stockfish pruning weakness

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Uri Blass
Posts: 10282
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

stockfish pruning weakness

Post by Uri Blass »

Here is a position when stockfish cannot see the win in a short time.

Intially I thought that maybe black has a fortress.
Note that it is possible to draw against stockfish with black at fast time control because stockfish has no plan to play with white.

The plan of white is simply to go with the king forward when black is in zugzwang

Houdini3 can easily see it and stockfish4 also can see it and has a score of 4.36 at depth 48 and fail high at depth 49 when the score goes up to more than 74 pawns

Latest stockfish is unable to see it
and I believe that the aggressive reductions prevent it to see it.

The aggressive reductions is probably one of the reasons that stockfish is relatively weaker than houdini against weak opponents and it is better to use less reductions at least for the side that has the advantage.


[D]1n6/8/2k5/2p5/P1P1K3/1PB5/8/8 w - - 0 52



Stockfish_14041708_x64_modern_sse42:
1/1 00:00 27 13,500 +3.68 Bc3-e5
2/2 00:00 116 58,000 +3.13 a4-a5 Nb8-a6
3/3 00:00 220 110,000 +3.26 a4-a5 Nb8-a6 Bc3-e5
4/4 00:00 361 180,500 +3.20 a4-a5 Nb8-a6 Bc3-e5 Na6-b4
5/5 00:00 962 481,000 +3.00 a4-a5 Nb8-a6 Bc3-e5 Na6-b4 Be5-f4
6/6 00:00 1,294 431,333 +3.18 a4-a5 Nb8-a6 Bc3-e5 Na6-b4 Be5-f4 Kc6-b7
7/9 00:00 2,937 979,000 +3.04 Bc3-e5 Nb8-d7 Be5-f4 Kc6-b6 Bf4-e3 Nd7-f6+ Ke4-d3 Nf6-g4 a4-a5+ Kb6xa5 Be3xc5
8/9 00:00 5,362 1,340,500 +3.24 a4-a5 Nb8-d7 Bc3-g7 Nd7-b8 Bg7-h6 Nb8-a6 Bh6-e3 Na6-b4
9/9 00:00 6,392 1,278,400 +3.21 a4-a5 Nb8-d7 Bc3-g7 Nd7-b8 Bg7-h6 Nb8-a6 Bh6-e3 Na6-c7 Ke4-d3
10/11 00:00 9,779 1,397,000 +3.21 a4-a5 Nb8-d7 Bc3-g7 Nd7-b8 Bg7-f8 Nb8-a6 Bf8-h6 Na6-b4 Bh6-f4 Kc6-b7 Bf4-e3 Nb4-c6 Be3xc5 Nc6xa5
11/14 00:00 13,008 1,626,000 +3.21 a4-a5 Nb8-d7 Bc3-g7 Nd7-b8 Bg7-f8 Nb8-a6 Bf8-h6 Na6-c7 Bh6-f4 Nc7-a6 Bf4-e3 Na6-c7 Be3-f4
12/14 00:00 15,206 1,689,555 +3.21 a4-a5 Nb8-d7 Bc3-g7 Nd7-b8 Bg7-f8 Nb8-a6 Bf8-h6 Na6-c7 Bh6-f4 Nc7-a6 Bf4-e3 Na6-c7 Be3-f4
13/14 00:00 18,462 1,678,363 +3.21 a4-a5 Nb8-d7 Bc3-g7 Nd7-b8 Bg7-f8 Nb8-a6 Bf8-h6 Na6-c7 Bh6-f4 Nc7-a6 Bf4-e3 Na6-c7 Be3-f4
14/16 00:00 22,932 1,911,000 +3.21 a4-a5 Nb8-d7 Bc3-g7 Nd7-b8 Bg7-f8 Nb8-a6 Bf8-h6 Na6-c7 Bh6-f4 Nc7-e6 Bf4-e3 Ne6-c7 Ke4-e5 Nc7-a6 Ke5-e4 Na6-c7
15/21 00:00 78,946 1,925,512 +3.13 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-b8 Bd2-f4 Nb8-a6 Ke5-e6 Na6-b4 Bf4-d6 Nb4-a6 Ke6-e5 Na6-b4
16/21 00:00 87,246 1,938,800 +3.17 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-b8 Bd2-f4 Nb8-a6 Ke5-e4 Na6-b4 Bf4-d2 Kc6-b7 Bd2xb4 c5xb4 Ke4-d5 Kb7-a6 c4-c5 Ka6xa5 Kd5-d6
17/21 00:00 92,882 1,895,551 +3.17 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-b8 Bd2-f4 Nb8-a6 Ke5-e4 Na6-b4 Bf4-d2 Kc6-b7 Bd2xb4 c5xb4 Ke4-d5 Kb7-a6 c4-c5 Ka6xa5 Kd5-d6
18/25 00:00 104,708 1,869,785 +3.13 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-b8 Bd2-f4 Nb8-a6 Ke5-e4 Na6-b4 Bf4-d2 Nb4-a6 Ke4-e5
19/25 00:00 118,912 1,858,000 +3.13 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-b8 Bd2-f4 Nb8-a6 Ke5-e4 Na6-b4 Bf4-d2 Nb4-a6 Bd2-c3 Na6-c7 Ke4-f4 Nc7-a6 Kf4-e5 Na6-c7 Bc3-d2 Nc7-a6 Ke5-e4
20/25 00:00 127,344 1,872,705 +3.13 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-b8 Bd2-f4 Nb8-a6 Ke5-e4 Na6-b4 Bf4-d2 Nb4-a6 Ke4-e3 Na6-b8 Bd2-c3 Nb8-a6 Ke3-d3 Na6-c7 Bc3-d2 Nc7-a6 Kd3-e4
21/25 00:00 129,948 1,883,304 +3.13 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-b8 Bd2-f4 Nb8-a6 Ke5-e4 Na6-b4 Bf4-d2 Nb4-a6 Ke4-e3 Na6-b8 Bd2-c3 Nb8-a6 Ke3-d3 Na6-c7 Bc3-d2 Nc7-a6 Kd3-e4
22/27 00:00 218,098 1,913,140 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-b8 Bd2-c3 Nb8-a6 Kf5-e4 Na6-c7 Bc3-e5 Nc7-a6 Be5-f4 Na6-b4 Bf4-d2 Nb4-a6 Bd2-f4
23/27 00:00 235,054 1,926,672 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-b8 Bd2-c3 Nb8-a6 Kf5-e4 Na6-c7 Bc3-e5 Nc7-a6 Be5-f4 Na6-b4 Bf4-e5 Nb4-a6
24/27 00:00 257,296 1,949,212 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-b8 Bd2-c3 Nb8-a6 Bc3-d2
25/27 00:00 279,274 1,980,666 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-b8 Bd2-c3 Nb8-a6 Bc3-d2
26/28 00:00 385,278 1,945,848 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-b8 Bd2-c3 Nb8-a6 Kf5-e4 Na6-b8 Bc3-e5 Nb8-a6 Be5-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke4-e5
27/28 00:00 416,033 1,962,419 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-b8 Bd2-c3 Nb8-a6 Kf5-e4 Na6-b8 Bc3-e5 Nb8-a6 Be5-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke4-e5
28/29 00:00 476,614 2,019,550 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Kf5-e5
29/30 00:00 528,971 2,050,275 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Kf5-e4 Na6-b4 Bf4-d2 Nb4-a6 Ke4-d3 Kc6-b7 Bd2-c3 Na6-c7 Kd3-e4 Kb7-c6 Bc3-e5 Nc7-a6 Be5-f4
30/36 00:00 590,804 2,080,295 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Kf5-e4 Na6-b4 Bf4-e5 Nb4-a6 Be5-f4
31/36 00:00 676,016 2,132,542 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Kf5-e4 Na6-b4 Bf4-e5 Nb4-a6 Be5-f4
32/36 00:00 774,549 2,181,828 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Kf5-e4 Na6-b4 Bf4-d2 Nb4-a6 Bd2-e3 Na6-b4 Ke4-f5 Nb4-c2 Kf5-e4 Nc2-a1 a5-a6 Na1xb3 a6-a7 Kc6-b7
33/36 00:00 915,344 2,227,114 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Kf5-e4 Na6-b4 Bf4-e5 Nb4-a6 Be5-c3 Na6-b8 Ke4-d3 Nb8-a6 Bc3-d2 Na6-b8 Bd2-c3
34/37 00:00 1,204,751 2,312,381 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Bf4-d2
35/40 00:01 1,834,487 2,382,450 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Bf4-e5 Na6-b4 Be5-g3 Nb4-d3 Kf5-e4 Nd3-c1 a5-a6 Nc1xb3 a6-a7 Kc6-b7
36/44 00:01 2,436,414 2,453,589 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Bf4-e5 Na6-b4 Kf5-e4 Nb4-a6 Be5-f4 Na6-b4 Bf4-e3 Nb4-a6 Be3-g5 Na6-c7 Bg5-e7 Nc7-a6 Be7-f6 Na6-b4 Bf6-e7 Nb4-a6
37/44 00:01 2,677,398 2,488,288 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Bf4-e5 Na6-b4 Kf5-e4 Nb4-a6 Be5-f4 Na6-b4 Bf4-e3 Nb4-a6 Be3-g5 Na6-c7 Bg5-e7 Nc7-a6 Be7-f6 Na6-b4 Ke4-e3 Kc6-d6 Bf6-c3 Nb4-a6 Ke3-d3 Kd6-c6 Bc3-d2 Na6-c7 Bd2-f4 Nc7-a6 Kd3-e4
38/44 00:01 2,997,290 2,527,225 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Bf4-e5 Na6-b4 Kf5-e4 Nb4-a6 Be5-g3 Na6-b4 Bg3-f4 Nb4-c2 Bf4-d2 Nc2-a1 b3-b4 c5xb4 Bd2xb4 Na1-c2 Bb4-e7 Kc6-b7
39/45 00:01 3,472,783 2,572,431 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Bf4-e5 Na6-b4 Kf5-e4 Nb4-a6 Be5-g3 Na6-b4 Bg3-f2 Nb4-a6 Bf2-h4 Na6-c7 Bh4-g3 Nc7-a6 Bg3-e5 Na6-b4 Be5-b2 Nb4-a6 Bb2-c3 Na6-c7 Bc3-d2 Nc7-a6 Bd2-e3 Na6-b4 Be3-f2
40/45 00:02 4,708,002 2,592,512 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Bf4-e5 Na6-b4 Be5-c3 Nb4-a6 Bc3-d2
41/45 00:02 5,052,842 2,600,536 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Bf4-e5 Na6-b4 Be5-c3 Nb4-a6 Kf5-e4 Kc6-d6 Bc3-e5+ Kd6-c6 Be5-c3
42/47 00:02 5,630,116 2,617,441 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Bf4-e5 Na6-b4 Be5-c3 Nb4-a6 Kf5-e4 Kc6-d6 Bc3-e5+ Kd6-c6 Be5-f4 Na6-b4 Bf4-e3 Nb4-a6 Ke4-f5 Na6-c7 Be3-f2 Nc7-a6 Kf5-e4 Na6-c7 Ke4-e5 Nc7-a6 Bf2-e3 Na6-b4 Be3-d2
43/47 00:02 5,744,899 2,618,458 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Bf4-e5 Na6-b4 Be5-c3 Nb4-a6 Kf5-e4 Kc6-d6 Bc3-e5+ Kd6-c6 Be5-f4 Na6-b4 Bf4-e3 Nb4-a6 Ke4-f5 Na6-c7 Be3-f2 Nc7-a6 Kf5-e4 Na6-c7 Ke4-e5 Nc7-a6 Bf2-e3 Na6-b4 Be3-d2
44/49 00:02 6,552,022 2,634,508 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Bf4-e5 Na6-b4 Be5-c3 Nb4-a6 Kf5-e4 Kc6-d6 Bc3-e5+ Kd6-c6 Be5-f4 Na6-b4 Bf4-e3 Nb4-a6 Ke4-f5 Na6-c7 Be3-f2 Nc7-a6 Kf5-e4 Na6-c7 Ke4-e5 Nc7-a6 Bf2-e3 Na6-c7 Ke5-f5 Nc7-a6 Kf5-e4 Na6-b4 Be3-d2 Nb4-a6 Ke4-e5
45/50 00:03 7,665,418 2,651,476 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Bf4-e5 Na6-b4 Be5-c3 Nb4-a6 Kf5-e4 Kc6-d6 Bc3-e5+ Kd6-c6 Be5-f4 Na6-b4 Bf4-e3 Nb4-a6 Be3-g5 Na6-b4 Bg5-e7 Nb4-a6 Ke4-e5 Na6-b4 Ke5-e4
46/57 00:08 23,397,999 2,983,297 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Bf4-e5 Na6-b4 Be5-c3 Nb4-a6 Kf5-e4 Kc6-d6 Bc3-e5+ Kd6-c6 Be5-f4 Na6-b4 Bf4-e3 Nb4-a6 Be3-g5 Na6-b4 Bg5-e7 Nb4-a6 Ke4-e5 Na6-b4 Ke5-f5 Nb4-a6 Kf5-e4 Na6-b4 Be7-f8 Nb4-a6 Bf8-h6 Na6-b4 Bh6-e3
47/57 00:08 24,573,324 2,985,460 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Bf4-e5 Na6-b4 Be5-c3 Nb4-a6 Kf5-e4 Kc6-d6 Bc3-e5+ Kd6-c6 Be5-f4 Na6-b4 Bf4-e3 Nb4-a6 Be3-g5 Na6-b4 Bg5-e7 Nb4-a6 Ke4-e5 Na6-b4 Ke5-f5 Nb4-a6 Kf5-e4 Na6-b4 Be7-f8 Nb4-a6 Bf8-h6 Na6-b4 Bh6-d2 Nb4-a6 Bd2-e3 Na6-b4 Be3-f2 Nb4-a6 Bf2-g3 Na6-b4 Bg3-e1 Nb4-a6 Be1-c3
48/57 00:09 26,489,912 2,986,124 +3.12 a4-a5 Nb8-a6 Bc3-d2 Na6-c7 Ke4-f5 Nc7-a6 Kf5-e5 Na6-c7 Bd2-e3 Nc7-a6 Be3-f4 Na6-b4 Bf4-d2 Nb4-a6 Ke5-f5 Na6-c7 Bd2-f4 Nc7-a6 Bf4-e5 Na6-b4 Be5-c3 Nb4-a6 Kf5-e4 Kc6-d6 Bc3-e5+ Kd6-c6 Be5-f4 Na6-b4 Bf4-e5 Nb4-a2 Ke4-d3 Na2-b4+ Kd3-d2 Kc6-b7 Kd2-e3 Kb7-c6 Be5-c3 Nb4-a6 Ke3-d3 Kc6-d6 Bc3-d2 Kd6-c6 Bd2-f4 Na6-b4+ Kd3-e2 Kc6-b7 Bf4-d2 Nb4-c6 Ke2-e3 Nc6-b8 Ke3-e4 Kb7-c6 Bd2-f4 Nb8-a6 Bf4-e5 Na6-b4 Be5-f6 Kc6-d6 Bf6-c3 Nb4-a6
49/58 00:16 47,403,001 2,986,768 +3.13 a4-a5 Nb8-a6 Bc3-e5 Na6-b4 Be5-f4 Nb4-c2 Ke4-d3 Nc2-b4+ Kd3-d2 Nb4-a6 Bf4-e3 Kc6-b7 Kd2-d3 Na6-b4+ Kd3-c3 Kb7-c6 Kc3-d2 Kc6-d6 Kd2-e2 Kd6-c6 Be3-d2 Nb4-a6 Ke2-d3 Kc6-d6 Kd3-e4 Kd6-c6 Bd2-f4 Na6-b4 Bf4-e3 Kc6-d6 Be3-d2 Nb4-a6 Bd2-f4+ Kd6-c6 Bf4-e3 Kc6-d6 Be3-d2
50/65 00:21 62,335,888 2,982,007 +3.13 a4-a5 Nb8-a6 Bc3-e5 Na6-b4 Be5-f4 Nb4-c2 Ke4-d3 Nc2-b4+ Kd3-d2 Nb4-a6 Bf4-e3 Kc6-b7 Kd2-d3 Na6-b4+ Kd3-c3 Kb7-c6 Kc3-d2 Kc6-d6 Kd2-e2 Kd6-c6 Be3-d2 Nb4-a6 Ke2-d3 Kc6-d6 Kd3-c3 Na6-b4 Bd2-f4+ Kd6-c6 Bf4-g5 Nb4-a2+ Kc3-d2 Na2-b4 Kd2-c3
51/65 00:24 72,718,119 3,020,859 +3.13 a4-a5 Nb8-a6 Bc3-e5 Na6-b4 Be5-f4 Nb4-c2 Ke4-d3 Nc2-b4+ Kd3-d2 Nb4-a6 Bf4-e3 Kc6-b7 Kd2-d3 Na6-b4+ Kd3-c3 Kb7-c6 Kc3-d2 Kc6-d6 Kd2-e2 Kd6-c6 Be3-d2 Nb4-a6 Ke2-d3 Kc6-d6 Kd3-c3 Na6-b4 Bd2-f4+ Kd6-c6 Bf4-g5 Nb4-a2+ Kc3-d2 Na2-b4 Kd2-e3 Kc6-b7 Bg5-f6 Kb7-c6 Ke3-e4 Kc6-d6 Bf6-c3 Nb4-a6 Bc3-e5+ Kd6-c6 Be5-f4 Na6-b4 Bf4-e3 Nb4-a6 Be3-f2 Na6-b4 Bf2-e1 Nb4-a6 Ke4-d3 Na6-c7 Be1-d2 Nc7-a6 Bd2-e3 Kc6-d7 Be3-f4 Kd7-c6 Bf4-e5 Na6-b4+ Kd3-e4 Nb4-a6
52/65 00:27 84,364,687 3,065,688 +3.13 a4-a5 Nb8-a6 Bc3-e5 Na6-b4 Be5-f4 Nb4-c2 Ke4-d3 Nc2-b4+ Kd3-d2 Nb4-a6 Bf4-e3 Kc6-b7 Kd2-d3 Na6-b4+ Kd3-c3 Kb7-c6 Kc3-d2 Kc6-d6 Kd2-e2 Kd6-c6 Be3-d2 Nb4-a6 Ke2-d3 Kc6-d6 Kd3-c3 Na6-b4 Bd2-f4+ Kd6-c6 Bf4-e3 Nb4-a2+ Kc3-d2 Na2-b4 Be3-f4
53/65 00:31 94,885,966 3,077,715 +3.13 a4-a5 Nb8-a6 Bc3-e5 Na6-b4 Be5-f4 Nb4-c2 Ke4-d3 Nc2-b4+ Kd3-d2 Nb4-a6 Bf4-e3 Kc6-b7 Kd2-d3 Na6-b4+ Kd3-c3 Kb7-c6 Kc3-d2 Kc6-d6 Kd2-e2 Kd6-c6 Be3-d2 Nb4-a6 Ke2-d3 Kc6-d6 Kd3-c3 Na6-b4 Bd2-f4+ Kd6-c6 Bf4-e3 Nb4-a2+ Kc3-c2 Na2-b4+ Kc2-b2 Nb4-a6 Kb2-c1 Na6-b4 Be3-d2 Nb4-a6 Kc1-c2 Kc6-c7 Kc2-c3 Na6-b4 Kc3-b2 Nb4-c6 Bd2-f4+ Kc7-b7 Bf4-d6 Nc6-b4 Kb2-c3 Kb7-c6 Bd6-b8 Nb4-a2+ Kc3-d2 Na2-b4 Bb8-f4
54/66 00:39 118,800,859 3,048,129 +3.13 a4-a5 Nb8-a6 Bc3-e5 Na6-b4 Be5-f4 Nb4-c2 Ke4-d3 Nc2-b4+ Kd3-d2 Nb4-a6 Bf4-e3 Kc6-b7 Kd2-d3 Na6-b4+ Kd3-c3 Kb7-c6 Kc3-d2 Kc6-d6 Kd2-e2 Kd6-c6 Be3-d2 Nb4-a6 Ke2-d3 Kc6-d6 Kd3-c3 Na6-b4 Bd2-f4+ Kd6-c6 Bf4-e3 Nb4-a2+ Kc3-c2 Na2-b4+ Kc2-b2 Nb4-a6 Kb2-c1 Na6-b4 Be3-d2 Nb4-a6 Kc1-c2 Na6-b8 Kc2-d3 Nb8-a6 Bd2-e1 Na6-c7 Be1-d2 Nc7-a6
55/66 00:50 158,063,908 3,174,229 +3.13 a4-a5 Nb8-a6 Bc3-e5 Na6-b4 Be5-f4 Nb4-c2 Ke4-d3 Nc2-b4+ Kd3-d2 Nb4-a6 Bf4-e3 Kc6-b7 Kd2-d3 Na6-b4+ Kd3-c3 Kb7-c6 Kc3-d2 Kc6-d6 Kd2-e2 Kd6-c6 Be3-d2 Nb4-a6 Ke2-d3 Kc6-d6 Kd3-c3 Na6-b4 Bd2-f4+ Kd6-c6 Bf4-e3 Nb4-a2+ Kc3-c2 Na2-b4+ Kc2-d2
56/66 00:59 195,449,097 3,281,494 +3.13 a4-a5 Nb8-a6 Bc3-e5 Na6-b4 Be5-f4 Nb4-c2 Ke4-d3 Nc2-b4+ Kd3-d2 Nb4-a6 Bf4-e3 Kc6-b7 Kd2-d3 Na6-b4+ Kd3-c3 Kb7-c6 Kc3-d2 Kc6-d6 Kd2-e2 Kd6-c6 Be3-d2 Nb4-a6 Ke2-d3 Kc6-d6 Kd3-c3 Na6-b4 Bd2-f4+ Kd6-c6 Bf4-e3 Nb4-a2+ Kc3-c2 Na2-b4+ Kc2-c1 Kc6-c7 Be3-d2 Nb4-a6 Kc1-c2 Kc7-c6 Bd2-e1 Na6-c7 Kc2-d3 Nc7-a6 Be1-d2
57/71 01:28 310,969,929 3,525,616 +3.13 a4-a5 Nb8-a6 Bc3-e5 Na6-b4 Be5-f4 Nb4-c2 Ke4-d3 Nc2-b4+ Kd3-d2 Nb4-a6 Bf4-e3 Kc6-b7 Kd2-d3 Na6-b4+ Kd3-c3 Kb7-c6 Kc3-d2 Kc6-d6 Kd2-e2 Kd6-c6 Be3-d2 Nb4-a6 Ke2-d3 Kc6-d6 Kd3-c3 Na6-b4 Bd2-f4+ Kd6-c6 Bf4-e3 Nb4-a2+ Kc3-c2 Na2-b4+ Kc2-d2
58/71 01:53 413,870,604 3,650,071 +3.13 a4-a5 Nb8-a6 Bc3-e5 Na6-b4 Be5-f4 Nb4-c2 Ke4-d3 Nc2-b4+ Kd3-d2 Nb4-a6 Bf4-e3 Kc6-b7 Kd2-d3 Na6-b4+ Kd3-c3 Kb7-c6 Kc3-d2 Kc6-d6 Kd2-e2 Kd6-c6 Be3-d2 Nb4-a6 Ke2-d3 Kc6-d6 Kd3-c3 Na6-b4 Bd2-f4+ Kd6-c6 Bf4-e3 Nb4-a2+ Kc3-c2 Na2-b4+ Kc2-b2 Kc6-d6 Be3-d2 Nb4-a6 Kb2-c2 Kd6-c6 Bd2-e1 Na6-c7 Kc2-d3 Nc7-a6 Be1-c3 Kc6-b7 Bc3-e5 Kb7-c6 Kd3-e4
59/71 02:28 551,174,949 3,728,589 +3.13 a4-a5 Nb8-a6 Bc3-e5 Na6-b4 Be5-f4 Nb4-c2 Ke4-d3 Nc2-b4+ Kd3-d2 Nb4-a6 Bf4-e3 Kc6-b7 Kd2-d3 Na6-b4+ Kd3-c3 Kb7-c6 Kc3-d2 Kc6-d6 Kd2-e2 Kd6-c6 Be3-d2 Nb4-a6 Ke2-d3 Kc6-d6 Kd3-c3 Na6-b4 Bd2-f4+ Kd6-c6 Bf4-e3 Nb4-a2+ Kc3-c2 Na2-b4+ Kc2-b2 Kc6-d6 Be3-d2 Nb4-a6 Kb2-c2 Kd6-c6 Kc2-d3
60/71 03:02 684,950,012 3,757,000 +3.13 a4-a5 Nb8-a6 Bc3-e5 Na6-b4 Be5-f4 Nb4-c2 Ke4-d3 Nc2-b4+ Kd3-d2 Nb4-a6 Bf4-e3 Kc6-b7 Kd2-d3 Na6-b4+ Kd3-c3 Kb7-c6 Kc3-d2 Kc6-d6 Kd2-e2 Kd6-c6 Be3-d2 Nb4-a6 Ke2-d3 Kc6-d6 Kd3-c3 Na6-b4 Bd2-f4+ Kd6-c6 Bf4-e3 Nb4-a2+ Kc3-c2 Na2-b4+ Kc2-b2 Kc6-d6 Be3-d2 Nb4-a6 Kb2-c2 Kd6-c6 Bd2-c3 Na6-c7 Bc3-e5 Nc7-a6 Kc2-c3 Na6-b4 Be5-f6 Kc6-d6 Bf6-g5 Kd6-c6 Bg5-e3
61/71 04:07 973,516,437 3,944,268 +3.13 a4-a5 Nb8-a6 Bc3-e5 Na6-b4 Be5-f4 Nb4-c2 Ke4-d3 Nc2-b4+ Kd3-d2 Nb4-a6 Bf4-e3 Kc6-b7 Kd2-d3 Na6-b4+ Kd3-c3 Kb7-c6 Kc3-d2 Kc6-d6 Kd2-e2 Kd6-c6 Be3-d2 Nb4-a6 Ke2-d3 Kc6-d6 Kd3-c3 Na6-b4 Bd2-f4+ Kd6-c6 Bf4-e3 Nb4-a2+ Kc3-c2 Na2-b4+ Kc2-b2 Kc6-d6 Be3-d2 Nb4-a6 Kb2-c2 Kd6-c6 Bd2-c3 Na6-c7 Bc3-e5 Nc7-a6 Kc2-c3 Na6-b4 Be5-f6 Kc6-d6 Bf6-g5 Kd6-c6 Bg5-f4 Nb4-a2+ Kc3-d2 Na2-b4 Bf4-e3
62/74 05:32 1,286,624,589 3,869,664 +3.13 a4-a5 Nb8-a6 Bc3-e5 Na6-b4 Be5-f4 Nb4-c2 Ke4-d3 Nc2-b4+ Kd3-d2 Nb4-a6 Bf4-e3 Kc6-b7 Kd2-e2 Kb7-c7 Ke2-d3 Na6-b4+ Kd3-e4 Kc7-c6 Be3-d2 Nb4-a6 Bd2-e1 Kc6-d6 Ke4-d3 Kd6-c6 Be1-f2 Na6-b4+ Kd3-e4 Kc6-d6 Bf2-g3+ Kd6-c6 Ke4-f3 Nb4-d3 Bg3-f4 Nd3-b4 Bf4-e3 Kc6-d6 Be3-f2 Kd6-c6 Kf3-e3 Kc6-b7 Ke3-e4 Kb7-c6 Ke4-f3 Nb4-a6 Kf3-e3 Kc6-b7 Bf2-e1 Kb7-c7 Ke3-d3 Kc7-b7
63/76 06:11 1,444,622,781 3,888,882 +3.13 a4-a5 Nb8-a6 Bc3-e5 Na6-b4 Be5-f4 Nb4-c2 Ke4-d3 Nc2-b4+ Kd3-d2 Nb4-a6 Bf4-e3 Kc6-b7 Kd2-e2 Kb7-c7 Ke2-d3 Na6-b4+ Kd3-e4 Kc7-c6 Be3-d2 Nb4-a6 Bd2-e1 Kc6-d6 Ke4-d3 Kd6-c6 Be1-f2 Na6-b4+ Kd3-e4 Kc6-d6 Bf2-g3+ Kd6-c6 Ke4-f3 Nb4-d3 Bg3-f4 Nd3-b4 Bf4-e3 Kc6-d6 Be3-f2 Kd6-c6 Kf3-e3 Kc6-d6 Bf2-g3+ Kd6-c6 Bg3-f4 Kc6-b7 Bf4-e5 Kb7-c6 Ke3-e4 Nb4-a2 Ke4-d3 Na2-b4+ Kd3-c3 Nb4-a6 Kc3-d3 Na6-b4+
64/79 07:25 1,769,491,107 3,971,083 +3.13 a4-a5 Nb8-a6 Bc3-e5 Na6-b4 Be5-f4 Nb4-c2 Ke4-d3 Nc2-b4+ Kd3-d2 Nb4-a6 Bf4-e3 Kc6-b7 Kd2-e2 Kb7-c7 Ke2-d3 Na6-b4+ Kd3-e4 Kc7-c6 Be3-d2 Nb4-a6 Bd2-e1 Kc6-d6 Ke4-d3 Kd6-c6 Be1-f2 Na6-b4+ Kd3-e4 Kc6-d6 Bf2-g3+ Kd6-c6 Ke4-f3 Nb4-d3 Bg3-f4 Nd3-b4 Bf4-e3 Kc6-d6 Be3-f2 Kd6-c6 Kf3-e3 Kc6-d6 Bf2-g3+ Kd6-c6 Ke3-e4 Nb4-a2 Bg3-f4 Na2-b4 Bf4-e3 Kc6-d6 Be3-d2 Nb4-a6 Bd2-f4+ Kd6-c6 Ke4-e3 Na6-b4 Ke3-d2
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Uri Blass
Posts: 10282
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Re: stockfish pruning weakness

