Can any engine at some hardware find the draw?

[Aser Huerga]

[D] 7r/p3k3/2p5/1pPp4/3P4/PP4P1/3P1PB1/2K5 w - -

A position a good player can find easily, but engines can't stand.

[AdminX]

[d]7r/p3k3/2p5/1pPp4/3P4/PP4P1/3P1PB1/2K5 w - - 0 1

Analysis by Yace Paderborn experimental - Book by Daniel Mehrmann:

1.f4 Rg8 2.Bf3 Rxg3 3.Bd1 Rd3 4.a4
= (0.21) Depth: 6/10 00:00:00 10kN
= (-0.25) Depth: 7/12 00:00:00 20kN

1.Kc2 Rh2 2.Bf3 Rxf2 3.Bd1 Rg2 4.g4 Rg3 5.a4 b4 6.a5
= (0.05 ++) Depth: 7/12 00:00:00 22kN
= (0.17) Depth: 11/18 00:00:00 397kN

1.b4 Rh2 2.Bf3 Rxf2 3.Bd1 Rg2 4.g4 Rg3 5.a4 bxa4 6.Bxa4 Rxg4 7.Bxc6 Rxd4 8.Kd1 Rxb4
= (0.18 ++) Depth: 11/18 00:00:00 546kN
= (-0.11) Depth: 14/22 00:00:01 2649kN

1.Kc2 Rh2 2.Bf3 Rxf2 3.Bd1 Rg2 4.g4 Kf6 5.a4 b4 6.Bf3 Rf2 7.Bd1 Kg5 8.Kd3 Kf4 9.a5 Rf1 10.Kc2 Ke4 11.g5 Rg1 12.d3+ Kxd4 13.g6
= (-0.10 ++) Depth: 14/22 00:00:01 3338kN
=/+ (-0.29) Depth: 21/39 00:03:45 526mN

[Aser Huerga]

Hi Ted,

thanks for your analysis. I think these variations are won by black, and there's only a way to get draw.

Cheers.

[michiguel]

Hi Ted,

thanks for your analysis. I think these variations are won by black, and there's only a way to get draw.

Cheers.

Kd1 Rh2/ Ke1 Rxg2/ Kf1 Rh2/ Kg1 Rh3/ Kg2 Rh8 /f3 and there is a perfect fortress.
A classic beauty.

Engine programmers are generally not interested in dealing with this type of positions, and that is a pity. I wish I have time to pay attention to it because it is a very interesting "artificial intelligence" problem.

Miguel

[Aser Huerga]

Hi Ted,

thanks for your analysis. I think these variations are won by black, and there's only a way to get draw.

Cheers.

Kd1 Rh2/ Ke1 Rxg2/ Kf1 Rh2/ Kg1 Rh3/ Kg2 Rh8 /f3 and there is a perfect fortress.
A classic beauty.

Engine programmers are generally not interested in dealing with this type of positions, and that is a pity. I wish I have time to pay attention to it because it is a very interesting "artificial intelligence" problem.

Miguel

Very good, Miguel! I think it's and interesting and beautiful puzzle.

Another beautiful fortress is the following:

[D]1N6/b7/8/7p/3p3k/5P2/6PK/8 w - -

This position is probably solved by engines, but sure showing a big negative evaluation instead draw.

[Aser Huerga]

And the last one I had see in the last days is fantastic:

[D]1R6/8/8/5bp1/4p2k/8/B1p2PKP/8 w - -

Another incredible draw. Sure most players resign in this position.

[Uri Blass]

Hi Ted,

thanks for your analysis. I think these variations are won by black, and there's only a way to get draw.

Cheers.

Kd1 Rh2/ Ke1 Rxg2/ Kf1 Rh2/ Kg1 Rh3/ Kg2 Rh8 /f3 and there is a perfect fortress.
A classic beauty.

Engine programmers are generally not interested in dealing with this type of positions, and that is a pity. I wish I have time to pay attention to it because it is a very interesting "artificial intelligence" problem.

Miguel

The question is if it is the only way to draw.

I am not sure because I do not see improving score for black with stockfish1.9 and the score is 2.26 for black both at depth 36 and at depth 51
I do not see a clear winning plan for black to win with the advantage of rook against bihsop and pawn after Bf3 Rf8 Bg4 Rxf2 even after black capture the pawn g3.

