Any engines good at solving puzzles like this?

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MOBMAT
Posts: 385
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Re: Any engines good at solving puzzles like this?

Post by MOBMAT »

peter wrote: ↑Tue May 05, 2020 10:09 pm
zullil wrote: ↑Tue May 05, 2020 6:55 pm Is this minimal?

info depth 84 seldepth 50 multipv 1 score mate 24 nodes 289719208643 nps 67569683 hashfull 999 tbhits 0 time 4287710 pv h8f7 d3c4 f7d6 c4d5 d6b7 d5c6 b7a5 c6b5 a5b3 b5b4 a1b2 a7a6 b3d4 b4c4 d4c2 a6a5 c2a3 c4b4 b2c2 b4c5 c2d3 c5d5 a3c4 a5a4 c4b6 d5c6 b6a4 c6d5 a4c3 d5e5 d3c4 e5e6 c3d5 e6f5 c4d4 f5g4 d4e5 g4g5 e5e6 g5g6 d1c2 g6g7 d5e7 g7h8 c2g6 d2d1r g6g8
Guess yes.

http://talkchess.com/forum3/viewtopic.p ... 13#p842513

After some Forward- Backward:

7N/pp6/8/8/8/3kpppp/3prqrp/K2Qbbnn w - - 0 1

Analysis by Eman 5.40 64-bit POPCNT:

1.Nf7 b6 2.Nd6 a6 3.Ka2 Kd4 4.Kb3 Kd5 5.Nc4 b5 6.Na5 Kc5 7.Kc3 Kd5 8.Nb3 Ke5 9.Kb4 Kd5 10.Nc5 Kd6 11.Nxa6 Kc6 12.Ka5 b4 13.Kxb4 Kd5 14.Kb5 Ke5 15.Kc5 Kf6 16.Kd6 Kf5 17.Nb4 Kf6 18.Nd5+ Kf7 19.Ne7 Kf6 20.Qa1+ Kf7 21.Qa2+ Kf6 22.Qe6+ Kg5 23.Qg6+ Kf4 24.Nd5#
+- (#24) Depth: 66/48 00:01:18 2439MN
Is Eman 5.40 available? I don't see it on CCRL or on wiki engine list.
i7-6700K @ 4.00Ghz 32Gb, Win 10 Home, EGTBs on PCI SSD
Benchmark: Stockfish15.1 NNUE x64 bmi2 (nps): 1277K
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peter
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Re: Any engines good at solving puzzles like this?

Post by peter »

MOBMAT wrote: ↑Wed May 06, 2020 12:07 am Is Eman 5.40 available? I don't see it on CCRL or on wiki engine list.
Eman isn't publicly available.
Peter.
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zullil
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Re: Any engines good at solving puzzles like this?

Post by zullil »

peter wrote: ↑Wed May 06, 2020 12:24 am
MOBMAT wrote: ↑Wed May 06, 2020 12:07 am Is Eman 5.40 available? I don't see it on CCRL or on wiki engine list.
Eman isn't publicly available.
Hi Peter,

Since this engine is a modification of Stockfish, if you received the binary from the author you are entitled to the source code. Or so I believe, based on the Stockfish GPL.

Have you requested the source code?

Louis
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Dann Corbit
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Re: Any engines good at solving puzzles like this?

Post by Dann Corbit »

It's a rogue project, he does not publish the source code.
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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zullil
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Full name: Louis Zulli

Re: Any engines good at solving puzzles like this?

Post by zullil »

Dann Corbit wrote: ↑Wed May 06, 2020 1:21 am It's a rogue project, he does not publish the source code.
The author is not required to "publish" the source code. But is he not legally obligated to make it available (upon request) to anyone who has been given a binary produced from the source code?
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peter
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Full name: Peter Martan

Re: Any engines good at solving puzzles like this?

Post by peter »

zullil wrote: ↑Wed May 06, 2020 1:18 am
peter wrote: ↑Wed May 06, 2020 12:24 am
MOBMAT wrote: ↑Wed May 06, 2020 12:07 am Is Eman 5.40 available? I don't see it on CCRL or on wiki engine list.
Eman isn't publicly available.
Hi Peter,

Since this engine is a modification of Stockfish, if you received the binary from the author you are entitled to the source code. Or so I believe, based on the Stockfish GPL.