Post by Uri Blass »

harder position
The same plan works

White wins
Houdini3 needs more time relative to the first position but can see it

[D]1n6/8/2k5/2p5/P1P5/1PB5/8/1K6 w - - 0 52


Edit:Basically there are 2 cases when zugzwangs are common not in pawn endgames
1)bishop against knight (the side with the knight is in zugzwang)
2)one side has the advantage(the second side is in zugzwang)

I think that it is better to be less agressive in using null move pruning in one of these cases or in both of them.
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Michel
Posts: 2272
Joined: Mon Sep 29, 2008 1:50 am

Re: stockfish pruning weakness

Post by Michel »

I assume that Stockfish can still win this in an actual game?
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Uri Blass
Posts: 10282
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Re: stockfish pruning weakness

Post by Uri Blass »

Michel wrote:I assume that Stockfish can still win this in an actual game?
I played the first position against it at 1+1 time control(1 core) and stockfish did not find the right moves and got a drawn tablebase position when I simply did not move the king.

Maybe it can win it at longer time control but I am not sure if it can win the second position even at 120 minutes/40 moves

Maybe tablebases can help stockfish but again I am not sure about it
and I am not sure if it can find something better than b4 with a draw after trading pawns.
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Jouni
Posts: 3286
Joined: Wed Mar 08, 2006 8:15 pm

Re: stockfish pruning weakness

Post by Jouni »

SF 5.4.2014 with 5 piece tablebases:

1.Ke5 Nd7+ 2.Ke6 Nb6 3.a5 Nc8 4.Be5 Na7 5.Bf4 Nc8 6.a6 Nb6 7.a7 Kb7 8.Bd2 Kc6 9.Be3 Kb7 10.Bxc5 Na8 11.Kd6 Nc7 12.a8R Nxa8 13.Bd4 Nc7 14.b4 Ka8 15.Kd7 Na6 16.b5 Nb4 17.c5 Nd5 18.c6 Nc7 19.b6
+- (154.02 ++) Depth: 63/89 00:03:12 644mN, tb=3486682
Jouni
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: stockfish pruning weakness

Post by zullil »

Uri Blass wrote:Here is a position when stockfish cannot see the win in a short time.


Latest stockfish is unable to see it
and I believe that the aggressive reductions prevent it to see it.


[D]1n6/8/2k5/2p5/P1P1K3/1PB5/8/8 w - - 0 52

Latest SF sees the win at depth 59 for me:

Code: Select all

info depth 60 seldepth 96 score cp 1903 nodes 1477113189 nps 6425919 time 229868 multipv 1 pv a4a5 b8a6 e4e5 a6c7 e5f5 c6d7 c3e5 c7a6 f5f6 d7c6 f6e6 a6b4 e5c3 b4c2 e6e5 c2e3 e5e4 e3g4 c3d2 g4f6 e4f5 f6e8 d2f4 e8g7 f5f6 g7h5 f6e5 h5g7 a5a6 c6b6 f4e3 b6a6 e3c5 a6b7 b3b4 b7c7 c5d4 c7d7 e5d5 g7f5 b4b5 f5d6 d4c3 d6f5 c3d2 d7c7 c4c5 c7d7 c5c6 d7c7 d5c5 c7c8 b5b6 f5g7 b6b7 c8d8 b7b8q d8e7 b8c7
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ernest
Posts: 2041
Joined: Wed Mar 08, 2006 8:30 pm

Re: stockfish pruning weakness

Post by ernest »

Uri Blass wrote:Latest stockfish is unable to see it
Indeed no difficulty at all for my Stockfish 220214 syzygy (5-men).

