Stockfish sewing machine

Discussion of anything and everything relating to chess playing software and machines.

Moderators: hgm, Rebel, chrisw

Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Stockfish sewing machine

Post by Vinvin »

zullil wrote: ↑Wed Jul 08, 2020 12:23 pm What endgame tables are being used? I see 511 for Vinvin, which suggests one 7-man table is being used?
yes, all 6-man + KRppKRp
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Stockfish sewing machine

Post by zullil »

Dann Corbit wrote: ↑Wed Jul 08, 2020 11:13 am Here is a sample, (this one is single threaded):

Code: Select all

Searching: 1nk5/3p4/p1pPp3/P1P1Pp2/5p2/5P1K/2P2P2/8 w - - 0 1
infinite: 0 time: 0 increment: 0 moves to go: 0

 1 +154.14   00:00      11  Kh4 
 2 +154.14   00:00      20  Kh4 Kd8 
 3 +154.14   00:00      35  Kh4 Kd8 Kh5 
 4 +154.14   00:00      53  Kh4 Kd8 Kh5 Ke8 
 5 +154.14   00:00      78  Kh4 Kd8 Kh5 Ke8 Kg6 
 6 +154.14   00:00     106  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 
 7 +154.14   00:00     142  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 
 8 +154.14   00:00     181  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 
 9 +154.14   00:00     226  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 
10 +154.14   00:00     275  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 
11 +154.14   00:00     335  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 
12 +154.14   00:00     398  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 
13 +154.14   00:00     471  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 
14 +154.14   00:00     546  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 
15 +154.14   00:00     629  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 
16 +154.14   00:00     716  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 
17 +154.14   00:00     811  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 
18 +154.14   00:00    1709  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 
19     #59   00:00    3375  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 
20     #59   00:00    4148  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 
21     #59   00:00    5033  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 
22     #59   00:00    5881  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 
23     #59   00:00    6723  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 
24     #59   00:00    7596  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 
25     #59   00:00    8415  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 
26     #59   00:00    9270  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 
27     #62   00:00   10140  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 
28     #62   00:00   11040  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 
29     #62   00:00   11939  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 
30     #62   00:00   12913  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 f4 
31     #62   00:00   13827  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 
32     #62   00:00   15629  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 
33 +154.14   00:00   17162  Kh4 Kd8 Kh5 Ke8 Kg6 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg8 c4 Kg7 Kd8 
34 +153.72   00:00   25855  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg8 
35 +153.72   00:00   29455  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg8 Kd8 
36 +153.72   00:00   33319  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg8 Kd8 Kg7 
37 +153.72   00:00   36335  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg8 Kd8 Kg7 Kc7 
38 +153.72   00:00   40735  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg8 Kd8 Kg7 Kc7 Kg6 
39 +153.72   00:00   45826  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg8 Kd8 Kg7 Kc7 Kg6 Kxb8 
40 +153.72   00:00   49731  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kh4 
41 +153.72   00:00   53859  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kh4 Kxb8 
42 +154.14   00:00   55370  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kh4 Kxb8 Kg4 Kc7 
43     #63   00:00   57561  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kh4 Kxb8 Kg4 Kc7 Kxf4 Kc8 
44     #63   00:00   71990  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 Kd8 Kg6 f4 Kh5 Kc8 Kh4 Kxb8 Kg4 Kc7 Kxf4 Kc8 Kxe5 
45 +153.72   00:00   89993  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kh4 Kxb8 Kg4 Kc7 Kxf4 c4 Kxe5 Kxd7 Ke4 
46 +153.72   00:00   97597  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kh4 Kxb8 Kg4 Kc7 Kxf4 c4 Kxe5 Kxd7 Ke4 Kxc6 
47 +153.72   00:00  107781  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kh4 Kxb8 Kg4 Kc7 Kxf4 c4 Kxe5 Kxd7 Ke4 Kxc6 Kd3 
48 +153.72   00:00  118678  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kh4 Kxb8 Kg4 Kc7 Kxf4 Kxd7 Kxe5 Kxc6 Ke4 c4 Kd3 d7 
49 +153.72   00:00  125955  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kh4 Kxb8 Kg4 Kc7 Kxf4 Kxd7 Kxe5 Kxc6 Kf6 c4 Ke5 d7 Ke4 
50 +153.72   00:00  138425  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kh4 Kxb8 Kg4 Kc7 Kxf4 Kxd7 Kxe5 Kxc6 Kf6 c4 Ke5 d7 Ke4 d8=Q 
51 +153.76   00:00  147785  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kh4 Kxb8 Kg4 Kc7 Kxf4 Kxd7 Kxe5 Kxc6 Kf6 c4 Kg6 d7 e5 Kd6 e4 d8=Q 
52 +153.76   00:00  157428  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kh4 Kxb8 Kg4 Kc7 Kxf4 Kxd7 Kxe5 Kxc6 Kf6 c4 Kg6 d7 e5 Kd6 e4 d8=Q 
53 +153.81   00:00  161978  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kh4 Kxb8 Kg4 Kc7 Kxf4 Kxd7 Kxe5 Kxc6 Kf6 c4 Kg6 d7 e5 Kd6 Kg5 d8=Q+ Kg4 Qf6 
54 +153.78   00:00  173570  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kh4 Kxb8 Kg4 Kc7 Kxf4 Kxd7 Kxe5 Kxc6 Kf6 c4 Kg6 d7 e5 Kd6 Kh6 d8=Q 
55     #69   00:00  187278  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kh4 Kxb8 Kg4 Kc7 Kxf4 Kxd7 Ke4 Kxc6 Kf4 d7 Ke4 f4 Kxf4 d8=Q Kg3 Qg8+ Kf2 Qxe6 
56     #64   00:00  210162  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kh4 Kxb8 Kg4 Kc7 Kxf4 Kxd7 Ke4 Kxc6 Kf4 d7 Ke4 d8=Q Kf3 Qe8 Kg4 Qg8+ Kf3 Qd8 Kxf2 Qe7 Kf1 
57     #68   00:00  341207  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kg4 Kxb8 Kxf4 Kc8 Kxe5 Kxd7 Kd5 Kc7 Kxc5 d7 Kc4 Kxc6 Kb3 d8=Q Kxc3 Qf6+ Kc2 Qxe6 Kd1 Qxf5 Ke2 Qe4+ Kxf2 
58     #63   00:00  399607  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kg4 Kxb8 Kxf4 Kc8 Kxe5 Kxd7 Kd5 Kc7 Kxc5 d7 Kc4 Kxc6 Kb3 d8=Q Kc2 Qe8 Kd2 Qxe6 f4 Qe4 Kxc3 Qf3+ Kd2 
59     #64   00:00  460313  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kg4 Kxb8 Kxf4 Kc8 Kxe5 Kxd7 Kd5 Kc7 Kxc5 d7 Kc4 Kxc6 Kb3 d8=Q Kb2 Qd2+ Kb3 Qe3 Ka3 Qxe6 f4 Qe4 Kb3 Qd5+ Ka3 
60     #64   00:00  520329  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Kg8 Ke7 Kh7 f4 Kg6 Kd8 Kh5 Kc8 Kg4 Kxb8 Kxf4 Kc8 Kxe5 Kxd7 Kd5 Kc7 Kxc5 d7 Kc4 Kxc6 Kb3 d8=Q Kb2 Qd2+ Kb3 Qe3 Ka3 Qxe6 f4 Qe4 Kb3 c4 Kb4 
61     #57   00:02   7641K  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 f4 Kg5 Kg7 Kxf4 Kh6 Kg4 Kg6 f4 Kh6 f5 Kg7 Kh5 Kf7 Kg5 Kg7 c4 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 f3 exf5 Kxf5 Kg7 e6 dxe6+ Kxe6 Kg6 f4 Nd7 Kxd7 Kf5 Kxc6 Ke4 f5 Ke3 
62     #57   00:04  12911K  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 f4 Kg5 Kg7 Kxf4 Kh6 Kg4 Kg6 f4 Kh6 f5 Kg7 Kh5 Kf7 Kg5 Kg7 c4 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 f3 exf5 Kxf5 Kg7 e6 dxe6+ Kxe6 Kg6 f4 Nd7 Kxd7 Kf5 Kxc6 Ke4 d7 Kd3 f5 Ke2 
63     #53   00:18  67484K  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 f4 c3 Kg8 Kg6 Kh8 Kf6 Kh7 c4 Kh6 Ke7 Kg5 Kd8 Kf5 Kc7 Kxe5 Kxb8 Kd4 Kc8 Kxc5 Kxd7 e5 Kc7 Kxc4 Kxc6 Kd3 d7 Ke2 Kd5 Kf1 d8=Q e4 Kxe4 Kg2 Qf6 Kh2 Kxf4 Kg2 Qxa6 Kh1 Kf5 Kh2 
64     #53   00:29 111116K  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 f4 c3 Kg8 Kg6 Kh8 Kf6 Kh7 c4 Kh6 Ke7 Kg5 Kd8 Kf5 Kc7 Kxe5 Kxb8 Kd4 Kc8 Kxc5 Kxd7 e5 Kc7 Kxc4 Kxc6 Kd3 d7 Ke2 Kd5 Kf1 d8=Q e4 Kxe4 Kg2 Qf6 Kh2 Kxf4 Kg2 Qxa6 Kh1 Kf5 Kh2 Qc4 
65     #53   00:40 155589K  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 f4 c3 Kg8 Kg6 Kh8 Kf6 Kh7 c4 Kh6 Ke7 Kg5 Kd8 Kf5 Kc7 Kxe5 Kxb8 Kd4 Kc8 Kxc5 Kxd7 e5 Kc7 Kxc4 Kxc6 Kd3 d7 Ke2 Kd5 Kf1 d8=Q e4 Kxe4 Kg2 Qf6 Kh2 Kxf4 Kg2 Qxa6 Kh1 Kf5 Kh2 Qc4 Kh3 
66     #55   00:44 170040K  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 f4 c3 Kg8 Kg6 Kh8 Kf6 Kh7 c4 Kh6 Ke7 Kg5 Kd8 Kf5 Kc7 Kxe5 Kxb8 Kd4 Kc8 Kxc5 Kxd7 e5 Kc7 Kxc4 Kxc6 Kd3 d7 Ke2 Kd5 Kf1 d8=Q e4 Kxe4 Kg2 Qf6 Kh2 Kxf4 Kg2 Qxa6 Kh1 Kf5 Kh2 Qc4 Kh3 Qc5 
67     #53   00:53 205936K  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Ke8 Kg7 Kd8 Kf8 Kc8 Ke7 Kb7 Kd8 Ka8 Kc7 Ka7 c4 Ka8 Kb6 f4 Kc7 Ka7 Kd8 Kb7 Ke8 Ka8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 f4 
68     #53   01:06 254669K  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Ke8 Kg7 Kd8 Kf8 Kc8 Ke7 Kb7 Kd8 Ka8 Kc7 Ka7 c4 Ka8 Kb6 f4 Kc7 Ka7 Kd8 Kb7 Ke8 Ka8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 f4 Ke8 
69     #53   01:17 298031K  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Ke8 Kg7 Kd8 Kf8 Kc8 Ke7 Kb7 Kd8 Ka8 Kc7 Ka7 c4 Ka8 Kb6 f4 Kc7 Ka7 Kd8 Kb7 Ke8 Ka8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 f4 Ke8 Kg7 
70     #53   01:28 340777K  Kh4 Kd8 Kh5 Ke8 Kg6 Kf8 Kf6 Ke8 Kg7 Kd8 Kf7 Kc8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 c3 Ke8 Kg7 Kd8 Kf8 Kc8 Ke7 Kb7 Kd8 Ka8 Kc7 Ka7 c4 Ka8 Kb6 f4 Kc7 Ka7 Kd8 Kb7 Ke8 Ka8 Ke7 Kb7 Kf6 Kc8 Kg5 Kd8 Kxf4 Ke8 Kg5 Kf7 Kh6 Kf8 Kg6 Kg8 Kf6 Kf8 f4 Ke8 Kg7 Kd8 
Nodes: 340777276
Nodes/second: 3830895
Best move: Kh4
Can you reproduce the following? This is a freshly-compiled Stockfish-dev (bench 4882833):