New game
[D]7r/p3k3/2p5/1pPp4/3P4/PP4P1/3P1PB1/2K5 w - - 0 1

Analysis by Stockfish 1.9 JA:

1.Kc1-c2
² (0.32) Depth: 1 00:00:00
1.f2-f4 Rh8-h2
= (-0.12) Depth: 2 00:00:00
1.Kc1-c2 Ke7-e6
² (0.28) Depth: 2 00:00:00
1.Kc1-c2 Rh8-h2 2.Bg2-f3 Rh2xf2
µ (-0.96) Depth: 3 00:00:00
1.f2-f3 Rh8-h2 2.Bg2-f1
³ (-0.44) Depth: 3 00:00:00
1.f2-f3 Rh8-h2 2.Bg2-f1 Ke7-e6
³ (-0.48) Depth: 4 00:00:00
1.f2-f3 Rh8-h2 2.a3-a4 Rh2xg2 3.a4xb5 Rg2xg3 4.b5xc6 Rg3xf3
-+ (-3.31) Depth: 5 00:00:00
1.Kc1-b2 Rh8-h2 2.Bg2-f3 Rh2xf2 3.Bf3-g4 Rf2xd2+ 4.Kb2-c3
-+ (-1.53) Depth: 5 00:00:00
1.Kc1-c2 Rh8-h2 2.Bg2-f1 Rh2xf2 3.Bf1-d3
µ (-1.13) Depth: 5 00:00:00
1.Kc1-c2 Rh8-h2 2.Bg2-f3 Rh2xf2 3.Bf3-g4 Rf2-h2
µ (-0.88) Depth: 6 00:00:00 3kN
1.Kc1-c2 Rh8-h2 2.Bg2-f3 Rh2xf2 3.Bf3-g4 b5-b4 4.a3xb4 Rf2-g2 5.Bg4-f5 Rg2xg3
µ (-1.09) Depth: 7 00:00:00 6kN
1.Kc1-c2 Rh8-h2 2.Bg2-f3 Rh2xf2 3.Bf3-h5 Rf2-g2 4.g3-g4 Rg2-g3 5.a3-a4 b5xa4 6.b3xa4
µ (-1.01) Depth: 8 00:00:00 9kN
1.Kc1-c2 Rh8-h2 2.Bg2-f3 Rh2xf2 3.Bf3-h5 Rf2-g2 4.g3-g4 Rg2-g3 5.a3-a4 b5xa4 6.b3xa4 Rg3-a3 7.g4-g5 Ra3xa4
µ (-1.09) Depth: 9 00:00:00 16kN
1.Kc1-c2 Rh8-h2 2.Bg2-f3 Rh2xf2 3.Bf3-h5 Rf2-g2 4.g3-g4 Rg2-g3 5.a3-a4 b5xa4 6.b3xa4 Rg3-a3 7.g4-g5 Ra3xa4 8.Kc2-c3 Ra4-a3+ 9.Kc3-b4
µ (-1.09) Depth: 10 00:00:01 21kN
1.Kc1-c2 Rh8-h2 2.Bg2-f3 Rh2xf2 3.Bf3-d1 Rf2-h2 4.g3-g4 Ke7-f6 5.Kc2-c3 Rh2-h3+ 6.d2-d3 Kf6-g5 7.Kc3-d2 Kg5-f4 8.b3-b4 Rh3-h1
µ (-1.13) Depth: 11 00:00:01 59kN
1.Kc1-c2 Rh8-h2 2.Bg2-f3 Rh2xf2 3.Bf3-h5 Rf2-g2 4.g3-g4 Rg2-g3 5.a3-a4 b5xa4 6.b3xa4 Rg3-a3 7.g4-g5 Ra3xa4 8.Kc2-c3 Ra4-a3+ 9.Kc3-b4 Ra3-a1
µ (-1.09) Depth: 12 00:00:01 76kN
1.Kc1-c2 Rh8-h2 2.Bg2-f3 Rh2xf2 3.Bf3-d1 Rf2-h2 4.g3-g4 Ke7-f6 5.Kc2-c3 Rh2-h3+ 6.d2-d3 Kf6-g5 7.Kc3-d2 Kg5-f4 8.b3-b4 Rh3-h1
µ (-1.13) Depth: 13 00:00:01 100kN
1.Kc1-c2 Rh8-h2 2.Bg2-f3 Rh2xf2 3.Bf3-d1 Rf2-h2 4.g3-g4 Ke7-f6 5.Kc2-c3 Rh2-h3+ 6.d2-d3 Kf6-g5 7.Kc3-d2 Kg5-f4 8.Kd2-c3 Rh3-h1 9.Bd1-e2 Rh1-h2
µ (-1.17) Depth: 14 00:00:01 136kN
1.Kc1-c2 Rh8-h2 2.Bg2-f3 Rh2xf2 3.Bf3-d1 Rf2-h2 4.g3-g4 Ke7-f6 5.Kc2-c3 Rh2-h3+ 6.d2-d3 a7-a5 7.Bd1-e2 Kf6-g5 8.Be2-f1 Rh3-h2
µ (-1.25) Depth: 15 00:00:01 224kN
1.Kc1-c2 Rh8-h2 2.Bg2-f3 Rh2xf2 3.Bf3-d1 Rf2-h2 4.g3-g4 Ke7-f6 5.Kc2-c3 Rh2-h3+ 6.d2-d3 a7-a5 7.Bd1-e2 Kf6-g5 8.Kc3-d2 Rh3-h1 9.Kd2-c3 Rh1-h2 10.Kc3-d2 b5-b4 11.a3xb4 a5xb4
µ (-1.25) Depth: 15 00:00:01 270kN
