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3-rep. draw apparently stops analysis of other moves #679

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rwst opened this issue May 27, 2016 · 14 comments
Closed

3-rep. draw apparently stops analysis of other moves #679

rwst opened this issue May 27, 2016 · 14 comments

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@rwst
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rwst commented May 27, 2016

In this 15min/0 game SF commit 5972c4a wins against github master,
while master with Black can't see the win, even when backtracked
to before 17.Kd2. Does a 3-move rep. draw completely stop the engine
from fully analyzing the position?

[Event "My Tournament"]
[Site "?"]
[Date "2016.05.27"]
[Round "5"]
[White "Stockfish 4 threads"]
[Black "Stockfish-5972c4a 4 threads"]
[Result "0-1"]
[ECO "C39"]
[Opening "KGA"]
[PlyCount "186"]
[TimeControl "900"]
[Variation "Kieseritsky, Kolisch defense"]

1.e4 
    {book}
1...e5 
    {book}
2.f4 
    {book}
2...exf4 
    {book}
3.Nf3 
    {book}
3...g5 
    {book}
4.h4 
    {book}
4...g4 
    {book}
5.Ne5 
    {book}
5...d6 
    {book}
6.Nxg4 
    {book}
6...Nf6 
    {book}
7.Nxf6+ 
    {book}
7...Qxf6 
    {book}
8.Nc3 
    {book}
8...Nc6 
    {book}
9.Nd5 
    {0.00/29 30s}
9...Qg6 
    {0.00/27 11s}
10.d3 
    {0.00/29 19s}
10...Qg3+ 
    {0.00/27 3.2s}
11.Kd2 
    {0.00/30 11s}
11...Nb4 
    {0.00/29 11s}
12.Nxc7+ 
    {0.00/31 18s}
12...Kd8 
    {0.00/31 3.7s}
13.Nxa8 
    {0.00/33 5.7s}
13...Qe3+ 
    {0.00/33 12s}
14.Kc3 
    {0.00/1 0s}
14...Qc5+ 
    {0.00/33 5.8s}
15.Kd2 
    {0.00/37 23s}
15...Qe3+ 
    {0.00/35 13s}
16.Kc3 
    {0.00/1 0s}
16...Qc5+ 
    {0.00/37 16s}
17.Kd2 
    {0.00/47 20s}
17...Rg8 
    {+0.13/35 134s}
18.a3 
    {-1.74/27 48s}
18...Bh6 
    {+2.11/27 16s}
19.d4 
    {-1.10/27 9.7s}
19...f3+ 
    {+2.37/25 3.5s}
etc.

versus

[Event "My Tournament"]
[Site "?"]
[Date "2016.05.27"]
[Round "5"]
[White "Stockfish-5972c4a 4 threads"]
[Black "Stockfish 4 threads"]
[Result "1/2-1/2"]
[ECO "C39"]
[Opening "KGA"]
[PlyCount "34"]
[TimeControl "900"]
[Variation "Kieseritsky, Kolisch defense"]

1.e4 
    {book}
1...e5 
    {book}
2.f4 
    {book}
2...exf4 
    {book}
3.Nf3 
    {book}
3...g5 
    {book}
4.h4 
    {book}
4...g4 
    {book}
5.Ne5 
    {book}
5...d6 
    {book}
6.Nxg4 
    {book}
6...Nf6 
    {book}
7.Nxf6+ 
    {book}
7...Qxf6 
    {book}
8.Nc3 
    {book}
8...Nc6 
    {book}
9.Nd5 
    {0.00/27 14s}
9...Qg7 
    {0.00/30 32s}
10.d3 
    {0.00/29 18s}
10...Qg3+ 
    {0.00/31 24s}
11.Kd2 
    {0.00/30 4.2s}
11...Nb4 
    {0.00/31 5.5s}
12.Nxc7+ 
    {0.00/31 14s}
12...Kd8 
    {0.00/35 26s}
13.Nxa8 
    {0.00/33 7.7s}
13...Qe3+ 
    {0.00/33 3.1s}
14.Kc3 
    {0.00/1 0s}
14...Qc5+ 
    {0.00/36 18s}
15.Kd2 
    {0.00/36 18s}
15...Qe3+ 
    {0.00/35 18s}
16.Kc3 
    {0.00/1 0s}
16...Qc5+ 
    {0.00/41 13s}
17.Kd2 
    {0.00/43 12s}
17...Qe3+ 
    {0.00/36 32s, Draw by 3-fold repetition}
1/2-1/2

Position after 17.Kd2: N1bk1b1r/pp3p1p/3p4/2q5/1n2Pp1P/3P4/PPPK2P1/R1BQ1B1R b - - 8 17
@anshulongithub
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Can someone please take a look and analyze the problem here and also is this in any way related to why SF drew its game in just 21 moves against Nirvana? Developers please advise.

@Rocky640
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Rocky640 commented Jun 3, 2016 •
edited

@rwst What was the hash size that was used in your 2 games ?

I have not looked at the Nirvana game.

However the issue raised by @rwst is quite interesting
Here is my pre-analysis, if it can help someone else.

A) In his position
N1bk1b1r/pp3p1p/3p4/2q5/1n2Pp1P/3P4/PPPK2P1/R1BQ1B1R b - - 8 17

Black is currently down a full rook and a pawn,
but White is under developed, with a trapped Na8 and White King is on d2.

Black can safely go for a perpetual draw with 17...Qe3+, or 17...Bg7.
After these moves, if White tries to avoid the perpetual, White will be worse.

But there is a 3rd move, 17...Rg8 !! which first looks like a looser, than will show some perpetuals score and which finally will appear as a winner against any of White defense in this extremely imbalanced position.

@rwst says that in his first 15min/0 game, SF7 (from 5972c4a) was able to find this 17...Rg8 move (with 4 threads, in 134s)

Using that same 2016-Jan SF7, my slow 4 core machine can find
17...Rg8 !! after 9 minutes. (39/43+)

If I use the 2016-Apr-12 version (the one just before the #631 version)
it can find Rg8 after 15:02 minutes (41/53+)

However, with a recent master (Pins or discovered attacks on the opponent's queen),
my machine did not find 17...Rg8 after 22 minutes

So possibly the problem is again from that #631.
Can someone with a 4 core machine or better try the following commands with this version #631 ?

setoption name Threads value 4
position fen N1bk1b1r/pp3p1p/3p4/2q5/1n2Pp1P/3P4/PPPK2P1/R1BQ1B1R b - - 8 17
go infinite

and see if 17...Rg8 is found in reasonable time ?

B) In the second 15min/0 game, we see that master SF takes only 18s to decide for 17...Qe3 +
(a perpetual which White can avoid but which would leave him with a negative score).

Here it seems that we have some areas of improvement.
If SF has plenty of time left, and apparently the best move is a sure perpetual,
which can finish the game in the next 3 or 4 moves,
maybe it should spend more time, and see if it can find something better,
and possibly switch to Multi-PV mode.

In worst case SF can secure the draw, and in the best case, it would give it an opportunity to find a brilliant win.

The same is true when opponent has a perpetual.
SF might see this, and not worry...but maybe opponent has something else, better.

D) What is sad is that as soon as one manually force the 17...Rg8!! move
it takes less than 10 seconds to see the eval raising.

@rwst
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Author

rwst commented Jun 4, 2016

The size of hash for both was set to 1024. The machine also is fast, a
i7-6700, I get 2.7 Mnps on fishtest.

On Fri, Jun 3, 2016, 21:18 Rocky640 notifications@github.com wrote:

@rwst https://github.com/rwst What was the hash size that was used in
your 2 games ?

I have not looked at the Nirvana game.

However the issue raised by @rwst https://github.com/rwst is quite
interesting
Here is my pre-analysis, if it can help someone else.

A) In his position
N1bk1b1r/pp3p1p/3p4/2q5/1n2Pp1P/3P4/PPPK2P1/R1BQ1B1R b - - 8 17

Black is currently down a full rook and a pawn,
but White is under developed, with a trapped Na8 and White King is on d2.

Black can safely go for a perpetual draw with 17...Qe3+, or 17...Bg7.
After these moves, if White tries to avoid the perpetual, White will be
worse.

But there is a 3rd move, 17...Rg8 !! which first looks like a looser, than
will show some perpetuals score and which finally will appear as a winner
against any of White defense in this extremely imbalanced position.

@rwst https://github.com/rwst says that in his first 15min/0 game, SF7
(from 5972c4a
5972c4a)
was able to find this 17...Rg8 move (with 4 threads, in 134s)

Using that same 2016-Jan SF7, my slow 4 core machine can find
17...Rg8 !! after 9 minutes. (39/43+)

If I use the 2016-Apr-12 version (the one just before the #631
#631 version)
it can find Rg8 after 15:02 minutes (41/53+)

However, with a recent master (Pins or discovered attacks on the
opponent's queen),
my machine did not find 17...Rg8 after 22 minutes

So possibly the problem is again from that #631
#631.
Can someone with a 4 core machine or better try the following commands
with this version #631
#631 ?

setoption name Threads value 4
position fen N1bk1b1r/pp3p1p/3p4/2q5/1n2Pp1P/3P4/PPPK2P1/R1BQ1B1R b - - 8 17
go infinite

and see if 17...Rg8 is found in reasonable time ?

B) In the second 15min/0 game, we see that master SF takes only 18s to
decide for 17...Qe3 +
(a perpetual which White can avoid but which would leave him with a
negative score).

Here it seems that we have some areas of improvement.
If SF has plenty of time left, and apparently the best move is a sure
perpetual,
which can finish the game in the next 3 or 4 moves,
maybe it should spend more time, and see if it can find something better,
and possibly switch to Multi-PV mode.

In worst case SF can secure the draw, and in the best case, it would give
it an opportunity to find a brilliant win.

The same is true when opponent has a perpetual.
SF might see this, and not worry...but maybe opponent has something else,
better.

D) What is sad is that as soon as one manually force the 17...Rg8!! move
it takes less than 10 seconds to see the eval raising.

C) A third possible explanation, is that here we have the first 2 lines
which are sure perpetuals for Black, and the material score is -6 to start
with.

—
You are receiving this because you were mentioned.

Reply to this email directly, view it on GitHub
#679 (comment),
or mute the thread
https://github.com/notifications/unsubscribe/ABF_VQAt6D_cElMZWYzEL0AuJSI9YWKEks5qIH4LgaJpZM4IoftJ
.

@Rocky640
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Rocky640 commented Jun 4, 2016

Thanks, @rwst
Can you please try on your machine

A) # 623
http://abrok.eu/stockfish/builds/ee7a68ea5fc07e331df462b10f35dc770e9409c5/win64modern/stockfish_16041611_x64_modern.exe

setoption name Threads value 4
position fen N1bk1b1r/pp3p1p/3p4/2q5/1n2Pp1P/3P4/PPPK2P1/R1BQ1B1R b - - 8 17
go infinite

and tell us how much time it takes to find Rg8

B) Same question with # 646
http://abrok.eu/stockfish/builds/c73706243672bf36b0fef58e817f843cb341d8ca/win64modern/stockfish_16042303_x64_modern.exe

setoption name Threads value 4
position fen N1bk1b1r/pp3p1p/3p4/2q5/1n2Pp1P/3P4/PPPK2P1/R1BQ1B1R b - - 8 17
go infinite

(Maybe it will not be able to find it...this is what I want to verify !)
At least this will confirm if indeed there is a problem

mcostalba added a commit to mcostalba/Stockfish that referenced this issue Jun 4, 2016
@mcostalba
Filter root moves filter before copy to threads
2ec5a18 
Currently root moves are copied to all teh threads
but are DTZ filtered only in main thread at the
beginning of teh search.

