Search found 804 matches

by Joerg Oster
Fri Mar 19, 2021 2:47 pm
Forum: Computer Chess Club: General Topics
Topic: SPCC: Web-Host hit by a fire
Replies: 16
Views: 2906

Re: SPCC: Web-Host hit by a fire

Your work is absolutely indispensable. I certainly hope it can be revived. Thank you! Of course my work continues...If my website can not be restored, I will build a new one (but hopefully, the old website will be restored in 1-2 weeks...) Beside of these problems, my testings continue and the resu...
by Joerg Oster
Sat Jan 30, 2021 10:47 am
Forum: Computer Chess Club: General Topics
Topic: Laskas parameter optimizer
Replies: 30
Views: 6063

Re: Laskas parameter optimizer

Ferdy wrote:
Sat Jan 30, 2021 10:34 am
Patrice Duhamel wrote:
Sat Jan 30, 2021 10:01 am
Ferdy wrote:
Fri Jan 29, 2021 7:21 pm
lakas.py v0.18.0 is now released.
Thanks, I will try it, with more games.
There is lakas v0.21.0, this one uses the latest nevergrad v0.4.3.

Update your nevergrad with:

Code: Select all

pip install -U nevergrad
Thanks again!
by Joerg Oster
Wed Jan 27, 2021 3:01 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: UCI Controller Obligations
Replies: 14
Views: 2550

Re: UCI Controller Obligations

But a null move is not a 'no move'. Stockfish outputs 'none' in this case. Sending 'none' is non-compliant for sure. Sending 0000 is at least a move format defined in the specs. I don't really see the logic that a null move is not a 'no move'. It is certainly not a move; it doesn't move anything. T...
by Joerg Oster
Wed Jan 27, 2021 9:24 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: UCI Controller Obligations
Replies: 14
Views: 2550

Re: UCI Controller Obligations

But that's a null move, isn't it? Correct, and using that as bestmove is the only way a UCI engine can say "I'm done with calculating, but I don't have a move". I can't think of another situation why the engine would send a nullmove. I agree. But a null move is not a 'no move'. Stockfish outputs 'n...
by Joerg Oster
Wed Jan 27, 2021 9:06 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: UCI Controller Obligations
Replies: 14
Views: 2550

Re: UCI Controller Obligations

At what point is the engine or the GUI responsible for enforcing chess rules such as 3 fold repetition, 50 moves, stalemate, etc? Always the GUI. Looks like the info block does have mate 1 to signify a mate. A mate-in-1, which means mate in the next move - not for a board position that is checkmate...
by Joerg Oster
Wed Jan 20, 2021 9:48 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Stockfish hangs
Replies: 30
Views: 4837

Re: Stockfish hangs

So why would they need significant time after ucinewgame, then? I'm too lazy to look up SF's source. In my engine, I'm clearing history and hashtables. The latter can take a significant amount of time with large hashtables in relation to short time controls like one second per game without incremen...
by Joerg Oster
Tue Jan 19, 2021 8:32 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Stockfish hangs
Replies: 30
Views: 4837

Re: Stockfish hangs

Thanks for checking it out. The Ponder-on-off madness is a legacy of the WinBoard kludge to cater to some non-compliant engines, for whch the ponder-off command ('easy' in CECP) was a toggle. It shouldn't be harmful, though. Many Shogi engines crash instantly when you send wtime before btime. So I ...
by Joerg Oster
Tue Jan 19, 2021 10:23 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Stockfish hangs
Replies: 30
Views: 4837

Re: Stockfish hangs

I got a complaint that Stockfish forfeited on time in WinBoard. But looking at the debug log suggest that Stockfish is in error here. An excerpt: StartChildProcess (dir=".") UCI2WB debug -nice 10 -kill 1 -c "stockfish_21011322_x64_modern.exe" "C:\WinBoard-4.6.2\Engines\stockfish_21011322_x64_modern...
by Joerg Oster
Sun Jan 17, 2021 10:22 am
Forum: Computer Chess Club: General Topics
Topic: Fun Mate in 2
Replies: 7
Views: 1290

Re: Fun Mate in 2

This website has puzzles from time to time. Enjoyed this one. https://www.futilitycloset.com/2021/01/16/black-and-white-260/ https://www.futilitycloset.com/wp-content/uploads/2021/01/2021-01-16-black-and-white.png Wow, good one! Black still has 22 choices of answers to solution. :) Thanks for that ...
by Joerg Oster
Thu Jan 07, 2021 5:10 pm
Forum: Computer Chess Club: General Topics
Topic: Laskas parameter optimizer
Replies: 30
Views: 6063

Re: Lakas parameter optimizer

Run an optimization combining search and evaluation parameters with promising result. Will you give them a try at Fishtest? What should I do, I am not familiar with Fishtest. Fork the official repo. https://github.com/official-stockfish/Stockfish Create a new branch with your changes. Create an acc...