Marvin 4.0.0

Discussion of anything and everything relating to chess playing software and machines.

Moderators: Harvey Williamson, bob, hgm

Forum rules
This textbox is used to restore diagrams posted with the [d] tag before the upgrade.
Post Reply
Martin
Posts: 29
Joined: Sun Jul 10, 2016 7:12 pm
Location: Lund, Sweden
Full name: Martin Danielsson

Marvin 4.0.0

Post by Martin » Sat Aug 29, 2020 6:50 am

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 issues with with ordering of promotion moves
Use PGO for builds

Binaries: https://github.com/bmdanielsson/marvin- ... tag/v4.0.0

Gabor Szots
Posts: 623
Joined: Sat Jul 21, 2018 5:43 am
Location: Szentendre, Hungary
Full name: Gabor Szots

Re: Marvin 4.0.0

Post by Gabor Szots » Sat Aug 29, 2020 7:41 am

Thank you Martin.

I don't see resign in the ini file nor have I found a resign string in the executable, does it mean you have removed that feature? At least my current ini file for version 3.6.0 does have a line RESIGN=6:700.
Gabor Szots
CCRL testing group

Martin
Posts: 29
Joined: Sun Jul 10, 2016 7:12 pm
Location: Lund, Sweden
Full name: Martin Danielsson

Re: Marvin 4.0.0

Post by Martin » Sat Aug 29, 2020 8:17 am

The RESIGN feature has not been there for a long time. It was removed already for the 2.0.0 release.

Frank Quisinsky
Posts: 5162
Joined: Wed Nov 18, 2009 6:16 pm
Location: Trier, Germany
Contact:

Re: Marvin 4.0.0

Post by Frank Quisinsky » Sat Aug 29, 2020 9:27 am

Hi Martin,

at first, thanks for Marvin!
I have the biggest interest to test your engine for the next FCP Tourney-2021.
I try it out for the FCP Tourney-2020.

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 the time management for version 3.6.0. Not sure, maybe if you made here changes again for version 4.0.0?

Again, have thanks for Marvin and maybe you have time to check that.

Best
Frank
I like computer chess!

Martin
Posts: 29
Joined: Sun Jul 10, 2016 7:12 pm
Location: Lund, Sweden
Full name: Martin Danielsson

Re: Marvin 4.0.0

Post by Martin » Sat Aug 29, 2020 10:50 am

Frank Quisinsky wrote:
Sat Aug 29, 2020 9:27 am
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 the time management for version 3.6.0. Not sure, maybe if you made here changes again for version 4.0.0?
Hi Frank,

Thank you for reporting this. For 4.0.0 I fixed an issue for time controls without increments, but this will not solve the issue you're seeing with Fischer time controls. I tested the time management changes in 3.6.0 a lot but only at very fast time controls. Could be that there is an issue at longer time controls. I'll investigate this for the next release.

Regards
/Martin

Jamal Bubker
Posts: 313
Joined: Mon May 24, 2010 2:32 pm

Re: Marvin 4.0.0

Post by Jamal Bubker » Sun Aug 30, 2020 10:53 am

Thank you Martin!

Madeleine Birchfield
Posts: 76
Joined: Tue Sep 29, 2020 2:29 pm
Location: Dublin, Ireland
Full name: Madeleine Birchfield

Re: Marvin 4.0.0

Post by Madeleine Birchfield » Fri Oct 16, 2020 10:42 pm

Is it true that Marvin now uses NNUE?

Gary Internet
Posts: 60
Joined: Thu Jan 04, 2018 6:09 pm

Re: Marvin 4.0.0

Post by Gary Internet » Sat Oct 17, 2020 5:49 am

Madeleine Birchfield wrote:
Fri Oct 16, 2020 10:42 pm
Is it true that Marvin now uses NNUE?
If you click on the link in Martin's signature it will take you to the GitHub page of Marvin. One more click away, if you click where it currently says "305 commits" is this page - https://github.com/bmdanielsson/marvin- ... its/master.

From what I can see see there the answer to your question is yes, straight out of Cfish.

Martin
Posts: 29
Joined: Sun Jul 10, 2016 7:12 pm
Location: Lund, Sweden
Full name: Martin Danielsson

Re: Marvin 4.0.0

Post by Martin » Sat Oct 17, 2020 6:02 am

Yes, the next version of Marvin will use NNUE. The NNUE version will play in the upcoming TCEC Cup 7.

Frank Quisinsky
Posts: 5162
Joined: Wed Nov 18, 2009 6:16 pm
Location: Trier, Germany
Contact:

Re: Marvin 4.0.0

Post by Frank Quisinsky » Sun Oct 18, 2020 7:10 am

Good news!
So the next release from Marvin can start for my next FCP Tourney.
But for the moment the old FCP Toruney 2020 will be still running for the next 42 days (before ending).

Good luck with Marvin and your next release!!

Best
Frank
I like computer chess!

Post Reply