1.Kc1-c2 Rh8-h2 2.Bg2-f3 Rh2xf2 3.Bf3-d1 Rf2-h2 4.g3-g4 Ke7-f6 5.Kc2-c3 Rh2-h3+ 6.d2-d3 a7-a5 7.Bd1-e2 Kf6-g5 8.Kc3-d2 Rh3-h1 9.Kd2-c3 Rh1-h2 10.Kc3-d2 b5-b4 11.a3xb4 a5xb4
µ (-1.25) Depth: 16 00:00:01 319kN
1.Kc1-c2 Rh8-h2 2.Bg2-f3 Rh2xf2 3.Bf3-d1 Rf2-h2 4.g3-g4 Ke7-f6 5.Kc2-c3 Kf6-g5 6.a3-a4 b5xa4 7.b3xa4 Rh2-h1 8.Bd1-e2 Rh1-a1 9.Kc3-b4 Ra1-a2
µ (-1.33) Depth: 17 00:00:01 584kN
1.Kc1-c2 Rh8-h2 2.Bg2-f3 Rh2xf2 3.Bf3-d1 Rf2-h2 4.g3-g4 Ke7-f6 5.Kc2-c3 Kf6-g5 6.Kc3-c2 a7-a5 7.a3-a4 b5xa4 8.b3xa4 Rh2-h3 9.d2-d3 Rh3-h2+ 10.Kc2-b3 Rh2-d2
µ (-1.37) Depth: 17 00:00:01 690kN
1.Kc1-c2 Rh8-h2 2.Bg2-f3 Rh2xf2 3.Bf3-d1 Rf2-h2 4.g3-g4 Ke7-f6 5.Kc2-c3 Kf6-g5 6.Kc3-c2 a7-a5 7.a3-a4 b5xa4 8.b3xa4 Rh2-h3 9.d2-d3 Rh3-h2+ 10.Kc2-b3 Rh2-d2
-+ (-1.49) Depth: 18 00:00:02 1158kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.b3-b4 Rf2-g2 4.g3-g4 Ke7-f6 5.a3-a4 a7-a6 6.a4xb5 a6xb5 7.Kc1-c2 Kf6-g5 8.Bd1-f3 Rg2-h2 9.Kc2-d3 Kg5-f4 10.Bf3-e2 Rh2-h3+ 11.Kd3-c2 Rh3-h2
µ (-1.37) Depth: 18 00:00:02 1320kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.b3-b4 Rf2-g2 4.g3-g4 Ke7-f6 5.a3-a4 a7-a6 6.a4xb5 a6xb5 7.Kc1-c2 Kf6-g5 8.Bd1-f3 Rg2-h2 9.Kc2-d3 Kg5-f4 10.Bf3-e2 Rh2-h3+ 11.Kd3-c2 Rh3-a3
-+ (-1.45) Depth: 19 00:00:03 1427kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Kc1-c2 Rf2-h2 4.g3-g4 Ke7-f6 5.a3-a4 b5xa4 6.b3xa4 Rh2-h3 7.d2-d3 Rh3-h2+ 8.Kc2-c3 Rh2-a2 9.Kc3-b3 Ra2-a1 10.Bd1-e2 Kf6-g5 11.Be2-f3 Kg5-f4 12.Bf3-e2 Ra1-e1
µ (-1.29) Depth: 19 00:00:03 1657kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.Bh5-d1 Rh2-h3 5.g3-g4 Rh3-d3 6.Bd1-c2 Rd3xd4 7.Bc2-f5 Rd4-f4 8.Kc1-c2 Rf4-f1 9.Kc2-c3 Rf1-f3+ 10.Kc3-c2 Rf3-g3 11.d2-d4 Rg3-h3
µ (-1.37) Depth: 19 00:00:03 1771kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.Bh5-d1 Rh2-h3 5.g3-g4 Rh3-d3 6.Bd1-c2 Rd3xd4 7.Bc2-f5 Rd4-f4 8.Kc1-c2 Rf4-f3 9.a3-a4 b5xa4 10.b3xa4 Rf3-h3
-+ (-1.45) Depth: 20 00:00:04 2102kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.Bh5-d1 Rh2-h3 5.g3-g4 Rh3-d3 6.g4-g5 Rd3xd4 7.Kc1-c2 Rd4-h4 8.g5-g6 Rh4-h2 9.a3-a4 b5xa4 10.b3xa4 Ke7-f6
-+ (-1.53) Depth: 20 00:00:05 2510kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.Bh5-d1 Rh2-h3 5.g3-g4 Rh3-d3 6.Bd1-c2 Rd3xd4 7.Bc2-f5 Rd4-f4 8.Kc1-c2 a7-a5 9.Kc2-c3 b5-b4+ 10.a3xb4 a5xb4+ 11.Kc3-d3 Rf4-f3+ 12.Kd3-c2 Rf3-h3 13.g4-g5 Rh3-h5
-+ (-1.69) Depth: 20 00:00:07 3096kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.Bh5-d1 Rh2-h3 5.g3-g4 Rh3-d3 6.Bd1-c2 Rd3xd4 7.Bc2-f5 Rd4-f4 8.Kc1-c2 a7-a5 9.Kc2-d3 Rf4-f3+ 10.Kd3-c2 Rf3-h3 11.Bf5-d3 Rh3-g3 12.Bd3-f5 Rg3-f3 13.Bf5-d3 Rf3-f4 14.g4-g5 Rf4-g4 15.g5-g6 Ke7-f6
