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Subject: Re: Odd ply´s (as in odd/even) are strange, why?

Author: Robert Hyatt

Date: 19:59:04 06/22/02

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On June 22, 2002 at 17:15:42, Russell Reagan wrote:

>Would it be more advantageous to use iterative deepening with an increment of 2
>instead of 1? In other words, instead of searching 1 ply, 2 ply, 3 ply, 4 ply,
>etc. you would search 2 ply, 4 ply, 6 ply, 8 ply, etc. Would this change
>anything at all?
>
>Russell


This has been done.  BeBe was the first program I knew of that only did
odd-ply searches in an attempt to stop the odd/even iteration score
swings.

The problem is that skipping a ply means the next iteration will take 9x
as long rather than 3x, which is a problem for time controls...



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