Search found 678 matches

by Joerg Oster
Thu Nov 14, 2019 7:00 am
Forum: Computer Chess Club: General Topics
Topic: Fritz 17
Replies: 253
Views: 15910

Re: Fritz 17

Why would you need to buy one ? Long answer: This is unrelated to Fat Fritz, Stockfish has been #1 chess engine for years, and it has been free, yet people keepe buying other commercial chess engines like Komodo or Fritz. They need to buy it because others need to sell them. My computer is 9 years ...
by Joerg Oster
Thu Nov 07, 2019 10:55 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish with and without contempt
Replies: 36
Views: 1462

Re: Stockfish with and without contempt

based on what I see, I no reason not to use SF contempt scoring in analysis, but I understand people have their own reasons and that's fine, it is certainly not my way or the highway ;>) - also , note - that SF contempt code is symmetrical ... Are you sure, Mike? To me it looks like Contempt breaks...
by Joerg Oster
Thu Nov 07, 2019 5:50 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish with and without contempt
Replies: 36
Views: 1462

Re: Stockfish with and without contempt

based on what I see, I no reason not to use SF contempt scoring in analysis, but I understand people have their own reasons and that's fine, it is certainly not my way or the highway ;>) - also , note - that SF contempt code is symmetrical ... Are you sure, Mike? To me it looks like Contempt breaks...
by Joerg Oster
Thu Nov 07, 2019 3:09 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish with and without contempt
Replies: 36
Views: 1462

Re: Stockfish with and without contempt

based on what I see, I no reason not to use SF contempt scoring in analysis, but I understand people have their own reasons and that's fine, it is certainly not my way or the highway ;>) - also , note - that SF contempt code is symmetrical ... Are you sure, Mike? To me it looks like Contempt breaks...
by Joerg Oster
Sat Oct 26, 2019 9:08 pm
Forum: Computer Chess Club: General Topics
Topic: starting to build 50 move rule test suite
Replies: 12
Views: 564

Re: starting to build 50 move rule test suite

Hmm, I think Qc6 is the only winning move. So giving a draw score for it seems wrong. uciok setoption name MultiPV value 3 setoption name SyzygyPath value xxxxx/xxxxx/syzygy-5men info string Found 145 tablebases ucinewgame info string Found 145 tablebases isready readyok position fen 5k2/5r2/4Q3/6K1...
by Joerg Oster
Wed Oct 09, 2019 2:19 pm
Forum: Computer Chess Club: General Topics
Topic: Scorpio 3.0.2
Replies: 41
Views: 10742

Re: Scorpio 3.0.2

Hi Daniel, installation of Scorpio 3.0.3 seems to have worked flawlessly. C:\Users\xxxxxx\Scorpio\Scorpio-37-14\bin\Windows>scorpio feature done=0 Number of cores 4 of 4 ht 4194304 X 16 = 64.0 MB eht 524288 X 8 = 8.0 MB pht 32768 X 24 = 0.8 MB treeht 41943040 X 320 = 12800.0 MB processors [128] Egbb...
by Joerg Oster
Mon Sep 23, 2019 4:39 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Syzygy DTZ data explaination?
Replies: 9
Views: 2436

Re: Syzygy DTZ data explaination?

I guess you want to rank the moves strictly by their dtz values. Almost! My purpose is to explain for a given endgame why this move should be made but not others. I lost when following your code for a while. Do you get information to rank all moves at once (query one) or do you make-query one by on...
by Joerg Oster
Mon Sep 23, 2019 3:56 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Syzygy DTZ data explaination?
Replies: 9
Views: 2436

Re: Syzygy DTZ data explaination?

I guess you want to rank the moves strictly by their dtz values. This is what I do here https://github.com/joergoster/Stockfish/commit/56d5abea0a87f66efae2f5bf93376f3181ef95fb in a stockfish branch to build a mating sequence. This is what I get with your position: position fen K7/8/2R5/8/8/8/8/7k w ...
by Joerg Oster
Wed Sep 11, 2019 8:25 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: New Tool for Tuning with Skopt
Replies: 60
Views: 8524

Re: New Tool for Tuning with Skopt

After trying this script a little on some search parameter I am not in success. Any advice will be welcome about choosing the good script configuration and a reasonable number of games. For now, 1000 games to tune 4 or 5 parameters at a time seems not good. People have had some problems with skopt ...
by Joerg Oster
Mon Sep 02, 2019 1:12 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: New Tool for Tuning with Skopt
Replies: 60
Views: 8524

Re: New Tool for Tuning with Skopt

It's a nice project, but i had issues: - ahash from log file should not consider number of games and even concurrency, that way would be easy to run a 200 game session run using 100 games from previous run. - Let me use options that are not seen as UCI options, i don't wanna to expose all possible ...