But is Bd2 really a win ???

New game
1n6/8/2k5/2p5/P1P1K3/1PB5/8/8 w - - 0 1

Analysis by Stockfish 220214 syz:

1.Kd3 Na6 2.a5 Kb7 3.Be5 Nb4+ 4.Ke4
+- (4.28) Depth: 6/7 00:00:00 2kN
1.a5 Nd7 2.Kf5 Nb8 3.Ke6 Na6 4.Be5
+- (4.21) Depth: 7/8 00:00:00 4kN
1.a5 Nd7 2.Kf5 Nb8 3.Ke6 Na6 4.Be5 Nb4
+- (4.14) Depth: 8/9 00:00:00 5kN
1.a5 Na6 2.Kd3 Nc7 3.Be5 Na6 4.Bf4 Nb4+ 5.Ke4 Kb7
+- (4.23) Depth: 9/10 00:00:00 6kN
1.a5 Na6 2.Be5 Nb4 3.Bf4 Na6 4.Be3 Nb4 5.Ke5 Nd3+ 6.Ke4
+- (4.28) Depth: 10/11 00:00:00 8kN, tb=4
1.Bd2 Nd7 2.Be3 Nf6+ 3.Kf5 Nd7 4.a5 Nb8 5.Ke4 Na6 6.Bf4 Nb4 7.Be3 Na6
+- (4.31) Depth: 11/14 00:00:00 17kN, tb=15
1.Bd2 Nd7 2.Be3 Nf6+ 3.Kf5 Nd7 4.a5 Nb8 5.Ke4 Na6 6.Bf4 Nb4 7.Be5 Kb7 8.Bc3 Nc6 9.Kd5
+- (4.31) Depth: 12/16 00:00:00 35kN, tb=39
1.Bd2 Na6 2.Be3 Nc7 3.a5 Na6 4.Bf4 Kb7 5.Bd2 Nc7 6.Be3 Kc6 7.Bf4 Na6 8.Be5 Nb4 9.Bb2 Na6 10.Bc3 Nc7 11.Be5 Na6 12.Bc3
+- (4.23) Depth: 13/17 00:00:00 49kN, tb=64
1.Bd2 Na6 2.Be3 Nc7 3.a5 Na6 4.Bf4 Kb7 5.Bd2 Kc6 6.Bc3 Nc7 7.Kd3 Na6 8.Bd2 Nc7 9.Bc3
+- (4.15) Depth: 14/18 00:00:00 68kN, tb=96
1.Bd2 Na6 2.Be3 Nc7 3.a5 Na6 4.Bf4 Kb7 5.Bd2 Kc6 6.Bc3 Nc7 7.Kd3 Na6 8.Bd2 Nc7 9.Bc3
+- (4.15) Depth: 15/18 00:00:00 72kN, tb=104
1.Bd2 Na6 2.Be3 Nc7 3.a5 Na6 4.Bf4 Kb7 5.Bd2 Kc6 6.Bc3 Nc7 7.Kd3 Na6 8.Bd2 Nc7 9.Bc3
+- (4.15) Depth: 16/18 00:00:00 77kN, tb=123
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Ke4 Nc7 7.Kf5
+- (4.15) Depth: 17/21 00:00:00 111kN, tb=187
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Ke4 Nc7 7.Kf5
+- (4.15) Depth: 18/21 00:00:00 121kN, tb=203
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Ke4 Nc7 7.Kf5
+- (4.15) Depth: 19/21 00:00:00 127kN, tb=207
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Ke4 Nc7 7.Kf5
+- (4.15) Depth: 20/21 00:00:00 137kN, tb=217
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Ke4 Nc7 7.Kf5
+- (4.15) Depth: 21/21 00:00:00 152kN, tb=242
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Ke4 Nc7 7.Bf4 Na6 8.Bd2
+- (4.15) Depth: 22/21 00:00:00 172kN, tb=271
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Ke4 Nc7 7.Bf4 Na6 8.Bd2
+- (4.15) Depth: 23/21 00:00:00 195kN, tb=315
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Ke4 Nc7 7.Bf4 Na6 8.Bd2
+- (4.15) Depth: 24/21 00:00:00 216kN, tb=335
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.Ke5 Kc6
+- (4.15) Depth: 25/21 00:00:00 262kN, tb=394
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Bd2 Nb8 12.Bc3 Na6 13.Be5 Nb4 14.Ke3 Na6
+- (4.14) Depth: 26/28 00:00:00 344kN, tb=812
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Bd2 Nb8 12.Bc3 Na6 13.Be5 Nb4 14.Bf6 Kd6 15.Bc3 Na6 16.Be5+ Kc6 17.Bc3 Kd6
+- (4.14) Depth: 27/30 00:00:00 388kN, tb=902
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Bd2 Nb8 12.Bc3 Na6 13.Be5 Nb4 14.Bf6 Kd6 15.Bc3 Na6 16.Be5+ Kc6 17.Bf4 Kd7 18.Be5 Kc6
+- (4.14) Depth: 28/33 00:00:00 436kN, tb=1003
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Bd2 Nb8 12.Bc3 Na6 13.Be5 Nb4 14.Bf4 Na6
+- (4.14) Depth: 29/33 00:00:00 587kN, tb=2212
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Bd2 Nb8 12.Bc3 Na6 13.Ke5 Nc7 14.Bd2 Na6 15.Be3 Nb4 16.Ke4 Na6 17.Bf4 Kd7 18.Be5 Kc6 19.Bf4
+- (4.14) Depth: 30/33 00:00:00 661kN, tb=2645
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Bd2 Nb8 12.Bc3 Na6 13.Ke5 Nc7 14.Bd2 Na6 15.Be3 Nb4 16.Ke4 Na6 17.Bf4 Kd7 18.Be5 Kc6 19.Bf4
+- (4.14) Depth: 31/33 00:00:01 743kN, tb=2959
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be3
+- (4.14) Depth: 32/33 00:00:01 862kN, tb=3998
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Kd6 14.Bd2 Kc6 15.Bf4 Kd7 16.Be5 Kc6 17.Bf4
+- (4.14) Depth: 33/33 00:00:01 963kN, tb=4545
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Kd6 14.Bd2 Kc6 15.Bf4 Kd7 16.Be5 Kc6 17.Bf4
+- (4.14) Depth: 34/33 00:00:01 1148kN, tb=5389
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Be5 Na6 15.Bf4 Kd7 16.Be5 Kc6
+- (4.14) Depth: 35/33 00:00:01 1331kN, tb=5996
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Be5 Na6 15.Bf4 Nb4 16.Be3 Na6 17.Kd3 Nc7 18.Bf4 Na6 19.Be3
+- (4.14) Depth: 36/43 00:00:01 1661kN, tb=9190
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Be3
+- (4.14) Depth: 37/43 00:00:01 1860kN, tb=10457
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bc3
+- (4.14) Depth: 38/43 00:00:01 2130kN, tb=11781
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Be3 Nc2 17.a6 Nxe3 18.a7
+- (4.14) Depth: 39/43 00:00:02 2671kN, tb=17526
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bc3
+- (4.14) Depth: 40/43 00:00:02 2990kN, tb=19364
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Be3
+- (4.14) Depth: 41/45 00:00:03 4800kN, tb=44674
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bc3
+- (4.14) Depth: 42/49 00:00:03 5379kN, tb=48358
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bc3
+- (4.14) Depth: 43/49 00:00:04 5938kN, tb=52107
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bc3
+- (4.14) Depth: 44/49 00:00:04 7037kN, tb=60473
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Bg3 Nc2 17.Kd3 Nb4+ 18.Kc3 Na2+ 19.Kd2 Nb4 20.Bf2 Kd6 21.Be3 Kc6 22.Ke2 Na6 23.Kf3 Nb4 24.Bd2 Na6 25.Ke4 Nc7 26.Bf4
+- (4.14) Depth: 45/57 00:00:05 7796kN, tb=68046
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bc3
+- (4.14) Depth: 46/57 00:00:06 10560kN, tb=93784
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Bg3 Nc2 17.Kd3 Nb4+ 18.Kc3 Na2+ 19.Kd2 Nb4 20.Bf2 Kd6 21.Be3 Kc6 22.Ke2 Na6 23.Kf3 Nb4 24.Bd2 Na6 25.Ke4 Nc7 26.Be3 Na6 27.Bf4
+- (4.14) Depth: 47/57 00:00:06 11563kN, tb=98722
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Bg3 Nc2 17.Kd3 Nb4+ 18.Kc3 Na2+ 19.Kd2 Nb4 20.Bf2 Kd6 21.Be3 Kc6 22.Bf2
+- (4.14) Depth: 48/57 00:00:06 12750kN, tb=105428
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Bg3 Nc2 17.Kd3 Nb4+ 18.Kc3 Na2+ 19.Kd2 Nb4 20.Bf2 Kd6 21.Be3 Kc6 22.Kc3 Kd6 23.Bf4+ Kc6 24.Bd2 Kd6 25.Kb2 Na6 26.Kc2 Kc6 27.Kd3 Kd7 28.Bf4 Kc6 29.Be3 Nb4+ 30.Kc3
+- (4.14) Depth: 49/62 00:00:07 13845kN, tb=109398
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Bg3 Nc2 17.Kd3 Nb4+ 18.Kc3 Na2+ 19.Kd2 Nb4 20.Bf2 Kd6 21.Be3 Kc6 22.Kc3 Na6 23.Bf4 Nb4 24.Bd2 Kb7 25.Bg5 Na2+ 26.Kd3 Nb4+ 27.Ke4 Nc6 28.Bd2 Nd4 29.b4 Nb3 30.a6+ Ka8 31.Bc3 cxb4 32.Bxb4 Ka7
+- (4.14) Depth: 50/62 00:00:08 15934kN, tb=123420
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Bg3 Nc2 17.Kd3 Nb4+ 18.Kc3 Na2+ 19.Kd2 Nb4 20.Bf2 Kd6 21.Be3 Kc6 22.Kc3 Na6 23.Bf4 Nb4 24.Bd2 Kb7 25.Bg5 Na2+ 26.Kd3 Nb4+ 27.Ke4 Nc6 28.Bd2 Nd4 29.b4 Nb3 30.a6+ Ka8 31.Bc3 cxb4 32.Bxb4 Ka7
+- (4.14) Depth: 51/62 00:00:08 16461kN, tb=126134
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Bg3 Nc2 17.Kd3 Nb4+ 18.Kc3 Na2+ 19.Kd2 Nb4 20.Bf2 Kd6 21.Be3 Kc6 22.Kc3 Na6 23.Bf4 Nb4 24.Bd2 Kb7 25.Be3 Kc6 26.Kd2 Kd6 27.Bf4+ Kc6 28.Kc3 Na2+ 29.Kb2 Nb4 30.Bd2 Na6 31.Kc2 Nc7 32.Be3 Na6 33.Kd3 Nb4+ 34.Kc3
+- (4.14) Depth: 52/63 00:00:09 18918kN, tb=146801
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Bg3 Nc2 17.Kd3 Nb4+ 18.Kc3 Na2+ 19.Kd2 Nb4 20.Bf2 Kd6 21.Be3 Kc6 22.Kc3 Na2+ 23.Kb2 Nb4 24.Bd2 Na6 25.Kc2 Nc7 26.Be3 Na6 27.Kd3 Kd6 28.Ke4 Kc6 29.Bf2 Nc7 30.Kd3 Na6 31.Be3
+- (4.14) Depth: 53/68 00:00:15 37725kN, tb=355243
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Bg3 Nc2 17.Kd3 Nb4+ 18.Kc3 Na2+ 19.Kd2 Nb4 20.Bf2 Kd6 21.Be3 Kc6 22.Kc3 Na2+ 23.Kb2 Nb4 24.Bd2 Na6 25.Kc2 Nc7 26.Be3 Na6 27.Kd3 Kd6 28.Ke4 Nb4 29.Bf4+ Kc6
+- (4.14) Depth: 54/68 00:00:18 44224kN, tb=416948
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Bg3 Nc2 17.Kd3 Nb4+ 18.Kc3 Na2+ 19.Kd2 Nb4 20.Bf2 Kd6 21.Be3 Kc6 22.Kc3 Na2+ 23.Kb2 Nb4 24.Bd2 Na6 25.Kc2 Nc7 26.Be3 Na6 27.Kd3 Kd6 28.Ke4 Nb4 29.Bg5 Kc6 30.Bf4 Nc2 31.Kd3 Nb4+ 32.Kc3 Na6 33.Be5 Nb4 34.Bg3
+- (4.14) Depth: 55/70 00:00:18 46660kN, tb=426406
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Bg3 Nc2 17.Kd3 Nb4+ 18.Kc3 Na2+ 19.Kd2 Nb4 20.Bf2 Kd6 21.Be3 Kc6 22.Kc3 Na2+ 23.Kb2 Nb4 24.Bd2 Na6 25.Kc2 Nc7 26.Be3 Na6 27.Kd3 Kd6 28.Ke4 Nb4 29.Kf5 Kc6 30.Bd2 Na6 31.Ke4 Nb8 32.Bc3 Na6 33.Kd3 Nc7 34.Be5 Na6 35.Bc3
+- (4.14) Depth: 56/73 00:00:20 51001kN, tb=452910
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Be3
+- (4.14) Depth: 57/73 00:00:21 54148kN, tb=471131
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Bg3 Nc2 17.Kd3 Nb4+ 18.Kc3 Na2+ 19.Kd2 Nb4 20.Bf2 Kd6 21.Be3 Kc6 22.Kc3 Kd6 23.Bd2 Kc6 24.Kb2 Na6 25.Kc2 Nc7 26.Be3 Na6 27.Kd3 Kd6 28.Ke4 Nb4 29.Bf4+ Kc6
