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Subject: Re: Internal Iterative Deepening

Author: Robert Hyatt

Date: 19:59:58 08/29/00

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On August 29, 2000 at 14:59:13, Matt McKnight wrote:

>I have tried to implement internal iterative deepening, but it doesn't help me
>any.  In fact, I require a lot more nodes with IID turned on.  Perhaps I don't
>totally understand the concept.  Could someone explain to me how it works
>please?




it will kill you if you use it in the wrong places.  I use PVS, so here is
my approach:  If I enter a node, where alpha != beta-1, then I am searching
a PV node.  If I don't have a hash table move, I do an internal iterative
deepening search to get a best move to try first.  That is the _only_ place
it should be used.  And since there are so few PV nodes searched in a typical
iteration, it should hardly ever be needed...



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