This patch moves the TB filtering before the
copy of root moves fixing issue #679

official-stockfish/Stockfish#679

No bench change.
@mcostalba mcostalba mentioned this issue Jun 4, 2016
Merged
@lp--
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lp-- commented Jun 5, 2016

For fun tried a version of switching into multipv mode when draw is detected. For simplicity did not extract type of draw for which to switch. Also did not bother much thinking what will happen for smp.
https://github.com/lp--/Stockfish/tree/manyPV

For one 1 core, which must be repeatable:

ucinewgame
position fen N1bk1b1r/pp3p1p/3p4/2q5/1n2Pp1P/3P4/PPPK2P1/R1BQ1B1R b - - 8 17
go wtime 10000000  btime 10000000


info depth 1 seldepth 1 multipv 1 manypv 0 score cp 84 nodes 71 nps 23666 tbhits 0 time 3 pv f8g7
info depth 2 seldepth 2 multipv 1 manypv 0 score cp 146 nodes 307 nps 76750 tbhits 0 time 4 pv d6d5 e4d5
info depth 3 seldepth 3 multipv 1 manypv 0 score cp 146 nodes 512 nps 128000 tbhits 0 time 4 pv d6d5 e4d5 b4d5
info depth 4 seldepth 6 multipv 1 manypv 0 score cp 148 nodes 3652 nps 280923 tbhits 0 time 13 pv f8h6 a2a4 f4f3 d2e1 b4c2 d1c2 c5c2
info depth 5 seldepth 7 multipv 1 manypv 0 score cp -65 nodes 6301 nps 331631 tbhits 0 time 19 pv c8e6 f1e2 f4f3 e2f3 b4a2
info depth 6 seldepth 7 multipv 1 manypv 0 score cp -98 nodes 13703 nps 442032 tbhits 0 time 31 pv c8e6 f1e2 f4f3 e2f3 f8g7 d2e1 b4c2 e1f1 c2a1
info depth 7 seldepth 10 multipv 1 manypv 0 score cp -136 nodes 21499 nps 597194 tbhits 0 time 36 pv c8e6 f1e2 f4f3 e2f3 f8g7 a2a3 c5f2 d1e2
info depth 8 seldepth 12 multipv 1 manypv 0 score cp -118 nodes 28208 nps 705200 tbhits 0 time 40 pv c5e3 d2c3 e3c5 c3b3 b4c2 d1c2 c8e6 c2c4 e6c4 d3c4 c5c8 f1e2 c8a8
info depth 9 seldepth 16 multipv 1 manypv 0 score cp -71 nodes 31611 nps 752642 tbhits 0 time 42 pv c5e3 d2c3 e3c5 c3b3 b4c2 d1c2 c8e6 c2c4 e6c4 d3c4 c5e5 a2a3 e5e4
info depth 10 seldepth 18 multipv 1 manypv 0 score cp -62 nodes 40238 nps 856127 tbhits 0 time 47 pv c5e3 d2c3 e3c5 c3b3 b4c2 d1c2 c8e6 c2c4 e6c4 d3c4 c5c8 f1e2 c8a8 c1f4 h8g8
info depth 11 seldepth 19 multipv 1 manypv 0 score cp -44 nodes 56147 nps 985035 tbhits 0 time 57 pv c5e3 d2c3 e3c5 c3b3 b4c2 d1c2 c8e6 c2c4 e6c4 d3c4 c5c8 f1e2 c8a8 c1f4 h8g8 f4g5 d8c7
info depth 12 seldepth 21 multipv 1 manypv 0 score cp -35 nodes 85110 nps 1134800 tbhits 0 time 75 pv c5e3 d2c3 e3c5 c3b3 b4c2 d1c2 c8e6 c2c4 e6c4 d3c4 c5c8 c1f4 h8g8 f1d3 c8a8 g2g3 d8c7
info depth 13 seldepth 23 multipv 1 manypv 0 score cp -22 nodes 146728 nps 1298477 tbhits 0 time 113 pv c5e3 d2c3 e3c5 c3b3 b4c2 d1c2 c8e6 c2c4 e6c4 d3c4 c5c8 c1f4 c8a8 a1d1 d8c7 g2g3 a8e8 f1d3 f8e7
info depth 14 seldepth 26 multipv 1 manypv 0 score cp 0 nodes 233762 nps 1399772 tbhits 0 time 167 pv c5e3 d2c3 e3c5 c3d2
info depth 16 seldepth 29 multipv 1 manypv 0 score cp 0 nodes 2089797 nps 1534359 hashfull 805 tbhits 0 time 1362 pv c5e3 d2c3 e3c5 c3d2
info depth 17 seldepth 32 multipv 1 manypv 3 score cp 0 nodes 4788150 nps 1555604 hashfull 993 tbhits 0 time 3078 pv c5e3 d2c3 e3c5 c3d2
info depth 17 seldepth 32 multipv 1 manypv 3 score cp 0 nodes 4904974 nps 1553681 hashfull 993 tbhits 0 time 3157 pv c5e3 d2c3 e3c5 c3d2
info depth 17 seldepth 32 multipv 1 manypv 3 score cp 0 nodes 5113371 nps 1551857 hashfull 994 tbhits 0 time 3295 pv c5e3 d2c3 e3c5 c3d2
info depth 18 seldepth 32 multipv 1 manypv 0 score cp 0 nodes 5198317 nps 1550810 hashfull 994 tbhits 0 time 3352 pv c5e3 d2c3 e3c5 c3d2
info depth 19 seldepth 32 multipv 1 manypv 1 score cp 0 nodes 5268568 nps 1550034 hashfull 994 tbhits 0 time 3399 pv c5e3 d2c3 e3c5 c3d2
info depth 19 seldepth 36 multipv 1 manypv 2 score cp 0 nodes 6080823 nps 1554402 hashfull 998 tbhits 0 time 3912 pv c5e3 d2c3 e3c5 c3d2
info depth 19 seldepth 36 multipv 1 manypv 3 score cp 0 nodes 6268553 nps 1552390 hashfull 998 tbhits 0 time 4038 pv c5e3 d2c3 e3c5 c3d2
info depth 19 seldepth 39 multipv 1 manypv 3 score cp 0 nodes 7512946 nps 1557410 hashfull 999 tbhits 0 time 4824 pv c5e3 d2c3 e3c5 c3d2
info depth 19 seldepth 39 multipv 1 manypv 3 score cp 0 nodes 10394112 nps 1559506 hashfull 999 tbhits 0 time 6665 pv c5e3 d2c3 e3c5 c3d2
info depth 20 seldepth 39 multipv 1 manypv 0 score cp 0 nodes 10526857 nps 1559072 hashfull 999 tbhits 0 time 6752 pv c5e3 d2c3 e3c5 c3d2
info depth 21 seldepth 39 multipv 1 manypv 1 score cp 0 nodes 10678851 nps 1558046 hashfull 999 tbhits 0 time 6854 pv c5e3 d2c3 e3c5 c3d2
info depth 21 seldepth 39 multipv 1 manypv 2 score cp 0 nodes 11292476 nps 1554580 hashfull 999 tbhits 0 time 7264 pv c5e3 d2c3 e3c5 c3d2
info depth 21 seldepth 39 multipv 1 manypv 3 score cp 0 nodes 11774790 nps 1551969 hashfull 999 tbhits 0 time 7587 pv c5e3 d2c3 e3c5 c3d2
info depth 21 seldepth 40 multipv 1 manypv 3 score cp 0 nodes 20032544 nps 1552068 hashfull 999 tbhits 0 time 12907 pv c5e3 d2c3 e3c5 c3d2
info depth 21 seldepth 40 multipv 1 manypv 3 score cp 0 nodes 22313854 nps 1553240 hashfull 999 tbhits 0 time 14366 pv c5e3 d2c3 e3c5 c3d2
info depth 22 seldepth 40 multipv 1 manypv 0 score cp 0 nodes 22665039 nps 1552931 hashfull 999 tbhits 0 time 14595 pv c5e3 d2c3 e3c5 c3d2
info depth 23 seldepth 40 multipv 1 manypv 1 score cp 0 nodes 22809326 nps 1552711 hashfull 999 tbhits 0 time 14690 pv c5e3 d2c3 e3c5 c3d2
info depth 23 seldepth 40 multipv 1 manypv 2 score cp 0 nodes 23722196 nps 1551180 hashfull 999 tbhits 0 time 15293 pv c5e3 d2c3 e3c5 c3d2
info depth 23 seldepth 40 multipv 1 manypv 3 score cp 0 nodes 25811209 nps 1552647 hashfull 999 tbhits 0 time 16624 pv c5e3 d2c3 e3c5 c3d2
info depth 23 seldepth 52 multipv 1 manypv 3 score cp 0 nodes 40368060 nps 1544597 hashfull 999 tbhits 0 time 26135 pv c5e3 d2c3 e3c5 c3d2
info depth 23 seldepth 52 multipv 1 manypv 3 score cp 0 nodes 49696300 nps 1553980 hashfull 999 tbhits 0 time 31980 pv c5e3 d2c3 e3c5 c3d2
info depth 24 seldepth 52 multipv 1 manypv 0 score cp 0 nodes 50577163 nps 1554641 hashfull 999 tbhits 0 time 32533 pv c5e3 d2c3 e3c5 c3d2
info depth 25 seldepth 52 multipv 1 manypv 1 score cp 0 nodes 51221183 nps 1554040 hashfull 999 tbhits 0 time 32960 pv c5e3 d2c3 e3c5 c3d2
info depth 25 seldepth 52 multipv 1 manypv 2 score cp 0 nodes 53283272 nps 1553584 hashfull 999 tbhits 0 time 34297 pv c5e3 d2c3 e3c5 c3d2
info depth 25 seldepth 52 multipv 1 manypv 3 score cp 0 nodes 55480628 nps 1551645 hashfull 999 tbhits 0 time 35756 pv c5e3 d2c3 e3c5 c3d2
info depth 25 seldepth 52 multipv 1 manypv 3 score cp 0 nodes 63766429 nps 1556189 hashfull 999 tbhits 0 time 40976 pv c5e3 d2c3 e3c5 c3d2
info depth 25 seldepth 52 multipv 1 manypv 3 score cp 0 nodes 72058216 nps 1556501 hashfull 999 tbhits 0 time 46295 pv c5e3 d2c3 e3c5 c3d2
info depth 26 seldepth 52 multipv 1 manypv 0 score cp 0 nodes 73194755 nps 1556077 hashfull 999 tbhits 0 time 47038 pv c5e3 d2c3 e3c5 c3d2
info depth 27 seldepth 52 multipv 1 manypv 1 score cp 0 nodes 73935434 nps 1555585 hashfull 999 tbhits 0 time 47529 pv c5e3 d2c3 e3c5 c3d2
info depth 27 seldepth 52 multipv 1 manypv 2 score cp 0 nodes 78890013 nps 1555003 hashfull 999 tbhits 0 time 50733 pv c5e3 d2c3 e3c5 c3d2
info depth 27 seldepth 52 multipv 1 manypv 3 score cp 0 nodes 86060106 nps 1554357 hashfull 999 tbhits 0 time 55367 pv c5e3 d2c3 e3c5 c3d2
info depth 27 seldepth 52 multipv 1 manypv 3 score cp 0 nodes 103368187 nps 1556210 hashfull 999 tbhits 0 time 66423 pv c5e3 d2c3 e3c5 c3d2
info depth 27 seldepth 52 multipv 1 manypv 3 score cp 0 nodes 116483992 nps 1556294 hashfull 999 tbhits 0 time 74847 pv c5e3 d2c3 e3c5 c3d2
info depth 28 seldepth 52 multipv 1 manypv 0 score cp 0 nodes 119663197 nps 1556756 hashfull 999 tbhits 0 time 76867 pv c5e3 d2c3 e3c5 c3d2
info depth 29 seldepth 52 multipv 1 manypv 1 score cp 0 nodes 121284403 nps 1556604 hashfull 999 tbhits 0 time 77916 pv c5e3 d2c3 e3c5 c3d2
info depth 29 seldepth 52 multipv 1 manypv 2 score cp 0 nodes 130067670 nps 1558107 hashfull 999 tbhits 0 time 83478 pv c5e3 d2c3 e3c5 c3d2
info depth 29 seldepth 64 multipv 1 manypv 3 score cp 8 nodes 147647078 nps 1563180 hashfull 999 tbhits 0 time 94453 pv h8g8 c2c4 g8g3 d2e1 c8g4 d3d4 c5c6 d1d2 c6e4 e1f2 f8g7 d2f4 b4d3 f1d3 e4g2 f2e1 g2h1 d3f1 h1h4 f4g5 g7f6 g5h4 f6h4 e1d2 d8c8 b2b3 g3f3 f1d3 c8b8 c1a3 h4g5 d2c3 g4f5 a3d6 b8a8 a1d1 f5d3 d1d3 f3f2 d6a3 f2a2
info depth 30 seldepth 64 multipv 1 manypv 0 score cp 15 lowerbound nodes 158259440 nps 1563766 hashfull 999 tbhits 0 time 101204 pv h8g8
info depth 30 seldepth 64 multipv 1 manypv 0 score cp 22 lowerbound nodes 165422538 nps 1563037 hashfull 999 tbhits 0 time 105834 pv h8g8
info depth 30 seldepth 64 multipv 1 manypv 0 score cp 32 lowerbound nodes 178761932 nps 1565231 hashfull 999 tbhits 0 time 114208 pv h8g8
info depth 30 seldepth 64 multipv 1 manypv 0 score cp 47 lowerbound nodes 189257073 nps 1564495 hashfull 999 tbhits 0 time 120970 pv h8g8
info depth 30 seldepth 64 multipv 1 manypv 0 score cp 67 lowerbound nodes 201857567 nps 1563429 hashfull 999 tbhits 0 time 129112 pv h8g8
info depth 30 seldepth 64 multipv 1 manypv 0 score cp 94 lowerbound nodes 218280492 nps 1563087 hashfull 999 tbhits 0 time 139647 pv h8g8

