I just read in the French mathematics magazine Tangente (special issue N°14 about Game Theory) a new position submitted to them by Pierre Nolot that is still unsolvable by computers (whereas his original 11 "unsolvable" positions are now solved by all stronger chess engines):
[d]3k4/2pq3p/pp5R/4P3/P6P/2PN4/1PN3K1/8 w - - 0 1
Best move is Nd4 with the goal to immobilize the black queen.
There's a long analysis with many sub variants given. Here's the main line:
1. Nd4, Qg7+; 2. Kh3, Qxh6; 3. Nf4, Kc8; 4. Nde6, Kb7; 5. h5, c5; 6. Kg4, c4; 7. Kf5, Kc6; 8 Ke4, b5; 9. axb5+, axb5; 10. Kd4, Kb6; 11. Kd5, Ka5; 12. Kc5, Ka6; 13. Kc6, Ka5; 14. Kb7, b4; 15. Kc6, bxc3; 16. bxc3, Ka4; 17. Kc5, Kb3; 18. Kd4, Kc2; 19. Kxc4, 1-0
This position was created by Mihai Neghana and Peter Martan.
New unsolvable Nolot position
Moderators: hgm, Rebel, chrisw
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JuLieN
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New unsolvable Nolot position
"The only good bug is a dead bug." (Don Dailey)
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h1a8
- Posts: 511
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Re: New unsolvable Nolot position
This is the ultimate position. IMO Chess engines will be undrawable by humans if they can solve positions like this. By solve I mean, know all the correct moves of all the variations (not just the first move with score). I have a i7 2630 and both houdini and rybka need a lot of help going through the position and variations. I didn't have them think too long though for each position (maybe 3 minutes tops?)
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lech
- Posts: 1136
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Re: New unsolvable Nolot position
It is very hard to solve, becouse you have to go across zero like a river with swamps. In this position it seems to be impossible to make a long jump and the river can take you for many depths.
Additionally after 1.Kf3 Qxd3+ 2.Ne3 Qb1 3. e6 White holds on.
As a rule, endgames which need to go across zero are very hard to solve for engines.
Additionally after 1.Kf3 Qxd3+ 2.Ne3 Qb1 3. e6 White holds on.
As a rule, endgames which need to go across zero are very hard to solve for engines.
Maybe, I can't be friendly, but let me be useful.
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MikeGL
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Re: New unsolvable Nolot position
Nice puzzle.
The theme of this puzzle looks similar to:
http://talkchess.com/forum/viewtopic.ph ... _view=flat
Give up material in exchange for trapped pieces and mobility of
opponent, then queen side pawn play will decide the game.
Including trapped pieces in eval for endgame phase might solve both
difficult puzzles.
p.s. Of all the engines I checked, it seems Sting-1 comes closest to
solving this, it ranks 1.Nd4 as second best move just below 1.Kf3
The theme of this puzzle looks similar to:
http://talkchess.com/forum/viewtopic.ph ... _view=flat
Give up material in exchange for trapped pieces and mobility of
opponent, then queen side pawn play will decide the game.
Including trapped pieces in eval for endgame phase might solve both
difficult puzzles.
p.s. Of all the engines I checked, it seems Sting-1 comes closest to
solving this, it ranks 1.Nd4 as second best move just below 1.Kf3
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Eelco de Groot
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Re: New unsolvable Nolot position
This just to say the position is not all that new, the first publication I could find with Google seems to be as "Der brillante Schachzug" No. 53 in october 2009, a study composed by Mihai Neghina, with a correction I think from, poster in our forum, Dr. Peter Martan. Walter Eigenmann has posted a list of the first 100 brilliant chessmoves in this forum just some time back so I think this position is published in that list already, and the position alone first appeared here in november 2009. But this more for reference, with Google there are several more references and discussions on chessfora to be found. But okay, Nolot No. 12 it is and in that sense a new Nolot position, it is good to have some more very hard problems in that testset.
Eelco
Eelco
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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Cubeman
- Posts: 644
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Re: New unsolvable Nolot position
I would like to know what Rybka Cluster thinks of position.I remember that 2 years ago it was given a hard test and it weakly solved a lot of positions due to the elimination method.
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Graham Banks
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Re: New unsolvable Nolot position
Engine: Zappa Mexico II 64-bit 4CPU (1024 MB)
by Anthony Cozzie
11/39 0:00 -1.23 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.a5 bxa5 5.bxa5 Qxc3 (2.015.102) 2348
11/39 0:01 -1.23 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.a5 bxa5 5.bxa5 Qxc3 (3.092.010) 2304
12/43 0:02 -1.28 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qa1 6.Rxh7 Qxa4 (4.933.173) 2052
12/43 0:03 -1.28 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qa1 6.Rxh7 Qxa4 (7.262.738) 2238
13/45 0:06 -1.29 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qh8 6.Rh5 Qf6+ 7.Ke4 Qa1 (9.972.788) 1622
13/45 0:07 -1.29 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qh8 6.Rh5 Qf6+ 7.Ke4 Qa1 (14.585.652) 1927
14/46 0:13 -1.29 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qh8 6.Rh5 Qf6+ 7.Ke4 Qa1 (16.690.290) 1267
14/47 0:15 -1.29 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qh8 6.Rh5 Qf6+ 7.Ke4 Qa1 (23.632.952) 1555
15/49 0:18 -1.55 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qe7 6.Ke2 axb5 7.axb5 Qe4 (33.856.802) 1837
15/49 0:28 -0.96 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 b5 6.axb5 cxb5 7.b4 Kf7 8.h5 Ke7 9.Kf5 (52.102.513) 1804
15/49 0:40 -0.96 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 b5 6.axb5 cxb5 7.b4 Kf7 8.h5 Ke7 9.Kf5 (68.663.319) 1715
16/51 0:51 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 (85.803.054) 1657
16/51 1:06 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 (116.276.431) 1744
17/53 1:14 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 Ke8 (145.808.979) 1958
17/53 1:47 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 Ke8 (216.762.061) 2012
18/55 2:17 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 (272.291.725) 1973
18/55 3:22 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 (403.520.589) 1989
19/57 4:28 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 (552.433.786) 2056
19/57 6:05 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 (837.476.912) 2292
20/59 8:06 -0.89 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Kc8 5.Kg4 a5 6.h5 Kd7 7.Kf5 b5 8.axb5 cxb5 9.Ke4 b4 10.cxb4 axb4 11.b3 Kc6 12.Nd8+ Kc7 13.Nde6+ (1.240.231.788) 2551 TB:3
by Anthony Cozzie
11/39 0:00 -1.23 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.a5 bxa5 5.bxa5 Qxc3 (2.015.102) 2348
11/39 0:01 -1.23 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.a5 bxa5 5.bxa5 Qxc3 (3.092.010) 2304
12/43 0:02 -1.28 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qa1 6.Rxh7 Qxa4 (4.933.173) 2052
12/43 0:03 -1.28 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qa1 6.Rxh7 Qxa4 (7.262.738) 2238
13/45 0:06 -1.29 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qh8 6.Rh5 Qf6+ 7.Ke4 Qa1 (9.972.788) 1622
13/45 0:07 -1.29 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qh8 6.Rh5 Qf6+ 7.Ke4 Qa1 (14.585.652) 1927
14/46 0:13 -1.29 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qh8 6.Rh5 Qf6+ 7.Ke4 Qa1 (16.690.290) 1267
14/47 0:15 -1.29 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qh8 6.Rh5 Qf6+ 7.Ke4 Qa1 (23.632.952) 1555
15/49 0:18 -1.55 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qe7 6.Ke2 axb5 7.axb5 Qe4 (33.856.802) 1837
15/49 0:28 -0.96 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 b5 6.axb5 cxb5 7.b4 Kf7 8.h5 Ke7 9.Kf5 (52.102.513) 1804
15/49 0:40 -0.96 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 b5 6.axb5 cxb5 7.b4 Kf7 8.h5 Ke7 9.Kf5 (68.663.319) 1715
16/51 0:51 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 (85.803.054) 1657
16/51 1:06 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 (116.276.431) 1744
17/53 1:14 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 Ke8 (145.808.979) 1958
17/53 1:47 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 Ke8 (216.762.061) 2012
18/55 2:17 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 (272.291.725) 1973
18/55 3:22 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 (403.520.589) 1989
19/57 4:28 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 (552.433.786) 2056
19/57 6:05 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 (837.476.912) 2292
20/59 8:06 -0.89 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Kc8 5.Kg4 a5 6.h5 Kd7 7.Kf5 b5 8.axb5 cxb5 9.Ke4 b4 10.cxb4 axb4 11.b3 Kc6 12.Nd8+ Kc7 13.Nde6+ (1.240.231.788) 2551 TB:3
gbanksnz at gmail.com
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ZirconiumX
- Posts: 1334
- Joined: Sun Jul 17, 2011 11:14 am
Re: New unsolvable Nolot position
Give it 2 or 3 years, and you'll wish you hadn't said that......that is still unsolvable by computers...
