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Subject: Re: Explosion in WAC 102

Author: David Rasmussen

Date: 09:52:29 01/11/02

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On January 11, 2002 at 12:10:32, Martin Giepmans wrote:

>
>I don't know if I understand your question.
>How can you reach depth 8 when a mate is found at depth 1 or 2?
>Doesn't your engine stop in such a case?

Yes, normally, but not in a test suite.

>Even if you want to look for a shorter mate, searching *deeper* is of course
>useless ...

I am not using for a shorter mate, I am just letting it search, to see how it
performs. Forget that this is a mate position. It is just a test position to
test extensions and search rules. In my case search explodes at higher depths
(>7).

>Anyway, if the search explodes after a mate is found, I guess there must also be
>something wrong with the hashtable.
>

Why? Even if the mate is in the hashtable, other moves are still followed deeper
with each iteration. And with extensions, some of these lines could be extended
very long, if I am not careful. And this is what happens. I don't see why that
implies a hash table problem. The hash table wont fix bad extensions.

/David



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