Code: Select all

$ ./stockfish 
Stockfish 080720 64 BMI2 by T. Romstad, M. Costalba, J. Kiiski, G. Linscott
position fen 1nk5/3p4/p1pPp3/P1P1Pp2/5p2/5P1K/2P2P2/8 w - - 0 1
d

 +---+---+---+---+---+---+---+---+
 |   | n | k |   |   |   |   |   | 8
 +---+---+---+---+---+---+---+---+
 |   |   |   | p |   |   |   |   | 7
 +---+---+---+---+---+---+---+---+
 | p |   | p | P | p |   |   |   | 6
 +---+---+---+---+---+---+---+---+
 | P |   | P |   | P | p |   |   | 5
 +---+---+---+---+---+---+---+---+
 |   |   |   |   |   | p |   |   | 4
 +---+---+---+---+---+---+---+---+
 |   |   |   |   |   | P |   | K | 3
 +---+---+---+---+---+---+---+---+
 |   |   | P |   |   | P |   |   | 2
 +---+---+---+---+---+---+---+---+
 |   |   |   |   |   |   |   |   | 1
 +---+---+---+---+---+---+---+---+
   a   b   c   d   e   f   g   h

Fen: 1nk5/3p4/p1pPp3/P1P1Pp2/5p2/5P1K/2P2P2/8 w - - 0 1
Key: 61491D2328B013AD
Checkers: 
go infinite
info depth 1 seldepth 1 multipv 1 score cp -197 nodes 5 nps 5000 tbhits 0 time 1 pv h3g2
info depth 2 seldepth 2 multipv 1 score cp -207 nodes 12 nps 12000 tbhits 0 time 1 pv h3g2 c8b7
info depth 3 seldepth 3 multipv 1 score cp -178 nodes 51 nps 51000 tbhits 0 time 1 pv h3h4 c8b7 h4g5
info depth 4 seldepth 4 multipv 1 score cp -150 nodes 66 nps 66000 tbhits 0 time 1 pv h3h4 c8b7 h4g5
info depth 5 seldepth 5 multipv 1 score cp -75 nodes 89 nps 89000 tbhits 0 time 1 pv h3h4 c8b7 h4g5
info depth 6 seldepth 6 multipv 1 score cp -94 nodes 143 nps 143000 tbhits 0 time 1 pv h3h4 c8b7 h4g5 b7a8 g5f4 a8b7
info depth 7 seldepth 7 multipv 1 score cp -104 nodes 247 nps 247000 tbhits 0 time 1 pv h3h4 c8b7 h4g5 b7a8 g5f4 a8b7 f4e3
info depth 8 seldepth 8 multipv 1 score cp -89 nodes 400 nps 400000 tbhits 0 time 1 pv h3h4 c8b7 h4g5 b7a8 g5f4 a8b7 f4e3
info depth 9 seldepth 12 multipv 1 score cp -77 nodes 703 nps 351500 tbhits 0 time 2 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4e3 f7g6 f3f4
info depth 10 seldepth 13 multipv 1 score cp -55 nodes 1288 nps 644000 tbhits 0 time 2 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7f8 g5h6
info depth 11 seldepth 13 multipv 1 score cp -9 nodes 1812 nps 906000 tbhits 0 time 2 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7f8 g5h6
info depth 12 seldepth 13 multipv 1 score cp 0 nodes 2415 nps 1207500 tbhits 0 time 2 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7f8 g5h6 f8g8 f3f4 g8f7 h6g5
info depth 13 seldepth 17 multipv 1 score cp 0 nodes 3101 nps 1550500 tbhits 0 time 2 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7f8 g5h6 f8g8 h6g5 g8f7 g5h6
info depth 14 seldepth 21 multipv 1 score cp 0 nodes 4161 nps 1387000 tbhits 0 time 3 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7f8 g5h6 f8g8 h6g5 g8f8
info depth 15 seldepth 12 multipv 1 score cp 0 nodes 4876 nps 1625333 tbhits 0 time 3 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5
info depth 16 seldepth 12 multipv 1 score cp 0 nodes 5369 nps 1789666 tbhits 0 time 3 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5
info depth 17 seldepth 13 multipv 1 score cp 0 nodes 5861 nps 1953666 tbhits 0 time 3 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5 h7g7
info depth 18 seldepth 12 multipv 1 score cp 0 nodes 6813 nps 1703250 tbhits 0 time 4 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5
info depth 19 seldepth 12 multipv 1 score cp 0 nodes 7764 nps 1941000 tbhits 0 time 4 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5
info depth 20 seldepth 12 multipv 1 score cp 0 nodes 8752 nps 2188000 tbhits 0 time 4 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5
info depth 21 seldepth 12 multipv 1 score cp 0 nodes 9801 nps 1960200 tbhits 0 time 5 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5
info depth 22 seldepth 12 multipv 1 score cp 0 nodes 10783 nps 2156600 tbhits 0 time 5 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5
info depth 23 seldepth 12 multipv 1 score cp 0 nodes 11841 nps 2368200 tbhits 0 time 5 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5
info depth 24 seldepth 15 multipv 1 score cp 0 nodes 13694 nps 2282333 tbhits 0 time 6 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5
info depth 25 seldepth 12 multipv 1 score cp 0 nodes 16338 nps 2334000 tbhits 0 time 7 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5
info depth 26 seldepth 12 multipv 1 score cp 0 nodes 18875 nps 2696428 tbhits 0 time 7 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5
info depth 27 seldepth 12 multipv 1 score cp 0 nodes 22444 nps 2805500 tbhits 0 time 8 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5
info depth 28 seldepth 12 multipv 1 score cp 0 nodes 24950 nps 2772222 tbhits 0 time 9 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5
info depth 29 seldepth 12 multipv 1 score cp 0 nodes 28443 nps 2844300 tbhits 0 time 10 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5
info depth 30 seldepth 14 multipv 1 score cp 0 nodes 37699 nps 2899923 tbhits 0 time 13 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5
info depth 31 seldepth 12 multipv 1 score cp 0 nodes 42389 nps 3027785 tbhits 0 time 14 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5
info depth 32 seldepth 12 multipv 1 score cp 0 nodes 47569 nps 2973062 tbhits 0 time 16 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5
