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Subject: Re: saving the PV for a position in the hash table

Author: Georg v. Zimmermann

Date: 02:03:50 05/02/02

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On May 01, 2002 at 18:46:03, Andrew Dados wrote:

>On May 01, 2002 at 18:28:58, David Hanley wrote:
>
>>On May 01, 2002 at 15:44:54, Andrew Dados wrote:
>>
>>
>>>well.. the only PV you ever get in entire tree is backed up to root anyway...
>>>unless your search is broken. :)
>>
>>If that were true, you would not need a triangualar array to store the PV?
>>
>>In some inner node of the tree, you may very well get a line that MAY be a new
>>PV.  It's a good line from this position.  But I suppose you are saying this
>>should not be called PV?  In that case you are right, maybe inner PV(IPV) is
>>what i should say.
>>
>>The idea is just to store are good line from a position when possible, instead
>>of only a good move.  Of course i emphasize "when possible"
>>
>>dave
>
>That's what hash table does anyway...

The only situation I can imagine where it would help is when the HT entry
"below" gets overwritten, and I dont think its worth the extra space you will
have to alloc for 1 entry.

Georg



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