EDIT: Or maybe not - see Graham's post.
Matthew:out
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I believe in the almighty printf statement.
I believe in the almighty printf statement.
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lech
- Posts: 1136
- Joined: Sun Feb 14, 2010 10:02 pm
Re: New unsolvable Nolot position
Sorry Graham, but at the moment you have proven that it can be a draw. This is not the right solution. Cross zero!Graham Banks wrote:20/59 8:06 -0.89 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Kc8 5.Kg4 a5 6.h5 Kd7 7.Kf5 b5 8.axb5 cxb5 9.Ke4 b4 10.cxb4 axb4 11.b3 Kc6 12.Nd8+ Kc7 13.Nde6+ (1.240.231.788) 2551 TB:3
Maybe, I can't be friendly, but let me be useful.
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Ajedrecista
- Posts: 1974
- Joined: Wed Jul 13, 2011 9:04 pm
- Location: Madrid, Spain.
Re: New unsolvable Nolot position.
Hello!
Analysis by Zappa Mexico II w32 (using two cores) in an Intel Pentium D930 (3 GHz) with 1 GB of hash and 64 MB for Nalimov TBs (up to 5-man), running under Arena 2.0.1 GUI:
[d]3k4/2pq3p/pp5R/4P3/P6P/2PN4/1PN3K1/8 w - - 0 1
Here is the last position on Julien's post; I let Zappa to analyse it exactly under the same conditions as before, but now enabling mate extensions:
[d]8/7p/4N2q/4P2P/2K2N2/2P5/2k5/8 b - - 0 1
Zappa thinks that this is a mate in fifteen.
That is a great problem! Congratulations to the authors. The pattern of the pair of knights trapping valuable opponent pieces is almost the same to a position I posted a while ago:
½-½ or 0-1?
Thanks to Vincent Lejeune's tip of 'Behting' I have just found it at Chess.com with the priceless help of Google; at first glance it says 1908 instead of 1906, but is corrected in the sixth post, so Vincent was right. CPW could not miss this study.
Regards from Spain.
Ajedrecista.
(Sorry for the long post). I get almost identical results to Graham's, also using Zappa Mexico II. What a great engine... from early 2008!Graham Banks wrote:Engine: Zappa Mexico II 64-bit 4CPU (1024 MB)
by Anthony Cozzie
11/39 0:00 -1.23 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.a5 bxa5 5.bxa5 Qxc3 (2.015.102) 2348
11/39 0:01 -1.23 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.a5 bxa5 5.bxa5 Qxc3 (3.092.010) 2304
12/43 0:02 -1.28 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qa1 6.Rxh7 Qxa4 (4.933.173) 2052
12/43 0:03 -1.28 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qa1 6.Rxh7 Qxa4 (7.262.738) 2238
13/45 0:06 -1.29 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qh8 6.Rh5 Qf6+ 7.Ke4 Qa1 (9.972.788) 1622
13/45 0:07 -1.29 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qh8 6.Rh5 Qf6+ 7.Ke4 Qa1 (14.585.652) 1927
14/46 0:13 -1.29 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qh8 6.Rh5 Qf6+ 7.Ke4 Qa1 (16.690.290) 1267
14/47 0:15 -1.29 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qh8 6.Rh5 Qf6+ 7.Ke4 Qa1 (23.632.952) 1555
15/49 0:18 -1.55 1.Kf3 Qxd3+ 2.Ne3 Qb1 3.b4 Qa1 4.c4 Qxe5 5.b5 Qe7 6.Ke2 axb5 7.axb5 Qe4 (33.856.802) 1837
15/49 0:28 -0.96 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 b5 6.axb5 cxb5 7.b4 Kf7 8.h5 Ke7 9.Kf5 (52.102.513) 1804
15/49 0:40 -0.96 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 b5 6.axb5 cxb5 7.b4 Kf7 8.h5 Ke7 9.Kf5 (68.663.319) 1715
16/51 0:51 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 (85.803.054) 1657
16/51 1:06 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 (116.276.431) 1744
17/53 1:14 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 Ke8 (145.808.979) 1958
17/53 1:47 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 Ke8 (216.762.061) 2012
18/55 2:17 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 (272.291.725) 1973
18/55 3:22 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 (403.520.589) 1989
19/57 4:28 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 (552.433.786) 2056
19/57 6:05 -0.93 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Ke7 5.Kg4 Kd7 6.h5 Ke7 7.Kf5 Ke8 8.Nc7+ Kd7 9.Nce6 (837.476.912) 2292
20/59 8:06 -0.89 1.Nd4 Qg7+ 2.Kh3 Qxh6 3.Nf4 c6 4.Nde6+ Kc8 5.Kg4 a5 6.h5 Kd7 7.Kf5 b5 8.axb5 cxb5 9.Ke4 b4 10.cxb4 axb4 11.b3 Kc6 12.Nd8+ Kc7 13.Nde6+ (1.240.231.788) 2551 TB:3
Analysis by Zappa Mexico II w32 (using two cores) in an Intel Pentium D930 (3 GHz) with 1 GB of hash and 64 MB for Nalimov TBs (up to 5-man), running under Arena 2.0.1 GUI:
[d]3k4/2pq3p/pp5R/4P3/P6P/2PN4/1PN3K1/8 w - - 0 1
Arena showed 11 TB hits when I stopped the analysis after more less 5000 seconds. Zappa seems to get stuck with ~ -0.9 evals... IMHO it would require insane amounts of time and resources to get winning evaluations for white. Here is the log file of Zappa:FEN: 3k4/2pq3p/pp5R/4P3/P6P/2PN4/1PN3K1/8 w - - 0 1
Zappa Mexico II:
7/26 00:04 74.827 251.943 -0,56 Kg2f3 Qd7xd3+ Nc2e3 Qd3b1 b2b4 Qb1d3 Kf3f4 Qd3xc3
7/26 00:04 109.689 270.170 -0,56 Kg2f3 Qd7xd3+ Nc2e3 Qd3b1 b2b4 Qb1d3 Kf3f4 Qd3xc3
8/26 00:04 159.295 282.940 -0,68 Kg2f3 Qd7xd3+ Nc2e3 Qd3b1 Kf3f4 Qb1xb2 Rh6xh7 Qb2xc3
8/29 00:04 255.590 308.684 -0,68 Kg2f3 Qd7xd3+ Nc2e3 Qd3b1 Kf3f4 Qb1xb2 Rh6xh7 Qb2xc3
9/32 00:04 386.135 312.660 -0,73 Kg2f3 Qd7xd3+ Nc2e3 Qd3b1 b2b4 Qb1b3 Rh6xh7 Qb3xc3
9/32 00:05 557.281 321.199 -0,73 Kg2f3 Qd7xd3+ Nc2e3 Qd3b1 b2b4 Qb1b3 Rh6xh7 Qb3xc3
10/38 00:06 855.747 333.885 -1,25 Kg2f3 Qd7xd3+ Nc2e3 Qd3b1 b2b4 Qb1a1 c3c4 Qa1xe5 b4b5 Qe5a1 Rh6xh7 Qa1xa4
10/39 00:08 1.896.046 357.947 -1,25 Kg2f3 Qd7xd3+ Nc2e3 Qd3b1 b2b4 Qb1a1 c3c4 Qa1xe5 b4b5 Qe5a1 Rh6xh7 Qa1xa4
11/39 00:09 2.117.843 358.592 -1,25 Kg2f3 Qd7xd3+ Nc2e3 Qd3b1 b2b4 Qb1a1 c3c4 Qa1xe5 b4b5 Qe5a1 Rh6xh7 Qa1xa4
11/39 00:11 2.755.356 370.443 -1,25 Kg2f3 Qd7xd3+ Nc2e3 Qd3b1 b2b4 Qb1a1 c3c4 Qa1xe5 b4b5 Qe5a1 Rh6xh7 Qa1xa4