info depth 33 seldepth 12 multipv 1 score cp 0 nodes 55252 nps 3069555 tbhits 0 time 18 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5
info depth 34 seldepth 12 multipv 1 score cp 0 nodes 61691 nps 3084550 tbhits 0 time 20 pv h3h4 c8d8 h4g5 d8e8 g5f4 e8f7 f4g5 f7g7 g5h5 g7h7 h5g5
info depth 35 seldepth 33 multipv 1 score cp 0 nodes 87828 nps 3252888 tbhits 0 time 27 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7f7 d8c8 f7f6 c8b7 f6g5 b7a8 g5f4 a8b7 f4g5 b7c8 g5h6 c8b7
info depth 36 seldepth 14 multipv 1 score cp 0 nodes 90464 nps 3230857 tbhits 0 time 28 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8
info depth 37 seldepth 14 multipv 1 score cp 0 nodes 92298 nps 3296357 tbhits 0 time 28 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8
info depth 38 seldepth 14 multipv 1 score cp 0 nodes 94615 nps 3262586 tbhits 0 time 29 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8
info depth 39 seldepth 25 multipv 1 score cp 0 nodes 99255 nps 3308500 tbhits 0 time 30 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8
info depth 40 seldepth 25 multipv 1 score cp 0 nodes 103780 nps 3347741 tbhits 0 time 31 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7f7 d8c8 f7f6 c8b7 f6g5 b7a8 g5f4 a8b7 f4g5 b7c8 g5h6 c8b7
info depth 41 seldepth 34 multipv 1 score cp 0 nodes 113336 nps 3333411 tbhits 0 time 34 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7f7 d8c8 f7f6 c8b7 f6g5 b7a8 g5f4 a8b7 f4g5 b7c8 g5h6 c8b7 h6g7 b7c8 g7f8 c8d8 f8f7 d8c8 f7g7 c8b7 g7h6 b7c8 h6g7
info depth 42 seldepth 33 multipv 1 score cp 0 nodes 123982 nps 3350864 tbhits 0 time 37 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7f7 d8c8 f7f6 c8b7 f6g5 b7a8 g5f4 a8b7 f4g5 b7c8 g5h6 c8b7 h6g7 b7c8 g7f8 c8d8 f8f7 d8c8 f7g7 c8b7 g7h6 b7c8
info depth 43 seldepth 33 multipv 1 score cp 0 nodes 130871 nps 3443973 tbhits 0 time 38 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7f7 d8c8 f7f6 c8b7 f6g5 b7a8 g5f4 a8b7 f4g5 b7c8 g5h6 c8b7
info depth 44 seldepth 33 multipv 1 score cp 0 nodes 140994 nps 3438878 tbhits 0 time 41 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7f7 d8c8 f7f6 c8b7 f6g5 b7a8 g5f4 a8b7 f4g5 b7c8 g5h6 c8b7
info depth 45 seldepth 14 multipv 1 score cp 0 nodes 148172 nps 3445860 tbhits 0 time 43 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8
info depth 46 seldepth 25 multipv 1 score cp 0 nodes 156194 nps 3470977 tbhits 0 time 45 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g8 d8c8 g8f7 c8b7 f7f6 b7c8 f6g5 c8d8 g5f4 d8e8 f4g5 e8f8 g5g6 f8e8
info depth 47 seldepth 18 multipv 1 score cp 0 nodes 162647 nps 3460574 tbhits 0 time 47 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g8 d8c8 g8f7 c8b7 f7f6 b7c8
info depth 48 seldepth 18 multipv 1 score cp 0 nodes 178304 nps 3496156 tbhits 0 time 51 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g8 d8c8 g8f7 c8b7 f7f6 b7c8
info depth 49 seldepth 12 multipv 1 score cp 0 nodes 208192 nps 3412983 tbhits 0 time 61 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8
info depth 50 seldepth 12 multipv 1 score cp 0 nodes 214765 nps 3408968 tbhits 0 time 63 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8
info depth 51 seldepth 12 multipv 1 score cp 0 nodes 219896 nps 3435875 tbhits 0 time 64 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8
info depth 52 seldepth 35 multipv 1 score cp 0 nodes 261677 nps 3489026 tbhits 0 time 75 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g8 d8c8 g8f7 c8b7 f7f6 b7c8 f6g5 c8d8 g5f4 d8e8 f4g5 e8f8 g5g6 f8e8
info depth 53 seldepth 35 multipv 1 score cp 0 nodes 292193 nps 3478488 tbhits 0 time 84 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g8 d8c8 g8f7 c8b7 f7f6 b7c8
info depth 54 seldepth 35 multipv 1 score cp 0 nodes 311859 nps 3504033 tbhits 0 time 89 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g8 d8c8 g8f7 c8b7 f7f6 b7c8 f6g5 c8d8 g5f4 d8e8 f4g5 e8f8 g5f6 f8e8 f6g6 e8d8 g6g5 d8c8 g5h6 c8b7 h6g7 b7c8
info depth 55 seldepth 12 multipv 1 score cp 0 nodes 315078 nps 3500866 tbhits 0 time 90 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8
info depth 56 seldepth 12 multipv 1 score cp 0 nodes 342956 nps 3464202 tbhits 0 time 99 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8
info depth 57 seldepth 12 multipv 1 score cp 0 nodes 377912 nps 3467082 tbhits 0 time 109 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8
info depth 58 seldepth 35 multipv 1 score cp 0 nodes 411633 nps 3488415 tbhits 0 time 118 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8
info depth 59 seldepth 13 multipv 1 score cp 0 nodes 420323 nps 3473743 tbhits 0 time 121 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8
info depth 60 seldepth 11 multipv 1 score cp 0 nodes 521505 nps 3342980 tbhits 0 time 156 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8
info depth 61 seldepth 13 multipv 1 score cp 0 nodes 734003 nps 3177502 tbhits 0 time 231 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g6 d8e8
info depth 62 seldepth 13 multipv 1 score cp 0 nodes 830727 nps 3146693 tbhits 0 time 264 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g6 d8e8
info depth 63 seldepth 12 multipv 1 score cp 0 nodes 850332 nps 3172880 tbhits 0 time 268 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8
info depth 64 seldepth 12 multipv 1 score cp 0 nodes 889519 nps 3211259 tbhits 0 time 277 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8
