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Subject: Re: Hiarcs 10 in ECMGCP

Author: Tord Romstad

Date: 07:56:28 12/15/05

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On December 15, 2005 at 10:13:51, Uri Blass wrote:

>I read that Dieter claimed that the ecmgcp test suite contains too many
>sacrifices and he prefers the arasan test suites so I wonder if you tried to
>compare results in this test.

I just tried the Arasan 5 test suite, and got a result of 67/141 at 10 seconds
per position.  This doesn't look good, but I have no idea how difficult these
positions really are.  What scores are normal for other programs?

>I wonder if you tried other test suites and I wonder if you tried longer time
>control.

No.  I don't use test suites much, and I have no patience for long time
controls.

>I remember that you had a hash bug in glaurung and it may be interesting to >know if fixing that bug has some effect in solving test suites faster and if
>the effect was bigger at longer time control.

I haven't noticed any difference in test suites, and I don't have enough
data to say anything about the influence of the time control.  I think
fixing the hash bug mainly improved the endgame.  When I watch Glaurung play,
it looks like the endgame play is much better than it used to be, and I
haven't added any new endgame knowledge at all the last half year.  The
most likely explanation is the hash table bug.

It is also possible that I am simply wrong.  I haven't made any tests to
decide whether the endgame strength is really improved, it is just a
subjective observation based on watching the engine play.

Tord



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