12/40 00:15 4.223.101 366.716 -1,29 Kg2f3 Qd7xd3+ Nc2e3 Qd3b1 b2b4 Qb1a1 c3c4 Qa1xe5 b4b5 Qe5g7 Rh6h5 Qg7f6+ Kf3e4 Qf6a1
12/42 00:20 6.565.488 382.337 -1,29 Kg2f3 Qd7xd3+ Nc2e3 Qd3b1 b2b4 Qb1a1 c3c4 Qa1xe5 b4b5 Qe5g7 Rh6h5 Qg7f6+ Kf3e4 Qf6a1
13/45 00:27 9.079.258 377.077 -1,29 Kg2f3 Qd7xd3+ Nc2e3 Qd3b1 b2b4 Qb1a1 c3c4 Qa1xe5 b4b5 Qe5g7 Rh6h5 Qg7f6+ Kf3e4 Qf6a1
13/45 00:35 12.428.221 388.759 -1,29 Kg2f3 Qd7xd3+ Nc2e3 Qd3b1 b2b4 Qb1a1 c3c4 Qa1xe5 b4b5 Qe5g7 Rh6h5 Qg7f6+ Kf3e4 Qf6a1
14/45 00:39 14.114.374 388.355 -1,29 Kg2f3 Qd7xd3+ Nc2e3 Qd3b1 b2b4 Qb1a1 c3c4 Qa1xe5 b4b5 Qe5g7 Rh6h5 Qg7f6+ Kf3e4 Qf6a1
14/47 01:02 23.398.771 400.191 -1,29 Kg2f3 Qd7xd3+ Nc2e3 Qd3b1 b2b4 Qb1a1 c3c4 Qa1xe5 b4b5 Qe5g7 Rh6h5 Qg7f6+ Kf3e4 Qf6a1
15/49 01:25 32.879.012 402.342 -1,46 Kg2f3 Qd7xd3+ Nc2e3 Qd3b1 b2b4 Qb1a1 c3c4 Qa1xe5 b4b5 Qe5e7 Rh6h5 a6a5 Kf3f4 Qe7f6+
15/49 02:02 48.566.396 409.463 -0,97 Nc2d4 Qd7g7+ Kg2h3 Qg7xh6 Nd3f4 Kd8e8 Nd4e6 c7c6 Kh3g4 b6b5 a4xb5 c6xb5 h4h5 a6a5 Kg4f5 b5b4 c3xb4 a5xb4
15/49 02:39 64.194.271 412.411 -0,97 Nc2d4 Qd7g7+ Kg2h3 Qg7xh6 Nd3f4 Kd8e8 Nd4e6 c7c6 Kh3g4 b6b5 a4xb5 c6xb5 h4h5 a6a5 Kg4f5 b5b4 c3xb4 a5xb4
16/51 03:27 85.234.881 419.005 -0,94 Nc2d4 Qd7g7+ Kg2h3 Qg7xh6 Nd3f4 Kd8e8 Nd4e6 c7c6 Kh3g4 b6b5 a4xb5 c6xb5 h4h5 a6a5 Kg4f5 b5b4 c3xb4 a5xb4 Kf5e4
16/51 04:47 119.619.903 421.428 -0,94 Nc2d4 Qd7g7+ Kg2h3 Qg7xh6 Nd3f4 Kd8e8 Nd4e6 c7c6 Kh3g4 b6b5 a4xb5 c6xb5 h4h5 a6a5 Kg4f5 b5b4 c3xb4 a5xb4 Kf5e4
17/53 05:55 151.279.952 429.372 -0,96 Nc2d4 Qd7g7+ Kg2h3 Qg7xh6 Nd3f4 Kd8e8 Nd4e6 c7c6 Kh3g4 b6b5 a4xb5 c6xb5 h4h5 a6a5 Kg4f5 b5b4 c3xb4 a5xb4 Ne6c7+ Ke8d8 Nc7e6+
17/53 08:40 222.875.224 431.015 -0,96 Nc2d4 Qd7g7+ Kg2h3 Qg7xh6 Nd3f4 Kd8e8 Nd4e6 c7c6 Kh3g4 b6b5 a4xb5 c6xb5 h4h5 a6a5 Kg4f5 b5b4 c3xb4 a5xb4 Ne6c7+ Ke8d8 Nc7e6+
18/55 11:59 308.915.079 431.558 -0,88 Nc2d4 Qd7g7+ Kg2h3 Qg7xh6 Nd3f4 Kd8e8 Nd4e6 c7c6 Kh3g4 Ke8f7 h4h5 Kf7e7 Kg4f5 Ke7e8 b2b4 a6a5 b4xa5 b6xa5 c3c4 Ke8d7 Kf5e4
18/55 17:19 443.435.450 428.259 -0,88 Nc2d4 Qd7g7+ Kg2h3 Qg7xh6 Nd3f4 Kd8e8 Nd4e6 c7c6 Kh3g4 Ke8f7 h4h5 Kf7e7 Kg4f5 Ke7e8 b2b4 a6a5 b4xa5 b6xa5 c3c4 Ke8d7 Kf5e4
19/57 23:19 598.307.164 428.606 -0,88 Nc2d4 Qd7g7+ Kg2h3 Qg7xh6 Nd3f4 Kd8e8 Nd4e6 c7c6 Kh3g4 Ke8f7 h4h5 Kf7e7 Kg4f5 Ke7e8 b2b4 Ke8f7 Ne6g5+ Kf7e7 Ng5e6 Ke7e8 a4a5 b6xa5 b4xa5 Ke8d7
19/57 35:21 889.276.341 419.987 -0,88 Nc2d4 Qd7g7+ Kg2h3 Qg7xh6 Nd3f4 Kd8e8 Nd4e6 c7c6 Kh3g4 Ke8f7 h4h5 Kf7e7 Kg4f5 Ke7e8 b2b4 Ke8f7 Ne6g5+ Kf7e7 Ng5e6 Ke7e8 a4a5 b6xa5 b4xa5 Ke8d7
20/59 52:07 1.315.311.286 421.011 -0,86 Nc2d4 Qd7g7+ Kg2h3 Qg7xh6 Nd3f4 Kd8e8 Nd4e6 c7c6 b2b4 Ke8f7 Kh3g4 Kf7e7 h4h5 a6a5 b4xa5 b6xa5 Kg4f5 Ke7d7 Kf5e4 Kd7e8 Ke4f5 Ke8e7
20/59 1:21:29 2.041.403.196 417.777 -0,86 Nc2d4 Qd7g7+ Kg2h3 Qg7xh6 Nd3f4 Kd8e8 Nd4e6 c7c6 b2b4 Ke8f7 Kh3g4 Kf7e7 h4h5 a6a5 b4xa5 b6xa5 Kg4f5 Ke7d7 Kf5e4 Kd7e8 Ke4f5 Ke8e7
Code: Select all
[...]
set_option(): ignore remote memory values = 1
set_option(): memory = 67108864
Auto-adjusting 64.000000MB for 1CPUs
set_option(): print_singular_moves = 1
Auto-adjusting 0.000000MB for 1CPUs
CPU0 starting.
CPU1 starting.
Auto-adjusting 64.000000MB for 2CPUs
set_option(): set idle timer to 700000000 iterations per second
Bad option in file zappa.ini on line 84.
Bad option in file zappa.ini on line 85.
Bad option in file zappa.ini on line 86.
Bad option in file zappa.ini on line 87.
Bad option in file zappa.ini on line 88.
Bad option in file zappa.ini on line 89.
Bad option in file zappa.ini on line 90.
Bad option in file zappa.ini on line 91.
hash_table::resize(): Resized hash table "Transposition Table 0" to 28521267 bytes. (445644 entries of 64 bytes)
hash_table::resize(): Resized hash table "Transposition Table 1" to 28521267 bytes. (445644 entries of 64 bytes)
hash_table::resize(): Resized hash table "King hash 1" to 3355443 bytes. (52428 entries of 64 bytes)
hash_table::resize(): Resized hash table "Pawn hash 1" to 1677721 bytes. (26214 entries of 64 bytes)
hash_table::resize(): Resized hash table "King hash 0" to 3355443 bytes. (52428 entries of 64 bytes)
hash_table::resize(): Resized hash table "Pawn hash 0" to 1677721 bytes. (26214 entries of 64 bytes)
set_option(): tbcache = 67108864
tablebase_init(): searching for Nalimov tablebases at path "C:\[...]"
tablebase_init(): found TBs with up to 5 pieces.
tablebase_init(): TB indices & decompression using 19457kb of memory
hash_table::resize(): Resized hash table "tb cache 0" to 8388608 bytes. (8388608 entries of 1 bytes)
tablebase_init(): allocated 8.00 MB for the tablebase cache.
set_option(): memory = 1073741824
Auto-adjusting 1024.000000MB for 2CPUs
hash_table::resize(): Resized hash table "tb cache 0" to 67108864 bytes. (67108864 entries of 1 bytes)
tablebase_init(): allocated 64.00 MB for the tablebase cache.
Setting Clock: fixed time per move of 10000000000.000s
hash_table::resize(): Resized hash table "Transposition Table 0" to 486539264 bytes. (7602176 entries of 64 bytes)
hash_table::resize(): Resized hash table "Transposition Table 1" to 486539264 bytes. (7602176 entries of 64 bytes)
hash_table::resize(): Resized hash table "King hash 0" to 33554432 bytes. (524288 entries of 64 bytes)
hash_table::resize(): Resized hash table "Pawn hash 0" to 16777216 bytes. (262144 entries of 64 bytes)
hash_table::resize(): Resized hash table "King hash 1" to 33554432 bytes. (524288 entries of 64 bytes)
hash_table::resize(): Resized hash table "Pawn hash 1" to 16777216 bytes. (262144 entries of 64 bytes)
- - - k - - - -
- - p q - - - p
p p - - - - - R
- - - - P - - -
P - - - - - - P
- - P N - - - -
- P N - - - K -
- - - - - - - -
WQC:0 WKC:0 BQC:0 BKC:0 Turn:WHITE EP:0
MB: 200 WPC: 3 BPC: 1 HM:0 HKL:53BD07B7 HKH:2213D367
3k4/2pq3p/pp5R/4P3/P6P/2PN4/1PN3K1/8 w - - 0 1
Book: (0 entries / 0 bytes / 0s)
Book: No move selected.
