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Subject: Re: Transposition table woes

Author: Robert Hyatt

Date: 15:14:35 07/17/03

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On July 17, 2003 at 17:40:35, Rick Bischoff wrote:

>Bob,
>
>Thanks, I must have a momentary lapse of reason there.  Anyway I made the change
>and am now getting at least one more move in that line-- but I found out why
>there aren't any more.... It is failing low (is that what you call it when there
>are no moves with score > alpha?) and so we never find a "best move" to store
>into the hash...   In cases like this, should I simply not store a move?

Yes, since there is none to store.  I use "0" for that case myself since that
is an invalid binary move for crafty.


>
>On July 17, 2003 at 16:57:43, Robert Hyatt wrote:
>
>>Clearly if score is >= beta, the best move is the current move you are
>>searching.  Store it.  If the score is < beta but > alpha, then the best
>>move is the move stored in your PV.  Store that in this case.
>>



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