For many cores I guess it will depend on luck.
Try for 4:

setoption name Threads value 4
ucinewgame
position fen N1bk1b1r/pp3p1p/3p4/2q5/1n2Pp1P/3P4/PPPK2P1/R1BQ1B1R b - - 8 17
go wtime 10000000  btime 10000000

info depth 1 seldepth 1 multipv 1 manypv 0 score cp 84 nodes 687 nps 229000 tbhits 0 time 3 pv f8g7
info depth 2 seldepth 2 multipv 1 manypv 0 score cp 24 nodes 1675 nps 558333 tbhits 0 time 3 pv d8e7 a2a3
info depth 3 seldepth 4 multipv 1 manypv 0 score cp 41 nodes 3495 nps 873750 tbhits 0 time 4 pv c8e6 a2a3 b4c6
info depth 4 seldepth 6 multipv 1 manypv 0 score cp 0 nodes 7066 nps 1177666 tbhits 0 time 6 pv c8e6 a2a3 c5e3 d2c3 b4a2 a1a2 e3c5 c3d2
info depth 5 seldepth 8 multipv 1 manypv 0 score cp 0 nodes 9320 nps 1553333 tbhits 0 time 6 pv c8e6 a2a3 c5e3 d2c3 b4a2 a1a2 e3c5 c3d2 e6a2
info depth 6 seldepth 10 multipv 1 manypv 0 score cp 0 nodes 11945 nps 1706428 tbhits 0 time 7 pv c5e3 d2c3 e3c5 c3d2
info depth 7 seldepth 10 multipv 1 manypv 0 score cp 0 nodes 13449 nps 1681125 tbhits 0 time 8 pv c5e3 d2c3 e3c5 c3d2
info depth 8 seldepth 10 multipv 1 manypv 0 score cp 0 nodes 15899 nps 1766555 tbhits 0 time 9 pv c5e3 d2c3 e3c5 c3d2
info depth 10 seldepth 21 multipv 1 manypv 0 score cp 0 nodes 210289 nps 4779295 tbhits 0 time 44 pv c5e3 d2c3 e3c5 c3d2
info depth 12 seldepth 21 multipv 1 manypv 0 score cp 0 nodes 586261 nps 5428342 tbhits 0 time 108 pv c5e3 d2c3 e3c5 c3d2
info depth 14 seldepth 22 multipv 1 manypv 0 score cp 0 nodes 1377586 nps 5837228 tbhits 0 time 236 pv c5e3 d2c3 e3c5 c3d2
info depth 16 seldepth 31 multipv 1 manypv 0 score cp 0 nodes 6507909 nps 5789954 hashfull 997 tbhits 0 time 1124 pv c5e3 d2c3 e3c5 c3d2
info depth 18 seldepth 37 multipv 1 manypv 0 score cp 0 nodes 9484215 nps 5741050 hashfull 999 tbhits 0 time 1652 pv c5e3 d2c3 e3c5 c3d2
info depth 19 seldepth 37 multipv 1 manypv 3 score cp 0 nodes 17474828 nps 5638860 hashfull 999 tbhits 0 time 3099 pv c5e3 d2c3 e3c5 c3d2
info depth 19 seldepth 37 multipv 1 manypv 3 score cp 0 nodes 18601881 nps 5626703 hashfull 999 tbhits 0 time 3306 pv c5e3 d2c3 e3c5 c3d2
info depth 19 seldepth 37 multipv 1 manypv 3 score cp 0 nodes 19557544 nps 5619983 hashfull 999 tbhits 0 time 3480 pv c5e3 d2c3 e3c5 c3d2
info depth 20 seldepth 37 multipv 1 manypv 0 score cp 0 nodes 19813746 nps 5616141 hashfull 999 tbhits 0 time 3528 pv c5e3 d2c3 e3c5 c3d2
info depth 21 seldepth 37 multipv 1 manypv 1 score cp 0 nodes 20318708 nps 5611352 hashfull 999 tbhits 0 time 3621 pv c5e3 d2c3 e3c5 c3d2
info depth 21 seldepth 37 multipv 1 manypv 2 score cp 0 nodes 21189222 nps 5608581 hashfull 999 tbhits 0 time 3778 pv c5e3 d2c3 e3c5 c3d2
info depth 21 seldepth 37 multipv 1 manypv 3 score cp 0 nodes 23232156 nps 5591373 hashfull 999 tbhits 0 time 4155 pv c5e3 d2c3 e3c5 c3d2
info depth 21 seldepth 37 multipv 1 manypv 3 score cp 0 nodes 26987487 nps 5554123 hashfull 999 tbhits 0 time 4859 pv c5e3 d2c3 e3c5 c3d2
info depth 21 seldepth 43 multipv 1 manypv 3 score cp 0 nodes 42858407 nps 5498192 hashfull 999 tbhits 0 time 7795 pv c5e3 d2c3 e3c5 c3d2
info depth 22 seldepth 43 multipv 1 manypv 0 score cp 0 nodes 42910384 nps 5498511 hashfull 999 tbhits 0 time 7804 pv c5e3 d2c3 e3c5 c3d2
info depth 23 seldepth 43 multipv 1 manypv 1 score cp 0 nodes 44429885 nps 5498748 hashfull 999 tbhits 0 time 8080 pv c5e3 d2c3 e3c5 c3d2
info depth 23 seldepth 43 multipv 1 manypv 2 score cp 0 nodes 47968631 nps 5498467 hashfull 999 tbhits 0 time 8724 pv c5e3 d2c3 e3c5 c3d2
info depth 23 seldepth 43 multipv 1 manypv 3 score cp 0 nodes 55008931 nps 5475704 hashfull 999 tbhits 0 time 10046 pv c5e3 d2c3 e3c5 c3d2
info depth 23 seldepth 43 multipv 1 manypv 3 score cp 0 nodes 68316416 nps 5460944 hashfull 999 tbhits 0 time 12510 pv c5e3 d2c3 e3c5 c3d2
info depth 23 seldepth 43 multipv 1 manypv 3 score cp 0 nodes 70713357 nps 5458383 hashfull 999 tbhits 0 time 12955 pv c5e3 d2c3 e3c5 c3d2
info depth 24 seldepth 43 multipv 1 manypv 0 score cp 0 nodes 73614671 nps 5460623 hashfull 999 tbhits 0 time 13481 pv c5e3 d2c3 e3c5 c3d2
info depth 25 seldepth 43 multipv 1 manypv 1 score cp 0 nodes 75502476 nps 5463276 hashfull 999 tbhits 0 time 13820 pv c5e3 d2c3 e3c5 c3d2
info depth 25 seldepth 43 multipv 1 manypv 2 score cp 0 nodes 80380667 nps 5465098 hashfull 999 tbhits 0 time 14708 pv c5e3 d2c3 e3c5 c3d2
info depth 25 seldepth 50 multipv 1 manypv 3 score cp 119 nodes 165315111 nps 5511054 hashfull 999 tbhits 0 time 29997 pv h8g8 c2c4 g8g3 f1e2 g3g2 d1f1 g2f2 f1g1 f4f3 d2c3 f2e2 a2a3 c51 h1g1 b4c2 c1g5 d8e8 a1d1 f8g7 d3d4 f3f2 g1f1 c8h3 a8c7 e8d7 c7b5 h3f1 d1f1 c2e1 g5d2 g7f6
info depth 26 seldepth 50 multipv 1 manypv 0 score cp 112 upperbound nodes 174902195 nps 5510118 hashfull 999 tbhits 0 time 31742 pv h8g8 c2c4
info depth 26 seldepth 50 multipv 1 manypv 0 score cp 105 upperbound nodes 181238946 nps 5507276 hashfull 999 tbhits 0 time 32909 pv h8g8 c2c4
info depth 26 seldepth 50 multipv 1 manypv 0 score cp 94 upperbound nodes 187672556 nps 5509572 hashfull 999 tbhits 0 time 34063 pv h8g8 c2c4
info depth 26 seldepth 50 multipv 1 manypv 0 score cp 103 lowerbound nodes 203074085 nps 5504108 hashfull 999 tbhits 0 time 36895 pv h8g8
info depth 26 seldepth 50 multipv 1 manypv 0 score cp 98 nodes 207482541 nps 5500014 hashfull 999 tbhits 0 time 37724 pv h8g8 c2c4 g8g3 f1e2 g3g2 d1f1 g2f2 f1g1 f4f3 d2c3 f2e2 g1c5 d6c c1g5 d8d7 g5f6 f3f2 a1f1 d7c6 h1h2 e2e3 c3d2 e3d3 d2e2 c8e6 b2b3 f8h6 f6g5 h6g5 h4g5 d3d8 f1f2 d8a8
info depth 27 seldepth 50 multipv 1 manypv 0 score cp 105 lowerbound nodes 213869125 nps 5498627 hashfull 999 tbhits 0 time 38895 pv h8g8
info depth 27 seldepth 50 multipv 1 manypv 0 score cp 112 lowerbound nodes 221246422 nps 5495303 hashfull 999 tbhits 0 time 40261 pv h8g8
info depth 27 seldepth 50 multipv 1 manypv 0 score cp 123 lowerbound nodes 240531587 nps 5495854 hashfull 999 tbhits 0 time 43766 pv h8g8
info depth 27 seldepth 51 multipv 1 manypv 0 score cp 114 upperbound nodes 278289260 nps 5515921 hashfull 999 tbhits 0 time 50452 pv h8g8 c2c4
info depth 27 seldepth 51 multipv 1 manypv 0 score cp 94 upperbound nodes 290748514 nps 5517991 hashfull 999 tbhits 0 time 52691 pv h8g8 c2c4
info depth 27 seldepth 51 multipv 1 manypv 0 score cp 110 lowerbound nodes 331870466 nps 5530344 hashfull 999 tbhits 0 time 60009 pv h8g8
info depth 27 seldepth 51 multipv 1 manypv 0 score cp 129 nodes 372339141 nps 5532199 hashfull 999 tbhits 0 time 67304 pv h8g8 c2c4 g8g3 f1e2 b4d3 e2f3 d6d5 d1e2 c5c4 d2d1 d5e4 c1f4 e43 g2f3 c4f4 e2d3 f8d6 d3e4 g3f3 e4f4 f3f4 d1e2 c8g4 e2e3 f7f5 h1e1 d6e5 a1b1 f4f3 e3d2 e5f4 d2c2 f3f2 c2d3 f4d2 e1f1 g4e2 d3d2 e2f1 d2e3
info depth 28 seldepth 51 multipv 1 manypv 0 score cp 122 upperbound nodes 433888269 nps 5559177 hashfull 999 tbhits 0 time 78049 pv h8g8 a2a3
info depth 28 seldepth 54 multipv 1 manypv 0 score cp 115 upperbound nodes 461713550 nps 5583668 hashfull 999 tbhits 0 time 82690 pv h8g8 a2a3
info depth 28 seldepth 54 multipv 1 manypv 0 score cp 122 lowerbound nodes 471929802 nps 5585232 hashfull 999 tbhits 0 time 84496 pv h8g8
info depth 28 seldepth 54 multipv 1 manypv 0 score cp 137 lowerbound nodes 480346305 nps 5586916 hashfull 999 tbhits 0 time 85977 pv h8g8
info depth 28 seldepth 54 multipv 1 manypv 0 score cp 125 upperbound nodes 498492808 nps 5597897 hashfull 999 tbhits 0 time 89050 pv h8g8 a2a3
info depth 28 seldepth 54 multipv 1 manypv 0 score cp 134 nodes 504824912 nps 5598901 hashfull 999 tbhits 0 time 90165 pv h8g8 a2a3 f8h6 d3d4 f4f3 d2e1 b4c2 e1f2 c2d4 b2b4 f3g2 f1g2 c55 a1a2 c8g4 d1f1 e5e6 c1h6 e6a2 f2e3 d4c6 f1d3 d8c8 d3d2 a2a3 e3f2 c8b8 a8b6 a7b6 d2d6 b8a8 h6c1 a3c3 c1g5 c6e5 d6d2 c3a3 d2e3 a3a2 e3d2 a2a6 h1b1 g4h5 f2g1 e5f3 g2f3 h5f3 g1h2 f3e4
info depth 29 seldepth 54 multipv 1 manypv 0 score cp 127 upperbound nodes 534338655 nps 5619175 hashfull 999 tbhits 0 time 95092 pv h8g8 a2a3
info depth 29 seldepth 54 multipv 1 manypv 0 score cp 120 upperbound nodes 565362690 nps 5629644 hashfull 999 tbhits 0 time 100426 pv h8g8 a2a3
info depth 29 seldepth 54 multipv 1 manypv 0 score cp 109 upperbound nodes 584290599 nps 5640632 hashfull 999 tbhits 0 time 103586 pv h8g8 a2a3
info depth 29 seldepth 54 multipv 1 manypv 0 score cp 118 lowerbound nodes 591994248 nps 5641264 hashfull 999 tbhits 0 time 104940 pv h8g8
info depth 29 seldepth 60 multipv 1 manypv 0 score cp 128 nodes 615564222 nps 5651941 hashfull 999 tbhits 0 time 108912 pv h8g8 a2a3 f8h6 d3d4 f4f3 d2e1 b4c2 e1f2 c2d4 b2b4 f3g2 f1g2 ce5 a1a2 c8g4 d1f1 e5e6 c1h6 e6a2 f2e3 d4c6 h6f4 d8c8 g2h3 g4h3 h1h3 c6e5 f4e5 d6e5 f1d3 c8b8 h3f3 a2h2 a8c7 h2g1 e3d2 g8g2 d2c3 g1c1 c3b3 g2b2 b3a4 c1c7 f3f5
info depth 30 seldepth 61 multipv 1 manypv 0 score cp 121 upperbound nodes 651836627 nps 5679899 hashfull 999 tbhits 0 time 114762 pv h8g8 a2a3
info depth 30 seldepth 61 multipv 1 manypv 0 score cp 114 upperbound nodes 661815471 nps 5684332 hashfull 999 tbhits 0 time 116428 pv h8g8 a2a3
info depth 30 seldepth 62 multipv 1 manypv 0 score cp 121 lowerbound nodes 715306143 nps 5703240 hashfull 999 tbhits 0 time 125421 pv h8g8
info depth 30 seldepth 62 multipv 1 manypv 0 score cp 112 upperbound nodes 723263957 nps 5705819 hashfull 999 tbhits 0 time 126759 pv h8g8 a2a3
info depth 30 seldepth 62 multipv 1 manypv 0 score cp 124 lowerbound nodes 747518824 nps 5711875 hashfull 999 tbhits 0 time 130871 pv h8g8
info depth 30 seldepth 62 multipv 1 manypv 0 score cp 123 nodes 751729399 nps 5712186 hashfull 999 tbhits 0 time 131601 pv h8g8 a2a3 f8h6 d3d4 f4f3 d2e1 b4c2 e1f2 c2d4 b2b4 f3g2 f1g2 ce5 a1a2 c8g4 d1f1 e5e6 c1h6 e6a2 f2e3 d4c6 f1d3 d8c8 d3d2 a2a3 e3f2 c8b8 a8b6 a7b6 d2d6 b8a7 h6c1 a3a4 d6d2 g4e6 c1b2 g8d8 d2c3 c6b4 h1a1 b4a2 c3a3 b6b5 a3e3 a7a8 b2f6 d8c8 f2g1 b5b4 ed4 a4a7 d4a7 a8a7
info depth 31 seldepth 62 multipv 1 manypv 0 score cp 130 lowerbound nodes 886772524 nps 5725582 hashfull 999 tbhits 0 time 154879 pv h8g8
info depth 31 seldepth 62 multipv 1 manypv 0 score cp 137 lowerbound nodes 934068832 nps 5721217 hashfull 999 tbhits 0 time 163264 pv h8g8
info depth 31 seldepth 62 multipv 1 manypv 0 score cp 147 lowerbound nodes 1039809551 nps 5735677 hashfull 999 tbhits 0 time 181288 pv h8g8
info depth 31 seldepth 62 multipv 1 manypv 0 score cp 162 lowerbound nodes 1138823253 nps 5741657 hashfull 999 tbhits 0 time 198344 pv h8g8

