Search found 33 matches

by Martin
Tue Jan 12, 2021 5:45 pm
Forum: Computer Chess Club: General Topics
Topic: Marvin 5.0.0
Replies: 6
Views: 630

Marvin 5.0.0

Marvin 5.0.0 is now available. The big change in this release is the switch to NNUE based evaluation. In my tests it is about 60 elo stronger compared to the previous version. A default network file is included in the binary package. Just put the file in the same directory as the executable and it s...
by Martin
Thu Nov 19, 2020 4:51 pm
Forum: Computer Chess Club: General Topics
Topic: Marvin 4.0.1
Replies: 1
Views: 773

Marvin 4.0.1

This is a bug fix release that fixes a few annoying issues. Depending on time control it may be a few elo stronger or a few elo weaker compared to 4.0.0. For rating lists I don't see a need to test this release if you have already tested 4.0.0. Change: * Reverted time management changes introduced i...
by Martin
Wed Nov 11, 2020 3:53 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Pytorch NNUE training
Replies: 61
Views: 11424

Re: Pytorch NNUE training

Maybe I am missing something but this script generates the fen position in the output file, right? I'm looking at write_position method. I think my question is what is the format of the bin file used for training? I guess I can figure it out from the data loader, but wondering if there's something ...
by Martin
Tue Nov 10, 2020 5:18 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Pytorch NNUE training
Replies: 61
Views: 11424

Re: Pytorch NNUE training

I have a question, from what I understood this trainer loads the data from binary files, how do you generate those files? using nodchip's SF trainer code? The output is generated in a format for SF. If I want to use in my engine would have to port it, right? If you want to generate training data in...
by Martin
Sat Oct 17, 2020 6:02 am
Forum: Computer Chess Club: General Topics
Topic: Marvin 4.0.0
Replies: 9
Views: 2047

Re: Marvin 4.0.0

Yes, the next version of Marvin will use NNUE. The NNUE version will play in the upcoming TCEC Cup 7.
by Martin
Tue Oct 13, 2020 5:31 pm
Forum: Computer Chess Club: General Topics
Topic: 14th ACCA World Computer Rapid Chess Championships
Replies: 44
Views: 11849

Re: 14th ACCA World Computer Rapid Chess Championships

14-15 of November doesn't work for me. All other dates are fine.


/Martin
by Martin
Sat Aug 29, 2020 10:50 am
Forum: Computer Chess Club: General Topics
Topic: Marvin 4.0.0
Replies: 9
Views: 2047

Re: Marvin 4.0.0

I had massive problems with Fischer time control I am using, 20 minutes per game and 5 seconds per move. Marvin used to much time from the 20 minutes for the first moves and lost some games in late middlegame without to have enough time (the 5 seconds only). I read on your site that you improved th...
by Martin
Sat Aug 29, 2020 8:17 am
Forum: Computer Chess Club: General Topics
Topic: Marvin 4.0.0
Replies: 9
Views: 2047

Re: Marvin 4.0.0

The RESIGN feature has not been there for a long time. It was removed already for the 2.0.0 release.
by Martin
Sat Aug 29, 2020 6:50 am
Forum: Computer Chess Club: General Topics
Topic: Marvin 4.0.0
Replies: 9
Views: 2047

Marvin 4.0.0

Marvin 4.0.0 is now available. It is the same version as the one that played in TCEC S19. Based on my test gauntlets it's about 45 elo stronger than the previous version. Release Notes MultiPV support Improved LMR formula Evaluation of tempo Switched to using only one slot for killer moves Fixed iss...
by Martin
Tue Jul 28, 2020 6:47 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Marvin 3.6.0 64-bit Gauntlet for CCRL 40/15
Replies: 2
Views: 727

Re: Marvin 3.6.0 64-bit Gauntlet for CCRL 40/15

Thank you for testing! Finally Marvin is above 3000.

/Martin