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Subject: Re: Method of Analogies??

Author: David Blackman

Date: 23:40:37 05/29/98

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On May 29, 1998 at 15:03:04, Bruce Cleaver wrote:

>Whatever happened to the old Russian idea of 'Method of Analogies'
>whereby foolish moves would not be searched until conditions that
>refuted them changed?  This idea was described in David Levy's book "How
>Computers Play Chess".
>
>Too slow? Unreliable?  Hard to implement?
>
>Thanks in advance,
>
>Bruce

I tried adding this to my program, in a few different but very simple
ways. The result was usually that the program got slightly weaker. If i
trusted the idea too much and relied on it completely, the program made
tactical errors and got a lot weaker. This probably just means that i
wasn't clever enough to make it work properly. I will definitely try it
again at some stage.

This is one of those ideas that looks obvious, but is very hard to
implement sensibly. A few programmers admit to experimenting with it,
but i haven't heard of even one strong program that actually uses it in
competition.



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