Author: Robert Hyatt
Date: 11:59:59 11/29/99
Go up one level in this thread
On November 29, 1999 at 14:28:46, William Bryant wrote:
>On November 29, 1999 at 14:20:19, Vincent Diepeveen wrote:
>> if( nullmovescore >= beta ) {
>> StoreHash(alfa,beta,nullmovescore,depth);
>> return(nullmovescore);
>
>I missed this in your reply, so let me ask it again
>
>Is there any advantage / harm in storing the value as:
> StoreHash(alfa, beta, nullmovescore, depth-1-R);
>
>ie. in storing the value at the searched depth rather than
>the current depth.
>
>William
>wbryant@ix.netcom.com
There is plenty wrong with it. IE if you reach this position at the same depth
somewhere else, you will look it up, not be able to fail high (depth is too low
in the table entry) so you do a null-move search (again) that does fail high.
You just wasted a bunch of time doing so...
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