Computer Chess Club Archives




Subject: Re: a question to Tord about detecting threats in null move

Author: Mridul Muralidharan

Date: 10:38:54 10/03/03

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  I was a bit taken aback by these declarations :

On October 03, 2003 at 12:47:23, Uri Blass wrote:
>I prefer even not to care about using hash tables for pruning because my
>experience told me that I cannot get significant gain there easily

Hash table not giving you pruning ? I suspect a bug in your hashkey -
Or maybe it is the easily that is operative word ?
I think there are a lot of open source programs that you can refer to and
correct your bugs with - crafty , GNUChess , etc , etc.
Might help to get this right.

>(I have a lot
>of stuff that means that pruning or extension is not defined only by the

Where ever possible , I try to make the search behaviour as relevent to the
current position as possible and not rely on past search.
Why do you want to do the opposite ?
Wont you not end up with heavy instability problems ?



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