GNU Chess 5.50

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

Moderator: Ras

Michel
Posts: 2292
Joined: Mon Sep 29, 2008 1:50 am

GNU Chess 5.50

Post by Michel »

Sorry for the spam. This release was originally announced as 5.07.175b in the programmers forum but it was suggested that I bump the version number
and repost it here.

http://hardy.uhasselt.be/Toga/gnuchess-release/

According to my testing GNU Chess 5.50 is about 120 elo (+-20) stronger than Fruit 2.1 at 40/4 time control, 128Mb hash.

I think it is a good milestone since it is the first GNU Chess 5 which is substantially stronger than GNU Chess 6.
Modern Times
Posts: 3758
Joined: Thu Jun 07, 2012 11:02 pm

Re: GNU Chess 5.50

Post by Modern Times »

How much stronger is it than GNU Chess 5.07.173b ?
Michel
Posts: 2292
Joined: Mon Sep 29, 2008 1:50 am

Re: GNU Chess 5.50

Post by Michel »

How much stronger is it than GNU Chess 5.07.173b ?
I did not really measure this.
But 5.07.173b is 2603 at the CCRL (40/4) and Fruit 2.1 is 2687. So if my measurement of the difference between Fruit 2.1 and 5.50 is correct then the difference between 5.07.173b and 5.50 should be about 200 elo.

This is just an estimate as there are huge error bars everywhere. In particular
this estimate would contradict somewhat the fact that 5.50 is weaker than Glaurung 2.2.
Modern Times
Posts: 3758
Joined: Thu Jun 07, 2012 11:02 pm

Re: GNU Chess 5.50

Post by Modern Times »

OK thanks, well I will run it at chess960 and find out, assuming it still plays that.
Michel
Posts: 2292
Joined: Mon Sep 29, 2008 1:50 am

Re: GNU Chess 5.50

Post by Michel »

Thanks!

Michel.
Modern Times
Posts: 3758
Joined: Thu Jun 07, 2012 11:02 pm

Re: GNU Chess 5.50

Post by Modern Times »

Michel wrote:
How much stronger is it than GNU Chess 5.07.173b ?
I did not really measure this.
But 5.07.173b is 2603 at the CCRL (40/4) and Fruit 2.1 is 2687. So if my measurement of the difference between Fruit 2.1 and 5.50 is correct then the difference between 5.07.173b and 5.50 should be about 200 elo.
After the first 600 chess960 games, that is about right. Many more games to go though.

http://computerchess.org.uk/ccrl/404FRC/
Michel
Posts: 2292
Joined: Mon Sep 29, 2008 1:50 am

Re: GNU Chess 5.50

Post by Michel »

Thanks a lot!

Michel