Author: Jeff GAZET
Date: 09:56:24 05/08/04
Go up one level in this thread
>>>Hi,
>>>when getting hashtable informations like this :
>>>switch(target->flags)
>>> {
>>> case hashfEXACT: return target->eval; break;
>>> case hashfALPHA: if(target->eval<=alpha) {return alpha;} break;
>>> case hashfBETA: if(target->eval>=beta) {return beta;} break;
>>> }
>>>In which case mustn'nt we do a null-move ?
>>>Thanks.
>>If your hash record for a node (position) does not have enough draft to return
>>from the search at this point, but does have enough draft
>> (ie current_depth – R) for the null move search and predicts that it will
>> not fail high (ie the stored hashflag is not a lower bound and the stored
>>> value is < beta) then you can avoid the null move search for this node.
I don't understand what means "draft". I would understand better a piece of code
than a sentence, if possible.
So you say :
if(depth-R>0 && target->eval<beta)... DoNull=FALSE... ? :-)
Thanks
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