-+ (-1.65) Depth: 20 00:00:08 3532kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.Bh5-d1 Rh2-h3 5.g3-g4 Rh3-d3 6.Kc1-c2 Rd3xd4 7.Kc2-c3 Rd4-e4 8.g4-g5 a7-a5 9.Kc3-d3 Re4-e5
-+ (-1.81) Depth: 21 00:00:09 4640kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-b1 a7-a6 8.b3-b4 Ke7-d8 9.Kb1-c1 Rg2-a2 10.Bh5-g6 a6-a5 11.b4xa5 Ra2xa3 12.Kc1-d2 Ra3xa5 13.Bg6-f5 Ra5-a2+ 14.Kd2-c3 Ra2-f2 15.Kc3-b4 Kd8-e7
-+ (-1.73) Depth: 22 00:00:10 6007kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 a7-a5 8.Kc1-b1 a5-a4 9.b3xa4 b5xa4 10.g4-g5 Rg2xg5 11.Bh5-d1 Rg5-g1 12.Kb1-c2 Ke7-d7 13.Kc2-d2 Kd7-c7 14.Bd1xa4 Rg1-a1 15.Kd2-e3 Ra1xa3 16.Ba4-d1
-+ (-1.85) Depth: 23 00:00:11 7374kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 a7-a5 8.Kc1-b1 a5-a4 9.b3xa4 b5xa4 10.g4-g5 Rg2xg5 11.Bh5-d1 Rg5-g1 12.Kb1-c2 Ke7-d7 13.Kc2-d2 Kd7-c7 14.Bd1xa4 Rg1-a1 15.Ba4-d1 Ra1xa3 16.Bd1-g4
-+ (-1.69) Depth: 24 00:00:12 8127kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 a7-a5 8.Kc1-b1 a5-a4 9.b3xa4 b5xa4 10.g4-g5 Rg2xg5 11.Bh5-d1 Rg5-g1 12.Kb1-c2 Ke7-d7 13.Kc2-d2 Kd7-c7 14.Kd2-c2 Rg1-h1 15.Kc2-d2 Kc7-d7 16.Bd1-g4+ Kd7-e7
-+ (-1.77) Depth: 24 00:00:12 8225kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 a7-a5 8.Kc1-b1 a5-a4 9.b3xa4 b5xa4 10.g4-g5 Rg2xg5 11.Bh5-d1 Rg5-g1 12.Kb1-c2 Ke7-d7 13.Kc2-d2 Kd7-c7 14.Kd2-c2 Rg1-h1 15.Kc2-d2 Kc7-d7 16.Bd1-g4+ Kd7-e7
-+ (-1.73) Depth: 25 00:00:12 9642kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 a7-a5 8.Kc1-b1 a5-a4 9.b3xa4 b5xa4 10.g4-g5 Rg2-d2 11.Bh5-g6 Rd2-h2 12.Bg6-f5 Rh2-g2 13.g5-g6 Rg2-g5
-+ (-1.81) Depth: 26 00:00:13 11285kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Kc1-c2 Rf2-h2 4.g3-g4 Ke7-f6 5.Kc2-c1 Kf6-g5 6.Kc1-c2 Kg5-f4 7.a3-a4 b5xa4 8.b3xa4 Rh2-h1 9.a4-a5 Kf4-e4 10.g4-g5 Rh1-g1 11.d2-d3+ Ke4xd4
-+ (-1.89) Depth: 26 00:00:16 13829kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 a7-a5 8.Kc1-b1 a5-a4 9.b3xa4 b5xa4 10.g4-g5 Rg2-d2 11.Bh5-g6 Rd2-h2 12.Kb1-c1 Rh2-g2 13.Bg6-h5 Rg2xg5 14.Bh5-d1 Rg5-g2 15.Bd1xa4 Ke7-d7 16.Ba4-d1
-+ (-1.73) Depth: 26 00:00:19 17573kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 a7-a5 8.Kc1-b1 a5-a4 9.b3xa4 b5xa4 10.g4-g5 Rg2-d2 11.Bh5-g6 Rd2-h2 12.Kb1-c1 Rh2-g2 13.Bg6-h5 Rg2xg5 14.Bh5-d1 Rg5-g1 15.Kc1-d2 Ke7-d7 16.Bd1xa4 Rg1-a1
