Search found 379 matches

by JohnWoe
Fri Jul 30, 2021 10:19 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: FRC Tournament (6th Edition)
Replies: 10
Views: 275

Re: FRC Tournament (6th Edition)

Thanks for testing.
Mayhem 4.8 and 5.0 indeed has FRC bugs ( for black )

I recommend Mayhem 5.1. I expect no problems. But will see :lol:
by JohnWoe
Fri Jul 30, 2021 10:16 am
Forum: Computer Chess Club: General Topics
Topic: New engine releases & news 2021
Replies: 534
Views: 195481

Re: New engine releases & news 2021

Already retired from CC. But since Mayhem did have FRC bugs. Thanks to Carlos pointing it out! I release Mayhem 5.1. A mistake in fen handling ... My bad ! Expecting +16 ELO Release: https://github.com/SamuraiDangyo/mayhem/releases/tag/v5.1 This time tested thoroughly. No time losses / illegal moves...
by JohnWoe
Fri Jun 18, 2021 6:51 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Opening book implementation questions
Replies: 10
Views: 4149

Re: Opening book implementation questions

PolyGlot book uses 64b hash/16bit move/... So 128bit per entry. Learn/score is useless. I would prefer tighter 96b format... For bigger boards 16bit per move isn't even enough. The book is sorted so it can be read fast w/ binary search algo. 1B entries is just 30 steps... I use PolyGlot in Mayhem si...
by JohnWoe
Fri Jun 18, 2021 6:42 pm
Forum: Computer Chess Club: General Topics
Topic: will Tcec allow Stockfish with a Leela net to play?
Replies: 92
Views: 12530

Re: will Tcec allow Stockfish with a Leela net to play?

Mayhem has at least own net "nn-cb80fb9393af.nnue". I use the same naming scheme as in SF "sha256sum | head -c 12" I generated that net 3 months ago. Not interested in these 45MB nets. That net is not from Mayhem data so not unique. I have only touched the Probing code very lightly so it doesn't lee...
by JohnWoe
Thu Jun 17, 2021 11:43 am
Forum: Computer Chess Club: General Topics
Topic: Show me another underpromotion great game !
Replies: 7
Views: 2042

Re: Show me another underpromotion great game !

Mayhem 5.0 underpromotes ( 71. c8=N ) Then sacks the N and went to checkmate KQvkb. :lol: Mayhem has knowledge about these endgames. That's not an underpromotion because the knight does something special. The engine just sees that, if it promotes to a queen, the opponent will immediately take it be...
by JohnWoe
Wed Jun 16, 2021 10:42 am
Forum: Computer Chess Club: General Topics
Topic: Show me another underpromotion great game !
Replies: 7
Views: 2042

Re: Show me another underpromotion great game !

Mayhem 5.0 underpromotes ( 71. c8=N ) Then sacks the N and went to checkmate KQvkb. :lol: Mayhem has knowledge about these endgames. [Event "?"] [Site "?"] [Date "?"] [Round "1.78"] [White "Mayhem 5.0"] [Black "Demolito 2021-03-28"] [Result "1-0"] [Termination "checkmate"] [PlyCount "205"] [FEN "r1b...
by JohnWoe
Sat Jun 12, 2021 8:25 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Advice on optimizing my move generation
Replies: 34
Views: 5710

Re: Advice on optimizing my move generation

UCI has tons of overhead too. You are starting from "tabula rasa" every move and playing a long list of moves to empty board... This doesn't take any measurable amount of time. Even my slow move generator plus move/undo plus legality verification gets to 20M NPS in perft (no TT, no bulk counting). ...
by JohnWoe
Sat Jun 12, 2021 9:35 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Advice on optimizing my move generation
Replies: 34
Views: 5710

Re: Advice on optimizing my move generation

Perft to me is pointless. Mayhem has no perft and never will. Havoc has it but it's probably going to removed. I can't even remember the time Mayhem had mgen bugs. How super fast move generator translates to search speed is very important. Especially in Mayhem I want a list of moves ASAP. If you mak...
by JohnWoe
Sat Jun 12, 2021 9:16 am
Forum: Computer Chess Club: General Topics
Topic: Mayhem NNUE - New NN engine
Replies: 119
Views: 62379

Re: Mayhem NNUE - New NN engine

Thanks! 3081 Elo! Excellent results. Recent developments has been just perfecting the Mayhem code base. Checked through the games. Pretty much what I expected. Demolito is obviously super strong. Some nice movements by Mayhem 5.0! [Event "?"] [Site "?"] [Date "?"] [Round "1.294"] [White "Mayhem 5.0"...
by JohnWoe
Wed Jun 09, 2021 8:51 pm
Forum: Computer Chess Club: General Topics
Topic: Mayhem NNUE - New NN engine
Replies: 119
Views: 62379

Re: Mayhem NNUE - New NN engine

Build the binary and they will come ...

Mayhem 4.8: https://github.com/SamuraiDangyo/mayhem ... s/tag/v4.8
4.8 is just a little bit faster than 4.7. Probably a few +Elo.