Have you requested the source code?

Louis
Hi Louis,
you're right about the Stockfish- licence, only those, who got the engine from the author, may request the code, but I didn't do so.
Peter.
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Dann Corbit
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Re: Any engines good at solving puzzles like this?

Post by Dann Corbit »

He has given out plenty of engines, so who exactly has he published the source code to?

Even though the engine is strong I have not requested it and have no interest in 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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Alayan
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Full name: Alayan Feh

Re: Any engines good at solving puzzles like this?

Post by Alayan »

zullil wrote: ↑Wed May 06, 2020 1:28 am
Dann Corbit wrote: ↑Wed May 06, 2020 1:21 am It's a rogue project, he does not publish the source code.
The author is not required to "publish" the source code. But is he not legally obligated to make it available (upon request) to anyone who has been given a binary produced from the source code?
According to GPL, he is.

If he refuses upon request from someone he gave the binary to (as i'd expect him to), he's violating the copryight of Stockfish authors.
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Nay Lin Tun
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Re: Any engines good at solving puzzles like this?

Post by Nay Lin Tun »

Pafifi wrote: ↑Tue May 05, 2020 12:27 pm [d]7N/pp6/8/8/8/3kpppp/3prqrp/K2Qbbnn w - - 0 1
White to win
None of Stockfish, Sting SF, and Crystal can solve in 10min on my machine.
It is good to know that none of the top engines waste time in searching such garbage positions.

Finding the best move in chess is like searching the gold. If you dont filter ( pruning in engine term), you are less likely to find the gold and find more garbage.
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Pafifi
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Full name: Rong Lin

Re: Any engines good at solving puzzles like this?

Post by Pafifi »

Dann Corbit wrote: ↑Tue May 05, 2020 10:18 pm Current code seems to solve it fairly quickly, even without altering the null move status.