+- (4.14) Depth: 58/73 00:00:24 62828kN, tb=525078
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Be3
+- (4.14) Depth: 59/73 00:00:26 69266kN, tb=566925
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Be3 Kd6 17.Bd2 Na6 18.Kd3 Kc6 19.Bf4 Nb4+ 20.Kc3 Na2+ 21.Kb2 Nb4 22.Bd2 Na6 23.Kc2 Nc7 24.Be3 Na6 25.Kd3 Nc7 26.Bf4 Na6 27.Be3
+- (4.14) Depth: 60/73 00:00:28 76886kN, tb=613836
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bc3
+- (4.14) Depth: 61/73 00:00:35 97755kN, tb=769960
1.Bd2 Na6 2.Ke5 Nc7 3.a5 Na6 4.Ke4 Nc7 5.Ke3 Kd6 6.Kf3 Kc6 7.Ke4 Na6 8.Be1 Nc7 9.Bf2 Na6 10.Bg3 Nb4 11.Be1 Na6 12.Ke3 Nc7 13.Bc3 Kd6 14.Bd2 Kc6 15.Kf3 Ne6 16.Bc3 Nc7 17.Kg4 Na6 18.Kf5 Kb7 19.Ke5 Kc6 20.Bd2 Nc7 21.Ke4
+- (4.14) Depth: 62/73 00:01:05 186mN, tb=1511368
1.Bd2 Na6 2.Ke5 Nc7 3.a5 Na6 4.Ke4 Nc7 5.Ke3 Kd6 6.Kf3 Kc6 7.Ke4 Na6 8.Be1 Nc7 9.Bf2 Na6 10.Bg3 Nb4 11.Be1 Na6 12.Ke3 Nc7 13.Bc3 Kd6 14.Bd2 Kc6 15.Kf3 Kd7 16.Bc3 Kd6 17.Kf4 Na6 18.Ke3 Nc7
+- (4.14) Depth: 63/73 00:01:09 198mN, tb=1590104
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Ne8 4.a5 Nc7 5.Kf6 Ne8+ 6.Kf5 Nc7 7.Ke5 Na6 8.Ke6 Nb4 9.Ke7 Nc2 10.Bg1 Nb4 11.Kd8 Nd3 12.Kc8 Ne5 13.a6 Kb6 14.Bxc5+ Kxc5 15.a7
+- (4.22 !) Depth: 64/73 00:01:27 246mN, tb=2044482
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.a5 Nc7 5.Kf6 Ne8+ 6.Kf5 Nc7 7.Ke5 Na6 8.Bg1 Nb4 9.Ke6 Nc2 10.Ke7 Nb4 11.Kd8 Nd3 12.a6 Kb6 13.a7 Kxa7 14.Kd7 Ka6 15.Be3 Ka5 16.Bd2+ Kb6 17.Kd6 Ka6 18.Kd5 Kb6 19.Be3 Nb4+ 20.Kd6 Nd3 21.b4 Ne1 22.Bxc5+ Kb7 23.b5 Nc2 24.Kd5 Kc7 25.Bd6+ Kb6 26.Bf4 Ka5 27.Kd6 Na3 28.Kc5
+- (4.30 !) Depth: 64/73 00:01:33 263mN, tb=2201877
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.a5 Nc7 5.Kf6 Ne8+ 6.Kf5 Nc7 7.Ke5 Na6 8.Bg1 Nb4 9.Ke6 Nc2 10.Ke7 Na1 11.b4 cxb4 12.a6 b3 13.c5 b2 14.a7 Kb7 15.c6+ Kc7 16.Bh2+
+- (4.42 !) Depth: 64/73 00:01:36 272mN, tb=2239229
1.Bd2 Nd7 2.Be3 Kb6 3.b4 Nf6+ 4.Kd3
+- (4.61 !) Depth: 64/73 00:01:39 281mN, tb=2294198
1.Bd2 Na6 2.Ke5 Nb8 3.Ke6 Na6 4.a5 Nb8 5.Ke7 Na6 6.Be3 Nc7 7.Bf4 Na6 8.Kd8 Kb7 9.Be3 Nb4 10.Kd7 Nc6 11.Kd6 Nxa5 12.Kxc5 Ka6 13.b4 Nb3+ 14.Kd5 Na1 15.b5+ Kb7 16.c5
+- (4.88 !) Depth: 64/73 00:02:11 335mN, tb=2520517
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Kf6 Nb4 5.Bd2 Nc2 6.Bc3 Nd4 7.b4 Kb7 8.b5 Ne2 9.Bd2 Nd4 10.Be3
+- (5.29 !) Depth: 64/73 00:02:17 349mN, tb=2572142
1.Bd2 Kd7 2.Kd5 Na6 3.Be3
+- (5.90 !) Depth: 64/88 00:02:42 421mN, tb=3090221
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Na6 6.Kf5 Nb4 7.Bd2 Nc2 8.Bc3 Ne3+ 9.Ke4 Nf1 10.Kd3 Kb7 11.Be5 Ka6 12.Ke2
+- (6.81 !) Depth: 64/88 00:03:05 476mN, tb=3332443
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Nc2 6.Kd3 Nb4+ 7.Ke2 Na6 8.Kf3 Nb4 9.Kf4 Kc7 10.Bd2 Na6 11.Kg5 Kd6 12.Kf6 Kd7 13.Be3 Kd6 14.Kf7 Kd7 15.Bg1 Kd6 16.Ke8 Nb4 17.Be3 Ke5 18.Bxc5 Na6 19.b4
+- (8.18 !) Depth: 64/88 00:04:27 703mN, tb=6174541
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Nc2 6.Kd3 Nb4+ 7.Ke2 Na6 8.Kf3 Kd7 9.Kf4 Kd6 10.Bf2 Ke6 11.Ke4 Kd7 12.Kd5 Nb4+ 13.Kxc5 Nd3+ 14.Kb6 Nxf2 15.a6 Kd6 16.c5+ Kd7 17.c6+ Ke7 18.a7
+- (10.23 !) Depth: 64/88 00:04:44 754mN, tb=6426663
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Nc2 6.Kd3 Nb4+ 7.Ke2 Na6 8.Kf3 Kd7 9.Kf4 Kd6 10.Bf2 Ke6 11.Ke4 Kd6 12.Kf5 Kc6 13.Be1 Nc7 14.Bc3 Kb7 15.Be5 Na6 16.Ke6 Nb4 17.Bc3 Nd3 18.Bd2 Kc6 19.a6 Kb6 20.a7 Kxa7 21.Be3 Ka8 22.Kd6 Kb8 23.Bxc5 Kb7 24.Be3 Ka8 25.Kc7 Nb4 26.Bc5 Nc2 27.Kc6 Kb8 28.b4 Na3 29.Bd6+ Ka7 30.Kc5 Nc2 31.Bf4 Ne1 32.Bd2 Nd3+ 33.Kd5 Kb8 34.Kd4 Nb2 35.Bc1 Na4 36.Bf4+ Kb7 37.Be3 Kc7 38.b5 Nb6 39.c5 Nc8 40.Bf4+ Kd8 41.b6 Ne7 42.b7
+- (10.23) Depth: 64/88 00:04:54 780mN, tb=6673099
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Nc2 6.Kd3 Nb4+ 7.Ke2 Na6 8.Kf3 Kd7 9.Kf4 Kd6 10.Bf2 Ke6 11.Ke4 Kd6 12.Kf5 Kc6 13.Be1 Nc7 14.Bc3 Kb7 15.Be5 Na6 16.Ke6 Kc6 17.Bc3 Nb8 18.Bb2 Na6 19.Be5 Nb4 20.Bc3 Nc2 21.Ke5 Ne3 22.Kf4 Nf1 23.Ke4 Ng3+ 24.Kd3 Nf5 25.Bd2 Ng7 26.Bf4 Ne6 27.Ke4 Kb7 28.Be5 Kc6 29.Kf5 Nd8 30.Bc3 Nf7 31.Bd2 Nd6+ 32.Ke5 Ne8 33.a6 Nc7 34.a7 Na8 35.Be3 Nb6 36.Ke6 Kc7 37.Bxc5 Na8 38.Ke7 Kc6 39.b4 Kc7 40.Kf6 Kc6 41.Ke5 Kd7 42.Bd4 Kc6 43.b5+ Kb7 44.b6 Ka6 45.Kd6
+- (10.23) Depth: 65/94 00:05:04 809mN, tb=7005482
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Nc2 6.Kd3 Nb4+ 7.Ke2 Na6 8.Kf3 Kd7 9.Kf4 Kd6 10.Bf2 Ke6 11.Ke4 Kd6 12.Kf5 Kc6 13.Be1 Nc7 14.Bc3 Kb7 15.Be5 Na6 16.Ke6 Kc6 17.Bc3 Nb8 18.Bb2 Na6 19.Be5 Nb4 20.Bc3 Nc2 21.Ke5 Ne3 22.Kf4 Nf1 23.Ke4 Ng3+ 24.Kd3 Nf5 25.Bd2 Ng7 26.Bf4 Ne6 27.Ke4 Kb7 28.Be5 Kc6 29.Kf5 Nd8 30.Bc3 Nf7 31.Bd2 Nd6+ 32.Ke5 Ne8 33.a6 Nc7 34.a7 Na8 35.Be3 Nb6 36.Ke6 Kc7 37.Bxc5 Na8 38.Ke7 Kc6 39.b4 Kc7 40.Kf6 Kc6 41.Ke5 Kd7 42.Bd4 Kc6 43.b5+ Kb7 44.b6 Ka6 45.Kd6
+- (10.23) Depth: 66/94 00:05:05 813mN, tb=7022334
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Nc2 6.Kd3 Nb4+ 7.Ke2 Na6 8.Kf3 Kd7 9.Kf4 Kd6 10.Bf2 Ke6 11.Ke4 Kd6 12.Kf5 Kc6 13.Be1 Nc7 14.Bc3 Kb7 15.Be5 Na6 16.Ke6 Kc6 17.Bc3 Nc7+ 18.Ke7 Na6 19.Bd2 Nc7 20.Be3 Na6 21.Kf6 Nb4 22.Bg1 Kd6 23.Kf5 Kc6 24.Bf2 Nd3 25.Be3 Nb4 26.Bd2 Nc2 27.Bc3 Ne3+ 28.Kf4 Nf1 29.Ke4 Ng3+ 30.Kd3 Nf5 31.Bd2 Ng7 32.Bf4 Ne6 33.Ke4 Kb7 34.Be5 Kc6 35.Kf5 Nd8 36.Bc3 Nf7 37.Bd2 Nd6+ 38.Ke5 Ne8 39.a6 Nc7 40.a7 Na8 41.Be3 Nb6 42.Ke4 Kd6 43.b4
+- (10.23) Depth: 67/94 00:05:48 931mN, tb=8573435
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Nc2 6.Kd3 Nb4+ 7.Ke2 Na6 8.Kf3 Kd7 9.Kf4 Kd6 10.Bf2 Ke6 11.Ke4 Kd6 12.Kf5 Kc6 13.Be1 Nc7 14.Bc3 Kb7 15.Be5 Na6 16.Ke6 Kc6 17.Bc3 Nb8 18.Bb2 Na6 19.Be5 Nb4 20.Bc3 Nd3 21.Bd2 Nb4 22.Bxb4 cxb4 23.a6 Kb6 24.a7 Kc5 25.a8Q Kd4 26.Qd5+
+- (10.23) Depth: 68/94 00:06:33 1054mN, tb=10499317
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Nc2 6.Kd3 Nb4+ 7.Ke2 Na6 8.Kf3 Kd7 9.Kf4 Kd6 10.Bf2 Ke6 11.Ke4 Kd6 12.Kf5 Kc6 13.Be1 Nc7 14.Bc3 Kb7 15.Be5 Na6 16.Ke6 Kc6 17.Bc3 Nb8 18.Bb2 Na6 19.Be5 Nb4 20.Bc3 Nd3 21.Bd2 Nb4 22.Bxb4 cxb4 23.a6 Kb6 24.a7 Kc5 25.a8Q Kd4 26.Qd5+ Kc3 27.c5
+- (10.23) Depth: 69/94 00:06:34 1058mN, tb=10509633
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Nc2 6.Kd3 Nb4+ 7.Ke2 Na6 8.Kf3 Kd7 9.Kf4 Kd6 10.Bf2 Ke6 11.Ke4 Kd6 12.Kf5 Kc6 13.Be1 Nc7 14.Bc3 Kb7 15.Be5 Na6 16.Ke6 Kc6 17.Bc3 Nb8 18.Bb2 Na6 19.Be5 Nb4 20.Bc3 Na6 21.Bd2 Nb8 22.Ke7 Na6 23.Be1 Nc7 24.Kf6 Kb7 25.Bd2 Kc6 26.Be3 Na6 27.Bd2 Nb8 28.Ke7
+- (10.23) Depth: 70/94 00:06:47 1092mN, tb=10888528
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Nc2 6.Kd3 Nb4+ 7.Ke2 Na6 8.Kf3 Kd7 9.Kf4 Kd6 10.Bf2 Ke6 11.Ke4 Kd6 12.Kf5 Kc6 13.Be1 Nc7 14.Bc3 Kb7 15.Be5 Na6 16.Ke6 Kc6 17.Bc3 Nb8 18.Bb2 Na6 19.Be5 Nb4 20.Bc3 Na6 21.Bd2 Nb8 22.Bc3 Na6
+- (10.23) Depth: 71/94 00:07:06 1144mN, tb=11677427
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Nc2 6.Kd3 Nb4+ 7.Ke2 Na6 8.Kf3 Kd7 9.Kf4 Kd6 10.Bf2 Ke6 11.Ke4 Kd6 12.Kf5 Kc6 13.Be1 Nc7 14.Bc3 Kb7 15.Be5 Na6 16.Ke6 Kc6 17.Bc3 Nb8 18.Bb2 Na6 19.Be5 Nb4 20.Bc3 Na6 21.Bd2 Nb8 22.Bc3 Na6
+- (10.23) Depth: 72/94 00:07:08 1149mN, tb=11702955
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Nc2 6.Kd3 Nb4+ 7.Ke2 Na6 8.Kf3 Kd7 9.Kf4 Kd6 10.Bf2 Ke6 11.Ke4 Kd6 12.Kf5 Kc6 13.Be1 Nc7 14.Bc3 Kb7 15.Be5 Na6 16.Ke6 Kc6 17.Bc3 Nb8 18.Bb2 Na6 19.Be5 Nb4 20.Bc3 Na6 21.Bd2 Nb8 22.Bc3 Nd7 23.Be5 Nf8+ 24.Kf7 Nd7 25.Bf4 Kb7 26.Ke7 Kc8 27.Kd6 Nf8 28.a6 Nd7 29.a7 Nb6 30.Bd2 Kb7 31.Kxc5 Na8 32.Be3 Kc7 33.b4 Kd7 34.Kd4 Kc6 35.Ke5 Kb7 36.Bd4 Nc7 37.Ke4 Na6 38.b5 Nc7 39.Be3 Ne8 40.Ke5 Ka8 41.Bd4 Nc7 42.b6
+- (10.23) Depth: 73/94 00:07:32 1217mN, tb=12473820
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Nc2 6.Kd3 Nb4+ 7.Ke2 Na6 8.Kf3 Kd7 9.Kf4 Kd6 10.Bf2 Ke6 11.Ke4 Kd6 12.Kf5 Kc6 13.Be1 Nc7 14.Bc3 Kb7 15.Be5 Na6 16.Ke6 Kc6 17.Bc3 Nb8 18.Bb2 Na6 19.Be5 Nb4 20.Bc3 Na6 21.Bd2 Nb8 22.Kf5 Na6 23.Bc3 Nc7 24.Be5 Na6 25.Kf6 Kb7 26.Ke6
+- (10.23) Depth: 74/94 00:08:47 1417mN, tb=15161038
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Nc2 6.Kd3 Nb4+ 7.Ke2 Na6 8.Kf3 Kd7 9.Kf4 Kd6 10.Bf2 Ke6 11.Ke4 Kd6 12.Kf5 Kc6 13.Be1 Nc7 14.Bc3 Kb7 15.Be5 Na6 16.Ke6 Kc6 17.Bc3 Nb8 18.Bb2 Na6 19.Be5 Nb4 20.Bc3 Na6 21.Bd2 Nb8 22.Ke7 Na6 23.Be3 Nc7 24.Kd8 Ne6+ 25.Kc8 Nc7 26.Bg1 Na6 27.Be3 Nc7
+- (10.23) Depth: 75/94 00:08:49 1424mN, tb=15222869
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Nc2 6.Kd3 Nb4+ 7.Ke2 Na6 8.Kf3 Nc7 9.Bf4 Na6 10.Ke4 Nb4 11.Be3
+- (10.23) Depth: 76/94 00:09:04 1465mN, tb=15831779
Top
Uri Blass
Posts: 10282
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Re: stockfish pruning weakness