info depth 65 seldepth 13 multipv 1 score cp 0 nodes 1054458 nps 3214810 tbhits 0 time 328 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g6 d8e8
info depth 66 seldepth 13 multipv 1 score cp 0 nodes 1086886 nps 3244435 tbhits 0 time 335 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g6 d8e8
info depth 67 seldepth 14 multipv 1 score cp 0 nodes 1201976 nps 3266239 tbhits 0 time 368 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g6 d8e8 g6g7
info depth 68 seldepth 22 multipv 1 score cp 0 nodes 1738723 nps 3324518 tbhits 0 time 523 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g6 d8e8 c2c4 e8f8 g6f6 f8e8 f6g5 e8f7 g5h6 f7e8 h6g6
info depth 69 seldepth 12 multipv 1 score cp 0 nodes 2955723 nps 3114565 tbhits 0 time 949 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8
info depth 70 seldepth 18 multipv 1 score cp 0 nodes 3441720 nps 3092291 hashfull 700 tbhits 0 time 1113 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g6 d8e8 c2c4 e8f8 g6f6 f8e8
info depth 71 seldepth 12 multipv 1 score cp 0 nodes 3505535 nps 3107743 hashfull 703 tbhits 0 time 1128 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8
info depth 72 seldepth 14 multipv 1 score cp 0 nodes 4367109 nps 3137290 hashfull 804 tbhits 0 time 1392 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g6 d8e8
info depth 73 seldepth 22 multipv 1 score cp 0 nodes 5674241 nps 3161137 hashfull 891 tbhits 0 time 1795 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g6 d8e8 c2c4 e8f8 g6f6 f8e8 f6g5 e8f7 g5h5 f7g7 h5g5
info depth 74 seldepth 14 multipv 1 score cp 0 nodes 6660936 nps 3152359 hashfull 936 tbhits 0 time 2113 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g6 d8e8
info depth 75 seldepth 18 multipv 1 score cp 0 nodes 6728661 nps 3160479 hashfull 936 tbhits 0 time 2129 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g6 d8e8 c2c4 e8f8 g6f6 f8e8
info depth 76 seldepth 25 multipv 1 score cp 0 nodes 7131083 nps 3187788 hashfull 943 tbhits 0 time 2237 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g6 d8e8 c2c4 e8f8 g6f6 f8e8 f6g5 e8f7 g5h5 f7g7 h5g5
info depth 77 seldepth 14 multipv 1 score cp 0 nodes 8071225 nps 3185171 hashfull 969 tbhits 0 time 2534 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g6 d8e8
info depth 78 seldepth 12 multipv 1 score cp 0 nodes 8118668 nps 3191300 hashfull 969 tbhits 0 time 2544 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8
info depth 79 currmove h3g2 currmovenumber 2
info depth 79 currmove c2c4 currmovenumber 3
info depth 79 currmove c2c3 currmovenumber 4
info depth 79 currmove h3h2 currmovenumber 5
info depth 79 seldepth 22 multipv 1 score cp 0 nodes 11338808 nps 3162847 hashfull 993 tbhits 0 time 3585 pv h3h4 c8d8 h4g5 d8e8 g5g6 e8f8 g6f6 f8e8 f6g7 e8d8 g7g6 d8e8 c2c4 e8f8 g6f6 f8e8 f6g5 e8f7 g5h5 f7g7 h5g5
info depth 80 currmove h3h4 currmovenumber 1
info depth 80 seldepth 54 multipv 1 score cp 9 lowerbound nodes 34148031 nps 3199178 hashfull 1000 tbhits 0 time 10674 pv h3h4
info depth 79 currmove h3h4 currmovenumber 1
info depth 80 seldepth 61 multipv 1 score cp 18 lowerbound nodes 41142417 nps 3225844 hashfull 1000 tbhits 0 time 12754 pv h3h4
info depth 78 currmove h3h4 currmovenumber 1
info depth 80 seldepth 61 multipv 1 score cp 32 lowerbound nodes 47105501 nps 3236156 hashfull 1000 tbhits 0 time 14556 pv h3h4
info depth 77 currmove h3h4 currmovenumber 1
info depth 80 seldepth 61 multipv 1 score cp 51 lowerbound nodes 50308372 nps 3249055 hashfull 1000 tbhits 0 time 15484 pv h3h4
info depth 76 currmove h3h4 currmovenumber 1
info depth 80 seldepth 61 multipv 1 score cp 78 lowerbound nodes 53652848 nps 3271315 hashfull 1000 tbhits 0 time 16401 pv h3h4
info depth 75 currmove h3h4 currmovenumber 1
info depth 80 seldepth 61 multipv 1 score cp 114 lowerbound nodes 57490144 nps 3292677 hashfull 1000 tbhits 0 time 17460 pv h3h4
info depth 74 currmove h3h4 currmovenumber 1
info depth 80 seldepth 91 multipv 1 score cp 160 lowerbound nodes 61297036 nps 3311026 hashfull 1000 tbhits 0 time 18513 pv h3h4
info depth 73 currmove h3h4 currmovenumber 1
info depth 80 seldepth 91 multipv 1 score cp 221 lowerbound nodes 64511001 nps 3327367 hashfull 1000 tbhits 0 time 19388 pv h3h4
info depth 72 currmove h3h4 currmovenumber 1
info depth 80 seldepth 91 multipv 1 score cp 299 lowerbound nodes 67797421 nps 3352490 hashfull 1000 tbhits 0 time 20223 pv h3h4
info depth 71 currmove h3h4 currmovenumber 1
info depth 80 seldepth 94 multipv 1 score cp 399 lowerbound nodes 70591506 nps 3370649 hashfull 1000 tbhits 0 time 20943 pv h3h4
info depth 70 currmove h3h4 currmovenumber 1
info depth 80 seldepth 94 multipv 1 score cp 526 lowerbound nodes 74263279 nps 3393341 hashfull 1000 tbhits 0 time 21885 pv h3h4
info depth 69 currmove h3h4 currmovenumber 1
info depth 80 seldepth 94 multipv 1 score cp 687 lowerbound nodes 79105898 nps 3407533 hashfull 1000 tbhits 0 time 23215 pv h3h4
info depth 68 currmove h3h4 currmovenumber 1
info depth 80 seldepth 95 multipv 1 score cp 891 lowerbound nodes 99516698 nps 3354231 hashfull 1000 tbhits 0 time 29669 pv h3h4
info depth 67 currmove h3h4 currmovenumber 1
info depth 80 seldepth 100 multipv 1 score cp 1149 lowerbound nodes 164119394 nps 3313802 hashfull 1000 tbhits 0 time 49526 pv h3h4
Top
Dann Corbit
Posts: 12564
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: Stockfish sewing machine