FEN: [d]7N/pp6/8/8/8/3kpppp/3prqrp/K2Qbbnn w - - 0 1

Code: Select all

Stockfish-x64-mingw:
Found 746 tablebases
 2/2	00:00	 324k	24,921k	-33.71	Nf7 Ke4
 3/4	00:00	 543k	33,958k	-32.97	Nf7 Ke4 Nd6+ Kf4
 4/6	00:00	 763k	40,149k	-34.62	Ng6 Kd4 Qa4+ Kd5 Nf4+ Kd6 Nxe2 Nxe2
 5/7	00:00	 1,088k	45,327k	-34.62	Ng6 Kd4 Qa4+ Kd5 Nf4+ Kd6 Nxe2 Nxe2
 6/8	00:00	 1,433k	49,427k	-33.26	Nf7 b5 Kb2 b4 Ne5+ Ke4
 7/8	00:00	 1,672k	50,660k	-33.03	Nf7 b5 Ne5+ Ke4 Nc6 a6 Kb1
 8/14	00:00	 1,891k	52,536k	-29.07	Ng6 Kd4 Qa4+ Kd5 Nf4+ Kd6
 9/17	00:00	 2,167k	54,185k	-33.97	Ng6 Kd4 Qa4+ Kc5 Qxa7+ Kd6 Qb6+ Kd7 Qxb7+ Ke6 Nf8+ Kd6 Qd7+ Kc5 Kb1 Kb6
 10/18	00:00	 2,410k	56,047k	-32.06	Nf7 b5 Ne5+ Ke4 Nc6 a5 Nxa5
 11/16	00:00	 2,665k	56,693k	-29.30	Nf7 b5 Nh6 Kc3 Ng4 a5 Kb1 Kb4 Ka1 a4 Kb2
 12/19	00:00	 2,942k	57,679k	-32.07	Nf7 b5 Nh6 Kc3 Ka2 b4 Ng4 a5 Qb3+ Kd4 Qd1 a4 Nxf2
 13/21	00:00	 3,263k	58,266k	-29.20	Nf7 b5 Nh6 Kc3 Ka2 Kb4 Ng4 Ka5 Ka1 Ka6 Ka2
 14/27	00:00	 4,583k	61,109k	-33.11	Ng6 a5 Ne5+ Kd4 Ng4 Kc5 Ka2 Kd6 Kb1 b5 Qb3 d1Q+ Qxd1+ Kc5 Nxf2 Nxf2
 15/22	00:00	 5,530k	62,839k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Ke7 Qc7+ Ke6 Qc6+ Kf5 Qd5+ Kf6
 16/24	00:00	 5,928k	64,430k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Ke7 Qc7+ Ke6 Qf7+ Ke5 Qe7+ Kf5 Qf7+
 17/28	00:00	 6,238k	64,982k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Kc6 Qa8+ Kb6 Qb8+ Ka6 Qd6+ Kb5 Qd7+ Kb6 Qd6+ Kb7
 18/28	00:00	 6,549k	65,489k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Ke7 Qc7+ Kf6 Qf7+ Ke5 Qc7+ Kd5 Qd8+ Kc5 Qc7+ Kb4 Qb7+ Kc4
 19/27	00:00	 6,846k	66,462k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Ke7 Qc7+ Kf6 Qf7+ Ke5 Qc7+
 20/30	00:00	 7,141k	66,735k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Ke7 Qc7+ Kf6 Qf7+ Ke5 Qc7+ Kd5 Qd8+ Ke6 Qc8+ Kd6 Qf8+ Kd7 Qf7+ Kc6
 21/27	00:00	 7,448k	67,098k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Ke6 Qc6+ Ke7 Qb7+ Kf6 Qf7+ Ke5 Qc7+ Kd5 Qd8+ Ke6 Qb6+ Kf5 Qb5+ Kf4
 22/27	00:00	 7,731k	67,816k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+
 23/30	00:00	 8,020k	67,969k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+ Kf5 Qb5+ Kf6 Qb6+
 24/21	00:00	 8,318k	68,742k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+
 25/21	00:00	 8,637k	69,096k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+
 26/31	00:00	 9,024k	69,951k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+ Ke5
 27/20	00:00	 9,570k	70,891k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+
 28/21	00:00	 10,015k	71,535k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+
 29/34	00:00	 10,404k	72,252k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Ke7 Qc7+ Ke6 Qb6+ Kf5 Qb5+ Kg4 Qd7+ Kg5 Qg7+ Kf4 Qc7+ Ke4 Qc6+ Kd4 Qb6+ Kc4 Qc6+ Kb4
 30/28	00:00	 10,898k	72,651k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+ Kf5 Qb5+ Kf6 Qa6+ Kg5 Qa5+ Kh6 Qa6+
 31/37	00:00	 11,253k	73,549k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+ Kf5 Qb5+ Kf6 Qa6+ Kg5 Qa5+ Kh6 Qa6+ Kh7 Qg6+ Kxh8 Qh6+ Kg8 Qg6+ Kf8 Qf6+ Ke8 Qe6+ Kd8 Qd6+ Kc8
