Marvin 3.3.0

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Martin
Posts: 20
Joined: Sun Jul 10, 2016 7:12 pm
Location: Lund, Sweden
Full name: Martin Danielsson

Marvin 3.3.0

Post by Martin » Sat Apr 06, 2019 7:10 am

I have just released a new version of Marvin.

1 core: ~30 elo improvement
4 core: ~40 elo improvement

For this release I found the source code of Ethereal and Arasan very helpful when working with improving the tuner. So a thank you to Andrew Grant and Jon Dart is in order. Apart from tuner improvements there are a number of other general code improvements, especially related to move ordering. The biggest contributors to the strength increase are probably due to move ordering improvements and improvements to search depth selection for Lazy SMP.

Finally I would also like to thank all the testers.

Release: https://github.com/bmdanielsson/marvin- ... tag/v3.3.0

Sergio Martinez
Posts: 1738
Joined: Fri Oct 05, 2012 12:35 pm
Location: Spain
Contact:

Re: Marvin 3.3.0

Post by Sergio Martinez » Sat Apr 06, 2019 8:08 am

Thank you very much Martin :)
Member of the CCRL Group. Write me if you want I test your engine.

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Graham Banks
Posts: 32889
Joined: Sun Feb 26, 2006 9:52 am
Location: Auckland, NZ

Re: Marvin 3.3.0

Post by Graham Banks » Sat Apr 06, 2019 8:41 am

Martin wrote:
Sat Apr 06, 2019 7:10 am
I have just released a new version of Marvin.

1 core: ~30 elo improvement
4 core: ~40 elo improvement

Thanks. :)
My email addresses:
gbanksnz at gmail.com
gbanksnz at yahoo.co.nz

Martin
Posts: 20
Joined: Sun Jul 10, 2016 7:12 pm
Location: Lund, Sweden
Full name: Martin Danielsson

Re: Marvin 3.3.0

Post by Martin » Sat Apr 06, 2019 11:41 am

I just found a bug in the UCI commands I send to the GUI. The bug doesn't impact playing strength but GUIs may get confused. An updated version will come soon.

Martin
Posts: 20
Joined: Sun Jul 10, 2016 7:12 pm
Location: Lund, Sweden
Full name: Martin Danielsson

Re: Marvin 3.3.0

Post by Martin » Sat Apr 06, 2019 12:36 pm

A new fixed version, Marvin 3.3.1, is now available.

https://github.com/bmdanielsson/marvin- ... tag/v3.3.1

Gabor Szots
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Location: Szentendre, Hungary
Full name: Gabor Szots

Re: Marvin 3.3.0

Post by Gabor Szots » Sat Apr 06, 2019 8:34 pm

Thank you, Martin.
Gabor Szots
CCRL testing group

Martin
Posts: 20
Joined: Sun Jul 10, 2016 7:12 pm
Location: Lund, Sweden
Full name: Martin Danielsson

Re: Marvin 3.3.0

Post by Martin » Tue Apr 16, 2019 5:30 pm

I have just done a second bug fix release, Marvin 3.3.2. This release fixes an issue where Marvin would sometimes fail to win in a
mate-in-x position.

Thanks to the user NajdorfB on GitHub for reporting the issue.

Damir
Posts: 2102
Joined: Mon Feb 11, 2008 2:53 pm

Re: Marvin 3.3.0

Post by Damir » Tue Apr 16, 2019 6:33 pm

Tak Martin. Har Du en anelse hvor stærk Marvin er elomæssigt ? :) :) :D

Martin
Posts: 20
Joined: Sun Jul 10, 2016 7:12 pm
Location: Lund, Sweden
Full name: Martin Danielsson

Re: Marvin 3.3.0

Post by Martin » Tue Apr 16, 2019 8:26 pm

Ingen har testat senaste releasen än, men jag gissar på ~2960 med 4 kärnor.

Elorejano
Posts: 96
Joined: Sat Mar 20, 2010 2:31 am

Re: Marvin 3.3.0

Post by Elorejano » Wed Apr 17, 2019 5:51 pm

Hi!
Theres another issue. Marvin dont read properly polyglots books. In five or six moves kept out of book when theres a lot of moves
availables.
Thanks for your engine

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