Post by Uri Blass »

ernest wrote:
Uri Blass wrote:Latest stockfish is unable to see it
Indeed no difficulty at all for my Stockfish 220214 syzygy (5-men).

But is Bd2 really a win ???

+- (4.14) Depth: 52/63 00:00:09 18918kN, tb=146801
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Bg3 Nc2 17.Kd3 Nb4+ 18.Kc3 Na2+ 19.Kd2 Nb4 20.Bf2 Kd6 21.Be3 Kc6 22.Kc3 Na2+ 23.Kb2 Nb4 24.Bd2 Na6 25.Kc2 Nc7 26.Be3 Na6 27.Kd3 Kd6 28.Ke4 Kc6 29.Bf2 Nc7 30.Kd3 Na6 31.Be3
+- (4.14) Depth: 53/68 00:00:15 37725kN, tb=355243
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Bg3 Nc2 17.Kd3 Nb4+ 18.Kc3 Na2+ 19.Kd2 Nb4 20.Bf2 Kd6 21.Be3 Kc6 22.Kc3 Na2+ 23.Kb2 Nb4 24.Bd2 Na6 25.Kc2 Nc7 26.Be3 Na6 27.Kd3 Kd6 28.Ke4 Nb4 29.Bf4+ Kc6
+- (4.14) Depth: 54/68 00:00:18 44224kN, tb=416948
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Bg3 Nc2 17.Kd3 Nb4+ 18.Kc3 Na2+ 19.Kd2 Nb4 20.Bf2 Kd6 21.Be3 Kc6 22.Kc3 Na2+ 23.Kb2 Nb4 24.Bd2 Na6 25.Kc2 Nc7 26.Be3 Na6 27.Kd3 Kd6 28.Ke4 Nb4 29.Bg5 Kc6 30.Bf4 Nc2 31.Kd3 Nb4+ 32.Kc3 Na6 33.Be5 Nb4 34.Bg3
+- (4.14) Depth: 55/70 00:00:18 46660kN, tb=426406
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Bg3 Nc2 17.Kd3 Nb4+ 18.Kc3 Na2+ 19.Kd2 Nb4 20.Bf2 Kd6 21.Be3 Kc6 22.Kc3 Na2+ 23.Kb2 Nb4 24.Bd2 Na6 25.Kc2 Nc7 26.Be3 Na6 27.Kd3 Kd6 28.Ke4 Nb4 29.Kf5 Kc6 30.Bd2 Na6 31.Ke4 Nb8 32.Bc3 Na6 33.Kd3 Nc7 34.Be5 Na6 35.Bc3
+- (4.14) Depth: 56/73 00:00:20 51001kN, tb=452910
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Be3
+- (4.14) Depth: 57/73 00:00:21 54148kN, tb=471131
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Bg3 Nc2 17.Kd3 Nb4+ 18.Kc3 Na2+ 19.Kd2 Nb4 20.Bf2 Kd6 21.Be3 Kc6 22.Kc3 Kd6 23.Bd2 Kc6 24.Kb2 Na6 25.Kc2 Nc7 26.Be3 Na6 27.Kd3 Kd6 28.Ke4 Nb4 29.Bf4+ Kc6
+- (4.14) Depth: 58/73 00:00:24 62828kN, tb=525078
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Be3
+- (4.14) Depth: 59/73 00:00:26 69266kN, tb=566925
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bf4 Nb4 16.Be3 Kd6 17.Bd2 Na6 18.Kd3 Kc6 19.Bf4 Nb4+ 20.Kc3 Na2+ 21.Kb2 Nb4 22.Bd2 Na6 23.Kc2 Nc7 24.Be3 Na6 25.Kd3 Nc7 26.Bf4 Na6 27.Be3
+- (4.14) Depth: 60/73 00:00:28 76886kN, tb=613836
1.Bd2 Na6 2.Ke5 Nc7 3.Kf5 Na6 4.Ke6 Nc7+ 5.Ke5 Na6 6.Kf5 Kb6 7.a5+ Kb7 8.Be3 Kc6 9.Ke4 Nc7 10.Bf4 Na6 11.Be5 Nb4 12.Bb2 Na6 13.Bc3 Nc7 14.Bd2 Na6 15.Bc3
+- (4.14) Depth: 61/73 00:00:35 97755kN, tb=769960
1.Bd2 Na6 2.Ke5 Nc7 3.a5 Na6 4.Ke4 Nc7 5.Ke3 Kd6 6.Kf3 Kc6 7.Ke4 Na6 8.Be1 Nc7 9.Bf2 Na6 10.Bg3 Nb4 11.Be1 Na6 12.Ke3 Nc7 13.Bc3 Kd6 14.Bd2 Kc6 15.Kf3 Ne6 16.Bc3 Nc7 17.Kg4 Na6 18.Kf5 Kb7 19.Ke5 Kc6 20.Bd2 Nc7 21.Ke4
+- (4.14) Depth: 62/73 00:01:05 186mN, tb=1511368
1.Bd2 Na6 2.Ke5 Nc7 3.a5 Na6 4.Ke4 Nc7 5.Ke3 Kd6 6.Kf3 Kc6 7.Ke4 Na6 8.Be1 Nc7 9.Bf2 Na6 10.Bg3 Nb4 11.Be1 Na6 12.Ke3 Nc7 13.Bc3 Kd6 14.Bd2 Kc6 15.Kf3 Kd7 16.Bc3 Kd6 17.Kf4 Na6 18.Ke3 Nc7
+- (4.14) Depth: 63/73 00:01:09 198mN, tb=1590104
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Ne8 4.a5 Nc7 5.Kf6 Ne8+ 6.Kf5 Nc7 7.Ke5 Na6 8.Ke6 Nb4 9.Ke7 Nc2 10.Bg1 Nb4 11.Kd8 Nd3 12.Kc8 Ne5 13.a6 Kb6 14.Bxc5+ Kxc5 15.a7
+- (4.22 !) Depth: 64/73 00:01:27 246mN, tb=2044482
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.a5 Nc7 5.Kf6 Ne8+ 6.Kf5 Nc7 7.Ke5 Na6 8.Bg1 Nb4 9.Ke6 Nc2 10.Ke7 Nb4 11.Kd8 Nd3 12.a6 Kb6 13.a7 Kxa7 14.Kd7 Ka6 15.Be3 Ka5 16.Bd2+ Kb6 17.Kd6 Ka6 18.Kd5 Kb6 19.Be3 Nb4+ 20.Kd6 Nd3 21.b4 Ne1 22.Bxc5+ Kb7 23.b5 Nc2 24.Kd5 Kc7 25.Bd6+ Kb6 26.Bf4 Ka5 27.Kd6 Na3 28.Kc5
+- (4.30 !) Depth: 64/73 00:01:33 263mN, tb=2201877
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.a5 Nc7 5.Kf6 Ne8+ 6.Kf5 Nc7 7.Ke5 Na6 8.Bg1 Nb4 9.Ke6 Nc2 10.Ke7 Na1 11.b4 cxb4 12.a6 b3 13.c5 b2 14.a7 Kb7 15.c6+ Kc7 16.Bh2+
+- (4.42 !) Depth: 64/73 00:01:36 272mN, tb=2239229
1.Bd2 Nd7 2.Be3 Kb6 3.b4 Nf6+ 4.Kd3
+- (4.61 !) Depth: 64/73 00:01:39 281mN, tb=2294198
1.Bd2 Na6 2.Ke5 Nb8 3.Ke6 Na6 4.a5 Nb8 5.Ke7 Na6 6.Be3 Nc7 7.Bf4 Na6 8.Kd8 Kb7 9.Be3 Nb4 10.Kd7 Nc6 11.Kd6 Nxa5 12.Kxc5 Ka6 13.b4 Nb3+ 14.Kd5 Na1 15.b5+ Kb7 16.c5
+- (4.88 !) Depth: 64/73 00:02:11 335mN, tb=2520517
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Kf6 Nb4 5.Bd2 Nc2 6.Bc3 Nd4 7.b4 Kb7 8.b5 Ne2 9.Bd2 Nd4 10.Be3
+- (5.29 !) Depth: 64/73 00:02:17 349mN, tb=2572142
1.Bd2 Kd7 2.Kd5 Na6 3.Be3
+- (5.90 !) Depth: 64/88 00:02:42 421mN, tb=3090221
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Na6 6.Kf5 Nb4 7.Bd2 Nc2 8.Bc3 Ne3+ 9.Ke4 Nf1 10.Kd3 Kb7 11.Be5 Ka6 12.Ke2
+- (6.81 !) Depth: 64/88 00:03:05 476mN, tb=3332443
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Nc2 6.Kd3 Nb4+ 7.Ke2 Na6 8.Kf3 Nb4 9.Kf4 Kc7 10.Bd2 Na6 11.Kg5 Kd6 12.Kf6 Kd7 13.Be3 Kd6 14.Kf7 Kd7 15.Bg1 Kd6 16.Ke8 Nb4 17.Be3 Ke5 18.Bxc5 Na6 19.b4
+- (8.18 !) Depth: 64/88 00:04:27 703mN, tb=6174541
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Nc2 6.Kd3 Nb4+ 7.Ke2 Na6 8.Kf3 Kd7 9.Kf4 Kd6 10.Bf2 Ke6 11.Ke4 Kd7 12.Kd5 Nb4+ 13.Kxc5 Nd3+ 14.Kb6 Nxf2 15.a6 Kd6 16.c5+ Kd7 17.c6+ Ke7 18.a7
+- (10.23 !) Depth: 64/88 00:04:44 754mN, tb=6426663
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Nc2 6.Kd3 Nb4+ 7.Ke2 Na6 8.Kf3 Kd7 9.Kf4 Kd6 10.Bf2 Ke6 11.Ke4 Kd6 12.Kf5 Kc6 13.Be1 Nc7 14.Bc3 Kb7 15.Be5 Na6 16.Ke6 Nb4 17.Bc3 Nd3 18.Bd2 Kc6 19.a6 Kb6 20.a7 Kxa7 21.Be3 Ka8 22.Kd6 Kb8 23.Bxc5 Kb7 24.Be3 Ka8 25.Kc7 Nb4 26.Bc5 Nc2 27.Kc6 Kb8 28.b4 Na3 29.Bd6+ Ka7 30.Kc5 Nc2 31.Bf4 Ne1 32.Bd2 Nd3+ 33.Kd5 Kb8 34.Kd4 Nb2 35.Bc1 Na4 36.Bf4+ Kb7 37.Be3 Kc7 38.b5 Nb6 39.c5 Nc8 40.Bf4+ Kd8 41.b6 Ne7 42.b7
+- (10.23) Depth: 64/88 00:04:54 780mN, tb=6673099
1.Bd2 Na6 2.Ke5 Nc7 3.Be3 Na6 4.Ke4 Nb4 5.a5 Nc2 6.Kd3 Nb4+ 7.Ke2 Na6 8.Kf3 Kd7 9.Kf4 Kd6 10.Bf2 Ke6 11.Ke4 Kd6 12.Kf5 Kc6 13.Be1 Nc7 14.Bc3 Kb7 15.Be5 Na6 16.Ke6 Kc6 17.Bc3 Nb8 18.Bb2 Na6 19.Be5 Nb4 20.Bc3 Nc2 21.Ke5 Ne3 22.Kf4 Nf1 23.Ke4 Ng3+ 24.Kd3 Nf5 25.Bd2 Ng7 26.Bf4 Ne6 27.Ke4 Kb7 28.Be5 Kc6 29.Kf5 Nd8 30.Bc3 Nf7 31.Bd2 Nd6+ 32.Ke5 Ne8 33.a6 Nc7 34.a7 Na8 35.Be3 Nb6 36.Ke6 Kc7 37.Bxc5 Na8 38.Ke7 Kc6 39.b4 Kc7 40.Kf6 Kc6 41.Ke5 Kd7 42.Bd4 Kc6 43.b5+ Kb7 44.b6 Ka6 45.Kd6
Bd2 is a win like almost every move if you continue correctly.
The main problem is that stockfish has no plan and
I believe that it can draw with white at least in fast time control because of not finding the right plan that it is to go with the king forward and force black into a zugzwang.

If you start when the king is at b1 or a1 then maybe it can draw even at longer time control because of having no plan.

having a constant score of 4.14 at depths 52-63 means that stockfish has no idea how to get progress before depth 64.
Top
fastgm
Posts: 818
Joined: Mon Aug 19, 2013 6:57 pm

Re: stockfish pruning weakness

Post by fastgm »

Newest Stockfish with 8 threads and 5-men tablebases solves this position very quickly.

1n6/8/2k5/2p5/P1P1K3/1PB5/8/8 w - -

Engine: Stockfish 200414 64 SSE4.2 syzygy (4096 MB)
von Tord Romstad, Marco Costalba and Joona

38/39 0:01 +3.04 1.Ke5 Sa6 2.Ld2 Sb8 3.a5 Sa6 4.Lc3 Sc7
5.b4 cxb4 6.Lxb4 Se8 7.Lf8 Sc7 8.Ld6 Sb5
9.Lb4 Sc7 10.Ke4 Sa6 11.La3 Sc7
12.Le7 Kd7 13.Lb4 Kc6 14.Kf5 (3.758.305) 3509
TB:44.937

39/48 0:01 +3.04 1.Ke5 Sa6 2.Ld2 Sb8 3.a5 Sa6 4.Lc3 Sc7
5.b4 cxb4 6.Lxb4 Se8 7.Lf8 Sc7 8.Ld6 Sb5
9.Lb4 Sc7 10.Ke4 Sa6 11.La3 Sc7
12.Le7 Kd7 13.Lb4 Kc6 14.La3 (4.290.353) 3566
TB:51.653

40/48 0:01 +3.04 1.Ke5 Sa6 2.Ld2 Sb8 3.a5 Sa6 4.Lc3 Sc7
5.b4 cxb4 6.Lxb4 Se8 7.Lf8 Sc7 8.Ld6 Sb5
9.Lb4 Sc7 10.Ke4 Sa6 11.La3 Sc7
12.Le7 Kd7 13.Lb4 Kc6 14.La3 (4.697.358) 3537
TB:56.283

41/48 0:01 +3.04 1.Ke5 Sa6 2.Ld2 Sb8 3.a5 Sa6 4.Lc3 Sc7
5.b4 cxb4 6.Lxb4 Se8 7.Lf8 Sc7 8.Ld6 Sb5
9.Lb4 Sc7 10.Ke4 Sa6 11.La3 Sc7
12.Le7 Kd7 13.Lb4 Kc6 14.La3 (5.156.434) 3524
TB:59.048

42/48 0:01 +3.04 1.Ke5 Sa6 2.Ld2 Sb8 3.a5 Sa6 4.Lc3 Sc7
5.b4 cxb4 6.Lxb4 Se8 7.Lf8 Sc7 8.Ld6 Sb5
9.Lb4 Sc7 10.Ke4 Sa6 11.La3 Sc7
12.Le7 Kd7 13.Lb4 Kc6 14.La3 (5.770.027) 3537
TB:63.648

43/48 0:01 +3.04 1.Ke5 Sa6 2.Ld2 Sb8 3.a5 Sa6 4.Lc3 Sc7
5.b4 cxb4 6.Lxb4 Se8 7.Lf8 Sc7 8.Ld6 Sb5
9.Lb4 Sc7 10.Ke4 Sa6 11.La3 Sc7
12.Le7 Kd7 13.Lb4 Kc6 14.La3 (6.441.779) 3508
TB:68.842

44/48 0:02 +3.04 1.Ke5 Sa6 2.Ld2 Sb8 3.a5 Sa6 4.Lc3 Sc7
5.b4 cxb4 6.Lxb4 Se8 7.Lf8 Sc7 8.Ld6 Sb5
9.Lb4 Sc7 10.Ke4 Sa6 11.La3 Sc7
12.Le7 Kd7 13.Lb4 Kc6 14.La3 (7.542.423) 3562
TB:81.130

45/62 0:02 +3.04 1.Ke5 Sa6 2.Ld2 Sb8 3.a5 Sa6 4.Lc3 Sc7
5.b4 cxb4 6.Lxb4 Se8 7.Lf8 Sc7 8.Ld6 Sb5
9.Lb4 Sc7 10.Ke4 Sa6 11.La3 Sc7
12.Le7 Kd7 13.Lb4 Kc6 14.La3 (8.665.021) 3625
TB:90.840

46/62 0:02 +3.04 1.Ke5 Sa6 2.Ld2 Sb8 3.a5 Sa6 4.Lc3 Sc7
5.b4 cxb4 6.Lxb4 Se8 7.Lf8 Sc7 8.Ld6 Sb5
9.Lb4 Sc7 10.Ke4 Sa6 11.La3 Sc7
12.Le7 Kd7 13.Lb4 Kc6 14.La3 (9.506.625) 3640
TB:95.676

47/62 0:03 +3.10++ 1.Ke5 Sa6 2.Ld2 Sb8 3.a5 Sa6 4.Lc3 Sc7
5.b4 cxb4 6.Lxb4 Se8 7.Ke6 Sg7+
8.Kf6 Se8+ 9.Kf7 Sc7 10.Ke7 Sb5
11.a6 Sa7 12.La5 Sc8+ 13.Ke6 Kc5
14.Kd7 (12.824.211) 3756 TB:137.737

47/62 0:03 +3.17++ 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf5 Kb6
4.Ld2 Sd7 5.Ke6 Kc6 6.Lf4 Sf8+ 7.Kf5 Sd7
8.a5 Kb7 9.Ke6 Sf8+ 10.Kd6 Ka6
11.Ld2 (13.562.324) 3739 TB:141.463

47/62 0:04 +3.26++ 1.Ke5 Sa6 2.Ld2 Sb8 3.a5 Sd7+ 4.Ke6 Sb8
5.b4 cxb4 6.Lxb4 Sa6 7.Ld6 Kb7 8.Kd5 Kc8
9.Kc6 (16.944.584) 3824 TB:156.989

47/62 0:06 +3.40++ 1.Ke5 Sa6 2.Ld2 Sc7 3.a5 Sa6 4.Ke6 Sc7+
5.Ke7 Sa6 6.Lc3 Kc7 7.Ke6 Kc6 8.Le1 Sc7+
9.Ke7 Sa6 10.Ld2 Kc7 11.Lc3 Kc6
12.Le1 Kc7 13.Lg3+ Kc6 14.Kd8 (24.875.581) 4110
TB:215.285

47/62 0:06 +3.61++ 1.Ke5 Sa6 2.Ld2 Sb8 3.a5 Sa6 4.Ke6 Sb8
5.Lc3 Sa6 6.Le1 Sc7+ 7.Ke7 Sa6 8.Ld2 Sb8
9.Lf4 Sa6 10.Kd8 Kb7 11.Kd7 Sb4
12.Kd6 Sd3 13.Le3 Ka6 14.Lxc5 (27.108.045) 4132
TB:227.577

