Myrddin 0.84 release

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JVMerlino
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Myrddin 0.84 release

Post by JVMerlino » Mon Sep 20, 2010 2:48 am

Greetings,

Myrddin 0.84 is now officially released. The engine now plays around 2050 ELO, which is an improvement of about 50 points over the previous version released seven months ago. This is also the first version to support the Gaviota tablebases and be compiled by Jim Ablett.

Many thanks to all who assisted in its development and testing, and especially to Ron Murawski, who generously hosts Myrddin's site at:

http://computer-chess.org/doku.php?id=c ... ddin:index

Enjoy!

jm

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Graham Banks
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Re: Myrddin 0.84 release

Post by Graham Banks » Mon Sep 20, 2010 3:02 am

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

swami
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Re: Myrddin 0.84 release

Post by swami » Mon Sep 20, 2010 6:21 am

Thanks, nice to know that the engine is making a good progress and recent versions certainly seem to be doing better in STS.

Best regards,
Swami

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JVMerlino
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Re: Myrddin 0.84 release

Post by JVMerlino » Mon Sep 20, 2010 11:46 pm

Hi Swami,

Because I use GradualTest to run my test suites, I can't use the STS Stat program on your website. So I wrote a little program, called GTScan, to scan the EPD output from GradualTest and produce a score. I can send it to you if you are interested.

There may even be some corner cases in which it does not agree with STS Stat, so if you could find the time to do a little bit of comparative testing it would be very much appreciated.

Many thanks,
jm

swami
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Re: Myrddin 0.84 release

Post by swami » Tue Sep 21, 2010 2:19 am

JVMerlino wrote:Hi Swami,

Because I use GradualTest to run my test suites, I can't use the STS Stat program on your website. So I wrote a little program, called GTScan, to scan the EPD output from GradualTest and produce a score. I can send it to you if you are interested.

There may even be some corner cases in which it does not agree with STS Stat, so if you could find the time to do a little bit of comparative testing it would be very much appreciated.

Many thanks,
jm
Thanks a lot, John! I'd be interested in this program. I'd certainly do test sometimes in the weekend and compare results with output from STS Stat.

If in some case the result don't match, It's likely that there's difference between testing the engine in Arena, and testing it in Gradtest.

You can send it to me at nswami15 at yahoo dot com.

Best Regards,
Swami

Nimzovik
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Re: Myrddin 0.84 release

Post by Nimzovik » Wed Sep 22, 2010 2:08 am

A blast from the past. John I wish you good luck on your endeavors.

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JVMerlino
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Myrddin 0.84b release

Post by JVMerlino » Wed Sep 29, 2010 5:52 pm

Myrddin version 0.84b has now been released. Currently it is only available on Jim Ablett's site (http://homepages.tesco.net/henry.ablett/jims.html), but I will also make it available on my official site (http://computer-chess.org/doku.php?id=c ... ddin:index) within a few days.

It fixes an initialization bug that can only occur when trying to play local matches (i.e. not on ICS) using Winboard and the Gaviota tablebases. The bug would cause Winboard to think that Myrddin claimed a draw before the game began. The bug does not occur under any other circumstance or with any other chess GUI.

Otherwise, the code is identical to 0.84. So you don't have to download it if you hadn't been getting the bug.

Many thanks to Olivier Deville for reporting the problem!

jm

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