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Subject: Re: Crafty question: SearchRoot & Hash table?

Author: Pham Minh Tri

Date: 14:55:04 01/24/01

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On January 24, 2001 at 10:13:36, Robert Hyatt wrote:

>On January 24, 2001 at 07:02:37, Pham Minh Tri wrote:
>
>>Hi Dr Hyatt,
>>
>>I wonder why you do not use hash table for searching of first ply (SearchRoot
>>function)? I checked and found that sometimes hashtable works in this ply
>>(atleast when program searchs with shallow depths of iterate loop).
>>
>>Thank in advance,
>>Pham
>
>HashProbe() is called before any move is searched.  At the root, what good
>would it do to find a score before I try a move?


But could it find scores from last search? I mean, if the last search finishs at
10 ply, the results of 1-10 ply are saved in the hash table and useful for roots
of next search when iterate loop works from 1 to 9 ply.

>As a result, I try each ply-1 move, then recursively call search which
>immediately does a probe at ply=2...



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