 32/21	00:00	 11,612k	73,965k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+
 33/32	00:00	 12,018k	74,182k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+ Kf5 Qb5+ Kf6 Qa6+ Kg7 Qg6+ Kxh8 Qh6+ Kg8 Qg6+
 34/33	00:00	 12,464k	75,083k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+ Kf5 Qb5+ Kf6 Qa6+ Kg7 Qg6+ Kxh8 Qh6+ Kg8 Qg6+ Kf8 Qf6+ Kg8
 35/23	00:00	 12,837k	75,073k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+
 36/21	00:00	 13,225k	75,144k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+
 37/21	00:00	 13,829k	75,567k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+
 38/31	00:00	 14,947k	76,653k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+ Kf5 Qb5+ Kf6 Qa6+ Kg7 Qg6+ Kxh8 Qh6+ Kg8 Qg6+
 39/35	00:00	 15,691k	77,297k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+ Kf5 Qb5+ Kf6 Qa6+ Kg5 Qa5+ Kf4 Qc7+ Ke4 Qc6+ Kd4 Qd7+ Ke5 Qb5+ Kf6
 40/21	00:00	 16,450k	78,331k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+
 41/35	00:00	 17,286k	78,934k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+ Kf5 Qb5+ Kf6 Qa6+ Kg5 Qa5+ Kf4 Qc7+ Ke4 Qc6+ Kd4 Qd7+ Ke5 Qb5+ Kf6
 42/21	00:00	 17,989k	79,599k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+
 43/21	00:00	 18,673k	80,144k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+
 44/39	00:00	 19,399k	80,828k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+ Kf5 Qb5+ Kf6 Qa6+ Kg5 Qa5+ Kf4 Qc7+ Kf5 Qf7+ Ke4 Qe7+ Kd4 Qd7+ Kc5 Qc7+ Kb5 Qd7+
 45/21	00:00	 24,745k	82,758k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+
 46/20	00:00	 27,385k	83,746k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Qd8+ Ke6 Qb6+
 47/28	00:00	 28,504k	84,082k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qa6+ Kc5 Qc8+ Kd4 Qd7+ Ke5 Qc7+ Ke4 Qe7+ Kd3 Qd7+ Kc3
 48/29	00:00	 36,818k	86,836k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qa6+ Kc5 Qc8+ Kd4 Qd7+ Ke5 Qc7+ Ke4 Qc6+ Kf4 Qf6+ Kg4 Qe6+ Kf4
 49/21	00:00	 40,090k	88,304k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qa6+ Kc5 Qc8+ Kd4 Qd7+ Kc5
 50/40	00:00	 50,167k	90,392k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qa6+ Kc5 Qc8+ Kd4 Qd7+ Ke5 Qc7+ Kf5 Qc5+ Ke6 Qb6+ Ke7 Ng6+ Kd7 Qb7+ Kd6 Qb6+ Kd5 Ne7+ Ke5 Ng6+
 51/26	00:00	 52,273k	90,751k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qa6+ Kc5 Qc8+ Kb5 Qb7+ Kc4 Qc6+ Kd4 Qd7+ Kc3 Qc6+
 52/33	00:00	 53,672k	90,815k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qa6+ Kc5 Qc8+ Kb6 Qb8+ Ka5 Qc7+ Kb5 Qb7+ Kc4 Qc6+ Kd4 Qd7+ Ke5 Qc7+ Kd5 Qd7+ Kc5
 53/23	00:00	 61,087k	91,447k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qa6+ Kc5 Qc8+ Kd4 Qd7+ Kc4 Qc6+ Kd4
 54/37	00:00	 77,391k	93,018k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qa6+ Kc5 Qc8+ Kd4 Qd7+ Kc3 Qc7+ Kb3 Qb7+ Ka3 Qe7+ Ka4 Qd7+ Kb4 Qd4+ Ka5 Qc5+ Ka6 Qc6+ Ka7 Qc5+
 55/43	00:01	 95,368k	93,682k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qa6+ Kc5 Qc8+ Kb4 Qb8+ Ka4 Qa8+ Kb3 Qb7+ Kc3 Qc7+ Kd4 Qd7+ Ke5 Ng6+ Kf6 Qe7+ Kf5 Nh4+ Kf4 Qb4+ Kg5 Qe7+ Kh5 Qh7+ Kg4 Qe4+ Kh5