-+ (-1.81) Depth: 27 00:00:19 18515kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 a7-a5 8.Kc1-b1 a5-a4 9.b3xa4 b5xa4 10.g4-g5 Rg2-d2 11.Bh5-g6 Rd2-h2 12.Kb1-c1 Rh2-h8 13.Kc1-b2 Rh8-g8 14.Bg6-h5 Rg8xg5 15.Bh5-d1 Rg5-g2+ 16.Kb2-c3 Rg2-a2
-+ (-1.73) Depth: 27 00:00:21 19891kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 a7-a5 8.Kc1-b1 a5-a4 9.b3xa4 b5xa4 10.g4-g5 Rg2-d2 11.Bh5-g6 Rd2-h2 12.Kb1-c1 Rh2-a2 13.Bg6-h5 Ra2xa3 14.Bh5-d1 Ra3xd3 15.Bd1xa4 Rd3xd4 16.Ba4xc6 Rd4-c4+
-+ (-1.81) Depth: 28 00:00:21 20684kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.a3-a4 b5xa4 4.b3xa4 a7-a5 5.Kc1-c2 Rf2-g2 6.g3-g4 Ke7-f6 7.Kc2-c3 Rg2-g3+ 8.d2-d3 Rg3-g2 9.Bd1-f3 Rg2-h2 10.Kc3-b3 Rh2-h3 11.Bf3-e2 Rh3-e3
-+ (-1.89) Depth: 28 00:00:23 22313kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.a3-a4 b5xa4 7.b3xa4 Rg3-a3 8.Bh5-g6 Ra3xa4 9.Kc2-c3 Ra4-a3+ 10.Kc3-b4 Ra3-f3 11.Bg6-f5 Rf3-f4 12.Kb4-c3 a7-a5 13.d2-d3 a5-a4
-+ (-2.06) Depth: 28 00:00:26 25952kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-d1 a7-a6 8.b3-b4 Rg2-a2 9.Bh5-g6 Ra2xa3 10.Kd1-c2 a6-a5 11.b4xa5 Ra3xa5 12.Kc2-b3 Ra5-a4 13.Kb3-c3 Ra4-a3+ 14.Kc3-c2 Ra3-a2+ 15.Kc2-c3 Ra2-a7 16.Kc3-c2 Ra7-a1
-+ (-2.06) Depth: 28 00:00:29 30282kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 Rg2-a2 8.Bh5-g6 Ra2xa3 9.Kc1-b2 Ra3-a6 10.Bg6-f5
-+ (-1.73) Depth: 29 00:00:32 33278kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 a7-a5 8.Kc1-b1 Rg2-g1+ 9.Kb1-c2 Ke7-d8 10.Kc2-d2 Rg1-a1 11.Kd2-c2 Ra1-a2+ 12.Kc2-b1 Ra2-g2 13.Kb1-c1 a5-a4 14.b3xa4 b5xa4 15.g4-g5 Rg2xg5 16.Bh5-d1 Rg5-g1
-+ (-1.85) Depth: 29 00:00:32 34191kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 Ke7-d8 8.Kc1-b1 a7-a6 9.Kb1-c1 Kd8-e7 10.Kc1-b1 a6-a5 11.Kb1-c1 Ke7-d8 12.Kc1-b1 a5-a4 13.b3xa4 b5xa4 14.g4-g5 Rg2-d2 15.g5-g6 Rd2xd3 16.g6-g7 Rd3-g3
-+ (-1.93) Depth: 30 00:00:38 40258kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 Ke7-d8 8.Kc1-b1 a7-a6 9.Kb1-c1 Kd8-e7 10.Kc1-b1 a6-a5 11.Kb1-c1 Ke7-d8 12.Kc1-b1 a5-a4 13.b3xa4 b5xa4 14.g4-g5 Rg2-d2 15.g5-g6 Rd2xd3 16.g6-g7 Rd3-g3
-+ (-2.14) Depth: 31 00:00:48 50949kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 Ke7-d8 8.Kc1-b1 a7-a6 9.Kb1-c1 Kd8-e7 10.Kc1-b1 a6-a5 11.Kb1-c1 Ke7-d8 12.Kc1-b1 a5-a4 13.b3xa4 b5xa4 14.g4-g5 Rg2-d2 15.Bh5-g6 Kd8-e7 16.Bg6-f5 Rd2-g2
