Search found 8191 matches

by Dann Corbit
Sat Aug 17, 2019 2:55 am
Forum: Computer Chess Club: General Topics
Topic: Crystal
Replies: 12
Views: 595

Re: Crystal

Here is my version: https://drive.google.com/open?id=1xEqAsNCsVbUw7hr-5oIA5EMqEaN2D_0y Unfortunately, I make some changes for my own purposes. You can figure them out with diff. If you want to use this version, you will probably want to turn off writing the analysis to disk UCI logging option. There...
by Dann Corbit
Fri Aug 16, 2019 6:08 pm
Forum: Computer Chess Club: General Topics
Topic: Crystal
Replies: 12
Views: 595

Re: Crystal

Did you try using the makefile?
by Dann Corbit
Fri Aug 16, 2019 1:31 am
Forum: Computer Chess Club: General Topics
Topic: Crystal
Replies: 12
Views: 595

Re: Crystal

I gave it a spin on some recent positions and it seems to have performed very well. Searching: 1N1n4/2BPbpPb/3r1p2/2p1kP2/2p1p1P1/2p1P2K/p1P3RP/3R1N1q w - - 0 1 infinite: 0 time: 0 increment: 0 moves to go: 0 1 -2.43 00:00 4932 Bxd6+ Bxd6 2 +0.00 00:00 82869 Rg3 Bg8 3 +2.58 00:00 123949 Na6 a1=Q Rxa...
by Dann Corbit
Thu Aug 15, 2019 10:17 pm
Forum: Computer Chess Club: General Topics
Topic: Three Test positions from Larsen, Euwe and Gufeld!
Replies: 12
Views: 1226

Re: Three Test positions from Larsen, Euwe and Gufeld!

Vinvin wrote:
Thu Aug 15, 2019 8:44 pm
Position 3 still interesting :
rnb2r2/3pppkp/p5p1/qPpQ4/P1P1n3/4PN2/4KPPP/RN3B1R w - - 0 12
Wasn't that position black to move previously?
by Dann Corbit
Thu Aug 15, 2019 9:19 pm
Forum: Computer Chess Club: General Topics
Topic: Test Position: Baburin-Adianto, Liechtenstein 1993
Replies: 12
Views: 794

Re: Test Position: Baburin-Adianto, Liechtenstein 1993

I see mate in 12 at depth 25 with cfish: q1r1k2r/1b3pp1/p3p3/P1b5/1pN1P3/3BBPp1/1P2Q1P1/R4RK1 b k - info depth 25 seldepth 25 multipv 1 score mate 12 nodes 127569780 nps 9248878 hashfull 41 tbhits 2 time 13793 pv e8e7 e2d2 c5e3 f1f2 e3d2 c4b6 a8b8 a1d1 c8c1 d1c1 b8f4 b6d5 e6d5 c1c7 f4c7 e4d5 c7c1 d3...
by Dann Corbit
Thu Aug 15, 2019 7:35 pm
Forum: Computer Chess Club: General Topics
Topic: Nh4 is hard to find, but the stats will tell you it is right
Replies: 12
Views: 1389

Re: Nh4 is hard to find, but the stats will tell you it is right

Vinvin wrote:
Thu Aug 15, 2019 6:36 pm

Is this position valid today ?
Nh4 is no more the strongest move for SF (3 best moves after 1 hour on 6 cores) :
That is a good question.
I found it statistically (Nh4 won far more games than the other moves).
But maybe there is a flaw in the plan that deeper searches find.

I will examine it.
by Dann Corbit
Wed Aug 14, 2019 9:25 pm
Forum: Computer Chess Club: General Topics
Topic: SCCT Noob book, Rc5 improvement
Replies: 0
Views: 82

SCCT Noob book, Rc5 improvement

This position from Sedat's latest tournament came from the book NooB: 4r1r1/pp3q1k/6pp/1p2Pp2/3PpPP1/P1R4P/4Q2K/2R5 w - - Move played was d5, and the result was a draw. But the move Rc5 wins the game. 4r1r1/pp3q1k/6pp/1p2Pp2/3PpPP1/P1R4P/4Q2K/2R5 w - - acd 36; acs 509; bm Rc5; ce 337; pm Rc5; pv Rc5...
by Dann Corbit
Wed Aug 14, 2019 9:16 pm
Forum: Computer Chess Club: General Topics
Topic: Crystal
Replies: 12
Views: 595

Re: Crystal

Maybe you used multiple threads for the search? I get this with 11 threads: =========================== Total time (ms) : 2858 Nodes searched : 30682706 Nodes/second : 10735726 Invoked with: DCorbit@DCORBIT MINGW64 /f/project/dcorbit/Stockfish-crystal/src $ ./crystal-g64.exe bench 16384 11 > /dev/null
by Dann Corbit
Wed Aug 14, 2019 9:14 pm
Forum: Computer Chess Club: General Topics
Topic: Crystal
Replies: 12
Views: 595

Re: Crystal

I got the right node count:
===========================
Total time (ms) : 4509
Nodes searched : 7215170
Nodes/second : 1600170

$ g++ --version
g++.exe (Rev1, Built by MSYS2 project) 9.2.0
by Dann Corbit
Wed Aug 14, 2019 5:15 am
Forum: Computer Chess Club: General Topics
Topic: Out of the Kai 450 positions, 99 not found by SF
Replies: 65
Views: 1708

Re: Out of the Kai 450 positions, 99 not found by SF

As far as how do engines improve opening theory, consider these contests by Sedat: https://sites.google.com/site/computerschess/scct-book-cs-29 The top books are heavily computer influenced. I guess that the "noob" book is based.on.the 20 ply Stockfish data but I just guess that by the name. Of cour...