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Subject: Re: LeTiger and Crafty on ICC

Author: Robert Hyatt

Date: 17:29:06 10/31/00

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On October 31, 2000 at 18:27:44, Bruce Moreland wrote:

>On October 31, 2000 at 10:00:42, Robert Hyatt wrote:
>
>>There is a change.  What you said used to be true, but now scrappy runs on
>>identical hardware, with the same book, TBs and so forth.  The _only_ difference
>>is that it has !computer in its formula, as an experiment to see whether Crafty
>>does better vs humans or vs computers/humans combined.
>
>I think you can safely say that it achieves a higher rating with !computer,
>given the !computer types who seem to be playing it and the time controls they
>like.
>
>Its maximum rating is over 150 points higher than regular Crafty, and when I've
>seen it it always seems to be three or four hundred points higher than regular
>Crafty.
>
>bruce


At present, yes.  But the last time I ran this experiment, this wasn't
true (6 months ago).  Crafty and Scrappy were almost identical.  I think
there was a thread here that discussed this.  However, in the current case,
Crafty is mainly playing computers, while 6 months ago crafty was playing
a mix of humans and computers.  That probably accounts for the differences.

Some computers that do fairly well against me still have trouble with humans
and can't get their rating up high enough to not drag crafty down significantly.

And then there are ICC computers that use weak and strong programs as they
choose, which causes some rating pertubations...



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