Try for 6:

setoption name Threads value 6
ucinewgame
position fen N1bk1b1r/pp3p1p/3p4/2q5/1n2Pp1P/3P4/PPPK2P1/R1BQ1B1R b - - 8 17
go wtime 10000000  btime 10000000

info depth 1 seldepth 1 multipv 1 manypv 0 score cp 84 nodes 363 nps 121000 tbhits 0 time 3 pv f8g7
info depth 2 seldepth 2 multipv 1 manypv 0 score cp 39 nodes 1391 nps 347750 tbhits 0 time 4 pv b4c6 a2a3
info depth 3 seldepth 4 multipv 1 manypv 0 score cp 8 nodes 2165 nps 433000 tbhits 0 time 5 pv d6d5 a2a3 c5e3 d2c3
info depth 4 seldepth 6 multipv 1 manypv 0 score cp -75 nodes 25440 nps 2120000 tbhits 0 time 12 pv c5e3 d2c3 e3c5 c3b3 b4c6 c2c3
info depth 5 seldepth 8 multipv 1 manypv 0 score cp -118 nodes 30075 nps 2148214 tbhits 0 time 14 pv c5e3 d2c3 e3c5 c3b3 b4c2 d1c2 c8e6 c2c4
info depth 6 seldepth 10 multipv 1 manypv 0 score cp -118 nodes 31283 nps 2234500 tbhits 0 time 14 pv c5e3 d2c3 e3c5 c3b3 b4c2 d1c2 c8e6 c2c4 e6c4 d3c4
info depth 7 seldepth 11 multipv 1 manypv 0 score cp -118 nodes 34768 nps 2317866 tbhits 0 time 15 pv c5e3 d2c3 e3c5 c3b3 b4c2 d1c2 c8e6 c2c4 e6c4 d3c4 c5c8
info depth 8 seldepth 17 multipv 1 manypv 0 score cp -86 nodes 39906 nps 2494125 tbhits 0 time 16 pv c5e3 d2c3 e3c5 c3b3 b4c2 d1c2 c8e6 c2c4 e6c4 d3c4 c5c8 f1e2
info depth 9 seldepth 19 multipv 1 manypv 0 score cp -75 nodes 54154 nps 2850210 tbhits 0 time 19 pv c5e3 d2c3 e3c5 c3b3 b4c2 d1c2 c8e6 c2c4 e6c4 d3c4 c5c8 c1f4 c8a8 a1d1
info depth 10 seldepth 20 multipv 1 manypv 0 score cp -67 nodes 71609 nps 3113434 tbhits 0 time 23 pv c5e3 d2c3 e3c5 c3b3 b4c2 d1c2 c8e6 c2c4 e6c4 d3c4 c5c8 c1f4 c8a8 a1d1 a8c8
info depth 11 seldepth 20 multipv 1 manypv 0 score cp -67 nodes 127011 nps 4097129 tbhits 0 time 31 pv c5e3 d2c3 e3c5 c3b3 b4c2 d1c2 c8e6 c2c4 e6c4 d3c4 c5c8 c1f4 c8a8 a1d1 a8c8
info depth 12 seldepth 20 multipv 1 manypv 0 score cp -27 nodes 159630 nps 4560857 tbhits 0 time 35 pv c5e3 d2c3 e3c5 c3b3 b4c2 d1c2 c8e6 c2c4 e6c4 d3c4 c5c8 c1f4 c8a8 g2g3 d8c7 f1g2 a8e8
info depth 13 seldepth 27 multipv 1 manypv 0 score cp -17 nodes 450851 nps 6534072 tbhits 0 time 69 pv c5e3 d2c3 e3c5 c3b3 b4c2 d1c2 c8e6 c2c4 e6c4 d3c4 c5c8 f1d3 c8a8 c1f4 h8g8 g2g3 a8c8 e4e5 d6e5
info depth 14 seldepth 27 multipv 1 manypv 0 score cp -4 nodes 553451 nps 6918137 tbhits 0 time 80 pv c5e3 d2c3 e3c5 c3b3 b4c2 d1c2 c8e6 c2c4 e6c4 d3c4 c5c8 f1d3 c8a8 c1f4 h8g8 g2g3 a8c8 a1d1 c8c6 e4e5
info depth 15 seldepth 27 multipv 1 manypv 0 score cp 0 nodes 751715 nps 7298203 tbhits 0 time 103 pv c5e3 d2c3 e3c5 c3d2
info depth 17 seldepth 36 multipv 1 manypv 0 score cp 0 nodes 23414612 nps 8121613 hashfull 999 tbhits 0 time 2883 pv c5e3 d2c3 e3c5 c3d2
info depth 18 seldepth 39 multipv 1 manypv 3 score cp 0 nodes 30560740 nps 8184450 hashfull 999 tbhits 0 time 3734 pv c5e3 d2c3 e3c5 c3d2
info depth 18 seldepth 39 multipv 1 manypv 3 score cp 0 nodes 30694393 nps 8185171 hashfull 999 tbhits 0 time 3750 pv c5e3 d2c3 e3c5 c3d2
info depth 18 seldepth 39 multipv 1 manypv 3 score cp 0 nodes 34716474 nps 8180130 hashfull 999 tbhits 0 time 4244 pv c5e3 d2c3 e3c5 c3d2
info depth 19 seldepth 39 multipv 1 manypv 0 score cp 0 nodes 35370246 nps 8178091 hashfull 999 tbhits 0 time 4325 pv c5e3 d2c3 e3c5 c3d2
info depth 20 seldepth 39 multipv 1 manypv 1 score cp 0 nodes 35780513 nps 8174665 hashfull 999 tbhits 0 time 4377 pv c5e3 d2c3 e3c5 c3d2
info depth 20 seldepth 39 multipv 1 manypv 2 score cp 0 nodes 37148077 nps 8173394 hashfull 999 tbhits 0 time 4545 pv c5e3 d2c3 e3c5 c3d2
info depth 20 seldepth 39 multipv 1 manypv 3 score cp 0 nodes 38631788 nps 8167397 hashfull 999 tbhits 0 time 4730 pv c5e3 d2c3 e3c5 c3d2
info depth 20 seldepth 39 multipv 1 manypv 3 score cp 0 nodes 40685608 nps 8182946 hashfull 999 tbhits 0 time 4972 pv c5e3 d2c3 e3c5 c3d2
info depth 20 seldepth 39 multipv 1 manypv 3 score cp 0 nodes 43770197 nps 8192063 hashfull 999 tbhits 0 time 5343 pv c5e3 d2c3 e3c5 c3d2
info depth 21 seldepth 39 multipv 1 manypv 0 score cp 0 nodes 45172499 nps 8196788 hashfull 999 tbhits 0 time 5511 pv c5e3 d2c3 e3c5 c3d2
info depth 22 seldepth 39 multipv 1 manypv 1 score cp 0 nodes 46422357 nps 8193144 hashfull 999 tbhits 0 time 5666 pv c5e3 d2c3 e3c5 c3d2
info depth 22 seldepth 39 multipv 1 manypv 2 score cp 0 nodes 48913531 nps 8194593 hashfull 999 tbhits 0 time 5969 pv c5e3 d2c3 e3c5 c3d2
info depth 22 seldepth 39 multipv 1 manypv 3 score cp 0 nodes 54799918 nps 8190093 hashfull 999 tbhits 0 time 6691 pv c5e3 d2c3 e3c5 c3d2
info depth 22 seldepth 42 multipv 1 manypv 3 score cp 0 nodes 65983843 nps 8212052 hashfull 999 tbhits 0 time 8035 pv c5e3 d2c3 e3c5 c3d2
info depth 22 seldepth 42 multipv 1 manypv 3 score cp 0 nodes 106211558 nps 8132584 hashfull 999 tbhits 0 time 13060 pv c5e3 d2c3 e3c5 c3d2
info depth 23 seldepth 42 multipv 1 manypv 0 score cp 0 nodes 110788274 nps 8152790 hashfull 999 tbhits 0 time 13589 pv c5e3 d2c3 e3c5 c3d2
info depth 24 seldepth 42 multipv 1 manypv 1 score cp 0 nodes 112798422 nps 8151942 hashfull 999 tbhits 0 time 13837 pv c5e3 d2c3 e3c5 c3d2
info depth 24 seldepth 42 multipv 1 manypv 2 score cp 0 nodes 115886634 nps 8154713 hashfull 999 tbhits 0 time 14211 pv c5e3 d2c3 e3c5 c3d2
info depth 24 seldepth 42 multipv 1 manypv 3 score cp 0 nodes 120431310 nps 8155435 hashfull 999 tbhits 0 time 14767 pv c5e3 d2c3 e3c5 c3d2
info depth 24 seldepth 42 multipv 1 manypv 3 score cp 0 nodes 152064740 nps 8160168 hashfull 999 tbhits 0 time 18635 pv c5e3 d2c3 e3c5 c3d2
info depth 24 seldepth 42 multipv 1 manypv 3 score cp 0 nodes 178283501 nps 8175517 hashfull 999 tbhits 0 time 21807 pv c5e3 d2c3 e3c5 c3d2
info depth 25 seldepth 42 multipv 1 manypv 0 score cp 6 lowerbound nodes 189262512 nps 8179373 hashfull 999 tbhits 0 time 23139 pv h8g8
info depth 25 seldepth 42 multipv 1 manypv 0 score cp 13 lowerbound nodes 192181065 nps 8178265 hashfull 999 tbhits 0 time 23499 pv h8g8
info depth 25 seldepth 42 multipv 1 manypv 0 score cp 24 lowerbound nodes 196097091 nps 8178208 hashfull 999 tbhits 0 time 23978 pv h8g8
info depth 25 seldepth 45 multipv 1 manypv 0 score cp 39 lowerbound nodes 218018518 nps 8190026 hashfull 999 tbhits 0 time 26620 pv h8g8
info depth 25 seldepth 45 multipv 1 manypv 0 score cp 59 lowerbound nodes 228065548 nps 8188480 hashfull 999 tbhits 0 time 27852 pv h8g8
info depth 25 seldepth 45 multipv 1 manypv 0 score cp 86 lowerbound nodes 229117852 nps 8188629 hashfull 999 tbhits 0 time 27980 pv h8g8
info depth 25 seldepth 45 multipv 1 manypv 0 score cp 122 lowerbound nodes 236917288 nps 8187913 hashfull 999 tbhits 0 time 28935 pv h8g8
info depth 25 seldepth 52 multipv 1 manypv 0 score cp 93 upperbound nodes 266268274 nps 8213086 hashfull 999 tbhits 0 time 32420 pv h8g8 c2c4
info depth 25 seldepth 52 multipv 1 manypv 0 score cp 131 lowerbound nodes 279364887 nps 8220966 hashfull 999 tbhits 0 time 33982 pv h8g8
info depth 25 seldepth 52 multipv 1 manypv 0 score cp 117 nodes 283714942 nps 8227198 hashfull 999 tbhits 0 time 34485 pv h8g8 a2a3 f8h6 d3d4 f4f3 d2e1 b4c2 e1f2 c2d4 b2b4 f3g2 f1g2 c5e5 a1a2 c8g4 d1f1 e5f6 f2e1 f6f1 e1f1 h6c1 g2h3 g4f3 h3g2 f3e2 f1f2 c1f4 a2e2 d4e2 f2e2 g8g2 e2f3 g2h2 h1g1 f4e5 g1g8 d8d7 g8b8 d7c6 b8c8 c6b5 c8c7 h2h3 f3e2 h3a3 c7b7 b5c4 b7f7 h7h5 a8c7 a3h3
info depth 26 seldepth 59 multipv 1 manypv 0 score cp 110 upperbound nodes 287736929 nps 8231874 hashfull 999 tbhits 0 time 34954 pv h8g8 a2a3
info depth 26 seldepth 59 multipv 1 manypv 0 score cp 117 lowerbound nodes 288689620 nps 8233219 hashfull 999 tbhits 0 time 35064 pv h8g8
info depth 26 seldepth 59 multipv 1 manypv 0 score cp 122 nodes 291467127 nps 8236792 hashfull 999 tbhits 0 time 35386 pv h8g8 a2a3 f8h6 d3d4 f4f3 d2e1 b4c2 e1f2 c2d4 b2b4 f3g2 f1g2 c5e5 a1a2 c8g4 d1f1 e5f6 f2e1 f6f1 e1f1 h6c1 g2h3 g4f3 h3g2 f3e2 f1f2 c1f4 a2e2 d4e2 f2e2 g8g2 e2f3 g2h2 h1g1 f4e5 g1g8 d8d7 g8b8 d7c6 b8c8 c6b5 c8c7 h2h3 f3e2 h3a3 c7f7 h7h5 a8c7 b5c4 c7d5 a3h3 f7c7 c4d4
info depth 27 seldepth 64 multipv 1 manypv 0 score cp 115 upperbound nodes 316664085 nps 8277284 hashfull 999 tbhits 0 time 38257 pv h8g8 a2a3
info depth 27 seldepth 64 multipv 1 manypv 0 score cp 111 nodes 326205731 nps 8292382 hashfull 999 tbhits 0 time 39338 pv h8g8 a2a3 f8h6 d3d4 f4f3 d2e1 b4c2 e1f2 c2d4 b2b4 f3g2 f1g2 c5e5 a1a2 c8g4 d1f1 e5f6 f2e1 f6f1 e1f1 h6c1 g2h3 g4f3 h3g2 f3e2 f1f2 c1f4 a2e2 d4e2 f2e2 g8g2 e2f3 g2h2 h1g1 f4e5 g1g8 d8d7 g8b8 d7c6 b4b5 c6b5 b8b7 b5c4 f3g4 h2f2 b7a7 c4d3 a8c7 f2f4 g4g5 h7h6 g5h6 f4h4 h6g5 h4e4 c7d5
info depth 28 seldepth 64 multipv 1 manypv 0 score cp 118 lowerbound nodes 355401503 nps 8314068 hashfull 999 tbhits 0 time 42747 pv h8g8
info depth 28 seldepth 64 multipv 1 manypv 0 score cp 125 lowerbound nodes 375459871 nps 8318596 hashfull 999 tbhits 0 time 45135 pv h8g8
info depth 28 seldepth 64 multipv 1 manypv 0 score cp 121 nodes 380831960 nps 8321285 hashfull 999 tbhits 0 time 45766 pv h8g8 a2a3 f8h6 d3d4 f4f3 d2e1 b4c2 e1f2 c2d4 b2b4 f3g2 f1g2 c5e5 a1a2 c8g4 d1f1 e5f6 f2e1 f6f1 e1f1 h6c1 g2h3 g4f3 h3g2 f3e2 f1f2 c1f4 a2e2 d4e2 f2e2 g8g2 e2f3 g2h2 h1g1 f4e5 g1g8 d8d7 g8b8 h2h3 f3e2 b7b6 b8b7 d7c8 b7f7 h3h4 a8c7 h4e4 e2f3 e4f4 f7f4 e5f4 c7b5 f4e5 b5a7 c8c7 a7b5 c7c6
info depth 29 seldepth 64 multipv 1 manypv 0 score cp 121 nodes 415413306 nps 8349177 hashfull 999 tbhits 0 time 49755 pv h8g8 a2a3 f8h6 d3d4 f4f3 d2e1 b4c2 e1f2 c2d4 b2b4 f3g2 f1g2 c5e5 a1a2 c8g4 d1f1 e5f6 f2e1 f6f1 e1f1 h6c1 g2h3 g4f3 h3g2 f3e2 f1f2 c1f4 a2e2 d4e2 f2e2 g8g2 e2f3 g2h2 h1g1 f4e5 g1g8 d8d7 g8b8 h2h3 f3e2 b7b6 b8b7 d7c8 b7f7 h3h4 a8c7 h4e4 e2f3 e4f4 f7f4 e5f4 c7b5 f4e5 b5a7 c8c7 a7b5 c7c6

