Computer Chess Club Archives




Subject: Re: no more comments???

Author: Robert Hyatt

Date: 17:21:33 07/25/02

Go up one level in this thread

On July 25, 2002 at 18:42:44, Sune Fischer wrote:

>On July 25, 2002 at 18:01:49, Robert Hyatt wrote:
>>So you are "out of sync" here?  IE you make a move, and update the legal
>>move count for your opponent immediately so that you know whether to extend
>>here or not?
>>That is a bit like my old incremental move generation.  I would make a move
>>and update everything so that generating moves was always trivial.  The problem
>>is that you make a move, update the stuff, then get a hash hit and don't
>>use the updated info at all.  I gave up on that and decided to just update
>>exactly when it is needed...
>But how many hash hits do you get compared to the node and evaluation numbers?
>I have a feeling the hash hit number is insignificant compared to the total node

I get about 10-20% in the middlegame...  More as the game goes on, of course.
And each hash hit has the potential of avoiding a move generation if the "best
move" is good enough...

As I said, not a huge savings.  But definitely better than nothing...

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