47/62 0:08 +3.92++ 1.Ke5 Sa6 2.Ld2 Sc7 3.a5 Kd7 4.a6 Sxa6
5.Kd5 Kc7 6.Le3 Sb4+ 7.Kxc5 Sc2
8.Lf4+ Kb7 9.b4 Sa3 10.b5 Sc2 11.Le5 Se3
12.Kd4 Sc2+ 13.Kd3 Se1+ 14.Ke4 (35.001.204) 4288
TB:299.003

47/63 0:09 +4.39++ 1.Ke5 Sa6 2.Ld2 Sc7 3.a5 Sa6 4.Ke6 Sb8
5.Lc3 Sa6 6.Le1 Sc7+ 7.Ke7 Sa6 8.Ld2 Sb8
9.Lf4 Sa6 10.Kd8 Sb4 11.Kc8 Sa6
12.Ld2 Sc7 13.Lc3 Se6 14.Kb8 (41.249.436) 4388
TB:359.118

47/67 0:10 +5.09++ 1.Ke5 Sa6 2.Ld2 Sc7 3.a5 Se8 4.Ke6 Sg7+
5.Kf6 Sh5+ 6.Kf5 Sg7+ 7.Ke4 Se6 8.a6 Sc7
9.a7 Kb6 10.Lf4 Sa8 11.Kd5 Kxa7
12.Kd6 Sb6 13.Ld2 Sc8+ 14.Kxc5 (48.760.686) 4438
TB:410.597

47/67 0:13 +6.14++ 1.Ke5 Sa6 2.Ld2 Sc7 3.a5 Sa6 4.Ke6 Sb8
5.Lc3 Sd7 6.a6 Sb6 7.Ke7 Sc8+ 8.Kd8 Sd6
9.La5 Sf5 10.Kc8 Sd6+ 11.Kb8 (58.548.086) 4483
TB:462.091

47/67 0:16 +7.72++ 1.Ke5 Sa6 2.Ld2 Sc7 3.a5 Kd7 4.a6 Sxa6
5.Kd5 Sb8 6.Kxc5 Ke6 7.Lf4 Sd7+
8.Kd4 Sf6 9.b4 Sg8 10.b5 Sf6 11.c5 Kf5
12.b6 Sd7 13.b7 Kxf4 (71.920.715) 4400
TB:546.868

47/67 0:20 +10.08++ 1.Ke5 Sa6 2.Ld2 Sc7 3.a5 Sa6 4.Ke6 Kc7
5.Kd5 Kd7 6.Le3 Sc7+ 7.Kxc5 Se6+
8.Kb6 Sf8 9.a6 Sg6 10.a7 (89.291.276) 4446
TB:680.374

47/67 0:23 +10.08 1.Ke5 Sa6 2.Ld2 Sc7 3.a5 Kd7 4.a6 Kc6
5.a7 Kb7 6.a8L+ Sxa8 7.Kd5 Sb6+
8.Kxc5 Sa8 9.b4 Sc7 10.b5 Se6+
11.Kd6 Sc7 12.Le3 Se8+ 13.Ke5 Sc7
14.Ld4 (104.130.158) 4408 TB:786.506

48/67 0:25 +10.14++ 1.Ke5 Sa6 2.Ke6 Sb8 3.a5 Sa6 4.Le1 Sc7+
5.Ke7 Sa6 6.Ld2 Sb8 7.Ke6 Sd7 8.a6 Sf8+
9.Kf7 Sd7 10.La5 Se5+ 11.Ke7 Sg4
12.Kd8 Se3 13.Kc8 Kd6 14.a7 (108.588.982) 4189
TB:807.490

48/67 0:26 +10.20++ 1.Ke5 Sa6 2.Ke6 Sb8 3.a5 Sa6 4.Le1 Sc7+
5.Ke7 Sa6 6.Ld2 Sb8 7.Ke6 Sd7 8.a6 Sf8+
9.Kf7 Sd7 10.La5 Se5+ 11.Ke7 Sg4
12.Kd8 Se3 13.Kc8 Kd6 14.a7 (109.645.950) 4187
TB:811.568

48/67 0:26 +10.29++ 1.Ke5 Sa6 2.Ke6 Sb8 3.a5 Sa6 4.Le1 Sc7+
5.Ke7 Sa6 6.Ld2 Sb8 7.Ke6 Sd7 8.a6 Sf8+
9.Kf7 Sd7 10.La5 Se5+ 11.Ke7 Sg4
12.Kd8 Se3 13.Kc8 Kd6 14.a7 (110.364.962) 4172
TB:813.393

48/67 0:26 +10.43++ 1.Ke5 Sa6 2.Ke6 Sb8 3.a5 Sa6 4.Le1 Sc7+
5.Ke7 Sa6 6.Ld2 Sb8 7.Ke6 Sd7 8.a6 Sf8+
9.Kf7 Sd7 10.La5 Se5+ 11.Ke7 Sg4
12.Kd8 Se3 13.Kc8 Kd6 14.a7 (111.012.071) 4163
TB:814.258

48/67 0:26 +10.64++ 1.Ke5 Sa6 2.Ke6 Sb8 3.a5 Sa6 4.Le1 Sc7+
5.Ke7 Sa6 6.Ld2 Sb8 7.Ke6 Sd7 8.a6 Sf8+
9.Kf7 Sd7 10.La5 Se5+ 11.Ke7 Sg4
12.Kd8 Se3 13.Kc8 Kd6 14.a7 (112.016.266) 4156
TB:817.200

48/67 0:27 +10.96++ 1.Ke5 Sa6 2.Ke6 Sb8 3.a5 Sa6 4.Le1 Sc7+
5.Ke7 Sa6 6.Ld2 Sb8 7.Ke6 Sd7 8.a6 Sf8+
9.Kf7 Sd7 10.La5 Se5+ 11.Ke7 Sg4
12.Kd8 Se3 13.Kc8 Kd6 14.a7 (113.299.275) 4151
TB:821.287

48/67 0:27 +11.43++ 1.Ke5 Sa6 2.Ke6 Sb8 3.a5 Sa6 4.Le1 Sc7+
5.Ke7 Sa6 6.Ld2 Sb8 7.Ke6 Sd7 8.a6 Sf8+
9.Kf7 Sd7 10.La5 Se5+ 11.Ke7 Sg4
12.Kd8 Se3 13.Kc8 Kd6 14.a7 (114.642.256) 4147
TB:825.956

48/67 0:28 +12.13++ 1.Ke5 Sa6 2.Ke6 Sb8 3.a5 Sa6 4.Le1 Sc7+
5.Ke7 Sa6 6.Ld2 Sb8 7.Ke6 Sd7 8.a6 Sf8+
9.Kf7 Sd7 10.La5 Se5+ 11.Ke7 Sg4
12.Kd8 Se3 13.Kc8 Kd6 14.a7 (116.858.586) 4134
TB:833.147

48/67 0:29 +12.87 1.Ke5 Sa6 2.Ke6 Sb8 3.a5 Sa6 4.Le1 Sc7+
5.Ke7 Sa6 6.Ld2 Kc7 7.Lc3 Kc6 8.Le1 Kc7
9.Ke6 Kc6 10.Ld2 Kc7 11.Kd5 Kd7
12.Le3 Sb4+ 13.Kxc5 Sd3+ 14.Kd4 (124.389.006) 4147
TB:864.945

49/68 0:31 +12.93++ 1.Ke5 Sa6 2.Ke6 Sb8 3.a5 Sa6 4.Ke7 Kb7
5.Kd6 Sc7 6.Kxc5 Se6+ 7.Kd6 Sf4 8.b4 Se2
9.a6+ Ka7 10.Le5 Kxa6 11.b5+ Ka5
12.c5 Sg1 13.b6 Ka6 14.b7 (130.077.091) 4116
TB:890.818

49/68 0:32 +12.93 1.Ke5 Sd7+ 2.Ke6 Sb6 3.a5 Sc8 4.a6 Kb6
5.Ld2 Sa7 6.Le3 Sc6 7.Kd6 Sa5 8.a7 Kxa7
9.Kxc5 Kb7 10.b4 Sc6 11.b5 Se7
12.Lg5 Sf5 13.Ld2 Kc8 14.Kd5 (133.129.878) 4104
TB:902.708

50/68 0:33 +13.00++ 1.Ke5 Sd7+ 2.Ke6 Sb6 3.a5 Sc8 4.a6 Kb6
5.Ld2 Sa7 6.Le3 Sc6 7.Kd6 Sa5 8.a7 Kxa7
9.Kxc5 Kb7 10.b4 Sc6 11.b5 Se7
12.Lg5 Sf5 13.Ld2 Kc8 14.Kd5 (135.068.690) 4082
TB:912.768

50/70 0:34 +13.06++ 1.Ke5 Sd7+ 2.Ke6 Sb6 3.a5 Sc8 4.a6 Kb6
5.Ld2 Kxa6 6.Le3 Kb7 7.Lxc5 Kc6 8.b4 Kc7
9.Kd5 Kd8 10.b5 Kc7 11.Le3 Kd7
12.Lf4 Se7+ 13.Ke4 Sg8 14.Kd4 (139.757.983) 4052
TB:927.514

50/70 0:35 +13.15++ 1.Ke5 Sd7+ 2.Ke6 Sb8 3.a5 Sa6 4.Ke7 Sb8
5.Ld2 Sa6 6.Kd8 Kb7 7.Kd7 Sb8+ 8.Kd6 Sc6
9.Kxc5 Se5 10.Lc3 Sd3+ 11.Kd6 Sf4
12.b4 Se2 13.Le5 Sc1 14.b5 (144.608.519) 4029
TB:941.282

50/70 0:37 +13.29++ 1.Ke5 Sd7+ 2.Ke6 Sb8 3.a5 Sa6 4.Ke7 Sb8
5.Ld2 Sa6 6.Kd8 Kb7 7.Kd7 Sb8+ 8.Kd6 Sa6
9.Le3 Sc7 10.Kd7 Sa6 11.Lf2 Sb4
12.Lxc5 Sc2 13.Kd6 Sa1 14.b4 (150.788.944) 4014
TB:958.925

50/70 0:39 +13.50++ 1.Ke5 Sd7+ 2.Ke6 Sb8 3.a5 Sa6 4.Ke7 Sb8
5.Ld2 Sa6 6.Kd8 Sb4 7.Lxb4 cxb4 8.a6 Kb6
9.a7 Kc5 10.a8D (157.877.217) 3998
TB:977.490

50/70 0:40 +13.81++ 1.Ke5 Sd7+ 2.Ke6 Kc7 3.Le5+ Kd8 4.a5 Ke8
5.Kd5 Kf8 6.a6 Sb6+ 7.Kxc5 Sd7+
8.Kd6 Sb8 9.a7 (163.020.383) 3987
TB:991.460

50/70 0:42 +14.28++ 1.Ke5 Sd7+ 2.Ke6 Kc7 3.Le5+ Kd8 4.a5 Ke8
5.Kd5 Kf8 6.a6 Sb6+ 7.Kxc5 Sc8 8.Lb8 Kg8
9.a7 Se7 10.a8D Kh7 11.De4+ Sg6
12.Dxg6+ (170.928.498) 3989
TB:1.013.691

50/70 0:44 +14.98++ 1.Ke5 Sd7+ 2.Ke6 Kc7 3.Le5+ Kd8 4.a5 Ke8
5.Kd5 Kf8 6.a6 Sb6+ 7.Kxc5 Sc8 8.Lb8 Kg8
9.a7 Se7 10.a8D Kh7 11.De4+ Sg6
12.Dxg6+ (176.852.476) 3982
TB:1.030.759

50/70 0:46 +15.25 1.Ke5 Sd7+ 2.Ke6 Sb6 3.a5 Sc8 4.a6 Kb6
5.Ld2 Sa7 6.Le3 Sc6 7.Kd6 Sa5 8.a7 Kxa7
9.Kxc5 Kb7 10.b4 Sc6 11.b5 Se7
12.Lg5 Sc8 13.Lf4 Se7 14.Kd6 (183.085.240) 3975
TB:1.049.041

51/70 0:46 +15.31++ 1.Ke5 Sd7+ 2.Ke6 Sb6 3.a5 Sc8 4.a6 Kb6
5.Ld2 Sa7 6.Le3 Sc6 7.Kd6 Sa5 8.a7 Kxa7
9.Kxc5 Kb7 10.b4 Sc6 11.b5 Se7
12.Lg5 Sc8 13.Lf4 Se7 14.Kd6 (185.120.404) 3945
TB:1.057.818

51/70 0:47 +14.59-- 1.Ke5 Sd7+ 2.Ke6 Sb6 3.a5 Sc8 4.a6 Kb6
5.Ld2 Kxa6 6.Le3 Kb6 7.b4 Kc7 8.Lxc5 Kc6
9.Ke5 Kb7 10.b5 Kc7 11.Kd5 Kb7
12.Le3 Kb8 13.c5 Sa7 14.b6 (185.920.427) 3923
TB:1.061.832

51/70 0:47 +15.37++ 1.Ke5 Sd7+ 2.Ke6 Sb6 3.a5 Sc8 4.a6 Kb6
5.Ld2 Kxa6 6.Le3 Kb6 7.b4 Kc7 8.Lxc5 Kc6
9.Ke5 Kb7 10.b5 Kc7 11.Kd5 Kb7
12.Le3 Kb8 13.c5 Sa7 14.b6 (186.931.681) 3917
TB:1.064.291

51/71 0:48 +15.51++ 1.Ke5 Sd7+ 2.Ke6 Sb6 3.a5 Sc8 4.a6 Kb6
5.Ld2 Kxa6 6.Le3 Kb6 7.b4 Kc7 8.Lxc5 Kc6
9.Ke5 Kb7 10.b5 Kc7 11.Ke6 Kb7
12.Kd7 Kb8 13.Ld4 Kb7 14.c5 (188.550.806) 3881
TB:1.071.160

51/71 0:49 +15.72++ 1.Ke5 Sd7+ 2.Ke6 Sb6 3.a5 Sc8 4.a6 Kb6
5.Ld2 Kxa6 6.Le3 Kb6 7.b4 Kc7 8.Lxc5 Kc6
9.Ke5 Kb7 10.b5 Ka8 11.Le3 Kb7
12.Ke6 Kc7 13.c5 Kd8 14.Lg5+ (190.069.931) 3848
TB:1.076.041

51/71 0:50 +14.43-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Kc7 7.Ld2 Kc6 8.Kd8 Kd6
9.Kc8 Kc6 10.Lf4 Sb4 11.Le3 Sa6
12.Ld2 Sc7 13.Kb8 Sa6+ 14.Ka7 (192.706.895) 3816
TB:1.083.844

51/71 0:50 +16.04++ 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Kc7 7.Ld2 Kc6 8.Kd8 Kd6
9.Kc8 Kc6 10.Lf4 Sb4 11.Le3 Sa6
12.Ld2 Sc7 13.Kb8 Sa6+ 14.Ka7 (193.760.796) 3802
TB:1.087.031

51/71 0:51 +16.04 1.Ke5 Sd7+ 2.Ke6 Sb6 3.a5 Sc8 4.a6 Kb6
5.Ld2 Sa7 6.Le3 Sc6 7.Kd6 Sa5 8.a7 Kxa7
9.Kxc5 Kb7 10.b4 Sc6 11.b5 Se7
12.Lg5 Sc8 13.Kd4 Kb6 14.Le3 (195.783.111) 3769
TB:1.091.717

52/71 0:52 +15.72-- 1.Ke5 Kd7 2.Kd5 Sa6 3.a5 Kc7 4.Le5+ Kc8
5.Kd6 Kb8 6.Kc6+ Kc8 7.Lc3 Kb8 8.Kd7 Ka8
9.Ld2 Kb7 10.Le3 Sb4 11.Lxc5 Sc2
12.Kd6 Sa1 13.b4 Sb3 14.Kd5 (196.705.457) 3746
TB:1.096.115

52/71 0:52 +16.10++ 1.Ke5 Kd7 2.Kd5 Sa6 3.a5 Kc7 4.Le5+ Kc8
5.Kd6 Kb8 6.Kc6+ Kc8 7.Lc3 Kb8 8.Kd7 Ka8
9.Ld2 Kb7 10.Le3 Sb4 11.Lxc5 Sc2
12.Kd6 Sa1 13.b4 Sb3 14.Kd5 (197.791.712) 3733
TB:1.097.935