@rwst
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rwst commented Jun 5, 2016

@Rocky640

1) Abrok stockfish_16041611_x64_modern.exe via Wine emulator:
setoption name Threads value 4
position fen N1bk1b1r/pp3p1p/3p4/2q5/1n2Pp1P/3P4/PPPK2P1/R1BQ1B1R b - - 8 17
go infinite
info depth 40 seldepth 29 multipv 1 score cp 0 nodes 1562593254 nps 8977686 hashfull 999 tbhits 0 time 174053 pv c5e3 d2c3 e3c5 c3d2
info depth 43 seldepth 54 multipv 1 score cp 0 nodes 10296551297 nps 9360901 hashfull 999 tbhits 0 time 1099953 pv c5e3 d2c3 e3c5 c3d2
info depth 44 currmove c5e3 currmovenumber 1
info depth 44 currmove c8e6 currmovenumber 2
(stopped after 19min)

2) stockfish_16042303_x64_modern.exe via Wine
setoption name Threads value 4
position fen N1bk1b1r/pp3p1p/3p4/2q5/1n2Pp1P/3P4/PPPK2P1/R1BQ1B1R b - - 8 17
go infinite
info depth 44 seldepth 19 multipv 1 score cp 0 nodes 5202457656 nps 9385025 hashfull 999 tbhits 0 time 554336 pv c5e3 d2c3 e3c5 c3d2
info depth 45 seldepth 19 multipv 1 score cp 0 nodes 10532602386 nps 9385664 hashfull 999 tbhits 0 time 1122201 pv c5e3 d2c3 e3c5 c3d2
info depth 46 currmove c5e3 currmovenumber 1
info depth 46 currmove c8e6 currmovenumber 2
info depth 46 currmove c8d7 currmovenumber 3
info depth 46 currmove c5c6 currmovenumber 4
info depth 46 currmove c5c7 currmovenumber 5
info depth 46 currmove c8g4 currmovenumber 6
info depth 46 currmove d8d7 currmovenumber 7
info depth 46 currmove d6d5 currmovenumber 8
info depth 46 currmove c5d4 currmovenumber 9
info depth 46 currmove c5f2 currmovenumber 10
info depth 46 currmove c8f5 currmovenumber 11
info depth 46 currmove f7f6 currmovenumber 12
info depth 46 currmove d8e7 currmovenumber 13
info depth 46 currmove h8g8 currmovenumber 14
...
info depth 46 seldepth 19 multipv 1 score cp 0 nodes 12345982692 nps 9452562 hashfull 999 tbhits 0 time 1306099 pv c5e3 d2c3 e3c5 c3d2
(stopped after 21min)

What is interesting with 1) is that Rg8 is considered early and lot of time put into it, but then for some time moved to a much lower position. At depth 42 most of the time goes into Rg8 at position 3. But with 2) it's worse---while higher depths are reached faster the Rg8 is positioned lower consistently so that moves like f8g7 or c8d7 get the time first.

On another note I think Stockfish should report the commit it was built from because it can be unclear just from the date given.

@Rocky640
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Rocky640 commented Jun 5, 2016 •
edited

Can you do a similar test with
http://abrok.eu/stockfish/builds/5972c4a678dfd50648e222fcf2f029330ed9de8a/win64modern/stockfish_16010314_x64_modern.exe

(This is SF 7 restore dev).

Does it still like h8g8 (with a positive cp) after a few minutes ?

@rwst
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rwst commented Jun 6, 2016 

info depth 35 seldepth 15 multipv 1 score cp 0 nodes 280737851 nps 8858039 hashfull 999 tbhits 0 time 31693 pv c5e3 d2c3 e3c5 c3d2
info depth 36 currmove c5e3 currmovenumber 1
info depth 36 currmove c8e6 currmovenumber 2
info depth 36 currmove h8g8 currmovenumber 3
info depth 36 seldepth 53 multipv 1 score cp 6 lowerbound nodes 1568607784 nps 9130535 hashfull 999 tbhits 0 time 171798 pv h8g8
info depth 36 currmove h8g8 currmovenumber 1
info depth 36 seldepth 61 multipv 1 score cp 13 lowerbound nodes 2156465201 nps 9165254 hashfull 999 tbhits 0 time 235287 pv h8g8
info depth 36 currmove h8g8 currmovenumber 1
info depth 36 seldepth 61 multipv 1 score cp 24 lowerbound nodes 3047417520 nps 9262357 hashfull 999 tbhits 0 time 329011 pv h8g8
info depth 36 currmove h8g8 currmovenumber 1

Is there a reason why you couldn't do these yourself?

@Rocky640
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Rocky640 commented Jun 6, 2016

I was in a middle of a SPSA tuning session which could not be stopped and was taking all my resources.

