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Subject: Re: new forward pruning idea.

Author: Ulrich Tuerke

Date: 08:40:06 02/08/03

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On February 08, 2003 at 02:42:34, Vincent Diepeveen wrote:

>cross posted at rec.games.chess.computer:
>
>Subject: An interesting forward pruning experiment - with pseudo description
>Date: Fri, 07 Feb 2003 23:51:19 GMT

Hmm, I can't really get the idea behind this.

IMHO, a null move is used to refute the preceeding move. In case of refutation,
the null move search fails high.

Your reduction now comes in case the null move search fails low. So, these are
the cases, where the preceeding move could not be refuted. Why then, shouldn't
we reduce depth for the remaining search ? These are just the potentially
interesting positions. I can't help it but it doesn't seem logical to me.

I suspect that you trick will prune off lots of interesting nodes.

Uli



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