Search found 3080 matches

by Rebel
Fri Apr 23, 2021 9:42 am
Forum: Computer Chess Club: General Topics
Topic: New engine releases & news 2021
Replies: 268
Views: 56230

Re: New engine releases & news 2021

Hi Norman, thanks for the new version, including source code :) I tested 8.0 privately under CEGT conditions. Does it make sense to re-test, i.e. is 8.1 stronger/different/weaker :oops: than 8.0? Or can I use the games from 8.0 for our list? I have no problem to re-test if you think it's better. Th...
by Rebel
Fri Apr 23, 2021 9:05 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: Gambit Tournament, first results available
Replies: 0
Views: 40

Gambit Tournament, first results available

Ratings of chess engines are well established on the known rating lists. Will anything change when we feed engines with only (playable) gambit positions? We carefully created 50 gambit opening positions to find out. With 6 top entries that means 500 games each. First run at 40/2 ccrl style as a warm...
by Rebel
Sat Apr 17, 2021 8:26 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: OpenBench question
Replies: 5
Views: 572

Re: OpenBench question

I shuffled the 1.8 million positions and split them into 18 parts of 100,000. Download - http://rebel13.nl/dump/noob.7z Pick a set, test it sequential. Pick another set, test it sequential and compare if results match better. I did both, first: - 10,000 games random , 10 times divided over 2 PC's. ...
by Rebel
Fri Apr 16, 2021 8:58 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: PST-only Evaluation for MinimalChess 0.4
Replies: 31
Views: 1673

Re: PST-only Evaluation for MinimalChess 0.4

Thanks for your work and for sharing it. It is quite amazing! I'm still not a believer in theory that static PSTs are superior to dynamic algorithmic created PST's, before every search. It is my current goal for my new engine to do tuning of dynamically created PSTs during search by using a portion...
by Rebel
Thu Apr 15, 2021 8:54 pm
Forum: Computer Chess Club: General Topics
Topic: Knowledge Base 1.0
Replies: 9
Views: 567

Re: Knowledge Base 1.0

I think I have about 25 million analyzed Stockfish 13 (opening) positions in EPD format. It looks like this: r2r2k1/ppp1nppp/3p1q2/8/2N1PP2/2P2Q2/PP4PP/R4RK1 b - - bm d5; ce -3; acd 20; 1r2k2r/p1pqbppp/5n2/3p4/8/8/PPP1QPPP/RNB1R1K1 b k - bm O-O; ce 85; acd 20; 2krr3/p1pp2pp/b1pb1n2/R7/2P4P/PqN1B3/1...
by Rebel
Thu Apr 15, 2021 5:51 am
Forum: Computer Chess Club: General Topics
Topic: Knowledge Base 1.0
Replies: 9
Views: 567

Re: Knowledge Base 1.0

Knowledge Base 1.0 is the work of months carefully building a quality Polyglot database with analyzed positions by top engines, mainly by Stockfish 12 and Stockfish 13 covering about 95% of the general opening theory. The estimated total computer time roughly is about 8 years 24/7 single cpu time l...
by Rebel
Thu Apr 15, 2021 5:37 am
Forum: Computer Chess Club: General Topics
Topic: Knowledge Base 1.0
Replies: 9
Views: 567

Re: Knowledge Base 1.0

Wow this is awesome. Is there a way to query this database? I'm not familiar with Polyglot. I'm building a similar database with Stockfish 13 and storing the evaluations in a MongoDB database. This would make a great resource for training neural networks. Maybe consider making it available through ...
by Rebel
Wed Apr 14, 2021 7:30 pm
Forum: Computer Chess Club: General Topics
Topic: Knowledge Base 1.0
Replies: 9
Views: 567

Knowledge Base 1.0

Knowledge Base 1.0 is the work of months carefully building a quality Polyglot database with analyzed positions by top engines, mainly by Stockfish 12 and Stockfish 13 covering about 95% of the general opening theory. The estimated total computer time roughly is about 8 years 24/7 single cpu time l...
by Rebel
Wed Apr 14, 2021 6:26 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: OpenBench question
Replies: 5
Views: 572

Re: OpenBench question

Opening selection is randomly. Which does mean lots of duplicate openings get played in the long run. I have never tested what you proposed. Really you need two sets of tests: 1. First play a set of N games between two engines using the same openings, 5 times. 2. Then play a set of N randomly selec...
by Rebel
Tue Apr 13, 2021 9:38 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: OpenBench question
Replies: 5
Views: 572

Re: OpenBench question

Random seems to me the best option indeed as I noticed that sequential chunks are from the same game. OTOH, since matches are not equal regarding the openings, has it been tried to run the same match of (say) 20,000 games between Ethereal and Rubichess 4-5 times and that the results are about equal?