52/71 0:53 +16.19++ 1.Ke5 Kd7 2.Kd5 Sa6 3.a5 Kc7 4.Le5+ Kb7
5.Ld6 Sb4+ 6.Kxc5 Sc2 7.b4 Kc8 8.Le5 Se1
9.Lc3 Sc2 10.a6 Sa3 11.b5 Sb1 12.Ld4 Sa3
13.Kd5 Kd7 14.a7 (199.454.207) 3710
TB:1.102.742

52/71 0:54 +16.33++ 1.Ke5 Kd7 2.Kd5 Sa6 3.a5 Kc7 4.Le5+ Kb7
5.Ld6 Sb4+ 6.Kxc5 Sd3+ 7.Kd5 Sc1
8.b4 Sa2 9.Lc5 Sc3+ 10.Ke5 Kc6
11.Ld4 Sa2 12.b5+ Kc7 13.Lc5 Sc1
14.Kd5 (201.032.210) 3687
TB:1.106.415

52/71 0:55 +16.33 1.Ke5 Sd7+ 2.Ke6 Sb6 3.a5 Sc8 4.a6 Kb6
5.Ld2 Sa7 6.Le3 Sc6 7.Kd6 Sa5 8.a7 Kxa7
9.Kxc5 Kb7 10.b4 Sc6 11.b5 Se7
12.Lg5 Sc8 13.Kd4 Kb6 14.Le3 (202.275.397) 3674
TB:1.110.503

53/71 0:55 +16.04-- 1.Ke5 Sd7+ 2.Ke6 Sb6 3.a5 Sc8 4.a6 Kb6
5.Ld2 Kxa6 6.Le3 Kb6 7.Kd7 Sa7 8.b4 Kb7
9.Lxc5 Sc6 10.Ke6 Kc7 11.b5 Sa5
12.Kd5 Sb3 13.Le3 Sa1 14.c5 (202.868.318) 3659
TB:1.112.968

53/71 0:55 +16.39++ 1.Ke5 Sd7+ 2.Ke6 Sb6 3.a5 Sc8 4.a6 Kb6
5.Ld2 Kxa6 6.Le3 Kb6 7.b4 Kc7 8.Lxc5 Kc6
9.Ke5 Kc7 10.b5 Kd8 11.Ke6 Kc7
12.Kd5 Kb8 13.Ke6 Kc7 (203.040.581) 3656
TB:1.113.845

53/71 0:56 +16.49++ 1.Ke5 Sd7+ 2.Ke6 Sb6 3.a5 Sc8 4.a6 Kb6
5.Ld2 Kc6 6.La5 Sa7 7.Ke7 Sc8+ 8.Kd8 Sd6
9.Lc7 Sf7+ 10.Kc8 Sd6+ 11.Lxd6 Kxd6
12.a7 Ke5 13.a8D Kf4 14.Df3+ (203.854.592) 3640
TB:1.117.434

53/72 0:56 +16.63++ 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.Kxc5 Se5 10.b4 Sd3+ 11.Kd4 Sb2
12.Kd5 Sd1 13.b5 Kc7 14.a6 (205.682.016) 3608
TB:1.121.836

53/73 0:58 +15.72-- 1.Ke5 Kd7 2.Kd5 Sa6 3.a5 Kc7 4.Le5+ Kc8
5.Ld6 Kd7 6.Lf4 Kc8 7.Le5 Sb4+
8.Kxc5 Sd3+ 9.Kd4 Sb4 10.a6 Sc6+
11.Kd5 Sb4+ 12.Kc5 Sd3+ 13.Kb6 Sxe5
14.a7 (208.648.219) 3573
TB:1.133.737

53/73 0:58 +16.84++ 1.Ke5 Kd7 2.Kd5 Sa6 3.a5 Kc7 4.Le5+ Kc8
5.Ld6 Kd7 6.Lf4 Kc8 7.Kd6 Sb4 8.Le3 Sd3
9.Lxc5 Kb7 10.b4 Sb2 11.Kd5 Sd3
12.b5 Kc7 13.a6 Sf4+ 14.Ke4 (209.700.232) 3560
TB:1.136.800

53/73 1:00 +17.31++ 1.Ke5 Kd7 2.Kd5 Sa6 3.a5 Kc7 4.Le5+ Kc8
5.Ld6 Kd7 6.Lf4 Kc8 7.Le5 Kd7 8.Lc3 (213.019.149) 3532
TB:1.144.364

53/73 1:01 +18.01++ 1.Ke5 Kd7 2.Kd5 Sa6 3.a5 Kc7 4.Le5+ Kc8
5.Ld6 Kd7 6.Lf4 Kc8 7.Le5 Kd7 8.Ld6 Sb4+
9.Kxc5 Sc6 10.a6 Sd8 11.a7 Sb7+
12.Kd5 (216.245.783) 3504
TB:1.152.701

53/73 1:03 +19.06++ 1.Ke5 Kd7 2.Kd5 Sa6 3.a5 Kc7 4.Le5+ Kc8
5.Ld6 Kd7 6.Lf4 Kc8 7.Le5 Kd7 8.Ld6 Sb4+
9.Kxc5 Sc6 10.a6 Sd8 11.a7 Sb7+
12.Kd5 (220.265.410) 3469
TB:1.165.338

53/73 1:04 +15.36-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.Kxc5 Se5 10.b4 Sd3+ 11.Kd5 Kc8
12.b5 Kd8 13.a6 Ke7 14.a7 (222.921.169) 3451
TB:1.171.787

53/73 1:05 +20.63++ 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.Kxc5 Se5 10.b4 Sd3+ 11.Kd5 Kc8
12.b5 Kd8 13.a6 Ke7 14.a7 (224.528.609) 3423
TB:1.180.096

53/73 1:08 +24.17++ 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.Kxc5 Se5 10.b4 Sd3+ 11.Kd5 Kc8
12.b5 Kd8 13.a6 Ke7 14.a7 (230.640.413) 3381
TB:1.224.520

53/73 1:10 +29.48++ 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sa5 11.a7 Kxa7
12.Kxc5 Kb7 13.b4 Sc6 14.b5 (234.373.714) 3336
TB:1.245.069

53/74 1:11 +37.43++ 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sa5 11.a7 Kxa7
12.Kxc5 Kb7 13.b4 Sc6 14.b5 (237.409.964) 3299
TB:1.260.846

53/78 1:15 +49.37++ 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sa5 11.a7 Kxa7
12.Kxc5 Kb7 13.b4 Sc6 14.b5 (249.600.554) 3306
TB:1.308.396

53/78 1:15 +49.37 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sd4 11.a7 Kb7
12.Kxc5 Se2 13.a8D+ Kxa8 14.Ld2 (250.005.925) 3303
TB:1.310.417

54/78 1:15 +49.37 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sd4 11.a7 Kb7
12.Kxc5 Se2 13.a8D+ Kxa8 14.Ld2 (250.021.486) 3302
TB:1.310.455

55/78 1:15 +49.13-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sd4 11.a7 Kb7
12.Kxc5 Se2 13.a8D+ Kxa8 14.Ld2 (250.029.139) 3302
TB:1.310.509

55/78 1:15 +48.15-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sd4 11.a7 Kb7
12.Kxc5 Sf5 13.a8D+ Kxa8 14.Ld2 (250.047.480) 3301
TB:1.310.518

55/78 1:15 +47.90-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sd4 11.a7 Kb7
12.Kxc5 Sf3 13.a8L+ Kxa8 14.Kd5 (250.055.864) 3301
TB:1.310.519

55/78 1:15 +47.74-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sd4 11.a7 Kb7
12.Kxc5 Sf3 13.a8L+ Kxa8 14.Kd5 (250.064.980) 3300
TB:1.310.519

55/78 1:15 +49.37 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sd4 11.a7 Kb7
12.Kxc5 Sf5 13.a8D+ Kxa8 14.Ld2 (250.131.884) 3298
TB:1.310.678

56/78 1:15 +48.15-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sd4 11.a7 Kb7
12.Kxc5 Sf5 13.a8D+ Kxa8 14.Ld2 (250.133.665) 3298
TB:1.310.680

56/78 1:15 +47.90-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sd4 11.a7 Kb7
12.Kxc5 Sf5 13.a8D+ Kxa8 14.Ld2 (250.135.651) 3298
TB:1.310.680

56/78 1:15 +47.74-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sd4 11.a7 Kb7
12.Kxc5 Sf5 13.a8D+ Kxa8 14.Ld2 (250.136.598) 3298
TB:1.310.680

56/78 1:15 +47.60-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sd4 11.a7 Kb7
12.Kxc5 Sf5 13.a8D+ Kxa8 14.Ld2 (250.140.298) 3298
TB:1.310.710

56/78 1:15 +45.25-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sd4 11.a7 Kb7
12.Kxc5 Sf5 13.a8D+ Kxa8 14.Ld2 (250.142.213) 3298
TB:1.310.740

56/78 1:15 +42.08-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sd4 11.a7 Kb7
12.Kxc5 Sf5 13.a8D+ Kxa8 14.Ld2 (250.142.915) 3298
TB:1.310.740

56/78 1:15 +41.47-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sd4 11.a7 Kb7
12.Kxc5 Sf5 13.a8D+ Kxa8 14.Ld2 (250.144.638) 3297
TB:1.310.750

56/78 1:15 +49.37 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sd4 11.a7 Kb7
12.Kxc5 Sf5 13.a8D+ Kxa8 14.Ld2 (250.251.205) 3296
TB:1.311.063

57/78 1:15 +41.47-- 1.Ke5 Sd7+ 2.Ke6 Sb6 3.a5 Sc8 4.a6 Kb6
5.Ld2 Kxa6 6.Le3 Kb7 7.Lxc5 Kc7 8.b4 Kc6
9.Ke5 Kc7 10.b5 Kd7 11.Kd5 Kc7
12.Ke6 Kb7 13.Kd7 Ka8 14.Le3 (250.261.988) 3296
TB:1.311.133

57/78 1:15 +38.21-- 1.Ke5 Sd7+ 2.Ke6 Sb6 3.a5 Sc8 4.a6 Kb6
5.Ld2 Kxa6 6.Le3 Kb6 7.b4 Kc7 8.Lxc5 Kc6
9.Ke5 Kc7 10.b5 Kd7 11.Kd5 Kc7
12.Ke6 Kb7 13.Le3 Kc7 14.c5 (250.271.890) 3295
TB:1.311.257

57/78 1:16 +37.43-- 1.Ke5 Sd7+ 2.Ke6 Sb6 3.a5 Sc8 4.a6 Kb6
5.Ld2 Sa7 6.Le3 Sc6 7.Kd6 Sd4 8.a7 Kb7
9.Kxc5 Sf5 10.a8D+ Kxa8 11.Ld2 Kb7
12.b4 Kc8 13.b5 Kd7 14.Lf4 (250.505.977) 3293
TB:1.311.827

57/78 1:17 +49.37 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sd4 11.a7 Kb7
12.Kxc5 Sf5 13.a8D+ Kxa8 14.Ld2 (253.682.623) 3281
TB:1.324.031

58/78 1:18 +49.43++ 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Kb7 8.Kd6 Sc6
9.a6+ Kb6 10.Le3 Sd4 11.a7 Kb7
12.Kxc5 Sf5 13.a8D+ Kxa8 14.Ld2 (256.724.201) 3280
TB:1.331.074

58/78 1:18 +49.04-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sb8 7.Ld2 Sa6 8.Kd8 Kd6
9.Kc8 Kc6 10.Lf4 Sb4 11.Le3 Sc2
12.Ld2 Sd4 13.Kb8 Sxb3 14.Lc3 (256.987.502) 3277
TB:1.331.279

58/78 1:18 +48.50-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Kb7 8.Kd7 Sa6
9.Le3 Sb4 10.Lxc5 Sd3 11.Kd6 Sb2
12.Kd5 Sd1 13.b4 Sc3+ 14.Kd6 (257.357.688) 3276
TB:1.331.545

58/78 1:20 +49.49++ 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Kb7 8.Kd7 Sa6
9.Le3 Sb4 10.Lxc5 Sd3 11.Kd6 Sb2
12.Kd5 Sd3 13.Ld6 Se1 14.b4 (261.546.567) 3257
TB:1.340.626

58/78 1:20 +49.49 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kb7 14.Kxc5 (262.245.111) 3249
TB:1.341.712

59/78 1:20 +49.49 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kb7 14.Kxc5 (262.637.080) 3248
TB:1.343.844

60/78 1:21 +49.49 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kb7 14.Kxc5 (263.124.935) 3240
TB:1.345.419

61/78 1:21 +49.43-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kb7 14.Kxc5 (263.134.647) 3239
TB:1.345.428

61/78 1:21 +49.37-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kb7 14.Kxc5 (263.135.868) 3239
TB:1.345.428

61/78 1:21 +49.09-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kb7 14.Kxc5 (263.137.111) 3239
TB:1.345.428

61/78 1:21 +48.72-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kb7 14.Kxc5 (263.137.720) 3239
TB:1.345.428

61/78 1:21 +48.50-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kb7 14.Kxc5 (263.138.327) 3239
TB:1.345.428

61/78 1:21 +48.15-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kb7 14.Kxc5 (263.139.103) 3239
TB:1.345.428

61/78 1:21 +47.60-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kb7 14.Kxc5 (263.140.393) 3239
TB:1.345.429

61/78 1:21 +46.74-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kb7 14.Kxc5 (263.141.759) 3239
TB:1.345.452

61/78 1:21 +45.25-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kb7 14.Kxc5 (263.142.602) 3239
TB:1.345.452

61/78 1:21 +42.47-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kb7 14.Kxc5 (263.143.159) 3239
TB:1.345.452

61/78 1:21 +38.84-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kb7 14.Kxc5 (263.146.096) 3238
TB:1.345.457

61/78 1:21 +34.51-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kb7 14.Kxc5 (263.214.484) 3237
TB:1.345.642

61/78 1:23 +49.55++ 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kb7 14.Kxc5 (268.341.540) 3230
TB:1.357.284

61/78 1:27 +53.39 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kxa7 14.Kxc5 (291.762.524) 3321
TB:1.412.931

62/78 1:27 +53.31-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kxa7 14.Kxc5 (291.828.580) 3320
TB:1.413.153

62/78 1:27 +53.23-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kxa7 14.Kxc5 (291.830.073) 3320
TB:1.413.155

62/78 1:27 +52.61-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kxa7 14.Kxc5 (291.830.960) 3320
TB:1.413.158

62/78 1:27 +51.93-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sc6 11.a6+ Kb6
12.Le3 Sd4 13.a7 Kxa7 14.Kxc5 (291.833.720) 3319
TB:1.413.160

62/78 1:28 +51.64-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sa6 11.Le3 Sc7
12.Kd7 Sa6 13.Kd6 (292.149.453) 3317
TB:1.413.732

62/78 1:28 +51.32-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sa6 11.Le3 Sc7
12.Kd7 Sa6 13.Kd6 (292.149.867) 3317
TB:1.413.732

62/78 1:28 +50.33-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sa6 11.Le3 Sc7
12.Kd7 Sa6 13.Kd6 (292.150.252) 3317
TB:1.413.732

62/78 1:28 +49.55-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sa6 11.Le3 Sc7
12.Kd7 Sa6 13.Kd6 (292.155.171) 3317
TB:1.413.748

62/78 1:28 +48.24-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sa6 11.Le3 Sc7
12.Kd7 Sa6 13.Kd6 (292.688.546) 3318
TB:1.417.221

62/78 1:28 +43.43-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sa6 11.Le3 Sc7
12.Kd7 Sa6 13.Kd6 (292.689.775) 3318
TB:1.417.224

62/78 1:28 +38.84-- 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sa6 11.Le3 Sc7
12.Kd7 Sa6 13.Kd6 (292.690.194) 3318
TB:1.417.224

62/78 1:30 +53.45++ 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sa6 11.Le3 Sc7
12.a6+ Kc8 13.a7 Kb7 14.a8D+ (302.824.078) 3341
TB:1.432.370

62/78 1:36 +58.75++ 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sa6 11.Le3 Sc7
12.a6+ Kc8 13.a7 Kb7 14.a8D+ (325.137.223) 3375
TB:1.488.319

62/78 1:42 +66.71++ 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sa6 11.Le3 Sc7
12.a6+ Kc8 13.a7 Kb7 14.a8D+ (349.011.774) 3420
TB:1.553.705

62/78 1:47 +78.65++ 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sa6 11.Le3 Sc7
12.a6+ Kc8 13.a7 Kb7 14.a8D+ (367.114.737) 3427
TB:1.594.335