Post by Dann Corbit »

If you are just using the base mate position, I sometimes get similar behavior.
I have had runs where I get a score of zero out past 100 plies.
I have had runs where a mate is found by 50 plies, lost, found, and lost.
And I have had runs where a mate is found and kept.

These are the scores and how often they occurred at the end of an analysis run:

Code: Select all

-150,1
-134,1
-50,3
0,774
1,75
4,1
10,6
12,10
13,1
16,3
27,1
32,8
33,1
38,1
40,21
44,11
53,1
80,1
84,1
88,1
160,1
165,1
227,1
242,1
290,1
304,1
331,1
369,1
386,1
395,1
400,1
403,4
409,1
419,1
426,1
443,1
450,1
457,2
461,1
462,1
475,1
493,3
508,1
511,1
518,1
524,1
535,1
566,2
572,1
595,1
599,1
620,1
622,1
643,1
644,1
656,1
659,1
669,1
674,1
682,2
688,1
691,1
692,1
694,1
699,1
703,1
772,1
778,1
804,1
806,1
829,1
892,1
903,1
905,1
910,1
916,1
946,1
959,1
985,1
1050,1
1088,1
1134,1
1145,1
1149,2
1162,1
1205,1
1270,1
1274,1
1282,1
1416,1
1473,1
1684,1
1836,1
2065,1
2321,1
2396,1
3402,1
3443,1
3454,1
3834,1
3940,1
3976,1
3978,3
4054,1
4212,1
4247,5
4312,3
4387,3
4416,1
4534,2
4616,8
4620,1
4624,1
4655,1
4771,1
4783,1
4985,7
5004,3
5192,1
5574,1
5667,1
6065,1
6081,1
6239,1
6246,19
6257,29
6333,11
6343,1
6382,1
6415,1
6428,8
6441,1
6528,1
7700,1
7719,1
12293,2
15283,1
15341,2
15363,30
15414,18
32616,3
32618,7
32624,1
32630,1
32632,1
32634,12
32636,2
32640,12
32646,1
32650,1
The runs varied in depth from 30 to 119 plies
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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Dann Corbit
Posts: 12564
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: Stockfish sewing machine

Post by Dann Corbit »

As you can see, a score of 0 occurred 774 times. By far the most probable
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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Dann Corbit
Posts: 12564
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: Stockfish sewing machine

Post by Dann Corbit »

It's quite an interesting position and I am not totally sure if it is won or lost (despite having calculated checkmate at least once for every position in the pv given on the yacpdb site).
The black king cannot survive by just shuffling around in his little box.
The white king can move to g5 and then capture the black pawn at f4.
Then the white king can go and cram his way into the king's box, leaving no move for the king.
Then black's only move would be to push the pawn on f5 to f4 (clearly badly zugzwang).
The white king could go back out and capture the pawn on f4 and now he has two pawns on an open file.

