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Subject: Re: about bug in fruit.2.2(I sent bug report to fabien few minutes ago)

Author: Uri Blass

Date: 06:49:14 12/02/05

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On December 02, 2005 at 03:16:35, Martin Giepmans wrote:

>Of course only Fabien can know, but a possible explanation is that Fruit uses
>extensions that depend on game history, for example a recapture extension for
>recaptures on ply 1.
>When you enter the game there is a recapture (e5xf6) on ply 1 but when you enter
>the position there is none. This results in a different search tree.
>
>Martin

When you enter the game e5xf6 is not a recapture.

A recapture is a capture that is reply to capture and not a capture that is
reply to pawn move.

I know that there are programs that can extend recaptures but this cannot
explain different analysis.

I also usually do not expect different order of moves to lead to significant
different evaluation but only to different number of nodes with the same pv.

history pruning may change the result in one depth but the result continue to be
different also later.

Uri



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