Search found 53 matches

by No4b
Wed Jan 13, 2021 11:44 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Drofa 2.1.0 64-bit Gauntlet for CCRL 40/15
Replies: 2
Views: 71

Re: Drofa 2.1.0 64-bit Gauntlet for CCRL 40/15

Thank you for testing!

To be honest, it is much higher than i thought (i was thinking it would be ~2550 at best) :D
I guess some of the patches have god scaling at LTC
by No4b
Tue Jan 12, 2021 8:28 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: 83rd Amateur Series Division 7
Replies: 9
Views: 567

Re: 83rd Amateur Series Division 7

Looks like update to 2.1.0 was barely enough to avoid relegation :)

Thanks for the great tournament!
by No4b
Sun Jan 10, 2021 4:28 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Non-quiet position after quiescence...
Replies: 6
Views: 457

Re: Non-quiet position after quiescence...

As it is white-to-move and white have no good capture it makes sense to stop here. I guess its just you overall search depth is low being the problem here. Weak engines are often try to prolong inevitable losses by giving checks and/or trading pieces (as here) during the search. This would be somewh...
by No4b
Mon Jan 04, 2021 1:58 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Testing strategies for my engines playing strength
Replies: 8
Views: 389

Re: Testing strategies for my engines playing strength

At first iterations if you are using well-known techniques (like implementing hashtable, LMR, null move) a few hundred game match between _dev and master version would be enough to confirm that your code is right and will give you rough estimate of how much elo you gained from it. But later in devel...
by No4b
Fri Jan 01, 2021 10:28 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Simplified Stockfish Evaluation
Replies: 2
Views: 432

Re: Simplified Stockfish Evaluation

Great stuff! Keep up your work! =) Despite the fact of the lower win rate the games actually won by SF eval looks like a positional masterpiece, while lost games are mostly forced mate occurred due to unfortunate openings. I wouldnt say that the winrate is necessarily lower. You need at least couple...
by No4b
Thu Dec 24, 2020 1:15 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: OpenBunch & friends tournament
Replies: 1
Views: 191

OpenBunch & friends tournament

I was leaving town for the half of the week, so decided to host some tourney on my PC. Sadly i was unable to compile / find a net for some engines, but overall i suppose it was interesting. Conditions: TC: 15` + 15`` per move. Hardware: each engine 4CPU (AMD Ryzen 5, 3600X), 2GB hash, 5-man syzygy o...
by No4b
Wed Dec 23, 2020 9:45 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Are Aspiration Windows Worthless?
Replies: 40
Views: 2617

Re: Are Aspiration Windows Worthless?

I tried to implement Aspiration windows in Drofa two times, both were unsuccessful. But on the first try i still had TT bug in the engine that made aspiration search very bad (plagued TT with worthless entries basically). In the second try engine searched much less nodes, but still was ~-7 elo. I su...
by No4b
Wed Dec 23, 2020 9:37 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Null move pruning issue
Replies: 7
Views: 496

Re: Null move pruning issue

I think allowing multiple nullmoves in a row may cause the issue here
by No4b
Tue Dec 01, 2020 12:09 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: 82nd Amateur Series Division 8
Replies: 16
Views: 2434

Re: 82nd Amateur Series Division 8

It is really strange. I just checked my file with ~40000 Drofa_dev testgames and it has no single loss by illegal move. I activated logging, and the problem isn't actually illegal moves, but no "bestmove" at all. The error message was a bit ambigous. This happens because the time grows short toward...
by No4b
Tue Dec 01, 2020 8:12 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: 82nd Amateur Series Division 8
Replies: 16
Views: 2434

Re: 82nd Amateur Series Division 8

What does "rules infractions" means exactly? Actually illegal "bestmove", thus losing the game. I dont really understand what you mean by FEN notation The UCI driving GUI or CLI can either use "position startpos moves ..." followed by all the moves in the game, or it can use "position fen ... moves...