1. Kg2-f3 Qd7xd3! 2. Nc2-e3! Qd3-b1 3. b2-b4 Qb1-d3 4. Kf3-f4 Qd3xc3
= (-0.56) Depth: 7/26 00:00:00.29 74kN (252 KN/s, 90 splits, 3 aborts)
1. Kg2-f3 Qd7xd3! 2. Nc2-e3! Qd3-b1 3. b2-b4 Qb1-d3 4. Kf3-f4 Qd3xc3
= (-0.56) Depth: 7/26 00:00:00.40 109kN (270 KN/s, 139 splits, 5 aborts)
1. Kg2-f3 Qd7xd3! 2. Nc2-e3! Qd3-b1 3. Kf3-f4 Qb1xb2! 4. Rh6xh7 Qb2xc3
= (-0.68) Depth: 8/26 00:00:00.56 159kN (283 KN/s, 156 splits, 7 aborts)
1. Kg2-f3 Qd7xd3! 2. Nc2-e3! Qd3-b1 3. Kf3-f4 Qb1xb2! 4. Rh6xh7 Qb2xc3
= (-0.68) Depth: 8/29 00:00:00.82 255kN (309 KN/s, 252 splits, 9 aborts)
1. Kg2-f3 Qd7xd3! 2. Nc2-e3! Qd3-b1 3. b2-b4! Qb1-b3 4. Rh6xh7 Qb3xc3
= (-0.73) Depth: 9/32 00:00:01.23 386kN (313 KN/s, 296 splits, 14 aborts)
1. Kg2-f3 Qd7xd3! 2. Nc2-e3! Qd3-b1 3. b2-b4! Qb1-b3 4. Rh6xh7 Qb3xc3
= (-0.73) Depth: 9/32 00:00:01.73 557kN (321 KN/s, 407 splits, 20 aborts)
1. Kg2-f3 Qd7xd3! 2. Nc2-e3! Qd3-b1 3. b2-b4! Qb1-a1 4. c3-c4 Qa1xe5 5. b4-b5 Qe5-a1 6. Rh6xh7 Qa1xa4
= (-1.25) Depth: 10/38 00:00:02.56 855kN (334 KN/s, 488 splits, 24 aborts)
1. Kg2-f3 Qd7xd3! 2. Nc2-e3! Qd3-b1 3. b2-b4! Qb1-a1 4. c3-c4 Qa1xe5 5. b4-b5 Qe5-a1 6. Rh6xh7 Qa1xa4
= (-1.25) Depth: 10/39 00:00:05.29 1896kN (358 KN/s, 802 splits, 44 aborts)
1. Kg2-f3 Qd7xd3! 2. Nc2-e3! Qd3-b1 3. b2-b4 Qb1-a1 4. c3-c4 Qa1xe5 5. b4-b5 Qe5-a1 6. Rh6xh7 Qa1xa4
= (-1.25) Depth: 11/39 00:00:05.90 2117kN (359 KN/s, 888 splits, 49 aborts)
1. Kg2-f3 Qd7xd3! 2. Nc2-e3! Qd3-b1 3. b2-b4 Qb1-a1 4. c3-c4 Qa1xe5 5. b4-b5 Qe5-a1 6. Rh6xh7 Qa1xa4
= (-1.25) Depth: 11/39 00:00:07.43 2755kN (370 KN/s, 1249 splits, 68 aborts)
1. Kg2-f3 Qd7xd3! 2. Nc2-e3! Qd3-b1! 3. b2-b4 Qb1-a1 4. c3-c4 Qa1xe5! 5. b4-b5 Qe5-g7 6. Rh6-h5 Qg7-f6 7. Kf3-e4 Qf6-a1
= (-1.29) Depth: 12/40 00:00:11.51 4223kN (367 KN/s, 1552 splits, 101 aborts)
1. Kg2-f3 Qd7xd3! 2. Nc2-e3! Qd3-b1! 3. b2-b4 Qb1-a1 4. c3-c4 Qa1xe5! 5. b4-b5 Qe5-g7 6. Rh6-h5 Qg7-f6 7. Kf3-e4 Qf6-a1
= (-1.29) Depth: 12/42 00:00:17.17 6565kN (382 KN/s, 2234 splits, 150 aborts)
1. Kg2-f3 Qd7xd3! 2. Nc2-e3! Qd3-b1! 3. b2-b4 Qb1-a1 4. c3-c4 Qa1xe5 5. b4-b5 Qe5-g7 6. Rh6-h5 Qg7-f6 7. Kf3-e4 Qf6-a1
= (-1.29) Depth: 13/45 00:00:24.07 9079kN (377 KN/s, 2829 splits, 214 aborts)
1. Kg2-f3 Qd7xd3! 2. Nc2-e3! Qd3-b1! 3. b2-b4 Qb1-a1 4. c3-c4 Qa1xe5 5. b4-b5 Qe5-g7 6. Rh6-h5 Qg7-f6 7. Kf3-e4 Qf6-a1
= (-1.29) Depth: 13/45 00:00:31.96 12428kN (389 KN/s, 3871 splits, 291 aborts)
1. Kg2-f3 Qd7xd3! 2. Nc2-e3! Qd3-b1 3. b2-b4 Qb1-a1 4. c3-c4 Qa1xe5 5. b4-b5 Qe5-g7 6. Rh6-h5 Qg7-f6 7. Kf3-e4 Qf6-a1
= (-1.29) Depth: 14/45 00:00:36.34 14114kN (388 KN/s, 4512 splits, 344 aborts)
1. Kg2-f3 Qd7xd3! 2. Nc2-e3! Qd3-b1 3. b2-b4 Qb1-a1 4. c3-c4 Qa1xe5 5. b4-b5 Qe5-g7 6. Rh6-h5 Qg7-f6 7. Kf3-e4 Qf6-a1
= (-1.29) Depth: 14/47 00:00:58.46 23398kN (400 KN/s, 6688 splits, 465 aborts)
1. Kg2-f3 Qd7xd3! 2. Nc2-e3! Qd3-b1 3. b2-b4 Qb1-a1 4. c3-c4 Qa1xe5 5. b4-b5 Qe5-e7 6. Rh6-h5 a6-a5 7. Kf3-f4 Qe7-f6
= (-1.46) Depth: 15/49 00:01:21.71 32879kN (402 KN/s, 8468 splits, 637 aborts)
1. Nc2-d4 Qd7-g7! 2. Kg2-h3! Qg7xh6! 3. Nd3-f4! Kd8-e8 4. Nd4-e6! c7-c6 5. Kh3-g4 b6-b5 6. a4xb5 c6xb5 7. h4-h5 a6-a5 8. Kg4-f5 b5-b4 9. c3xb4 a5xb4
= (-0.97) Depth: 15/49 00:01:58.61 48566kN (409 KN/s, 14956 splits, 1081 aborts)
1. Nc2-d4 Qd7-g7! 2. Kg2-h3! Qg7xh6! 3. Nd3-f4! Kd8-e8 4. Nd4-e6! c7-c6 5. Kh3-g4 b6-b5 6. a4xb5 c6xb5 7. h4-h5 a6-a5 8. Kg4-f5 b5-b4 9. c3xb4 a5xb4
= (-0.97) Depth: 15/49 00:02:35.65 64194kN (412 KN/s, 20250 splits, 1383 aborts)
1. Nc2-d4 Qd7-g7! 2. Kg2-h3! Qg7xh6! 3. Nd3-f4! Kd8-e8 4. Nd4-e6! c7-c6 5. Kh3-g4 b6-b5 6. a4xb5 c6xb5 7. h4-h5 a6-a5 8. Kg4-f5 b5-b4 9. c3xb4 a5xb4 10. Kf5-e4
= (-0.94) Depth: 16/51 00:03:23.42 85234kN (419 KN/s, 27698 splits, 1816 aborts)
1. Nc2-d4 Qd7-g7! 2. Kg2-h3! Qg7xh6! 3. Nd3-f4! Kd8-e8 4. Nd4-e6! c7-c6 5. Kh3-g4 b6-b5 6. a4xb5 c6xb5 7. h4-h5 a6-a5 8. Kg4-f5 b5-b4 9. c3xb4 a5xb4 10. Kf5-e4
= (-0.94) Depth: 16/51 00:04:43.84 119619kN (421 KN/s, 39956 splits, 2499 aborts)
1. Nc2-d4 Qd7-g7! 2. Kg2-h3! Qg7xh6! 3. Nd3-f4! Kd8-e8 4. Nd4-e6! c7-c6 5. Kh3-g4 b6-b5 6. a4xb5 c6xb5 7. h4-h5 a6-a5 8. Kg4-f5 b5-b4 9. c3xb4 a5xb4! 10. Ne6-c7 Ke8-d8 11. Nc7-e6
= (-0.96) Depth: 17/53 00:05:52.32 151279kN (429 KN/s, 54057 splits, 3262 aborts)
1. Nc2-d4 Qd7-g7! 2. Kg2-h3! Qg7xh6! 3. Nd3-f4! Kd8-e8 4. Nd4-e6! c7-c6 5. Kh3-g4 b6-b5 6. a4xb5 c6xb5 7. h4-h5 a6-a5 8. Kg4-f5 b5-b4 9. c3xb4 a5xb4! 10. Ne6-c7 Ke8-d8 11. Nc7-e6
= (-0.96) Depth: 17/53 00:08:37.09 222875kN (431 KN/s, 67994 splits, 4278 aborts)
1. Nc2-d4 Qd7-g7! 2. Kg2-h3! Qg7xh6! 3. Nd3-f4! Kd8-e8 4. Nd4-e6! c7-c6 5. Kh3-g4 Ke8-f7 6. h4-h5 Kf7-e7 7. Kg4-f5 Ke7-e8 8. b2-b4 a6-a5 9. b4xa5 b6xa5! 10. c3-c4 Ke8-d7 11. Kf5-e4
= (-0.88) Depth: 18/55 00:11:55.81 308915kN (432 KN/s, 94688 splits, 5793 aborts)