So the black king has to come out and fight.
But if the black king comes out to fight and the white king gets behind him, the white king could capture the entombed knight, destroy the back defender of the pawn chain or the black pawn on a6 and win easily.

Maybe this is an unfair position because it is so complicated.
I myself keep vascillating back and forth over whether it is a mate or not.
So maybe the computer and I are peers in that regard.

I think (in the end) Blathy is probably right and it probably is a mate. But I am not totally sure of it.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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Dann Corbit
Posts: 12564
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: Stockfish sewing machine

Post by Dann Corbit »

White also has a free tempo generator with the pawn on c1 (and will soon have a slot on f4 but white wants that gap for black).
Black will only be able to move his king and f pawn and he does not want to move his f pawn.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Stockfish sewing machine

Post by Vinvin »

Dann Corbit wrote: ↑Wed Jul 08, 2020 7:58 pm It's quite an interesting position and I am not totally sure if it is won or lost (despite having calculated checkmate at least once for every position in the pv given on the yacpdb site).
The black king cannot survive by just shuffling around in his little box.
The white king can move to g5 and then capture the black pawn at f4.
Then the white king can go and cram his way into the king's box, leaving no move for the king.
Then black's only move would be to push the pawn on f5 to f4 (clearly badly zugzwang).
The white king could go back out and capture the pawn on f4 and now he has two pawns on an open file.

So the black king has to come out and fight.
But if the black king comes out to fight and the white king gets behind him, the white king could capture the entombed knight, destroy the back defender of the pawn chain or the black pawn on a6 and win easily.

Maybe this is an unfair position because it is so complicated.
I myself keep vascillating back and forth over whether it is a mate or not.
So maybe the computer and I are peers in that regard.

I think (in the end) Blathy is probably right and it probably is a mate. But I am not totally sure of it.
Black-Diamond-XI (without Syzygy) after 1.Kh4 Kd8 2.Kg5
After some learning :

Code: Select all

FEN: 1n1k4/3p4/p1pPp3/P1P1PpK1/5p2/5P2/2P2P2/8 b - - 3 2

Black-Diamond-XI:
...
 53/107	01:47	2 108 915 030	19 593 390	+M45	2. ... Kc8 3.Kxf4 Kb7 4.c3 Kc8 5.Kg5 Kd8 6.Kf6 Ke8 7.Kg7 Kd8 8.Kf8 Kc8 9.Ke7 Kb7 10.Kd8 Ka8 11.Kc8 Ka7 12.Kc7 Ka8 13.Kb6 f4 14.Kc7 Ka7 15.Kd8 Kb7 16.Ke7 Kc8 17.Kf6 Kd8 18.Kg5 Ke8 19.Kxf4 Kf7 20.Kg5 Kg7 21.f4 Kf7 22.c4 Kg7 23.f5 Kf7 24.Kh6 exf5 25.Kg5 f4 26.Kxf4 Ke6 27.f3 Kf7 28.Kf5 Kg7 29.e6 dxe6+ 30.Kxe6 Kg6 31.f4 Nd7 32.Kxd7 Kf6 33.Kxc6 Kf5 34.d7 Ke4 35.d8Q Ke3 36.f5 Kf2 37.f6 Kf3 38.f7 Kg4
 53/94	01:47	2 108 915 030	19 593 390	+99,57	2. ... Ke8 3.Kg6 Kd8 4.Kh6 Ke8 5.Kg7 Kd8 6.Kf8 Kc8 7.Ke7 Kb7 8.Kf6 Ka7 9.Kg6 Kb7 10.Kh6 Ka7 11.Kh5 Kb7 12.Kh4 Ka8 13.Kg5 Ka7 14.Kxf4 Ka8 15.c3 Ka7 16.Kg5 Kb7 17.Kf6 Ka8 18.Ke7 Ka7 19.Kf7 Kb7 20.Ke8 Ka8 21.Kd8 Kb7 22.c4 Ka7 23.Kc7 f4 24.Kc8 Ka8 25.Kd8 Ka7 26.Ke7 Kb7 27.Kf7 Kc8 28.Kg6 Kd8 29.Kg5 Ke8 30.Kxf4 Kf8 31.Kg5 Kg7 32.f4 Kf7 33.Kh6 Kg8 34.Kg6 Kh8 35.Kf6 Kh7 36.f5 exf5 37.Kxf5 Kh6 38.e6 dxe6+ 39.Kxe6 Kg5 40.d7 Nxd7 41.Kxd7 Kf6 42.Kxc6 Ke5 43.f4+ Kd4 44.f5 Ke5 45.Kb7
---------------------------------------------------------------------------
 54/114	09:12	10 599 986 537	19 169 397	+M50	2. ... Kc8 3.Kxf4 Kb7 4.Kg5 Ka8 5.Kf6 Ka7 6.Ke7 Ka8 7.Kd8 Kb7 8.c3 Ka8 9.Kc7 Ka7 10.c4 Ka8 11.Kb6 f4 12.Kc7 Ka7 13.Kd8 Ka8 14.Ke8 Kb7 15.Kf7 Ka7 16.Kg6 Kb7 17.Kg5 Kc8 18.Kxf4 Kd8 19.Kg5 Ke8 20.f4 Kf7 21.Kh6 Kg8 22.Kg6 Kh8 23.f3 Kg8 24.f5 Kh8 25.Kf6 exf5 26.Kxf5 Kg7 27.e6 dxe6+ 28.Kxe6 Kg6 29.f4 Kh5 30.d7 Nxd7 31.Kxd7 Kg4 32.Kxc6 Kf3 33.f5 Ke4 34.f6 Kd3 35.Kb6 Kc3 36.c6 Kb2 37.c7 Ka2
 54/146	09:12	10 599 986 537	19 169 397	+M80	2. ... Ke8 3.Kg6 Kd8 4.Kf7 Kc8 5.Ke7 Kb7 6.Kf6 Ka7 7.Kg5 Ka8 8.c3 Kb7 9.Kxf4 Ka7 10.Kg5 Ka8 11.Kg6 Ka7 12.Kf7 Ka8 13.Kf8 Kb7 14.Ke7 Ka7 15.Kd8 Kb7 16.c4 Ka8 17.Kc8 Ka7 18.Kc7 Ka8 19.Kb6 f4 20.Kc7 Ka7 21.Kd8 Kb7 22.Ke7 Kc8 23.Kf6 Kd8 24.Kf7 Kc8 25.Ke7 Kb7 26.Kf6 Kc8 27.Kg5 Kd8 28.Kg4 Ke8 29.Kxf4 Kf7 30.Kg4 Kf8 31.Kh5 Kg7 32.Kg5 Kf7 33.Kh6 Kf8 34.Kh7 Kf7 35.f4 Kf8 36.Kg6 Kg8 37.f5 Kf8 38.Kf6 exf5 39.Kg5 f4 40.Kxf4 Kg8 41.Kf5 Kg7 42.e6 dxe6+ 43.Kxe6 Kg6 44.d7 Nxd7 45.Kxd7 Kf5 46.Kxc6 Ke5 47.Kb6 Ke4 48.Kb7 Kd3 49.c6
After stop and start the search :