-+ (-2.22) Depth: 31 00:00:58 63138kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 Ke7-d8 8.Kc1-b1 a7-a6 9.Kb1-c1 Kd8-e7 10.Kc1-b1 a6-a5 11.Kb1-c1 Ke7-d8 12.Kc1-d1 Rg2-b2 13.g4-g5 Rb2-g2 14.a3-a4 b5xa4 15.b3xa4 Rg2xg5 16.Bh5-e2 Kd8-e7
-+ (-2.22) Depth: 32 00:01:04 69386kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 Ke7-d8 8.Kc1-b1 a7-a6 9.Kb1-c1 Kd8-e7 10.Kc1-b1 a6-a5 11.Kb1-c1 Ke7-d8 12.Kc1-d1 Rg2-b2 13.g4-g5 Rb2-g2 14.Bh5-f3 Rg2xg5 15.Kd1-d2 Rg5-g3 16.Bf3-d1 Rg3-g2+
-+ (-2.18) Depth: 33 00:01:15 79543kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 Ke7-d8 8.Kc1-b1 a7-a6 9.Kb1-c1 Kd8-e7 10.Kc1-b1 a6-a5 11.Kb1-c1 Ke7-d8 12.Kc1-d1 Rg2-b2 13.g4-g5 Rb2-g2 14.Bh5-f3 Rg2xg5 15.Kd1-d2 Rg5-g3 16.Bf3-e2 Rg3-g2
-+ (-2.18) Depth: 34 00:01:21 87289kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 Ke7-d8 8.Kc1-b1 a7-a6 9.b3-b4 Kd8-e7 10.Kb1-c1 Rg2-a2 11.Bh5-g6 a6-a5 12.b4xa5 Ra2xa3 13.Kc1-c2 Ra3xa5 14.Bg6-f5 Ra5-a2+ 15.Kc2-c3 Ra2-a3+ 16.Kc3-c2 Ra3-a5
-+ (-2.10) Depth: 35 00:01:29 96171kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 Ke7-d8 8.Kc1-d1 Rg2-b2 9.g4-g5 Rb2-g2 10.g5-g6 Rg2-g5 11.Bh5-f3 Rg5xg6 12.a3-a4 b5xa4 13.b3xa4 Kd8-e7 14.Kd1-d2 Rg6-g1 15.Bf3-e2 Rg1-h1 16.Be2-d1 a7-a5
-+ (-2.22) Depth: 35 00:01:32 100154kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-h3 5.Kc1-c2 Rh3-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 Ke7-d8 8.Kc1-d1 Rg2-b2 9.b3-b4 Rb2-g2 10.Kd1-e1 Kd8-e7 11.Ke1-d1 Rg2-a2 12.Bh5-g6 Ra2xa3 13.Kd1-c2 a7-a5 14.b4xa5 Ra3xa5 15.Kc2-c3 Ra5-a7 16.Kc3-b4 Ra7-a8
-+ (-2.26) Depth: 36 00:02:03 135779kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-g2 5.Kc1-c2 Rg2-g3 6.d2-d3 Rg3-g2+ 7.Kc2-c1 a7-a5 8.Kc1-b1 Ke7-d8 9.Kb1-c1 Kd8-c7 10.Kc1-d1 Rg2-b2 11.g4-g5 Rb2-g2 12.g5-g6 Rg2-g5 13.Bh5-f3 Rg5xg6 14.Kd1-d2 Kc7-d8 15.a3-a4 b5xa4 16.b3xa4 Rg6-g5
-+ (-2.30) Depth: 37 00:03:06 196213kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.g3-g4 Rh2-g2 5.Kc1-c2 Rg2-g3 6.d2-d3 Rg3-g2+
-+ (-2.38) Depth: 38 00:04:27 280460kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.Bh5-d1 Rh2-h1 5.Kc1-c2 Rh1-h3 6.g3-g4 Ke7-f6 7.Kc2-b2 Rh3-g3 8.Kb2-c2 Kf6-g5 9.Bd1-e2 Kg5-f4 10.Be2-d3 Rg3xg4 11.b3-b4 Kf4-g5 12.a3-a4 a7-a6 13.Kc2-c3 Kg5-f4 14.a4-a5 Rg4-g3 15.Kc3-c2 Rg3-g2 16.Kc2-d1 Rg2-g1+
