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Subject: Re: Alpha beta window shown on screen

Author: Willie Wood

Date: 12:25:53 11/07/97

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On November 07, 1997 at 14:36:07, Robert Hyatt wrote:

>On November 07, 1997 at 13:22:10, Komputer Korner wrote:
>
>>I throw this out to all chess software programmers. Why can't the screen
>>show the alpha beta window at all times during the search as an option?
>>Surely this information doesn't change so much that it would be
>>unreadable.
>
>if you use PVS as I do, it will *always* simply be score, score+1, where
>score is the score you see for the best move so far.  That wouldn't be
>very informative.  if you don't use PVS, then yes it changes very
>rapidly
>as different parts of the tree are traversed and affect alpha/beta/both.
>perhaps thousands of times per second...


Bob,

I could've sworn you said you didn't use a zero-width search, due to
inefficiencies caused by pv oscillation.  Or does PVS (score, score+1)
not imply zero-width?

WW



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