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Subject: Re: Hashtable trick... or melon

Author: Inmann Werner

Date: 00:49:30 02/15/00

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On February 14, 2000 at 15:10:57, Andrew Dados wrote:

> Let us consider a node at ply 0, where eval>alpha. We call qsearch, returned
>score is < alpha. Now, at next iteration that position will also fail low
>(assuming same alpha), because there will be no other moves for failing low side
>then qsearch moves again...
>So: we can store that score in HT with (depth + 1) instead of (depth) due to
>above... or am I missing something? (I do that trick for a while, no side
>effects found yet except for lower node count).
>
>(The above assumes same set of moves is being considered on all qsearch plys)
>
>-Andrew-

Seems like an interesting thing, but I do not understand full, what you mean.
1) You mean distance 0 , not ply 0 or? (last normal search node?)
2) At distance 0, the eval>alpha comes from the evaluation function?
3) After qsearch, the eval < alpha comes back?
4) then you store at distance 0 in Hash wit 1 distance increased?

????

Werner



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