-+ (-2.30) Depth: 38 00:05:37 352932kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-h5 Rf2-h2 4.Bh5-d1 Rh2-g2 5.g3-g4 Ke7-f6 6.b3-b4 Rg2-g1 7.Kc1-c2 Rg1-e1 8.Kc2-c1 Kf6-g5 9.Kc1-c2 Kg5-f4 10.d2-d3 Re1-h1 11.Kc2-d2 Rh1-h2+ 12.Kd2-c1 Rh2-g2 13.a3-a4 a7-a6 14.Kc1-b1 Kf4-e3 15.a4xb5 a6xb5
-+ (-2.38) Depth: 39 00:06:25 404721kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-c2 Rf2-f3 4.Kc1-b2 Rf3xg3 5.b3-b4 Ke7-d7 6.Bc2-f5+ Kd7-d8 7.Bf5-c2 Kd8-c7 8.Bc2-f5 a7-a6 9.Bf5-c2 Rg3-f3 10.Bc2-g6 Kc7-d8 11.Bg6-c2 Kd8-d7 12.Bc2-g6 Kd7-d8
-+ (-2.22) Depth: 39 00:07:35 474513kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-c2 Rf2-f3 4.Kc1-b2 Rf3xg3 5.b3-b4 Ke7-d7 6.Bc2-f5+ Kd7-d8 7.Bf5-c2 Kd8-c7 8.Bc2-f5 a7-a6 9.Bf5-c2 Rg3-f3 10.Bc2-g6 Kc7-d8 11.Bg6-c2 Kd8-d7 12.Bc2-g6 Kd7-e7 13.Bg6-c2 Ke7-e6 14.Bc2-g6 Rf3-f8 15.Bg6-h5 Rf8-g8 16.Kb2-c2 Ke6-f5
-+ (-2.22) Depth: 39 00:07:37 477204kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-c2 Rf2-f3 4.Kc1-b2 Rf3xg3 5.b3-b4 Ke7-d7 6.Bc2-f5+ Kd7-d8 7.Bf5-c2 Kd8-c7 8.Bc2-f5 a7-a6 9.Bf5-c2 Rg3-f3 10.Bc2-g6 Kc7-d8 11.Bg6-c2 Kd8-d7 12.Bc2-g6 Kd7-e7 13.Bg6-c2 Ke7-e6 14.Bc2-g6 Rf3-f8 15.Kb2-c3 Rf8-g8 16.Bg6-c2 Rg8-g3+
-+ (-2.22) Depth: 40 00:08:04 499730kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-c2 Rf2-f3 4.Kc1-b2 Rf3xg3 5.b3-b4 Ke7-d7 6.Bc2-f5+ Kd7-d8 7.Bf5-c2 Kd8-c7 8.Bc2-f5 a7-a6 9.Bf5-c2 Rg3-f3 10.Bc2-g6 Kc7-d8 11.Bg6-c2 Kd8-d7 12.Bc2-g6 Kd7-e7 13.Bg6-c2 Ke7-e6 14.Bc2-g6 Rf3-f8 15.Kb2-c3 Rf8-g8 16.Bg6-c2 Rg8-g3+
-+ (-2.26) Depth: 41 00:08:46 544112kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-c2 Rf2-f3 4.Kc1-b2 Rf3xg3 5.b3-b4 Ke7-d7 6.Bc2-f5+ Kd7-d8 7.Bf5-c2 Kd8-c7 8.Bc2-f5 a7-a6 9.Bf5-c2 Rg3-f3 10.Bc2-g6 Kc7-d8 11.Bg6-c2 Kd8-d7 12.Bc2-g6 Kd7-e7 13.Bg6-c2 Ke7-e6 14.Bc2-g6 Rf3-f8 15.Kb2-c3 Rf8-g8 16.Bg6-c2 Rg8-g3+
-+ (-2.26) Depth: 42 00:11:17 691097kN
1.Bg2-f3 Rh8-f8 2.Bf3-d1 Rf8xf2 3.Bd1-c2 Rf2-f3 4.Kc1-b2 Rf3xg3 5.b3-b4 Ke7-d7 6.Bc2-f5+ Kd7-d8 7.Bf5-c2 Kd8-c7 8.Bc2-f5 a7-a6 9.Bf5-c2 Rg3-f3 10.Bc2-g6 Kc7-d8 11.Bg6-c2 Kd8-d7 12.Bc2-g6 Kd7-e7 13.Bg6-c2 Ke7-e6 14.Bc2-g6 Rf3-f8 15.Kb2-c3 Rf8-g8 16.Bg6-c2 Rg8-g3+
-+ (-2.26) Depth: 43 00:12:12 745388kN
1.Bg2-f3 Rh8-f8 2.Bf3-g4 Rf8xf2 3.b3-b4 Rf2-g2 4.Bg4-f5 Rg2xg3 5.Kc1-b2 Rg3-f3 6.Bf5-g6 a7-a6 7.Bg6-c2 Ke7-e6 8.a3-a4 Rf3-h3 9.a4-a5 Ke6-f6 10.Bc2-b1 Kf6-g5 11.Bb1-c2 Rh3-g3 12.Bc2-h7 Kg5-f4 13.Kb2-c2 Rg3-h3 14.Bh7-d3 Kf4-g5 15.Kc2-c3 Rh3-g3 16.Kc3-c2 Rg3-g4
-+ (-2.26) Depth: 44 00:15:54 975783kN