@rohitrajiit
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Something similar happens in analysis of Wei Yi RF7 game against Bruzon.
[Event "6th Hainan Danzhou"]
[Site "Danzhou CHN"]
[Date "2015.07.03"]
[Round "2.4"]
[White "Wei Yi"]
[Black "Lazaro Bruzon Batista"]
[Result "1-0"]
[BlackElo "2669"]
[ECO "B85"]
[Opening "Sicilian"]
[Variation "Scheveningen, Classical, Main Line, 9...Nc6 10.Qe1 Qc7 11.Qg3"]
[WhiteElo "2000"]
[TimeControl "1800+15"]
[Termination "normal"]
[PlyCount "71"]
[WhiteType "human"]
[BlackType "human"]

  1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. Be2 Nc6 5. d4 cxd4 6. Nxd4 Qc7 7. O-O Nf6
  2. Be3 Be7 9. f4 d6 10. Kh1 O-O 11. Qe1 Nxd4 12. Bxd4 b5 13. Qg3 Bb7 14. a3
    Rad8 15. Rae1 Rd7 16. Bd3 Qd8 17. Qh3 g6 18. f5 e5 19. Be3 Re8 20. fxg6
    hxg6 21. Nd5 Nxd5 22. Rxf7 Kxf7 23. Qh7+ Ke6 24. exd5+ Kxd5 25. Be4+ Kxe4
  3. Qf7 Bf6 27. Bd2+ Kd4 28. Be3+ Ke4 29. Qb3 Kf5 30. Rf1+ Kg4 31. Qd3
    Bxg2+ 32. Kxg2 Qa8+ 33. Kg1 Bg5 34. Qe2+ Kh4 35. Bf2+ Kh3 36. Be1 1-0

On my slow system latest master sees Rf7 instantly but with 2 move perpetual but keeps giving higher and higher depth while giving only this 2 move perpetual. Only when i forward to 24 Kxd5 then it sees the win.
This Many-PV patch also does not fare better.

@lp--
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lp-- commented Jun 7, 2016

@rohitrajiit How did you run it? Which fen? For now it does not wotk in analysis mode, only with time management
You need to run it like specified above.
setoption name Threads value 6
setoption name Hash value 512
ucinewgame
position fen .... (or uci pgn command)
go wtime 10000000 btime 10000000

@lp--
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lp-- commented Jun 7, 2016

@rohitrajiit: Ok, I see. This is quite similar to previous game after 23. Qh7+ Ke6. Here i suppose you checked that master want to go for repetition with 24. Qh3+ -- I did not check what master does.
So multiPV patch is suppose to kick in at this point and find 24. exd5+

I had only one core to spare now:

ucinewgame
position fen 3qr3/1b1rb2Q/p2pk1p1/1p1np3/4P3/P2BB3/1PP3PP/4R2K w - - 2 24
go wtime 10000000  btime 10000000

info depth 1 seldepth 2 multipv 1 manypv 0 score cp 91 nodes 92 nps 30666 tbhits 0 time 3 pv e4d5 e6d5 h7g6
info depth 2 seldepth 4 multipv 1 manypv 0 score cp 96 nodes 233 nps 77666 tbhits 0 time 3 pv e4d5 b7d5 h7g6 e7f6
info depth 3 seldepth 5 multipv 1 manypv 0 score cp 49 nodes 702 nps 140400 tbhits 0 time 5 pv e4d5 e6d5 c2c4 d5c6
info depth 4 seldepth 6 multipv 1 manypv 0 score cp 49 nodes 926 nps 185200 tbhits 0 time 5 pv e4d5 e6d5 c2c4 d5c6 c4b5 c6c7 b5a6
info depth 5 seldepth 7 multipv 1 manypv 0 score cp 49 nodes 1317 nps 219500 tbhits 0 time 6 pv e4d5 e6d5 c2c4 d5c6 c4b5 c6c7 b5a6
info depth 6 seldepth 8 multipv 1 manypv 0 score cp 49 nodes 2438 nps 270888 tbhits 0 time 9 pv e4d5 b7d5 h7g6 e7f6 e1f1 d7g7 f1f6 d8f6
info depth 7 seldepth 12 multipv 1 manypv 0 score cp 0 nodes 5976 nps 332000 tbhits 0 time 18 pv h7h3 e6f7 h3h7 f7e6
info depth 8 seldepth 12 multipv 1 manypv 0 score cp 0 nodes 7845 nps 356590 tbhits 0 time 22 pv h7h3 e6f7 h3h7 f7e6
info depth 10 seldepth 13 multipv 1 manypv 0 score cp 0 nodes 74781 nps 1150476 tbhits 0 time 65 pv h7h3 e6f7 h3h7 f7e6
info depth 12 seldepth 18 multipv 1 manypv 0 score cp 0 nodes 119357 nps 1311615 tbhits 0 time 91 pv h7h3 e6f7 h3h7 f7e6
info depth 14 seldepth 22 multipv 1 manypv 0 score cp 0 nodes 650991 nps 1576249 tbhits 0 time 413 pv h7h3 e6f7 h3h7 f7e6
info depth 16 seldepth 25 multipv 1 manypv 0 score cp 0 nodes 1563619 nps 1528464 hashfull 631 tbhits 0 time 1023 pv h7h3 e6f7 h3h7 f7e6
info depth 18 seldepth 35 multipv 1 manypv 0 score cp 0 nodes 4049077 nps 1529685 hashfull 964 tbhits 0 time 2647 pv h7h3 e6f7 h3h7 f7e6
info depth 19 seldepth 35 multipv 1 manypv 3 score cp 0 nodes 5061186 nps 1525832 hashfull 991 tbhits 0 time 3317 pv h7h3 e6f7 h3h7 f7e6
info depth 20 seldepth 35 multipv 1 manypv 0 score cp 0 nodes 5186395 nps 1526757 hashfull 993 tbhits 0 time 3397 pv h7h3 e6f7 h3h7 f7e6
info depth 21 seldepth 35 multipv 1 manypv 1 score cp 0 nodes 5388380 nps 1530355 hashfull 994 tbhits 0 time 3521 pv h7h3 e6f7 h3h7 f7e6
info depth 21 seldepth 35 multipv 1 manypv 2 score cp 0 nodes 5527354 nps 1532396 hashfull 994 tbhits 0 time 3607 pv h7h3 e6f7 h3h7 f7e6
info depth 21 seldepth 35 multipv 1 manypv 3 score cp 0 nodes 5596241 nps 1529863 hashfull 994 tbhits 0 time 3658 pv h7h3 e6f7 h3h7 f7e6
info depth 21 seldepth 35 multipv 1 manypv 3 score cp 0 nodes 5961388 nps 1531309 hashfull 995 tbhits 0 time 3893 pv h7h3 e6f7 h3h7 f7e6
info depth 21 seldepth 35 multipv 1 manypv 3 score cp 0 nodes 7295276 nps 1517004 hashfull 999 tbhits 0 time 4809 pv h7h3 e6f7 h3h7 f7e6
info depth 22 seldepth 35 multipv 1 manypv 0 score cp 0 nodes 7602797 nps 1521776 hashfull 999 tbhits 0 time 4996 pv h7h3 e6f7 h3h7 f7e6
info depth 23 seldepth 35 multipv 1 manypv 1 score cp 0 nodes 7889281 nps 1524793 hashfull 999 tbhits 0 time 5174 pv h7h3 e6f7 h3h7 f7e6
info depth 23 seldepth 35 multipv 1 manypv 2 score cp 0 nodes 8253686 nps 1529309 hashfull 999 tbhits 0 time 5397 pv h7h3 e6f7 h3h7 f7e6
info depth 23 seldepth 35 multipv 1 manypv 3 score cp 0 nodes 8348918 nps 1529946 hashfull 999 tbhits 0 time 5457 pv h7h3 e6f7 h3h7 f7e6
info depth 23 seldepth 35 multipv 1 manypv 3 score cp 0 nodes 9047062 nps 1528219 hashfull 999 tbhits 0 time 5920 pv h7h3 e6f7 h3h7 f7e6
info depth 23 seldepth 58 multipv 1 manypv 3 score cp 0 nodes 19082044 nps 1538998 hashfull 999 tbhits 0 time 12399 pv h7h3 e6f7 h3h7 f7e6
info depth 24 seldepth 58 multipv 1 manypv 0 score cp 0 nodes 19514531 nps 1538758 hashfull 999 tbhits 0 time 12682 pv h7h3 e6f7 h3h7 f7e6
info depth 25 seldepth 58 multipv 1 manypv 1 score cp 0 nodes 20099887 nps 1540103 hashfull 999 tbhits 0 time 13051 pv h7h3 e6f7 h3h7 f7e6
info depth 25 seldepth 58 multipv 1 manypv 2 score cp 0 nodes 20942898 nps 1542754 hashfull 999 tbhits 0 time 13575 pv h7h3 e6f7 h3h7 f7e6
info depth 25 seldepth 58 multipv 1 manypv 3 score cp 0 nodes 21201787 nps 1542845 hashfull 999 tbhits 0 time 13742 pv h7h3 e6f7 h3h7 f7e6
info depth 25 seldepth 58 multipv 1 manypv 3 score cp 0 nodes 22688948 nps 1543570 hashfull 999 tbhits 0 time 14699 pv h7h3 e6f7 h3h7 f7e6
info depth 25 seldepth 58 multipv 1 manypv 3 score cp 0 nodes 105582796 nps 1533029 hashfull 999 tbhits 0 time 68872 pv h7h3 e6f7 h3h7 f7e6
info depth 26 seldepth 58 multipv 1 manypv 0 score cp 0 nodes 106515004 nps 1533472 hashfull 999 tbhits 0 time 69460 pv h7h3 e6f7 h3h7 f7e6
info depth 27 seldepth 58 multipv 1 manypv 1 score cp 0 nodes 107908978 nps 1534498 hashfull 999 tbhits 0 time 70322 pv h7h3 e6f7 h3h7 f7e6
info depth 27 seldepth 58 multipv 1 manypv 2 score cp 0 nodes 109198210 nps 1535580 hashfull 999 tbhits 0 time 71112 pv h7h3 e6f7 h3h7 f7e6
info depth 27 seldepth 58 multipv 1 manypv 3 score cp 0 nodes 110348094 nps 1537716 hashfull 999 tbhits 0 time 71761 pv h7h3 e6f7 h3h7 f7e6
info depth 27 seldepth 58 multipv 1 manypv 3 score cp 0 nodes 113318208 nps 1538813 hashfull 999 tbhits 0 time 73640 pv h7h3 e6f7 h3h7 f7e6
info depth 27 seldepth 58 multipv 1 manypv 3 score cp 0 nodes 167251615 nps 1523211 hashfull 999 tbhits 0 time 109802 pv h7h3 e6f7 h3h7 f7e6
info depth 28 seldepth 58 multipv 1 manypv 0 score cp 0 nodes 169252856 nps 1524676 hashfull 999 tbhits 0 time 111009 pv h7h3 e6f7 h3h7 f7e6
info depth 29 seldepth 58 multipv 1 manypv 1 score cp 0 nodes 171239648 nps 1525792 hashfull 999 tbhits 0 time 112230 pv h7h3 e6f7 h3h7 f7e6
info depth 29 seldepth 58 multipv 1 manypv 2 score cp 0 nodes 172898674 nps 1526577 hashfull 999 tbhits 0 time 113259 pv h7h3 e6f7 h3h7 f7e6
info depth 29 seldepth 58 multipv 1 manypv 3 score cp 0 nodes 173697448 nps 1526997 hashfull 999 tbhits 0 time 113751 pv h7h3 e6f7 h3h7 f7e6
info depth 29 seldepth 58 multipv 1 manypv 3 score cp 0 nodes 178440435 nps 1527717 hashfull 999 tbhits 0 time 116802 pv h7h3 e6f7 h3h7 f7e6
info depth 29 seldepth 58 multipv 1 manypv 3 score cp 0 nodes 200038304 nps 1524298 hashfull 999 tbhits 0 time 131233 pv h7h3 e6f7 h3h7 f7e6
info depth 30 seldepth 58 multipv 1 manypv 0 score cp 0 nodes 203811987 nps 1526578 hashfull 999 tbhits 0 time 133509 pv h7h3 e6f7 h3h7 f7e6
info depth 31 seldepth 58 multipv 1 manypv 1 score cp 0 nodes 208358160 nps 1529469 hashfull 999 tbhits 0 time 136229 pv h7h3 e6f7 h3h7 f7e6
info depth 31 seldepth 58 multipv 1 manypv 2 score cp 0 nodes 212165451 nps 1532013 hashfull 999 tbhits 0 time 138488 pv h7h3 e6f7 h3h7 f7e6
info depth 31 seldepth 58 multipv 1 manypv 3 score cp 0 nodes 213668300 nps 1532804 hashfull 999 tbhits 0 time 139397 pv h7h3 e6f7 h3h7 f7e6
info depth 31 seldepth 58 multipv 1 manypv 3 score cp 0 nodes 222817196 nps 1534247 hashfull 999 tbhits 0 time 145229 pv h7h3 e6f7 h3h7 f7e6
info depth 31 seldepth 58 multipv 1 manypv 3 score cp 0 nodes 400613932 nps 1539165 hashfull 999 tbhits 0 time 260280 pv h7h3 e6f7 h3h7 f7e6
info depth 32 seldepth 58 multipv 1 manypv 0 score cp 0 nodes 404255351 nps 1539967 hashfull 999 tbhits 0 time 262509 pv h7h3 e6f7 h3h7 f7e6
info depth 33 seldepth 58 multipv 1 manypv 1 score cp 0 nodes 412226080 nps 1542300 hashfull 999 tbhits 0 time 267280 pv h7h3 e6f7 h3h7 f7e6
info depth 33 seldepth 72 multipv 1 manypv 2 score cp 359 nodes 948371028 nps 1741418 hashfull 999 tbhits 0 time 544597 pv e4d5 b7d5 d3g6 d5g2 h1g2 d6d5 h7f7 e6d6 f7e8 d8e8 g6e8 d7c7 c2c3 e7f6 e1d1 c7h7 d1f1 h7g7 g2f3 d6e6 e8h5 d5d4 c3d4 e5d4 e3f2 e6d5 f1d1 f6e5 h2h4 d5c4 f3e4 g7e7 h5g6 d4d3 b2b3 c4b3 d1d3 e5c3 e4f3 b5b4 a3b4 b3b4 h4h5 a6a5
bestmove e4d5 ponder b7d5