Code: Select all

FEN: 1n1k4/3p4/p1pPp3/P1P1PpK1/5p2/5P2/2P2P2/8 b - - 3 2

Black-Diamond-XI:
...
 55/106	02:23	2 922 681 163	20 381 034	+M48	2. ... Kc8 3.Kxf4 Kd8 4.Kg5 Ke8 5.Kg6 Kf8 6.Kf6 Ke8 7.Kg7 Kd8 8.Kf7 Kc8 9.Ke7 Kb7 10.Kd8 Ka8 11.Kc7 Ka7 12.c3 Ka8 13.Kb6 f4 14.Kc7 Ka7 15.Kd8 Kb7 16.Ke8 Kc8 17.Ke7 Kb7 18.Kf6 Kc8 19.Kg5 Kd8 20.Kxf4 Ke8 21.Kg5 Kf7 22.Kh6 Kg8 23.Kg6 Kf8 24.Kf6 Kg8 25.f4 Kf8 26.f5 exf5 27.Kxf5 Kf7 28.c4 Kf8 29.Kf6 Kg8 30.e6 dxe6 31.Kxe6 Kf8 32.d7 Nxd7 33.Kxd7 Kf7 34.f3 Kf6 35.f4 Kf5 36.Kxc6 Ke6 37.Kb6 Kf5 38.c6 Ke4 39.c7
 55/95	02:23	2 922 681 163	20 381 034	+99,57	2. ... Ke8 3.Kg6 Kd8 4.Kf7 Kc8 5.Ke8 Kb7 6.Kd8 Ka7 7.Ke7 Kb7 8.Kf6 Kc8 9.Kg5 Kd8 10.Kxf4 Ke8 11.Kg5 Kf7 12.Kh6 Kf8 13.Kg6 Kg8 14.c3 Kf8 15.Kf6 Ke8 16.Kg7 Kd8 17.Kf7 Kc8 18.Ke7 Kb7 19.Kd8 Ka8 20.Kc8 Ka7 21.Kc7 f4 22.Kd8 Ka8 23.c4 Kb7 24.Ke8 Kc8 25.Ke7 Kb7 26.Kf6 Kc8 27.Kg5 Kd8 28.Kxf4 Ke8 29.Kg5 Kf7 30.Kh6 Kg8 31.f4 Kf8 32.Kh7 Kf7 33.f3 Kf8 34.Kg6 Kg8 35.Kf6 Kf8 36.f5 exf5 37.Kg5 f4 38.Kxf4 Kg8 39.Kg5 Kf7 40.Kf5 Kg7 41.e6 dxe6+ 42.Kxe6 Kg6 43.f4 Kg7 44.d7 Nxd7 45.Kxd7 Kg6 46.Ke6 Kh5 47.Kf5 Kh4 48.Ke5
---------------------------------------------------------------------------
 56/96	03:23	4 140 903 614	20 319 165	+M45	2. ... Kc8 3.Kxf4 Kd8 4.Kg5 Ke8 5.Kg6 Kf8 6.Kf6 Ke8 7.Kg7 Kd8 8.Kf8 Kc8 9.Ke8 Kb7 10.Kd8 Ka8 11.Kc8 Ka7 12.Kc7 Ka8 13.Kb6 f4 14.Kc7 Ka7 15.Kd8 Kb7 16.Ke7 Kc8 17.Kf6 Kd8 18.Kg5 Ke8 19.Kxf4 Kf7 20.Kg5 Kg7 21.f4 Kf7 22.Kh6 Kg8 23.Kg6 Kf8 24.Kf6 Kg8 25.f5 Kf8 26.f4 exf5 27.Kxf5 Kf7 28.c3 Kg7 29.Kg5 Kg8 30.f5 Kf7 31.Kh6 Kg8 32.e6 dxe6 33.fxe6 Kf8 34.Kg5 Ke8 35.Kf6 Nd7+ 36.exd7+ Kd8 37.Kg7 Kxd7 38.Kf6 Ke8 39.Ke6 Kd8 40.d7
 56/131	03:23	4 140 903 614	20 319 165	+M56	2. ... Ke8 3.Kg6 Kd8 4.Kf7 Kc8 5.Ke8 Kb7 6.Kd8 Ka7 7.Ke7 Kb7 8.Kf6 Kc8 9.Kg5 Kd8 10.Kxf4 Ke8 11.Kg5 Kf7 12.Kh6 Kf8 13.Kg6 Kg8 14.Kf6 Kf8 15.c3 Ke8 16.Kg7 Kd8 17.Kf7 Kc8 18.Ke8 Kb7 19.Kd8 Ka8 20.Kc8 Ka7 21.Kc7 Ka8 22.Kb6 f4 23.Kc7 Ka7 24.Kd8 Kb7 25.Ke8 Ka8 26.Kf7 Kb7 27.Kg6 Kc8 28.Kg5 Kd8 29.Kxf4 Ke8 30.Kg5 Kf7 31.Kh6 Kf8 32.Kh7 Kf7 33.f4 Kf8 34.Kg6 Kg8 35.Kf6 Kf8 36.f5 exf5 37.Kxf5 Kf7 38.f4 Kg7 39.Kg5 Kg8 40.Kg6 Kh8 41.c4 Kg8 42.f5 Kf8 43.Kf6 Kg8 44.e6 Kf8 45.e7+ Ke8 46.Kg5 Kf7 47.Kh6 Ke8 48.f6 Kf7 49.e8Q+ Kxe8 50.Kg7 Kd8 51.f7 Kc8 52.f8Q+ Kb7
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Dann Corbit
Posts: 12564
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: Stockfish sewing machine

Post by Dann Corbit »