1.Bg2-f3 Rh8-f8 2.Bf3-g4 Rf8xf2 3.b3-b4 Rf2-g2 4.Bg4-f5 Rg2xg3 5.Kc1-b2 Rg3-f3 6.Bf5-g6 a7-a6 7.Bg6-c2 Rf3-g3 8.Bc2-f5 Rg3-g5 9.Bf5-h7 Rg5-g4 10.Kb2-c3 Rg4-g3+ 11.Kc3-b2 Ke7-e6
-+ (-2.34) Depth: 45 00:17:07 1049853kN
1.Bg2-f3 Rh8-f8 2.Bf3-g4 Rf8xf2 3.b3-b4 Rf2-g2 4.Bg4-f5 Rg2xg3 5.Kc1-b2 Rg3-f3 6.Bf5-c2 Rf3-f4 7.Kb2-c3 Ke7-d7 8.Bc2-d1 Rf4-f1 9.Bd1-c2 Rf1-g1 10.Kc3-b2 Rg1-g3 11.Bc2-f5+ Kd7-c7 12.Bf5-h7 Rg3-g5 13.Kb2-c3 Kc7-d7 14.Bh7-c2 Rg5-g3+ 15.Kc3-b2 Kd7-e7 16.a3-a4 b5xa4
-+ (-2.30) Depth: 45 00:20:43 1274206kN
1.Bg2-f3 Rh8-f8 2.Bf3-g4 Rf8xf2 3.b3-b4 Rf2-g2 4.Bg4-f5 Rg2xg3 5.Kc1-b2 Rg3-f3 6.Bf5-c2 Rf3-f4 7.Kb2-c3 Ke7-d7 8.Bc2-d1 Rf4-f1 9.Bd1-c2 Rf1-g1 10.Kc3-b2 Rg1-g3 11.Bc2-f5+ Kd7-e7 12.Bf5-c2 Ke7-e6 13.a3-a4 a7-a6 14.a4-a5
-+ (-2.26) Depth: 46 00:26:39 1621524kN
1.Bg2-f3 Rh8-f8 2.Bf3-g4 Rf8xf2 3.b3-b4 Rf2-g2 4.Bg4-f5 Rg2xg3 5.Kc1-b2 Rg3-f3 6.Bf5-c2 Rf3-f4 7.Kb2-c3 Ke7-e6 8.a3-a4 b5xa4 9.Bc2xa4 Rf4-f3+ 10.d2-d3
-+ (-2.18) Depth: 47 00:31:00 1877008kN
1.Bg2-f3 Rh8-f8 2.Bf3-g4 Rf8xf2 3.b3-b4 Rf2-g2 4.Bg4-f5 Rg2xg3 5.Kc1-b2 Rg3-f3 6.Bf5-c2 Rf3-f4 7.Kb2-c3 Ke7-e6 8.Bc2-d1 Rf4-f1 9.Bd1-c2 Rf1-f3+ 10.Kc3-b2 Rf3-g3 11.Bc2-b1 Rg3-g2 12.Kb2-c3 Ke6-e7 13.Bb1-c2 Ke7-e6 14.Bc2-b1
-+ (-2.18) Depth: 47 00:31:54 1934333kN
1.Bg2-f3 Rh8-f8 2.Bf3-g4 Rf8xf2 3.b3-b4 Rf2-g2 4.Bg4-f5 Rg2xg3 5.Kc1-b2 a7-a6 6.Bf5-h7 Ke7-f6 7.Bh7-c2 Rg3-h3 8.a3-a4 Kf6-e7 9.a4-a5
-+ (-2.30) Depth: 48 00:34:32 2091878kN
1.Bg2-f3 Rh8-f8 2.Bf3-g4 Rf8xf2 3.b3-b4 Rf2-g2 4.Bg4-f5 Rg2xg3 5.Kc1-b2 Rg3-f3 6.Bf5-c2 Ke7-d7 7.Bc2-g6 a7-a6 8.Bg6-c2 Rf3-g3 9.Bc2-f5+ Kd7-e7 10.Bf5-c2 Ke7-e6 11.a3-a4 Ke6-f6 12.a4-a5
-+ (-2.26) Depth: 48 00:46:58 2871715kN
1.Bg2-f3 Rh8-f8 2.Bf3-g4 Rf8xf2 3.b3-b4 Rf2-g2 4.Bg4-f5 Rg2xg3 5.Kc1-b2 Rg3-f3 6.Bf5-c2 Ke7-d7 7.Bc2-g6 a7-a6 8.Bg6-c2 Rf3-g3 9.Bc2-f5+ Kd7-e7 10.Bf5-c2 Ke7-e6 11.a3-a4 Ke6-f6 12.a4-a5 Kf6-e6 13.Bc2-b1 Rg3-g1 14.Bb1-c2 Rg1-g2 15.Kb2-c3 Ke6-f6 16.Bc2-d3 Rg2-g3
-+ (-2.26) Depth: 49 00:50:54 3118620kN
1.Bg2-f3 Rh8-f8 2.Bf3-g4 Rf8xf2 3.b3-b4 Rf2-g2 4.Bg4-f5 Rg2xg3 5.Kc1-b2 Rg3-f3 6.Bf5-c2 Ke7-d7 7.Bc2-g6 a7-a6 8.Bg6-c2 Rf3-g3 9.Bc2-f5+ Kd7-e7 10.Bf5-c2 Ke7-e6 11.a3-a4 Ke6-f6 12.a4-a5 Kf6-e6 13.Bc2-b1 Rg3-g1 14.Bb1-c2 Rg1-g2 15.Kb2-c3 Ke6-f6 16.Bc2-d3 Rg2-g3
-+ (-2.26) Depth: 50 00:59:02 3614921kN
1.Bg2-f3 Rh8-f8 2.Bf3-g4 Rf8xf2 3.b3-b4 Rf2-g2 4.Bg4-f5 Rg2xg3 5.Kc1-b2 Rg3-f3 6.Bf5-c2 Ke7-d7 7.Bc2-b1
-+ (-2.26) Depth: 51 01:14:17 4509466kN

(, 04.10.2010)