Takes long time to find 545sec (I guess I have lower nps because cpus are busy) .
Tried also with higher hash -- it took little faster 333sec
Both 1 core runs must be repeatable.

setoption name Hash value 1024
ucinewgame
position fen 3qr3/1b1rb2Q/p2pk1p1/1p1np3/4P3/P2BB3/1PP3PP/4R2K w - - 2 24
go wtime 10000000 btime 10000000

info depth 1 seldepth 2 multipv 1 manypv 0 score cp 91 nodes 92 nps 30666 tbhits 0 time 3 pv e4d5 e6d5 h7g6
info depth 2 seldepth 4 multipv 1 manypv 0 score cp 96 nodes 233 nps 58250 tbhits 0 time 4 pv e4d5 b7d5 h7g6 e7f6
info depth 3 seldepth 5 multipv 1 manypv 0 score cp 49 nodes 702 nps 140400 tbhits 0 time 5 pv e4d5 e6d5 c2c4 d5c6
info depth 4 seldepth 6 multipv 1 manypv 0 score cp 49 nodes 926 nps 154333 tbhits 0 time 6 pv e4d5 e6d5 c2c4 d5c6 c4b5 c6c7 b5a6
info depth 5 seldepth 7 multipv 1 manypv 0 score cp 49 nodes 1317 nps 188142 tbhits 0 time 7 pv e4d5 e6d5 c2c4 d5c6 c4b5 c6c7 b5a6
info depth 6 seldepth 8 multipv 1 manypv 0 score cp 49 nodes 2438 nps 243800 tbhits 0 time 10 pv e4d5 b7d5 h7g6 e7f6 e1f1 d7g7 f1f6 d8f6
info depth 7 seldepth 12 multipv 1 manypv 0 score cp 0 nodes 5976 nps 351529 tbhits 0 time 17 pv h7h3 e6f7 h3h7 f7e6
info depth 8 seldepth 12 multipv 1 manypv 0 score cp 0 nodes 7845 nps 435833 tbhits 0 time 18 pv h7h3 e6f7 h3h7 f7e6
info depth 10 seldepth 13 multipv 1 manypv 0 score cp 0 nodes 74781 nps 1187000 tbhits 0 time 63 pv h7h3 e6f7 h3h7 f7e6
info depth 12 seldepth 18 multipv 1 manypv 0 score cp 0 nodes 119357 nps 1311615 tbhits 0 time 91 pv h7h3 e6f7 h3h7 f7e6
info depth 14 seldepth 22 multipv 1 manypv 0 score cp 0 nodes 614312 nps 1520574 tbhits 0 time 404 pv h7h3 e6f7 h3h7 f7e6
info depth 16 seldepth 26 multipv 1 manypv 0 score cp 0 nodes 1383389 nps 1481144 tbhits 0 time 934 pv h7h3 e6f7 h3h7 f7e6
info depth 18 seldepth 28 multipv 1 manypv 0 score cp 0 nodes 2489906 nps 1506295 hashfull 11 tbhits 0 time 1653 pv h7h3 e6f7 h3h7 f7e6
info depth 20 seldepth 34 multipv 1 manypv 0 score cp 0 nodes 4526446 nps 1493383 hashfull 23 tbhits 0 time 3031 pv h7h3 e6f7 h3h7 f7e6
info depth 21 seldepth 34 multipv 1 manypv 1 score cp 0 nodes 4713210 nps 1497207 hashfull 24 tbhits 0 time 3148 pv h7h3 e6f7 h3h7 f7e6
info depth 21 seldepth 34 multipv 1 manypv 2 score cp 0 nodes 4866621 nps 1498805 hashfull 25 tbhits 0 time 3247 pv h7h3 e6f7 h3h7 f7e6
info depth 21 seldepth 34 multipv 1 manypv 3 score cp 0 nodes 4908123 nps 1499579 hashfull 25 tbhits 0 time 3273 pv h7h3 e6f7 h3h7 f7e6
info depth 21 seldepth 34 multipv 1 manypv 3 score cp 0 nodes 5114616 nps 1497252 hashfull 27 tbhits 0 time 3416 pv h7h3 e6f7 h3h7 f7e6
info depth 21 seldepth 42 multipv 1 manypv 3 score cp 0 nodes 20873407 nps 1421023 hashfull 158 tbhits 0 time 14689 pv h7h3 e6f7 h3h7 f7e6
info depth 22 seldepth 42 multipv 1 manypv 0 score cp 0 nodes 21153678 nps 1421904 hashfull 161 tbhits 0 time 14877 pv h7h3 e6f7 h3h7 f7e6
info depth 23 seldepth 42 multipv 1 manypv 1 score cp 0 nodes 21580391 nps 1424072 hashfull 165 tbhits 0 time 15154 pv h7h3 e6f7 h3h7 f7e6
info depth 23 seldepth 42 multipv 1 manypv 2 score cp 0 nodes 21931955 nps 1426190 hashfull 168 tbhits 0 time 15378 pv h7h3 e6f7 h3h7 f7e6
info depth 23 seldepth 42 multipv 1 manypv 3 score cp 0 nodes 22034732 nps 1426565 hashfull 168 tbhits 0 time 15446 pv h7h3 e6f7 h3h7 f7e6
info depth 23 seldepth 42 multipv 1 manypv 3 score cp 0 nodes 22584523 nps 1426420 hashfull 172 tbhits 0 time 15833 pv h7h3 e6f7 h3h7 f7e6
info depth 23 seldepth 49 multipv 1 manypv 3 score cp 0 nodes 41080663 nps 1443097 hashfull 317 tbhits 0 time 28467 pv h7h3 e6f7 h3h7 f7e6
info depth 24 seldepth 49 multipv 1 manypv 0 score cp 0 nodes 41513139 nps 1444789 hashfull 317 tbhits 0 time 28733 pv h7h3 e6f7 h3h7 f7e6
info depth 25 seldepth 49 multipv 1 manypv 1 score cp 0 nodes 41937442 nps 1446318 hashfull 323 tbhits 0 time 28996 pv h7h3 e6f7 h3h7 f7e6
info depth 25 seldepth 49 multipv 1 manypv 2 score cp 0 nodes 100097204 nps 1440454 hashfull 656 tbhits 0 time 69490 pv h7h3 e6f7 h3h7 f7e6
info depth 25 seldepth 49 multipv 1 manypv 3 score cp 0 nodes 100234954 nps 1440592 hashfull 658 tbhits 0 time 69579 pv h7h3 e6f7 h3h7 f7e6
info depth 25 seldepth 49 multipv 1 manypv 3 score cp 0 nodes 101024869 nps 1441133 hashfull 661 tbhits 0 time 70101 pv h7h3 e6f7 h3h7 f7e6
info depth 25 seldepth 50 multipv 1 manypv 3 score cp 0 nodes 153285551 nps 1429142 hashfull 853 tbhits 0 time 107257 pv h7h3 e6f7 h3h7 f7e6
info depth 26 seldepth 50 multipv 1 manypv 0 score cp 0 nodes 153874043 nps 1429219 hashfull 853 tbhits 0 time 107663 pv h7h3 e6f7 h3h7 f7e6
info depth 27 seldepth 50 multipv 1 manypv 1 score cp 0 nodes 154703657 nps 1429833 hashfull 855 tbhits 0 time 108197 pv h7h3 e6f7 h3h7 f7e6
info depth 27 seldepth 50 multipv 1 manypv 2 score cp 0 nodes 155656453 nps 1430613 hashfull 856 tbhits 0 time 108804 pv h7h3 e6f7 h3h7 f7e6
info depth 27 seldepth 50 multipv 1 manypv 3 score cp 0 nodes 155998647 nps 1430655 hashfull 856 tbhits 0 time 109040 pv h7h3 e6f7 h3h7 f7e6
info depth 27 seldepth 50 multipv 1 manypv 3 score cp 0 nodes 158126209 nps 1430734 hashfull 861 tbhits 0 time 110521 pv h7h3 e6f7 h3h7 f7e6
info depth 27 seldepth 50 multipv 1 manypv 3 score cp 0 nodes 171632379 nps 1430615 hashfull 894 tbhits 0 time 119971 pv h7h3 e6f7 h3h7 f7e6
info depth 28 seldepth 50 multipv 1 manypv 0 score cp 0 nodes 172833460 nps 1431653 hashfull 897 tbhits 0 time 120723 pv h7h3 e6f7 h3h7 f7e6
info depth 29 seldepth 50 multipv 1 manypv 1 score cp 0 nodes 174646743 nps 1432998 hashfull 898 tbhits 0 time 121875 pv h7h3 e6f7 h3h7 f7e6
info depth 29 seldepth 50 multipv 1 manypv 2 score cp 0 nodes 176841233 nps 1433735 hashfull 900 tbhits 0 time 123343 pv h7h3 e6f7 h3h7 f7e6
info depth 29 seldepth 50 multipv 1 manypv 3 score cp 0 nodes 177498937 nps 1433605 hashfull 901 tbhits 0 time 123813 pv h7h3 e6f7 h3h7 f7e6
info depth 29 seldepth 50 multipv 1 manypv 3 score cp 0 nodes 182540253 nps 1434974 hashfull 906 tbhits 0 time 127208 pv h7h3 e6f7 h3h7 f7e6
info depth 29 seldepth 50 multipv 1 manypv 3 score cp 0 nodes 210426732 nps 1432585 hashfull 935 tbhits 0 time 146886 pv h7h3 e6f7 h3h7 f7e6
info depth 30 seldepth 50 multipv 1 manypv 0 score cp 0 nodes 213236592 nps 1434497 hashfull 938 tbhits 0 time 148649 pv h7h3 e6f7 h3h7 f7e6
info depth 31 seldepth 50 multipv 1 manypv 1 score cp 0 nodes 216486261 nps 1436404 hashfull 939 tbhits 0 time 150714 pv h7h3 e6f7 h3h7 f7e6
info depth 31 seldepth 70 multipv 1 manypv 2 score cp 372 nodes 539334412 nps 1617932 hashfull 998 tbhits 0 time 333348 pv e4d5 b7d5 d3g6 d5g2 h1g2 d6d5 h7f7 e6d6 f7e8 d8e8 g6e8 d7b7 c2c3 e7d8 e1g1 b7h7 e8g6 h7h8 g6f5 h8f8 f5g4 d8h4 g1f1 f8f1 g2f1 a6a5 f1e2 h4f6 g4f5 e5e4 e3b6 b5b4 b6a5 b4a3 b2a3 d6e5 f5g6 e5f4 a5c7 f4g5
info depth 32 seldepth 70 multipv 1 manypv 0 score cp 379 lowerbound nodes 573872033 nps 1621130 hashfull 998 tbhits 0 time 353995 pv e4d5
info depth 32 seldepth 70 multipv 1 manypv 0 score cp 374 nodes 611591056 nps 1624709 hashfull 998 tbhits 0 time 376431 pv e4d5 b7d5 d3g6 d5g2 h1g2 d6d5 h7f7 e6d6 f7e8 e7h4 e1g1 d8e8 g6e8 d7h7 e8g6 h7h8 c2c3 d6e6 g6c2 h4e7 g1f1 a6a5 c2f5 e6d6 f1d1 h8g8 g2h1 d6c6 f5e6 g8d8 h1g2 b5b4 a3a4 b4c3 b2c3 e5e4 c3c4 d5c4 d1d8 e7d8 e6c4 d8b6 c4b5 c6b7 e3h6 e4e3
info depth 33 seldepth 70 multipv 1 manypv 0 score cp 373 nodes 694137001 nps 1633282 hashfull 999 tbhits 0 time 424995 pv e4d5 b7d5 d3g6 d5g2 h1g2 d6d5 h7f7 e6d6 f7e8 e7h4 e1g1 d8e8 g6e8 d7h7 e8g6 h7h8 c2c3 d6e6 g6c2 h4e7 c2b3 e5e4 g1d1 h8h5 d1f1 h5h8 b3d1 h8g8 g2h1 a6a5 d1h5 g8f8 f1g1 e7f6 h5g4 e6d6 g1f1 f6g5 f1f8 g5e3 h1g2 e3c1 f8f6 d6e5 f6f5 e5e6
bestmove e4d5 ponder b7d5