Vinvin wrote: ↑Thu Jul 09, 2020 12:59 am
Black-Diamond-XI (without Syzygy) after 1.Kh4 Kd8 2.Kg5
After some learning :

Code: Select all

FEN: 1n1k4/3p4/p1pPp3/P1P1PpK1/5p2/5P2/2P2P2/8 b - - 3 2

Black-Diamond-XI:
...
 53/107	01:47	2 108 915 030	19 593 390	+M45	2. ... Kc8 3.Kxf4 Kb7 4.c3 Kc8 5.Kg5 Kd8 6.Kf6 Ke8 7.Kg7 Kd8 8.Kf8 Kc8 9.Ke7 Kb7 10.Kd8 Ka8 11.Kc8 Ka7 12.Kc7 Ka8 13.Kb6 f4 14.Kc7 Ka7 15.Kd8 Kb7 16.Ke7 Kc8 17.Kf6 Kd8 18.Kg5 Ke8 19.Kxf4 Kf7 20.Kg5 Kg7 21.f4 Kf7 22.c4 Kg7 23.f5 Kf7 24.Kh6 exf5 25.Kg5 f4 26.Kxf4 Ke6 27.f3 Kf7 28.Kf5 Kg7 29.e6 dxe6+ 30.Kxe6 Kg6 31.f4 Nd7 32.Kxd7 Kf6 33.Kxc6 Kf5 34.d7 Ke4 35.d8Q Ke3 36.f5 Kf2 37.f6 Kf3 38.f7 Kg4
 53/94	01:47	2 108 915 030	19 593 390	+99,57	2. ... Ke8 3.Kg6 Kd8 4.Kh6 Ke8 5.Kg7 Kd8 6.Kf8 Kc8 7.Ke7 Kb7 8.Kf6 Ka7 9.Kg6 Kb7 10.Kh6 Ka7 11.Kh5 Kb7 12.Kh4 Ka8 13.Kg5 Ka7 14.Kxf4 Ka8 15.c3 Ka7 16.Kg5 Kb7 17.Kf6 Ka8 18.Ke7 Ka7 19.Kf7 Kb7 20.Ke8 Ka8 21.Kd8 Kb7 22.c4 Ka7 23.Kc7 f4 24.Kc8 Ka8 25.Kd8 Ka7 26.Ke7 Kb7 27.Kf7 Kc8 28.Kg6 Kd8 29.Kg5 Ke8 30.Kxf4 Kf8 31.Kg5 Kg7 32.f4 Kf7 33.Kh6 Kg8 34.Kg6 Kh8 35.Kf6 Kh7 36.f5 exf5 37.Kxf5 Kh6 38.e6 dxe6+ 39.Kxe6 Kg5 40.d7 Nxd7 41.Kxd7 Kf6 42.Kxc6 Ke5 43.f4+ Kd4 44.f5 Ke5 45.Kb7
---------------------------------------------------------------------------
 54/114	09:12	10 599 986 537	19 169 397	+M50	2. ... Kc8 3.Kxf4 Kb7 4.Kg5 Ka8 5.Kf6 Ka7 6.Ke7 Ka8 7.Kd8 Kb7 8.c3 Ka8 9.Kc7 Ka7 10.c4 Ka8 11.Kb6 f4 12.Kc7 Ka7 13.Kd8 Ka8 14.Ke8 Kb7 15.Kf7 Ka7 16.Kg6 Kb7 17.Kg5 Kc8 18.Kxf4 Kd8 19.Kg5 Ke8 20.f4 Kf7 21.Kh6 Kg8 22.Kg6 Kh8 23.f3 Kg8 24.f5 Kh8 25.Kf6 exf5 26.Kxf5 Kg7 27.e6 dxe6+ 28.Kxe6 Kg6 29.f4 Kh5 30.d7 Nxd7 31.Kxd7 Kg4 32.Kxc6 Kf3 33.f5 Ke4 34.f6 Kd3 35.Kb6 Kc3 36.c6 Kb2 37.c7 Ka2
 54/146	09:12	10 599 986 537	19 169 397	+M80	2. ... Ke8 3.Kg6 Kd8 4.Kf7 Kc8 5.Ke7 Kb7 6.Kf6 Ka7 7.Kg5 Ka8 8.c3 Kb7 9.Kxf4 Ka7 10.Kg5 Ka8 11.Kg6 Ka7 12.Kf7 Ka8 13.Kf8 Kb7 14.Ke7 Ka7 15.Kd8 Kb7 16.c4 Ka8 17.Kc8 Ka7 18.Kc7 Ka8 19.Kb6 f4 20.Kc7 Ka7 21.Kd8 Kb7 22.Ke7 Kc8 23.Kf6 Kd8 24.Kf7 Kc8 25.Ke7 Kb7 26.Kf6 Kc8 27.Kg5 Kd8 28.Kg4 Ke8 29.Kxf4 Kf7 30.Kg4 Kf8 31.Kh5 Kg7 32.Kg5 Kf7 33.Kh6 Kf8 34.Kh7 Kf7 35.f4 Kf8 36.Kg6 Kg8 37.f5 Kf8 38.Kf6 exf5 39.Kg5 f4 40.Kxf4 Kg8 41.Kf5 Kg7 42.e6 dxe6+ 43.Kxe6 Kg6 44.d7 Nxd7 45.Kxd7 Kf5 46.Kxc6 Ke5 47.Kb6 Ke4 48.Kb7 Kd3 49.c6
Even here we see something very peculiar. Ply 53, mate in 45 then ply 54 mate in 50 (five deeper than before).

It seems that every SF based engine that analyzes this position does strange and squirrely things. It makes it hard for me to trust the output.
I suspect that there might be zugzwangs on both sides that are somehow overlooked.

At any rate, I do think it is probably checkmate. But I feel uneasy about all of the solutions.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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User avatar
Ovyron
Posts: 4556
Joined: Tue Jul 03, 2007 4:30 am

Re: Stockfish sewing machine

Post by Ovyron »

Dann Corbit wrote: ↑Thu Jul 09, 2020 2:16 am It seems that every SF based engine that analyzes this position does strange and squirrely things. It makes it hard for me to trust the output.
When did this start happening? Do you get this behavior with, say, Stockfish 10? If not perhaps the offending code can be found.
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Dann Corbit
Posts: 12564
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: Stockfish sewing machine

Post by Dann Corbit »

Ovyron wrote: ↑Thu Jul 09, 2020 3:37 am
Dann Corbit wrote: ↑Thu Jul 09, 2020 2:16 am It seems that every SF based engine that analyzes this position does strange and squirrely things. It makes it hard for me to trust the output.
When did this start happening? Do you get this behavior with, say, Stockfish 10? If not perhaps the offending code can be found.
I don't know when it started happening. And stockfish is patched so often, I think it might be difficult to track down.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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