, the Shredder GUI allows for this, just add MultiPV=2 to engine options to a personality file and have them play. For more versatility you'd want to try the Lucas Chess GUI (where you could play different engines at different Depths and MultiPVs, while Shredder only allows same depth.)

[ChickenLogic]

[d]8/3b2k1/1p3pp1/3p1p2/3P1P2/P3P3/5KP1/5B2 b - -

At depth 100/187 SF dev finally shows +2.96 with analysis contempt on (c=24 so real eval is probably around +3.2 is my guess). So this might just be mate in N from this position.

[Uri Blass]

Note that with multi-pv of 2 moves stockfish is clearly faster and it may be interesting to have a match between stockfish and itself with fixed time per move when one engine use multi-pv with 2 options and the second use only one option and I wonder if there is some interface that allow it.

I do not know but maybe if the time per move is long enough multi-pv with 2 options can win.

What do you mean by "clearly faster"? Do you mean nps?

Others here say multiPV=2 SF will be 50 elo weaker than multiPV=1 SF.

clearly faster I mean in finding the right move for white exf4.
I am sure that at fast time control multi-PV=2 is weaker for stockfish.
I am not sure about slow time control(one minute per move or slower).

[Uri Blass]

[d]8/3b2k1/1p3pp1/3p1p2/3P1P2/P3P3/5KP1/5B2 b - -

At depth 100/187 SF dev finally shows +2.96 with analysis contempt on (c=24 so real eval is probably around +3.2 is my guess). So this might just be mate in N from this position.

Can you post the analysis?

If somebody can win it is only white but we saw no analysis that show winning for white.

Note that I did not give stockfish hours to analyze and I agree it is better to play earlier a5 and not go to this position not because of knowing that this position is winning for white but because it seems to me that only white has winning chances.

[Paloma]

[d]8/3b2k1/1p3pp1/3p1p2/3P1P2/P3P3/5KP1/5B2 b - -

At depth 100/187 SF dev finally shows +2.96 with analysis contempt on (c=24 so real eval is probably around +3.2 is my guess). So this might just be mate in N from this position.

Which move did sf choose with so high eval?

[ChickenLogic]

Kf7 the move for black and then Ke1 ?!

SF_Endgame.png