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Subject: Re: Rebel's plus sign during analysis

Author: Harald Faber

Date: 20:51:30 08/02/98

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On August 02, 1998 at 03:35:04, Ed Schröder wrote:

>In Rebel10 when a "fail-high" or (+) appears Rebel will immediately mark
>the move as "best-move" and THEN start the re-search to figure out the
>correct score. This because of the growing popularity of finding key-moves
>in the so called computer test sets. As far as I know all (most?) chess
>programs act like this.
>
>This change will result in finding key-moves average 20% faster and
>therefore Rebel10 will perform a little bit better in computer test sets.
>
>Still you will notice that sometimes (say in 5% of the cases) the "fail-high"
>or (+) is NOT rewarded by the "re-search". In this cases Rebel10 will
>stick to the previous "best-move".
>
>I have noticed that other chess programs (all??) do not show this
>behavior. When they "fail-high" the move always becomes the
>"best-move".
>
>Is the latter true or are there programs around who behave like Rebel
>in this respect?
>
>- Ed -

At least MChessPro behaves like that. Sometimes it shows a new planned move, the
actual serached, but it happens that MCP returns to the old best move.



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