1. Nc2-d4 Qd7-g7! 2. Kg2-h3! Qg7xh6! 3. Nd3-f4! Kd8-e8 4. Nd4-e6! c7-c6 5. Kh3-g4 Ke8-f7 6. h4-h5 Kf7-e7 7. Kg4-f5 Ke7-e8 8. b2-b4 a6-a5 9. b4xa5 b6xa5! 10. c3-c4 Ke8-d7 11. Kf5-e4
= (-0.88) Depth: 18/55 00:17:15.43 443435kN (428 KN/s, 132403 splits, 7786 aborts)
1. Nc2-d4 Qd7-g7! 2. Kg2-h3! Qg7xh6! 3. Nd3-f4! Kd8-e8 4. Nd4-e6! c7-c6 5. Kh3-g4 Ke8-f7 6. h4-h5 Kf7-e7 7. Kg4-f5 Ke7-e8 8. b2-b4 Ke8-f7 9. Ne6-g5 Kf7-e7 10. Ng5-e6 Ke7-e8 11. a4-a5 b6xa5 12. b4xa5 Ke8-d7
= (-0.88) Depth: 19/57 00:23:15.93 598307kN (429 KN/s, 174087 splits, 9818 aborts)
1. Nc2-d4 Qd7-g7! 2. Kg2-h3! Qg7xh6! 3. Nd3-f4! Kd8-e8 4. Nd4-e6! c7-c6 5. Kh3-g4 Ke8-f7 6. h4-h5 Kf7-e7 7. Kg4-f5 Ke7-e8 8. b2-b4 Ke8-f7 9. Ne6-g5 Kf7-e7 10. Ng5-e6 Ke7-e8 11. a4-a5 b6xa5 12. b4xa5 Ke8-d7
= (-0.88) Depth: 19/57 00:35:17.39 889276kN (420 KN/s, 217247 splits, 12699 aborts)
1. Nc2-d4 Qd7-g7! 2. Kg2-h3! Qg7xh6! 3. Nd3-f4! Kd8-e8 4. Nd4-e6! c7-c6 5. b2-b4 Ke8-f7 6. Kh3-g4 Kf7-e7 7. h4-h5 a6-a5 8. b4xa5 b6xa5! 9. Kg4-f5 Ke7-d7 10. Kf5-e4 Kd7-e8 11. Ke4-f5 Ke8-e7
= (-0.86) Depth: 20/59 00:52:04.17 1315311kN (421 KN/s, 296627 splits, 16661 aborts)
1. Nc2-d4 Qd7-g7! 2. Kg2-h3! Qg7xh6! 3. Nd3-f4! Kd8-e8 4. Nd4-e6! c7-c6 5. b2-b4 Ke8-f7 6. Kh3-g4 Kf7-e7 7. h4-h5 a6-a5 8. b4xa5 b6xa5! 9. Kg4-f5 Ke7-d7 10. Kf5-e4 Kd7-e8 11. Ke4-f5 Ke8-e7
= (-0.86) Depth: 20/59 01:21:26.34 2041403kN (418 KN/s, 411013 splits, 22890 aborts)
Count: Time: 4996.953s, Nodes: 2087132288 Qnodes: 1427440082[68.4%][55.5%], NPS: 418K
Hash: TProbes: 2082038880[99.8%] TPings: 1062397473[51.0%] THits: 604539320[29.0%] TUsed: 60819356[100.0%]
EHash: KHits 852427740[84.2%] PHits 157585505[98.3%] POverall: 1010013245[99.7%]
Exts: Check: 115730476 Singular: 446662 Mate: 0 One-rep: 0 IID: 0[0.0%]
TB: Probes: 16 Hits: 11[68.8%]
Idle: CPU0: 3.161 CPU1: 3.011
White: used 0.000 seconds, now 0.000 remaining[d]8/7p/4N2q/4P2P/2K2N2/2P5/2k5/8 b - - 0 1
Arena showed 88389 TB hits when I stopped the analysis after more less 1000 seconds. Here is the log file of Zappa:FEN: 8/7p/4N2q/4P2P/2K2N2/2P5/2k5/8 b - - 0 1
Zappa Mexico II:
12/26 00:04 177.819 379.145 -1,15 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6a7
12/26 00:04 225.152 379.044 -1,15 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6a7
13/26 00:04 338.890 409.287 -9,13 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6a7 Kd5d6 Ka7b8 c6c7+ Kb8c8
13/26 00:04 420.893 420.893 -9,13 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6a7 Kd5d6 Ka7b8 c6c7+ Kb8c8
14/40 00:06 1.365.660 422.282 -15,00 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Kb6b5 c6c7 Kb5b4 c7c8Q
14/40 00:07 1.744.915 437.981 -15,00 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Kb6b5 c6c7 Kb5b4 c7c8Q
15/47 00:10 2.950.889 442.280 -16,44 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Kb6b5 c6c7 Kb5b4 c7c8Q Kb4b3 Qc8f8 Qh6xf8+ Ne6xf8 Kb3c4 Nf8xh7 Kc4b3
15/47 00:11 3.661.452 455.008 -16,44 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Kb6b5 c6c7 Kb5b4 c7c8Q Kb4b3 Qc8f8 Qh6xf8+ Ne6xf8 Kb3c4 Nf8xh7 Kc4b3
16/48 00:20 7.489.372 432.212 -20,10 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6a7 Kd5d6 Ka7b8 Kd6d7 Qh6xe6+ Nf4xe6 Kb8a8 Ne6f4 Ka8b8 c6c7+ Kb8b7 c7c8Q+
16/48 00:25 9.434.830 432.850 -19,81 Kc2d2 Kc4d4 Kd2e1 c3c4 Ke1f2 c4c5 Kf2f3 c5c6 Qh6xf4+ Ne6xf4 Kf3xf4 e5e6 Kf4f3 e6e7 Kf3e2 e7e8Q+ Ke2d2 c6c7
16/48 00:28 10.816.614 439.253 -19,81 Kc2d2 Kc4d4 Kd2e1 c3c4 Ke1f2 c4c5 Kf2f3 c5c6 Qh6xf4+ Ne6xf4 Kf3xf4 e5e6 Kf4f3 e6e7 Kf3e2 e7e8Q+ Ke2d2 c6c7 h7h6
17/53 01:17 33.669.526 457.212 -M13 Kc2d2 Kc4d4 Kd2e1 c3c4 Ke1d2 c4c5 Kd2e1 c5c6 Ke1f2 c6c7 Kf2f3 c7c8Q Qh6xf4+ Ne6xf4 Kf3xf4 e5e6 Kf4g5 e6e7 Kg5xh5 e7e8Q+ Kh5h4 Qe8e7+ Kh4h5 Qe7xh7+ Kh5g5 Qc8f5+
17/53 01:18 34.437.999 459.842 -20,10 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6a7 Kd5d6 Ka7b8 Kd6d7 Qh6xe6+ Nf4xe6 Kb8a8 Ne6f4 Ka8b8 c6c7+ Kb8b7 c7c8Q+
17/53 01:21 36.151.223 462.552 -20,10 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6a7 Kd5d6 Ka7b8 Kd6d7 Qh6xe6+ Nf4xe6 Kb8a8 Ne6f4 Ka8b8 c6c7+ Kb8b7 c7c8Q+
18/55 01:50 50.742.072 472.639 -M16 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Qh6xe6+ Nf4xe6 Kb6b5 c6c7 Kb5c4 c7c8Q+ Kc4d3 Ne6c5+ Kd3d2 Qc8h3 Kd2c1 Qh3c3+ Kc1d1 Qc3d3+ Kd1c1 Qd3e2 h7h6 Nc5d3+ Kc1b1 Qe2b2+
18/55 01:58 53.870.875 468.569 -M16 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Qh6xe6+ Nf4xe6 Kb6b5 c6c7 Kb5c4 c7c8Q+ Kc4d3 Ne6c5+ Kd3d2 Qc8h3 Kd2c1 Qh3c3+ Kc1d1 Qc3d3+ Kd1c1 Qd3e2 h7h6 Nc5d3+ Kc1b1 Qe2b2+
19/55 02:10 60.197.793 475.579 -M16 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Qh6xe6+ Nf4xe6 Kb6b5 c6c7 Kb5c4 c7c8Q+ Kc4d3 Ne6c5+ Kd3d2 Qc8h3 Kd2c1 Qh3c3+ Kc1d1 Qc3d3+ Kd1c1 Qd3e2 h7h6 Nc5d3+ Kc1b1 Qe2b2+
