Search found 28 matches

by jonkr
Mon May 11, 2020 5:03 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Chess960 / Fischer Random Perft Wiki Results
Replies: 18
Views: 737

Re: Chess960 / Fischer Random Perft Wiki Results

This post was useful to me as it turns out I also wasn't checking for this case (even in 960), and was a quick fix to correct. I guess Stockfish must have a test for this case that's only activated in Chess960 mode, whereas when not in Chess960 mode I assume the castling flags are invalid if rooks a...
by jonkr
Mon May 11, 2020 1:30 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Chess960 / Fischer Random Perft Wiki Results
Replies: 18
Views: 737

Re: Chess960 / Fischer Random Perft Wiki Results

For what it's worth, I tried the first 6 positions in my engine and it always matched the second line (matched the *s) so my guess is that one is correct. (I did find out that I don't automatically assume FRC mode so numbers were different until I did new FRC game due to lacking castling rights, but...
by jonkr
Sat May 09, 2020 12:38 am
Forum: Computer Chess Club: General Topics
Topic: SlowChess Blitz Classic 2.0
Replies: 27
Views: 4273

Re: SlowChess Blitz Classic 2.0

I've managed to compile a Linux version, it's available on the SlowChess webpage now. Some caveats are this version is engine-only for UCI or winboard (no own GUI), and I didn't compile a _noPop at this time. I compiled with g++ & tested it on Ubuntu booted from a USB stick with CuteChessGUI with 30...
by jonkr
Fri May 08, 2020 1:01 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: PST for FRC
Replies: 4
Views: 409

Re: PST for FRC

SlowChess uses the same evaluation for regular chess and FRC. Compared to some similar strength programs it does statistically better in FRC than standard, although against Stockfish 11 FRC didn't help and scored about the same (more testing would be needed to say for sure.) I'm not sure why it woul...
by jonkr
Mon May 04, 2020 9:52 pm
Forum: Computer Chess Club: General Topics
Topic: SlowChess Blitz Classic 2.0
Replies: 27
Views: 4273

Re: SlowChess Blitz Classic 2.0

So far after taking a break I've always gotten curious enough to just start tinkering / experimenting for fun, then eventually something improves play unexpectedly well, or maybe a few changes in a row show clear improvement, and I end up putting more effort into improving rating for a new release, ...
by jonkr
Sat May 02, 2020 1:43 am
Forum: Computer Chess Club: General Topics
Topic: SlowChess Blitz Classic 2.0
Replies: 27
Views: 4273

Re: SlowChess Blitz Classic 2.0

The +65 elo is from 6000 self-play games, so on rating lists my hope somewhere close to +50 elo. I have thought about making a detailed web-page and/or post about the inner-workings of SlowChess, but when I test against Stockfish and see how much SF11 dominates, it always makes me wonder how much re...
by jonkr
Fri May 01, 2020 7:31 pm
Forum: Computer Chess Club: General Topics
Topic: SlowChess Blitz Classic 2.0
Replies: 27
Views: 4273

Re: SlowChess Blitz Classic 2.0

SlowChess Blitz Classic 2.1 is now available at https://www.3dkingdoms.com/chess/slow.htm Changes : More evaluation tuning (+20 elo) Improved search (+45 elo) The biggest impact change was allowing LMR at root, surprisingly tested +15 elo better. More lenient LMR rules (eg. now allowed in-check, and...
by jonkr
Wed Apr 01, 2020 8:41 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Video about Kasparov, being wrong ?
Replies: 4
Views: 454

Re: Video about Kasparov, being wrong ?

From the start of video it looks to me like the King is on H8, so from with this position and couple second analysis in engine I do get Nxh6 as best move.
by jonkr
Sat Mar 28, 2020 8:25 pm
Forum: Computer Chess Club: General Topics
Topic: SlowChess Blitz Classic 2.0
Replies: 27
Views: 4273

Re: SlowChess Blitz Classic 2.0

"C:\Program Files (x86)\cutechess\cutechess-cli" -engine name="Slow 2.0" cmd=slow64.exe dir="C:\Downloads\Engines\SlowChessClassic-2.0" proto=uci -engine conf="Slow WV2.1" -each tc=40/0:20+0.2 -games 10 -concurrency 7 I tried in Cute Chess GUI and it worked for me with the above line. From looking ...
by jonkr
Sat Mar 28, 2020 6:17 pm
Forum: Computer Chess Club: General Topics
Topic: SlowChess Blitz Classic 2.0
Replies: 27
Views: 4273

Re: SlowChess Blitz Classic 2.0

I have a problem with Slowchess Blitz Classic and Cutechess-Cli. After executing the program, a dialog box appears, stating that the opening book could not be loaded. Hi Andreas, The defaults are working for me (I test with cuteChess-GUI / Winboard / Own GUI ), but the things the check to make sure...