@lp--
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lp-- commented Jun 7, 2016

Checked also master. It does not have problem finding 24. exd5+ with 1 core

ucinewgame
position fen 3qr3/1b1rb2Q/p2pk1p1/1p1np3/4P3/P2BB3/1PP3PP/4R2K w - - 2 24
go wtime 10000000  btime 1000000

info depth 1 seldepth 2 multipv 1 score cp 91 nodes 92 nps 30666 tbhits 0 time 3 pv e4d5 e6d5 h7g6
info depth 2 seldepth 4 multipv 1 score cp 96 nodes 233 nps 58250 tbhits 0 time 4 pv e4d5 b7d5 h7g6 e7f6
info depth 3 seldepth 5 multipv 1 score cp 49 nodes 702 nps 117000 tbhits 0 time 6 pv e4d5 e6d5 c2c4 d5c6
info depth 4 seldepth 6 multipv 1 score cp 49 nodes 926 nps 154333 tbhits 0 time 6 pv e4d5 e6d5 c2c4 d5c6 c4b5 c6c7 b5a6
info depth 5 seldepth 7 multipv 1 score cp 49 nodes 1317 nps 188142 tbhits 0 time 7 pv e4d5 e6d5 c2c4 d5c6 c4b5 c6c7 b5a6
info depth 6 seldepth 8 multipv 1 score cp 49 nodes 2438 nps 243800 tbhits 0 time 10 pv e4d5 b7d5 h7g6 e7f6 e1f1 d7g7 f1f6 d8f6
info depth 7 seldepth 12 multipv 1 score cp 0 nodes 5976 nps 398400 tbhits 0 time 15 pv h7h3 e6f7 h3h7 f7e6
info depth 8 seldepth 12 multipv 1 score cp 0 nodes 7845 nps 490312 tbhits 0 time 16 pv h7h3 e6f7 h3h7 f7e6
info depth 9 seldepth 12 multipv 1 score cp 0 nodes 13135 nps 656750 tbhits 0 time 20 pv h7h3 e6f7 h3h7 f7e6
info depth 10 seldepth 17 multipv 1 score cp 0 nodes 28056 nps 967448 tbhits 0 time 29 pv h7h3 e6f7 e4d5 e7h4 e1f1 f7g7 h3g4 g6g5 e3b6 d8e7 g4h5 g7g8 h5g6 g8h8 g6h5 h8g8
info depth 11 seldepth 19 multipv 1 score cp 0 nodes 40455 nps 1093378 tbhits 0 time 37 pv h7h3 e6f7 h3h7 f7e6
info depth 12 seldepth 19 multipv 1 score cp 0 nodes 51123 nps 1188906 tbhits 0 time 43 pv h7h3 e6f7 h3h7 f7e6
info depth 13 seldepth 19 multipv 1 score cp 0 nodes 68322 nps 1289094 tbhits 0 time 53 pv h7h3 e6f7 h3h7 f7e6
info depth 14 seldepth 22 multipv 1 score cp 0 nodes 168491 nps 1477991 tbhits 0 time 114 pv h7h3 e6f7 e4d5 e7h4 e1f1 f7g8 d3g6 d7g7 g6e8 b7d5 f1g1 d8e8 h3h4 e8g6 h4d8 g8h7 d8h4 h7g8
info depth 15 seldepth 26 multipv 1 score cp 0 nodes 224815 nps 1529353 tbhits 0 time 147 pv h7h3 e6f7 h3h7 f7e6
info depth 16 seldepth 26 multipv 1 score cp 0 nodes 262837 nps 1555248 tbhits 0 time 169 pv h7h3 e6f7 h3h7 f7e6
info depth 17 seldepth 26 multipv 1 score cp 0 nodes 318696 nps 1593480 tbhits 0 time 200 pv h7h3 e6f7 h3h7 f7e6
info depth 18 seldepth 26 multipv 1 score cp 0 nodes 416919 nps 1622252 tbhits 0 time 257 pv h7h3 e6f7 h3h7 f7e6
info depth 19 seldepth 26 multipv 1 score cp 0 nodes 581181 nps 1618888 tbhits 0 time 359 pv h7h3 e6f7 h3h7 f7e6
info depth 20 seldepth 26 multipv 1 score cp 0 nodes 738008 nps 1621995 tbhits 0 time 455 pv h7h3 e6f7 h3h7 f7e6
info depth 21 seldepth 26 multipv 1 score cp 0 nodes 1070185 nps 1641388 tbhits 0 time 652 pv h7h3 e6f7 h3h7 f7e6
info depth 22 seldepth 26 multipv 1 score cp 0 nodes 1456073 nps 1639721 tbhits 0 time 888 pv h7h3 e6f7 h3h7 f7e6
info depth 23 seldepth 26 multipv 1 score cp 0 nodes 1927673 nps 1650404 hashfull 681 tbhits 0 time 1168 pv h7h3 e6f7 h3h7 f7e6
info depth 24 seldepth 26 multipv 1 score cp 0 nodes 2582394 nps 1662842 hashfull 814 tbhits 0 time 1553 pv h7h3 e6f7 h3h7 f7e6
info depth 25 seldepth 26 multipv 1 score cp 0 nodes 3699270 nps 1663340 hashfull 921 tbhits 0 time 2224 pv h7h3 e6f7 h3h7 f7e6
info depth 26 seldepth 26 multipv 1 score cp 0 nodes 4524869 nps 1664778 hashfull 957 tbhits 0 time 2718 pv h7h3 e6f7 h3h7 f7e6
info depth 27 seldepth 26 multipv 1 score cp 0 nodes 5803961 nps 1643715 hashfull 987 tbhits 0 time 3531 pv h7h3 e6f7 h3h7 f7e6
info depth 28 seldepth 26 multipv 1 score cp 6 lowerbound nodes 10783586 nps 1655193 hashfull 999 tbhits 0 time 6515 pv e4d5
info depth 28 seldepth 26 multipv 1 score cp 13 lowerbound nodes 11454307 nps 1656922 hashfull 999 tbhits 0 time 6913 pv e4d5
info depth 28 seldepth 33 multipv 1 score cp 24 lowerbound nodes 11925769 nps 1660739 hashfull 999 tbhits 0 time 7181 pv e4d5
info depth 28 seldepth 33 multipv 1 score cp 39 lowerbound nodes 12499485 nps 1662165 hashfull 999 tbhits 0 time 7520 pv e4d5
info depth 28 seldepth 33 multipv 1 score cp 59 lowerbound nodes 13349514 nps 1662041 hashfull 999 tbhits 0 time 8032 pv e4d5
info depth 28 seldepth 33 multipv 1 score cp 86 lowerbound nodes 14613247 nps 1664568 hashfull 999 tbhits 0 time 8779 pv e4d5
info depth 28 seldepth 41 multipv 1 score cp 122 lowerbound nodes 18831747 nps 1679157 hashfull 999 tbhits 0 time 11215 pv e4d5
info depth 28 seldepth 41 multipv 1 score cp 168 lowerbound nodes 22759092 nps 1694267 hashfull 999 tbhits 0 time 13433 pv e4d5
info depth 28 seldepth 41 multipv 1 score cp 228 lowerbound nodes 24672295 nps 1695806 hashfull 999 tbhits 0 time 14549 pv e4d5
info depth 28 seldepth 41 multipv 1 score cp 305 lowerbound nodes 28407335 nps 1703077 hashfull 999 tbhits 0 time 16680 pv e4d5
info depth 28 seldepth 49 multipv 1 score cp 346 nodes 48652482 nps 1733379 hashfull 999 tbhits 0 time 28068 pv e4d5 b7d5 d3g6 d5g2 h1g2 d6d5 h7f7 e6d6 f7e8 d8e8 g6e8 d7d8 e8f7 d8f8 e1f1 d5d4 e3d2 e5e4 f1f5 e4e3 d2b4 d6d7 g2f3 e7b4 a3b4 d7e7 f7g6 f8g8 g6h5 g8g1 h2h4 g1d1 f5f4 e7d6 c2c3 d1f1 f3g3 f1g1 g3h2 d4c3 h2g1
info depth 29 seldepth 50 multipv 1 score cp 353 lowerbound nodes 65007995 nps 1755170 hashfull 999 tbhits 0 time 37038 pv e4d5
info depth 29 seldepth 50 multipv 1 score cp 360 lowerbound nodes 73146744 nps 1761383 hashfull 999 tbhits 0 time 41528 pv e4d5
info depth 29 seldepth 51 multipv 1 score cp 357 nodes 84822816 nps 1766001 hashfull 999 tbhits 0 time 48031 pv e4d5 b7d5 d3g6 d5g2 h1g2 d6d5 h7f7 e6d6 f7e8 e7h4 e8d8 d7d8 e1g1 d8g8 g2h1 h4f6 c2c3 a6a5 g1g2 d6c6 g6f7 g8g2 h1g2 b5b4 a3b4 a5b4 f7e8 c6d6 c3b4 d5d4 e3h6 e5e4 g2f2 d6d5 b4b5 d5c5 f2e2 c5c4
info depth 30 seldepth 51 multipv 1 score cp 364 lowerbound nodes 98646073 nps 1767249 hashfull 999 tbhits 0 time 55819 pv e4d5
info depth 30 seldepth 51 multipv 1 score cp 357 upperbound nodes 111088395 nps 1771490 hashfull 999 tbhits 0 time 62709 pv e4d5 b7d5
info depth 30 seldepth 53 multipv 1 score cp 360 nodes 126619769 nps 1775176 hashfull 999 tbhits 0 time 71328 pv e4d5 b7d5 d3g6 d5g2 h1g2 d6d5 h7f7 e6d6 f7e8 e7h4 e8d8 d7d8 e1g1 d8g8 g2h1 h4f6 c2c3 a6a5 g1g2 d6c6 g6f7 g8g2 h1g2 b5b4 a3b4 a5b4 c3c4 d5c4 f7c4 e5e4 b2b3 f6e7 g2f2 e7h4 f2e2 h4f6 h2h3 c6d6 e2d2 f6e7 e3f4 d6c5
info depth 31 seldepth 53 multipv 1 score cp 367 lowerbound nodes 165622705 nps 1777048 hashfull 999 tbhits 0 time 93201 pv e4d5
info depth 31 seldepth 53 multipv 1 score cp 374 lowerbound nodes 193912278 nps 1781741 hashfull 999 tbhits 0 time 108833 pv e4d

@mcostalba
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Closed.

mcostalba added a commit to mcostalba/Stockfish that referenced this issue Jun 11, 2016
@mcostalba
Filter root moves filter before copy to threads
ca14345 
Currently root moves are copied to all teh threads
but are DTZ filtered only in main thread at the
beginning of teh search.

This patch moves the TB filtering before the
copy of root moves fixing issue #679

official-stockfish/Stockfish#679

No bench change.
@IIvec IIvec mentioned this issue Jun 14, 2016
Merged
greentip1 pushed a commit to greentip1/Stockfish that referenced this issue Apr 23, 2018
@IIvec
Merge pull request official-stockfish#679 from IIvec/master
5db0600 
New master
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@mcostalba @rwst @anshulongithub @lp-- @Rocky640 @rohitrajiit