19/55 02:10 60.197.805 475.579 -M16 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Qh6xe6+ Nf4xe6 Kb6b5 c6c7 Kb5c4 c7c8Q+ Kc4d3 Ne6c5+ Kd3d2 Qc8h3 Kd2c1 Qh3c3+ Kc1d1 Qc3d3+ Kd1c1 Qd3e2 h7h6 Nc5d3+ Kc1b1 Qe2b2+
20/55 02:33 72.712.929 484.249 -M16 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Qh6xe6+ Nf4xe6 Kb6b5 c6c7 Kb5c4 c7c8Q+ Kc4d3 Ne6c5+ Kd3d2 Qc8h3 Kd2c1 Qh3c3+ Kc1d1 Qc3d3+ Kd1c1 Qd3e2 h7h6 Nc5d3+ Kc1b1 Qe2b2+
20/55 02:33 72.712.941 484.249 -M16 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Qh6xe6+ Nf4xe6 Kb6b5 c6c7 Kb5c4 c7c8Q+ Kc4d3 Ne6c5+ Kd3d2 Qc8h3 Kd2c1 Qh3c3+ Kc1d1 Qc3d3+ Kd1c1 Qd3e2 h7h6 Nc5d3+ Kc1b1 Qe2b2+
21/55 03:13 92.623.232 488.496 -M16 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Qh6xe6+ Nf4xe6 Kb6b5 c6c7 Kb5c4 c7c8Q+ Kc4d3 Ne6c5+ Kd3d2 Qc8h3 Kd2c1 Qh3c3+ Kc1d1 Qc3d3+ Kd1c1 Qd3e2 h7h6 Nc5d3+ Kc1b1 Qe2b2+
21/55 03:13 92.623.244 488.496 -M16 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Qh6xe6+ Nf4xe6 Kb6b5 c6c7 Kb5c4 c7c8Q+ Kc4d3 Ne6c5+ Kd3d2 Qc8h3 Kd2c1 Qh3c3+ Kc1d1 Qc3d3+ Kd1c1 Qd3e2 h7h6 Nc5d3+ Kc1b1 Qe2b2+
22/60 05:00 151.810.789 511.685 -M15 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Qh6xe6+ Nf4xe6 Kb6b5 c6c7 Kb5c4 c7c8Q+ Kc4d3 Kd6c5 Kd3e2 Qc8f8 Ke2d1 Ne6d4 Kd1c1 Qf8f2 Kc1b1 Qf2c2+ Kb1a1 Nd4b3+
22/60 05:44 175.913.150 516.442 -M15 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Qh6xe6+ Nf4xe6 Kb6b5 c6c7 Kb5c4 c7c8Q+ Kc4d3 Kd6c5 Kd3e2 Qc8f8 Ke2d1 Ne6d4 Kd1c1 Qf8f2 Kc1b1 Qf2c2+ Kb1a1 Nd4b3+
23/62 08:13 253.462.751 517.172 -M15 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Qh6xe6+ Nf4xe6 Kb6b5 c6c7 Kb5c4 c7c8Q+ Kc4d3 Kd6c5 Kd3e2 Qc8f8 Ke2d1 Ne6d4 Kd1c1 Qf8f2 Kc1b1 Qf2c2+ Kb1a1 Nd4b3+
23/62 08:13 253.462.763 517.172 -M15 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Qh6xe6+ Nf4xe6 Kb6b5 c6c7 Kb5c4 c7c8Q+ Kc4d3 Kd6c5 Kd3e2 Qc8f8 Ke2d1 Ne6d4 Kd1c1 Qf8f2 Kc1b1 Qf2c2+ Kb1a1 Nd4b3+
24/62 10:43 334.369.586 522.861 -M15 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Qh6xe6+ Nf4xe6 Kb6b5 c6c7 Kb5c4 c7c8Q+ Kc4d3 Kd6c5 Kd3e2 Qc8f8 Ke2d1 Ne6d4 Kd1c1 Qf8f2 Kc1b1 Qf2c2+ Kb1a1 Nd4b3+
24/62 10:43 334.369.598 522.861 -M15 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Qh6xe6+ Nf4xe6 Kb6b5 c6c7 Kb5c4 c7c8Q+ Kc4d3 Kd6c5 Kd3e2 Qc8f8 Ke2d1 Ne6d4 Kd1c1 Qf8f2 Kc1b1 Qf2c2+ Kb1a1 Nd4b3+
25/62 15:24 479.749.476 520.821 -M15 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Qh6xe6+ Nf4xe6 Kb6b5 c6c7 Kb5c4 c7c8Q+ Kc4d3 Kd6c5 Kd3e2 Qc8f8 Ke2d1 Ne6d4 Kd1c1 Qf8f2 Kc1b1 Qf2c2+ Kb1a1 Nd4b3+
25/62 15:24 479.749.488 520.821 -M15 Kc2b2 Kc4d4 Kb2b3 c3c4 Kb3b4 c4c5 Kb4b5 Kd4d5 Kb5a6 c5c6 Ka6b6 Kd5d6 Qh6xe6+ Nf4xe6 Kb6b5 c6c7 Kb5c4 c7c8Q+ Kc4d3 Kd6c5 Kd3e2 Qc8f8 Ke2d1 Ne6d4 Kd1c1 Qf8f2 Kc1b1 Qf2c2+ Kb1a1 Nd4b3+
Code: Select all
[...]
set_option(): ignore remote memory values = 1
set_option(): memory = 67108864
Auto-adjusting 64.000000MB for 1CPUs
set_option(): print_singular_moves = 1
Auto-adjusting 0.000000MB for 1CPUs
CPU0 starting.
CPU1 starting.
Auto-adjusting 64.000000MB for 2CPUs
set_option(): set idle timer to 700000000 iterations per second
Bad option in file zappa.ini on line 84.
Bad option in file zappa.ini on line 85.
Bad option in file zappa.ini on line 86.
Bad option in file zappa.ini on line 87.
Bad option in file zappa.ini on line 88.
Bad option in file zappa.ini on line 89.
Bad option in file zappa.ini on line 90.
Bad option in file zappa.ini on line 91.
hash_table::resize(): Resized hash table "Transposition Table 1" to 28521267 bytes. (445644 entries of 64 bytes)
hash_table::resize(): Resized hash table "Transposition Table 0" to 28521267 bytes. (445644 entries of 64 bytes)
hash_table::resize(): Resized hash table "King hash 0" to 3355443 bytes. (52428 entries of 64 bytes)
hash_table::resize(): Resized hash table "King hash 1" to 3355443 bytes. (52428 entries of 64 bytes)
hash_table::resize(): Resized hash table "Pawn hash 0" to 1677721 bytes. (26214 entries of 64 bytes)
hash_table::resize(): Resized hash table "Pawn hash 1" to 1677721 bytes. (26214 entries of 64 bytes)
set_option(): tbcache = 67108864
tablebase_init(): searching for Nalimov tablebases at path "C:\[...]"
tablebase_init(): found TBs with up to 5 pieces.
tablebase_init(): TB indices & decompression using 19457kb of memory
hash_table::resize(): Resized hash table "tb cache 0" to 8388608 bytes. (8388608 entries of 1 bytes)
tablebase_init(): allocated 8.00 MB for the tablebase cache.
set_option(): memory = 1073741824
Auto-adjusting 1024.000000MB for 2CPUs
hash_table::resize(): Resized hash table "tb cache 0" to 67108864 bytes. (67108864 entries of 1 bytes)
tablebase_init(): allocated 64.00 MB for the tablebase cache.