 56/22	00:01	 98,748k	93,867k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qa6+ Kc5 Qc8+ Kb6 Qb8+ Ka6 Qc8+
 57/17	00:01	 101,619k	94,266k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qa6+ Kd7
 58/23	00:01	 145,025k	97,071k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qa6+ Kc5 Qc8+ Kb6 Qb8+ Ka6 Qc8+
 59/26	00:01	 147,496k	97,229k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qa6+ Kc5 Qc8+ Kb5 Qd7+ Kb6 Qd6+ Kb7 Qd7+ Ka6
 60/33	00:01	 151,907k	97,690k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qa6+ Kc5 Qc8+ Kd4 Qd7+ Kc3 Qc7+ Kb3 Qb6+ Ka4 Qa6+ Kb3
 61/25	00:01	 154,683k	97,900k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qa6+ Kc5 Qc8+ Kb5 Qd7+ Kb6 Qd6+ Kb7 Qd7+
 62/18	00:01	 189,141k	100,875k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qa6+ Kc7
 63/29	00:02	 231,370k	102,648k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qa6+ Kc5 Qc8+ Kb5 Qd7+ Kc4 Qa4+ Kc5 Qa7+
 64/21	00:02	 313,071k	106,054k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Qa6+ Ke5 Qa5+ Ke6 Qa6+
 65/27	00:03	 351,552k	106,952k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Nf7+ Kc5 Qc7+ Kb4 Qb6+ Kc4 Qc7+ Kb3 Qb7+ Kc3 Qc6+ Kb4
 66/23	00:03	 386,002k	107,581k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Kd6 Nf7+ Kc5 Qc7+ Kb4 Qb6+ Kc4 Qc7+
 67/29	00:04	 510,172k	110,260k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kd6 Qa6+ Kc7 Qxa7+ Kc8 Qa8+ Kd7 Qb7+ Ke6 Qc6+ Ke5 Ng6+ Kd4 Qa4+ Kd5 Qb5+ Ke4 Qe5+ Kd3 Qb5+ Kc3 Qa5+ Kd3
 68/17	00:23	 2,396,559k	103,340k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kc4 Qc6+ Kb4 Qe4+ Ka5 Qd5+ Kb6 Qd6+ Kb5 Qd5+ Kb4
 69/22	00:23	 2,397,860k	103,334k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kc4 Qc6+ Kb4 Qe4+ Kc5 Qe7+ Kc4 Qc7+
 70/27	00:23	 2,405,896k	103,311k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kc4 Qc6+ Kb4 Qe4+ Kc5 Qe7+ Kc4 Qc7+ Kb3 Qb7+ Ka4 Qa6+ Kb4 Qb7+ Ka5 Qd5+ Kb6 Qd6+ Kb5 Qd5+ Kb6
 71/15	00:26	 2,768,539k	102,866k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kc4 Qc6+ Kb4 Qe4+ Kc5 Qe7+ Kc4 Qc7+
 72/29	00:26	 2,776,185k	102,860k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kc4 Qc6+ Kb4 Qe4+ Kc5 Qe7+ Kc4 Qc7+ Kb3 Qb7+ Ka4 Qa6+ Kb4 Qb7+
 73/29	00:27	 2,780,135k	102,858k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kc4 Qc6+ Kb4 Qe4+ Kc5 Qe7+ Kc4 Qc7+
 74/29	00:27	 2,781,956k	102,856k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kc4 Qc6+ Kb4 Qe4+ Kc5 Qe7+ Kc4 Qc7+
 75/20	00:28	 2,970,648k	102,919k	 0.00	Qb3+ Kd4 Qb4+ Kd5 Qxb7+ Kc4 Qc6+ Kb4 Qe4+ Kc5 Qe7+ Kc4 Qc7+
 76/34+	01:42	 11,149,144k	109,176k	+0.09	Nf7
 76/34+	01:42	 11,205,506k	109,117k	+24.52	Nf7
 76/71+	02:04	 13,370,278k	107,262k	+149.07	Nf7
 76/71	03:32	 22,916,725k	107,936k	+M25	Nf7 Kd4 Nd6 Kc5 Nxb7+ Kc6 Na5+ Kb5 Nb3 a6 Kb2 Kb4 Nd4 Kc4 Nc2 a5 Na3+ Kd4 Kb3 Kc5 Ka4 Kc6 Kxa5 Kc5 Nc2 Kc6 Kb4 Kd6 Kc4 Ke6 Nb4 Kf6 Kc5 Kf5 Nd5 Kg6 Kd6 Kf7 Ne7 Kf6 Qa1+ Kf7 Qa2+ Kf6 Qe6+ Kg7 Qg6+ Kh8 Qh6+
A 70+ depth is not that "quick" on my poor laptop :( . If only I have such a strong machine for a brutal search!
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