Search found 279 matches

by JohnWoe
Sat Jan 16, 2021 4:52 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: From Esoteric to Transcendental Chess Programming?
Replies: 5
Views: 491

Re: From Esoteric to Transcendental Chess Programming?

NN are just massive PSQT. The "magic mushroom era" started way earlier testing all kind of +1 Elo crap with massive HW power. Looking at the top programs search functions. The same stuff, same order even same comments as in SF search. That's why I'm not reading any top programs sources. So boring. Y...
by JohnWoe
Sat Jan 16, 2021 4:38 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: 83rd Amateur Series Division 6
Replies: 15
Views: 1141

Re: 83rd Amateur Series Division 6

Great tournament!

Mayhem 2.5 -> 4th place. Good result!
Mayhem improved towards the end as its hashtable started to fill up.

Looking at Mayhem losses I didn't spot any obvious bugs. Which is good. Lots of endgame holes are plugged already.
by JohnWoe
Sat Jan 16, 2021 4:32 pm
Forum: Computer Chess Club: General Topics
Topic: Mayhem NNUE - New NN engine
Replies: 76
Views: 16090

Re: Mayhem NNUE - New NN engine

Mayhem 2.8: https://github.com/SamuraiDangyo/mayhem/releases/tag/v2.8 I decided to release this version as it performs really well in my tests. - More EG code/data. <- Plugging endgames holes. - Speedups. Some C++ magic here and there. - Mayhem w/o NNUE is stronger than "FairyMax 5.0b". Plays horrib...
by JohnWoe
Sun Jan 10, 2021 12:04 am
Forum: Computer Chess Club: General Topics
Topic: Mayhem NNUE - New NN engine
Replies: 76
Views: 16090

Re: Mayhem NNUE - New NN engine

I removed Mayhem 2.7 due to under promotion bug. My apologies :D And released fixed Mayhem 2.71 Release: https://github.com/SamuraiDangyo/mayhem/releases/tag/v2.71 Kicked in some speedups as well. I forgot to mention: Mayhem's evals are now much better. For end users. Mayhem 2.71 should be around 28...
by JohnWoe
Sat Jan 09, 2021 4:54 pm
Forum: Computer Chess Club: General Topics
Topic: Learn by playing, NOT by letting and engine to figure it out.
Replies: 11
Views: 1026

Re: Learn by playing, NOT by letting and engine to figure it out.

Mayhem 2.7 playout vs SF12. 1st Mayhem needs a bit time to see the mate. 1st [Event "Computer Chess Game"] [Site "pc"] [Date "2021.01.09"] [Round "-"] [White "Mayhem 2.7"] [Black "Stockfish 12"] [Result "1-0"] [TimeControl "120+1"] [FEN "k7/8/1K1N4/7p/7N/8/8/8 w - - 0 1"] [SetUp "1"] {--------------...
by JohnWoe
Sat Jan 09, 2021 4:43 pm
Forum: Computer Chess Club: General Topics
Topic: Mayhem NNUE - New NN engine
Replies: 76
Views: 16090

Re: Mayhem NNUE - New NN engine

Mayhem 2.7 released. Should be much much stronger than any other version. Now I test without adjudication. Thanks to Mr. Sylwy's tournament games! Even badly handicapped Mayhem is 70% / 150 Elo stronger than Fruit 2.1. Mayhem 2.7 crushes Hakkapeliitta 3.0 on this Linux box even while badly handicapp...
by JohnWoe
Fri Jan 08, 2021 12:03 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: 83rd Amateur Series Division 6
Replies: 15
Views: 1141

Re: 83rd Amateur Series Division 6

Thank you for testing Mayhem! Nice to see Mayhem playing good games. Especially nice wins against Olithink :lol: These results are pretty much what I got testing Mayhem 2.5 vs Glaurung 2.2. The games were really hard fought and score ~50%. Anyway Mayhem 2.7 is going to be much stronger. It has the m...
by JohnWoe
Wed Jan 06, 2021 12:09 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: My test for Mayhem 2.5-x64-(SF)NNUE
Replies: 3
Views: 414

Re: My test for Mayhem 2.5-x64-(SF)NNUE

Thanks! Now that was bad endgame by Mayhem! Null move related bug. This is where Mayhem lost: Bd8 gets mated. Although the position is hard to play. You need accurate moves. https://syzygy-tables.info/?fen=8/2B5/8/5k2/8/7p/5r2/7K_w_-_-_0_1 Mayhem 2.7 has no problems: It plays Bb8 all the time. Now I...
by JohnWoe
Mon Jan 04, 2021 8:00 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: My test for Mayhem 2.5-x64-(SF)NNUE
Replies: 3
Views: 414

Re: My test for Mayhem 2.5-x64-(SF)NNUE

Thanks for the test! Mayhem v2.5 was in my testing around 50+% Glaurung 2.2 (2820 Elo on CCRL ?). Mayhem with its opening book (+50 Elo ?). So this 2765 Elo is spot on. In v2.6 I adjusted scores a little bit so adjudication is more accurate now. Yes. Mayhem is bad in endgames. It's something I'm gon...
by JohnWoe
Fri Jan 01, 2021 6:11 pm
Forum: Computer Chess Club: General Topics
Topic: Mayhem NNUE - New NN engine
Replies: 76
Views: 16090

Re: Mayhem NNUE - New NN engine

Any *.exe's available to download? I only posted source code as my compiles are a bit slow on this AMD machine. Missing CPU instructions resulting ~50% speed loss. Any idea about the ELO ? Mr. Sylwy tested v0.50 and got around 2790 Elo : http://talkchess.com/forum3/viewtopic.php?f=6&t=75796 I have ...