set_option(): internet_lag = 0
set_option(): eval_kingsafety_scoring = 100
set_option(): eval_major_scoring = 100
set_option(): eval_minor_scoring = 100
set_option(): eval_pawn_scoring = 100
set_option(): eval_passed_pawn_scoring = 100
set_option(): tb_min_depth = 4
set_option(): enable_mate_extension = 1
Setting Clock: fixed time per move of 10000000000.000s
hash_table::resize(): Resized hash table "Transposition Table 1" to 486539264 bytes. (7602176 entries of 64 bytes)
hash_table::resize(): Resized hash table "Transposition Table 0" to 486539264 bytes. (7602176 entries of 64 bytes)
hash_table::resize(): Resized hash table "King hash 1" to 33554432 bytes. (524288 entries of 64 bytes)
hash_table::resize(): Resized hash table "King hash 0" to 33554432 bytes. (524288 entries of 64 bytes)
hash_table::resize(): Resized hash table "Pawn hash 1" to 16777216 bytes. (262144 entries of 64 bytes)
hash_table::resize(): Resized hash table "Pawn hash 0" to 16777216 bytes. (262144 entries of 64 bytes)
- - - - - - - -
- - - - - - - p
- - - - N - - q
- - - - P - - P
- - K - - N - -
- - P - - - - -
- - k - - - - -
- - - - - - - -
WQC:0 WKC:0 BQC:0 BKC:0 Turn:BLACK EP:0
MB: -300 WPC: 2 BPC: 1 HM:0 HKL:9300E9B5 HKH:38E51D1B
8/7p/4N2q/4P2P/2K2N2/2P5/2k5/8 b - - 0 1
Book: (0 entries / 0 bytes / 0s)
Book: No move selected.
1... Kc2-b2 2. Kc4-d4 Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5 Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6 Ka6-a7
= (1.15) Depth: 12/26 00:00:00.46 177kN (379 KN/s, 372 splits, 7 aborts)
1... Kc2-b2 2. Kc4-d4 Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5 Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6 Ka6-a7
= (1.15) Depth: 12/26 00:00:00.59 225kN (379 KN/s, 532 splits, 13 aborts)
1... Kc2-b2 2. Kc4-d4 Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5 Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-a7! 7. Kd5-d6! Ka7-b8 8. c6-c7! Kb8-c8
= (9.13) Depth: 13/26 00:00:00.82 338kN (409 KN/s, 661 splits, 18 aborts)
1... Kc2-b2 2. Kc4-d4 Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5 Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-a7! 7. Kd5-d6! Ka7-b8 8. c6-c7! Kb8-c8
= (9.13) Depth: 13/26 00:00:01.00 420kN (421 KN/s, 866 splits, 26 aborts)
1... Kc2-b2 2. Kc4-d4! Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6 Kb6-b5 8. c6-c7 Kb5-b4 9. c7-c8=Q
= (15.00) Depth: 14/40 00:00:03.23 1365kN (422 KN/s, 1645 splits, 83 aborts)
1... Kc2-b2 2. Kc4-d4! Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6 Kb6-b5 8. c6-c7 Kb5-b4 9. c7-c8=Q
= (15.00) Depth: 14/40 00:00:03.98 1744kN (438 KN/s, 2496 splits, 124 aborts)
1... Kc2-b2 2. Kc4-d4! Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6! Kb6-b5 8. c6-c7! Kb5-b4 9. c7-c8=Q Kb4-b3! 10. Qc8-f8! Qh6xf8! 11. Ne6xf8! Kb3-c4! 12. Nf8xh7 Kc4-b3
= (16.44) Depth: 15/47 00:00:06.67 2950kN (442 KN/s, 3629 splits, 231 aborts)
1... Kc2-b2 2. Kc4-d4! Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6! Kb6-b5 8. c6-c7! Kb5-b4 9. c7-c8=Q Kb4-b3! 10. Qc8-f8! Qh6xf8! 11. Ne6xf8! Kb3-c4! 12. Nf8xh7 Kc4-b3
= (16.44) Depth: 15/47 00:00:08.04 3661kN (455 KN/s, 4535 splits, 307 aborts)
1... Kc2-b2 2. Kc4-d4! Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-a7 7. Kd5-d6 Ka7-b8 8. Kd6-d7 Qh6xe6 9. Nf4xe6 Kb8-a8 10. Ne6-f4! Ka8-b8 11. c6-c7! Kb8-b7 12. c7-c8=Q
= (20.10) Depth: 16/48 00:00:17.32 7489kN (432 KN/s, 7179 splits, 561 aborts)
1... Kc2-d2 2. Kc4-d4 Kd2-e1 3. c3-c4! Ke1-f2 4. c4-c5! Kf2-f3 5. c5-c6 Qh6xf4 6. Ne6xf4! Kf3xf4 7. e5-e6! Kf4-f3 8. e6-e7 Kf3-e2 9. e7-e8=Q Ke2-d2 10. c6-c7
= (19.81) Depth: 16/48 00:00:21.79 9434kN (433 KN/s, 9269 splits, 752 aborts)
1... Kc2-d2 2. Kc4-d4 Kd2-e1 3. c3-c4! Ke1-f2 4. c4-c5! Kf2-f3 5. c5-c6! Qh6xf4 6. Ne6xf4! Kf3xf4 7. e5-e6! Kf4-f3 8. e6-e7 Kf3-e2 9. e7-e8=Q Ke2-d2 10. c6-c7 h7-h6
= (19.81) Depth: 16/48 00:00:24.62 10816kN (439 KN/s, 10747 splits, 886 aborts)
1... Kc2-d2 2. Kc4-d4! Kd2-e1 3. c3-c4! Ke1-d2 4. c4-c5! Kd2-e1 5. c5-c6! Ke1-f2[M] 6. c6-c7 Kf2-f3[M] 7. c7-c8=Q! Qh6xf4[M] 8. Ne6xf4! Kf3xf4 9. e5-e6 Kf4-g5 10. e6-e7! Kg5xh5 11. e7-e8=Q Kh5-h4 12. Qe8-e7 Kh4-h5 13. Qe7xh7 Kh5-g5 14. Qc8-f5
= (MAT13) Depth: 17/53 00:01:13.64 33669kN (457 KN/s, 23707 splits, 2176 aborts)
1... Kc2-b2 2. Kc4-d4 Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-a7 7. Kd5-d6 Ka7-b8 8. Kd6-d7 Qh6xe6 9. Nf4xe6 Kb8-a8 10. Ne6-f4! Ka8-b8 11. c6-c7! Kb8-b7 12. c7-c8=Q
= (20.10) Depth: 17/53 00:01:14.89 34437kN (460 KN/s, 24545 splits, 2260 aborts)
1... Kc2-b2 2. Kc4-d4 Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-a7 7. Kd5-d6 Ka7-b8 8. Kd6-d7 Qh6xe6 9. Nf4xe6 Kb8-a8 10. Ne6-f4! Ka8-b8 11. c6-c7! Kb8-b7 12. c7-c8=Q
= (20.10) Depth: 17/53 00:01:18.15 36151kN (463 KN/s, 27692 splits, 2343 aborts)
1... Kc2-b2 2. Kc4-d4! Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6 Qh6xe6[M] 8. Nf4xe6 Kb6-b5 9. c6-c7! Kb5-c4 10. c7-c8=Q! Kc4-d3 11. Ne6-c5! Kd3-d2 12. Qc8-h3! Kd2-c1 13. Qh3-c3 Kc1-d1 14. Qc3-d3 Kd1-c1 15. Qd3-e2 h7-h6 16. Nc5-d3 Kc1-b1 17. Qe2-b2
= (MAT16) Depth: 18/55 00:01:47.35 50742kN (473 KN/s, 35098 splits, 3025 aborts)
1... Kc2-b2 2. Kc4-d4! Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6 Qh6xe6[M] 8. Nf4xe6 Kb6-b5 9. c6-c7! Kb5-c4 10. c7-c8=Q! Kc4-d3 11. Ne6-c5! Kd3-d2 12. Qc8-h3! Kd2-c1 13. Qh3-c3 Kc1-d1 14. Qc3-d3 Kd1-c1 15. Qd3-e2 h7-h6 16. Nc5-d3 Kc1-b1 17. Qe2-b2
= (MAT16) Depth: 18/55 00:01:54.96 53870kN (469 KN/s, 37662 splits, 3172 aborts)
1... Kc2-b2 2. Kc4-d4! Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6! Qh6xe6[M] 8. Nf4xe6! Kb6-b5 9. c6-c7 Kb5-c4 10. c7-c8=Q! Kc4-d3 11. Ne6-c5 Kd3-d2 12. Qc8-h3! Kd2-c1 13. Qh3-c3 Kc1-d1 14. Qc3-d3 Kd1-c1 15. Qd3-e2 h7-h6 16. Nc5-d3 Kc1-b1 17. Qe2-b2
