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Subject: Re: Behind deep Blue

Author: Jeremiah Penery

Date: 14:17:43 10/20/02

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On October 20, 2002 at 14:37:09, Uri Blass wrote:

>On October 20, 2002 at 14:05:48, Jeremiah Penery wrote:
>
>>Would you rather have a program with no king safety (no knowledge), or a program
>>that over-evaluates it (untuned knowledge)?
>
>It is not clear
>
>I think that a program with no king safety may be also better.
>The question is what is the size of the mistake in the evaluation.
>
>I agree that slightly untuned is better than nothing but the question is if
>deeper blue was only slightly untuned.

I can promise you that if you have a GOOD king safety (maybe something like
CSTal 2 had), no matter how badly it's tuned, you will win way more than you
lose against an opponent with NO king safety, if search speed is roughly
equivalent.  The reason CSTal lost so much against other computer opponents is
because it searched so much slower.  Deep Blue supposedly evaluated the same
kinds of things as CSTal, but it did not have to be extremely slow because of
it.



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