62/78 1:52 +96.55++ 1.Ke5 Sd7+ 2.Ke6 Sf8+ 3.Kf7 Sd7 4.a5 Sb8
5.Ke6 Sa6 6.Ke7 Sc7 7.Ld2 Sa6 8.Kd8 Kb7
9.Kd7 Sb8+ 10.Kd6 Sa6 11.Kd7 (386.040.353) 3435
TB:1.642.961
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fastgm
Posts: 818
Joined: Mon Aug 19, 2013 6:57 pm

Re: stockfish pruning weakness

Post by fastgm »

[D]1n6/8/2k5/2p5/P1P5/1PB5/8/1K6 w - -

Engine: Stockfish 200414 64 SSE4.2 syzygy (4096 MB)
von Tord Romstad, Marco Costalba and Joona

73/91 1:18 +3.20 1.Le5 Sa6 2.Kc2 Sb4+ 3.Kd2 Sa6 4.Lc3 Sb8
5.Kd3 Sa6 6.Ke4 Sc7 7.Le5 Sa6 8.Lf4 Sb4
9.Le3 Sc2 10.Kd3 Sb4+ 11.Kd2 Sa6
12.Kc3 Sb4 13.Lf4 Sa2+ 14.Kd3 (421.276.909) 5337
TB:2.762.673

74/91 1:25 +3.20 1.Le5 Sa6 2.Kc2 Sb4+ 3.Kd2 Sa6 4.Lc3 Sb8
5.Kd3 Sa6 6.Ke4 Sc7 7.Le5 Sa6 8.Lf4 Sb4
9.Le3 Sc2 10.Kd3 Sb4+ 11.Kd2 Sa6
12.Kc3 Sb4 13.Lf4 Sa2+ 14.Kd3 (456.440.931) 5333
TB:2.880.817

75/91 1:31 +3.20 1.Le5 Sa6 2.Kc2 Sb4+ 3.Kd2 Sa6 4.Lc3 Sb8
5.Kd3 Sa6 6.Ke4 Sc7 7.Le5 Sa6 8.Lf4 Sb4
9.Le3 Sc2 10.Kd3 Sb4+ 11.Kd2 Sa6
12.Kc3 Sb4 13.Lf4 Sa6 14.Le3 (486.834.230) 5296
TB:2.957.454

76/91 1:56 +3.20 1.Le5 Sa6 2.Kc2 Sb4+ 3.Kd2 Sa6 4.Lc3 Sb8
5.Kd3 Sa6 6.Ke4 Sc7 7.Le5 Sa6 8.Lf4 Sb4
9.Le3 Sc2 10.Kd3 Sb4+ 11.Kd2 Sa6
12.Kc3 Sb4 13.Lf4 Sa6 14.Kd2 (648.316.863) 5579
TB:4.264.476

77/91 2:22 +3.26++ 1.Le5 Sa6 2.Kc2 Sb4+ 3.Kd2 Sa6 4.Lf6 Kd6
5.Kd3 Kc7 6.Ke4 Kc6 7.Kf5 Kd6 8.Lc3 Kc6
9.Ke6 Sc7+ 10.Ke7 Sa6 (797.619.924) 5606
TB:5.231.641

77/91 2:28 +3.32++ 1.Le5 Sa6 2.Kc2 Kb7 3.Lg3 Sb4+ 4.Kc3 Sa2+
5.Kd2 Sb4 6.Le5 Kb6 7.Lc3 Sa6 8.a5+ Kb7
9.Ke2 Sc7 10.Ke3 Sa6 11.Kd3 Kc6
12.Le1 Sc7 13.Lf2 Sa6 14.Le3 (827.123.822) 5551
TB:5.323.994

77/91 2:32 +3.41++ 1.Le5 Sa6 2.Kc2 Kb7 3.Lg3 Sb4+ 4.Kc3 Kb6
5.Le5 Sc6 6.Ld6 Sb4 7.a5+ Kc6 8.Lg3 Kb7
9.Lf2 Kc6 10.Le3 Kd6 11.Kd2 Kc6
12.Ke2 Sa6 13.Lf4 Kb7 14.Ld2 (844.805.285) 5547
TB:5.363.132

77/91 2:36 +3.55++ 1.Le5 Sa6 2.Kc2 Kb7 3.Kd3 Kc6 4.Lg3 Sb4+
5.Kc3 Kd7 6.Le5 Ke6 7.Lf4 Sc6 8.Ld2 Ke5
9.Kd3 Ke6 10.a5 Kd6 11.Ke4 Sd4 12.b4 Sb3
13.Lf4+ Kd7 14.a6 (867.056.527) 5524
TB:5.409.967

77/91 3:05 +3.76++ 1.Le5 Sd7 2.Lf4 Kb7 3.Kc2 Sb6 4.Kd3 Ka6
5.Ld2 Sd7 6.Lc3 Kb6 7.Ke4 Ka6 8.Kd5 Kb7
9.Kd6 Kc8 10.a5 (973.550.752) 5256
TB:6.234.410

77/91 3:36 +4.08++ 1.Le5 Sa6 2.Kc2 Kb7 3.Kd3 Sb4+ 4.Kd2 Kc6
5.Lc3 Sa6 6.Ke3 Kb6 7.Kd3 Sb8 8.Ke4 Kc6
9.a5 Sa6 10.Kf5 Kd6 11.Le5+ Kd7
12.Lb2 Sc7 13.Lc3 Sa6 14.Ke5 (1.038.678.738) 4788
TB:6.481.344

77/91 3:46 +4.55++ 1.Le5 Sa6 2.Kc2 Kb7 3.Kd3 Sb4+ 4.Kd2 Sa6
5.Ke3 Ka7 6.Ke4 Kb6 7.Kd5 Sb4+ 8.Kd6 Sa2
9.Lf4 Sc3 10.Le3 Se4+ 11.Ke5 Sc3
12.b4 Sxa4 13.Kd6 Kb7 14.Lxc5 (1.087.204.113) 4791
TB:6.624.102

77/93 4:10 +5.25++ 1.Le5 Sa6 2.Kc2 Kb6 3.Kd3 Kc6 4.Lf6 Kd7
5.a5 Ke6 6.Lh4 Kf5 7.Lg3 Kg4 8.Ld6 Kf3
9.Kc3 Ke2 10.Lxc5 Sxc5 11.b4 Sd3
12.a6 Sf4 13.a7 (1.181.917.802) 4719
TB:7.124.321

77/94 4:47 +5.25 1.Le5 Sa6 2.Kc2 Kb6 3.Kd3 Kc6 4.Lf6 Kd7
5.a5 Ke6 6.Lh4 Kf5 7.Lg3 Ke6 8.Ke4 Sb4
9.Le1 Sa6 10.Ld2 Kd6 11.Le3 Ke6
12.Lg5 Kd6 13.Lf4+ Kc6 14.Ld2 (1.350.612.784) 4693
TB:7.917.501

78/94 5:03 +5.31++ 1.Le5 Sa6 2.Kc2 Kb6 3.Kd3 Kc6 4.Lf6 Kd7
5.a5 Ke6 6.Lh4 Kf5 7.Lg3 Ke6 8.Ke4 Sb4
9.Le5 Ke7 10.Lc3 Sa6 11.Ke5 Kf7
12.Kd6 Kg6 13.Ld2 Kf5 14.Le3 (1.416.290.107) 4673
TB:8.050.605

78/94 9:14 +5.37++ 1.Le5 Sa6 2.Kc2 Kb6 3.Kd3 Kc6 4.Lf6 Sb4+
5.Ke4 Sa2 6.Lg5 Sb4 7.a5 Sc2 8.Kd3 Sb4+
9.Ke2 Sa6 10.Ld2 Kd6 11.Kd3 Ke5
12.Lh6 Sc7 13.Lf8 Sa6 14.Kd2 (1.574.465.289) 2838
TB:8.159.842

78/94 9:42 +5.37 1.Le5 Sa6 2.Kc2 Kb6 3.Kd3 Kc6 4.Lf6 Sb4+
5.Ke4 Sa2 6.Lg5 Sb4 7.a5 Sc2 8.Kd3 Sb4+
9.Ke2 Sa6 10.Ld2 Kd6 11.Kd3 Ke5
12.Lh6 Sb4+ 13.Ke3 Kd6 14.Lf8+ (1.702.899.335) 2923
TB:8.909.239

79/94 9:57 +5.43++ 1.Le5 Sa6 2.Kc2 Kb6 3.Kd3 Kc6 4.Lf6 Sb4+
5.Ke4 Sa2 6.Lg5 Sb4 7.a5 Sc2 8.Kd3 Sb4+
9.Ke2 Sa6 10.Ld2 Kd6 11.Kd3 Ke5
12.Lh6 Sb4+ 13.Ke3 Kd6 14.Lf8+ (1.765.404.507) 2956
TB:9.032.354

79/96 10:04 +5.50++ 1.Le5 Sa6 2.Kc2 Kb6 3.Kd3 Kc6 4.Lf6 Kb6
5.Ke4 Kc6 6.Lc3 Kd6 7.Ld2 Ke6 8.Le3 Kd6
9.a5 Sb4 10.Ld2 Sa6 11.Lf4+ Kc6
12.Le3 Kd7 13.Kd5 Sb4+ 14.Kxc5 (1.799.799.434) 2977
TB:9.072.332

79/97 10:17 +5.59++ 1.Le5 Sa6 2.Kc2 Kb6 3.Kd3 Kc6 4.Lf6 Sb8
5.Lc3 Sa6 6.Kc2 Sc7 7.a5 Sa6 8.Kd2 Kd6
9.Lg7 Kc6 10.Lh6 Sb8 11.Ke3 Kb7
12.Kd3 Sc6 13.Ld2 Sb8 14.Kc2 (1.844.221.742) 2986
TB:9.128.325

79/97 10:29 +5.59 1.Le5 Sa6 2.Kc2 Kb6 3.Kd3 Kc6 4.Lf6 Sb8
5.Lc3 Sa6 6.Kc2 Sc7 7.a5 Sa6 8.Kd2 Kb7
9.Ke3 Sb8 10.Ke4 Kc6 11.Ld2 Sa6
12.Ke5 Sc7 13.Lc3 Sa6 14.Ke6 (1.895.335.955) 3010
TB:9.267.939

80/97 10:40 +5.65++ 1.Le5 Sa6 2.Kc2 Kb6 3.Kd3 Kc6 4.Lf6 Sb8
5.Lc3 Sa6 6.Kc2 Sc7 7.a5 Sa6 8.Kd2 Sb4
9.Lxb4 cxb4 10.a6 Kc5 11.a7 Kd4
12.a8D (1.939.789.258) 3027
TB:9.336.963

80/97 10:53 +5.71++ 1.Le5 Sa6 2.Kc2 Kb6 3.Kd3 Kc6 4.Lf6 Sb4+
5.Ke4 Sa2 6.Lg5 Sb4 7.a5 Sa6 8.Lf6 Sc7
9.Lc3 Sa6 10.Ke5 Sc7 11.Ke4 (2.004.746.051) 3069
TB:9.406.807

80/97 11:03 +5.81++ 1.Le5 Sa6 2.Kc2 Kb6 3.Kd3 Kc6 4.Lf6 Sb8
5.Lc3 Sd7 6.Ke4 Sb8 7.Ld2 Kb7 8.Kd5 Sd7
9.a5 Sf6+ 10.Ke6 Se4 11.Lf4 Sc3
12.Le3 Kc6 13.a6 Kb6 14.Lxc5+ (2.058.610.630) 3104
TB:9.489.114

80/97 11:17 +5.94++ 1.Le5 Sd7 2.Lg3 Sf8 3.Kc2 Sg6 4.Kd3 Kb7
5.a5 Kc6 6.a6 Sf8 7.Ke4 Sd7 8.Lf4 Kb6
9.Kf5 Kxa6 10.Ke6 Sf8+ 11.Kd6 Sh7
12.Kxc5 Sf8 13.Le5 Sh7 14.Lc3 (2.120.233.312) 3131
TB:9.552.378

80/97 11:44 +5.98 1.Le5 Sa6 2.Kc2 Kb6 3.Kd3 Kc6 4.Lf6 Sb4+
5.Ke4 Sa2 6.Lb2 Sb4 7.Lc3 Sa6 8.a5 Kd6
9.Lb2 Kc6 10.Le5 Sb4 11.Kf5 Kd7
12.Lc3 Sa6 13.Ke5 Kc6 14.Ld2 (2.232.625.118) 3166
TB:9.798.815

81/97 12:08 +5.98 1.Le5 Sa6 2.Kc2 Kb6 3.Kd3 Kc6 4.Lf6 Sb4+
5.Ke4 Sa2 6.Lb2 Sb4 7.Lc3 Sa6 8.a5 Kd6
9.Lb2 Kc6 10.Le5 Sb4 11.Kf5 Kd7
12.Lc3 Sa6 13.Ke5 Kc6 14.Ld2 (2.326.164.607) 3194
TB:10.047.347

82/97 12:23 +5.98 1.Le5 Sa6 2.Kc2 Kb6 3.Kd3 Kc6 4.Lf6 Sb4+
5.Ke4 Sa2 6.Lb2 Sb4 7.Lc3 Sa6 8.a5 Kd6
9.Lb2 Kc6 10.Le5 Sb4 11.Kf5 Kd7
12.Lc3 Sa6 13.Ke5 Kc6 14.Ld2 (2.392.566.723) 3217
TB:10.351.870

83/97 12:37 +5.98 1.Le5 Sa6 2.Kc2 Kb6 3.Kd3 Kc6 4.Lf6 Sb4+
5.Ke4 Sa2 6.Lb2 Sb4 7.Lc3 Sa6 8.a5 Kd6
9.Lb2 Kc6 10.Le5 Sb4 11.Kf5 Kd7
12.Lc3 Sa6 13.Ke5 Sc7 14.Lb2 (2.460.236.259) 3246
TB:10.690.434

84/97 13:48 +6.04++ 1.Le5 Sa6 2.Kc2 Kb6 3.Kd3 Kc6 4.Lf6 Sb4+
5.Ke4 Sa2 6.Lb2 Sb4 7.Lc3 Sa6 8.a5 Kd6
9.Lf6 Sb4 10.Kf5 Sa2 11.Le5+ Kc6
12.Lf4 Kb7 13.Le3 Kc6 14.a6 (2.775.008.087) 3350
TB:12.111.164

84/97 14:09 +6.10++ 1.Le5 Sd7 2.Lg3 Kb6 3.Lf4 Kc6 4.Kc2 Sf6
5.Le3 Sd7 6.Kd3 Sb8 7.Lf4 Sa6 8.Ld2 Kd6
9.Ke4 Ke6 10.Lf4 Sb4 11.a5 Sa6
12.Lg3 Sb4 13.Lf2 Sa6 14.Lg1 (2.855.521.551) 3361
TB:12.236.833

84/97 14:17 +6.19++ 1.Le5 Sd7 2.Lg3 Kb7 3.Ld6 Kb6 4.Lf4 Kc6
5.Kc2 Sb6 6.Kd3 Sa8 7.Ld2 Sc7 8.Ke4 Se6
9.a5 Kd6 10.a6 Kc6 11.Lf4 Sd4 12.b4 Se6
13.b5+ Kb6 14.Ld6 (2.891.949.418) 3372
TB:12.278.624

84/97 14:30 +6.33++ 1.Le5 Sd7 2.Lg3 Sf6 3.Lf4 Sg8 4.Le5 Se7
5.Lf6 Sc8 6.Kc2 Kd7 7.Lc3 Sb6 8.Le5 Ke6
9.Lg3 Sc8 10.Lf2 Kd6 11.Kd3 Se7
12.a5 Sc6 13.Le1 Sa7 14.Lg3+ (2.954.712.888) 3393
TB:12.470.927

84/97 15:22 +6.54++ 1.Le5 Sa6 2.Kc2 Kd7 3.Kd3 Sb4+ 4.Ke3 Kc6
5.a5 Sa2 6.Kd2 Sb4 7.Lc3 Sa6 8.Kd3 Kd6
9.Ke4 Ke6 10.Le5 Sb4 11.Lf4 Sa6
12.Lg3 Sb4 13.Le5 Sa6 14.Lf4 (3.257.290.389) 3529
TB:13.123.529

84/97 15:52 +6.86++ 1.Le5 Sa6 2.Kc2 Kd7 3.a5 Ke6 4.Lf4 Kf5
5.Ld6 Kf6 6.Lxc5 Sxc5 7.b4 Sa6 8.b5 Sc7
9.a6 Sa8 10.Kc3 Sb6 11.Kd4 Ke7 12.c5 Sc8
13.b6 Kd8 14.a7 (3.397.820.655) 3568
TB:13.776.350
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