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Subject: Re: Can we use hash table at root?

Author: Robert Hyatt

Date: 18:38:39 01/31/00

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On January 31, 2000 at 16:48:41, Tim wrote:

>Crafty does not use(store and probe) hash table at root.
>How about other programs?
>Is there problem to use hash table at root?


Suppose you look up the root position before you search a single move.  What
do you get back?  A fail high?  etc.  There is really nothing useful to be
gained by probing at ply=1, and exiting without searching a single move can
cause some messy problems depending on how you write the code.  In my case,
I didn't want to exit without searching as that confuses some bookkeeping that
I do..



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