= (MAT16) Depth: 19/55 00:02:06.57 60197kN (476 KN/s, 43091 splits, 3262 aborts)
1... Kc2-b2 2. Kc4-d4! Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6! Qh6xe6[M] 8. Nf4xe6! Kb6-b5 9. c6-c7 Kb5-c4 10. c7-c8=Q! Kc4-d3 11. Ne6-c5 Kd3-d2 12. Qc8-h3! Kd2-c1 13. Qh3-c3 Kc1-d1 14. Qc3-d3 Kd1-c1 15. Qd3-e2 h7-h6 16. Nc5-d3 Kc1-b1 17. Qe2-b2
= (MAT16) Depth: 19/55 00:02:06.57 60197kN (476 KN/s, 43091 splits, 3262 aborts)
1... Kc2-b2 2. Kc4-d4! Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6! Qh6xe6[M] 8. Nf4xe6! Kb6-b5 9. c6-c7 Kb5-c4 10. c7-c8=Q! Kc4-d3 11. Ne6-c5 Kd3-d2 12. Qc8-h3 Kd2-c1 13. Qh3-c3 Kc1-d1 14. Qc3-d3 Kd1-c1 15. Qd3-e2 h7-h6 16. Nc5-d3 Kc1-b1 17. Qe2-b2
= (MAT16) Depth: 20/55 00:02:30.15 72712kN (484 KN/s, 53887 splits, 3388 aborts)
1... Kc2-b2 2. Kc4-d4! Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6! Qh6xe6[M] 8. Nf4xe6! Kb6-b5 9. c6-c7 Kb5-c4 10. c7-c8=Q! Kc4-d3 11. Ne6-c5 Kd3-d2 12. Qc8-h3 Kd2-c1 13. Qh3-c3 Kc1-d1 14. Qc3-d3 Kd1-c1 15. Qd3-e2 h7-h6 16. Nc5-d3 Kc1-b1 17. Qe2-b2
= (MAT16) Depth: 20/55 00:02:30.15 72712kN (484 KN/s, 53887 splits, 3388 aborts)
1... Kc2-b2 2. Kc4-d4! Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6! Qh6xe6[M] 8. Nf4xe6! Kb6-b5 9. c6-c7 Kb5-c4 10. c7-c8=Q Kc4-d3 11. Ne6-c5 Kd3-d2 12. Qc8-h3 Kd2-c1 13. Qh3-c3 Kc1-d1 14. Qc3-d3 Kd1-c1 15. Qd3-e2 h7-h6 16. Nc5-d3 Kc1-b1 17. Qe2-b2
= (MAT16) Depth: 21/55 00:03:09.60 92623kN (488 KN/s, 79849 splits, 3522 aborts)
1... Kc2-b2 2. Kc4-d4! Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6! Qh6xe6[M] 8. Nf4xe6! Kb6-b5 9. c6-c7 Kb5-c4 10. c7-c8=Q Kc4-d3 11. Ne6-c5 Kd3-d2 12. Qc8-h3 Kd2-c1 13. Qh3-c3 Kc1-d1 14. Qc3-d3 Kd1-c1 15. Qd3-e2 h7-h6 16. Nc5-d3 Kc1-b1 17. Qe2-b2
= (MAT16) Depth: 21/55 00:03:09.60 92623kN (488 KN/s, 79849 splits, 3522 aborts)
1... Kc2-b2 2. Kc4-d4! Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6! Qh6xe6[M] 8. Nf4xe6! Kb6-b5 9. c6-c7 Kb5-c4 10. c7-c8=Q Kc4-d3 11. Kd6-c5 Kd3-e2 12. Qc8-f8 Ke2-d1 13. Ne6-d4 Kd1-c1 14. Qf8-f2 Kc1-b1 15. Qf2-c2 Kb1-a1 16. Nd4-b3
= (MAT15) Depth: 22/60 00:04:56.68 151810kN (512 KN/s, 135156 splits, 4690 aborts)
1... Kc2-b2 2. Kc4-d4! Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6! Qh6xe6[M] 8. Nf4xe6! Kb6-b5 9. c6-c7 Kb5-c4 10. c7-c8=Q Kc4-d3 11. Kd6-c5 Kd3-e2 12. Qc8-f8 Ke2-d1 13. Ne6-d4 Kd1-c1 14. Qf8-f2 Kc1-b1 15. Qf2-c2 Kb1-a1 16. Nd4-b3
= (MAT15) Depth: 22/60 00:05:40.62 175913kN (516 KN/s, 180691 splits, 5172 aborts)
1... Kc2-b2 2. Kc4-d4! Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6! Qh6xe6[M] 8. Nf4xe6! Kb6-b5 9. c6-c7 Kb5-c4 10. c7-c8=Q Kc4-d3 11. Kd6-c5 Kd3-e2 12. Qc8-f8 Ke2-d1 13. Ne6-d4 Kd1-c1 14. Qf8-f2 Kc1-b1 15. Qf2-c2! Kb1-a1! 16. Nd4-b3
= (MAT15) Depth: 23/62 00:08:10.09 253462kN (517 KN/s, 275810 splits, 6138 aborts)
1... Kc2-b2 2. Kc4-d4! Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6! Qh6xe6[M] 8. Nf4xe6! Kb6-b5 9. c6-c7 Kb5-c4 10. c7-c8=Q Kc4-d3 11. Kd6-c5 Kd3-e2 12. Qc8-f8 Ke2-d1 13. Ne6-d4 Kd1-c1 14. Qf8-f2 Kc1-b1 15. Qf2-c2! Kb1-a1! 16. Nd4-b3
= (MAT15) Depth: 23/62 00:08:10.09 253462kN (517 KN/s, 275810 splits, 6138 aborts)
1... Kc2-b2 2. Kc4-d4 Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6! Qh6xe6[M] 8. Nf4xe6! Kb6-b5 9. c6-c7 Kb5-c4 10. c7-c8=Q Kc4-d3 11. Kd6-c5 Kd3-e2 12. Qc8-f8 Ke2-d1 13. Ne6-d4 Kd1-c1 14. Qf8-f2 Kc1-b1 15. Qf2-c2! Kb1-a1! 16. Nd4-b3
= (MAT15) Depth: 24/62 00:10:39.50 334369kN (523 KN/s, 349558 splits, 7496 aborts)
1... Kc2-b2 2. Kc4-d4 Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5! Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6! Qh6xe6[M] 8. Nf4xe6! Kb6-b5 9. c6-c7 Kb5-c4 10. c7-c8=Q Kc4-d3 11. Kd6-c5 Kd3-e2 12. Qc8-f8 Ke2-d1 13. Ne6-d4 Kd1-c1 14. Qf8-f2 Kc1-b1 15. Qf2-c2! Kb1-a1! 16. Nd4-b3
= (MAT15) Depth: 24/62 00:10:39.50 334369kN (523 KN/s, 349558 splits, 7496 aborts)
1... Kc2-b2 2. Kc4-d4 Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5 Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6! Qh6xe6[M] 8. Nf4xe6! Kb6-b5 9. c6-c7 Kb5-c4 10. c7-c8=Q Kc4-d3 11. Kd6-c5 Kd3-e2 12. Qc8-f8 Ke2-d1 13. Ne6-d4 Kd1-c1 14. Qf8-f2 Kc1-b1 15. Qf2-c2! Kb1-a1! 16. Nd4-b3
= (MAT15) Depth: 25/62 00:15:21.14 479749kN (521 KN/s, 493909 splits, 8739 aborts)
1... Kc2-b2 2. Kc4-d4 Kb2-b3 3. c3-c4! Kb3-b4 4. c4-c5 Kb4-b5 5. Kd4-d5! Kb5-a6 6. c5-c6! Ka6-b6 7. Kd5-d6! Qh6xe6[M] 8. Nf4xe6! Kb6-b5 9. c6-c7 Kb5-c4 10. c7-c8=Q Kc4-d3 11. Kd6-c5 Kd3-e2 12. Qc8-f8 Ke2-d1 13. Ne6-d4 Kd1-c1 14. Qf8-f2 Kc1-b1 15. Qf2-c2! Kb1-a1! 16. Nd4-b3
= (MAT15) Depth: 25/62 00:15:21.14 479749kN (521 KN/s, 493909 splits, 8739 aborts)
Count: Time: 996.688s, Nodes: 522267416 Qnodes: 274205980[52.5%][27.8%], NPS: 524K
Hash: TProbes: 505310140[96.8%] TPings: 415187621[82.2%] THits: 189673866[37.5%] TUsed: 55638212[91.5%]
EHash: KHits 141397285[98.5%] PHits 2200901[99.7%] POverall: 143598186[100.0%]
Exts: Check: 34581448 Singular: 192827 Mate: 1286207 One-rep: 0 IID: 0[0.0%]
TB: Probes: 162678 Hits: 88389[54.3%]
Idle: CPU0: 4.650 CPU1: 4.448
Black: used 0.000 seconds, now 0.000 remainingThat is a great problem! Congratulations to the authors. The pattern of the pair of knights trapping valuable opponent pieces is almost the same to a position I posted a while ago:
½-½ or 0-1?
Thanks to Vincent Lejeune's tip of 'Behting' I have just found it at Chess.com with the priceless help of Google; at first glance it says 1908 instead of 1906, but is corrected in the sixth post, so Vincent was right. CPW could not miss this study.
Regards from Spain.
Ajedrecista.