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Subject: Re: Unnecessary Underpromotions

Author: Uri Blass

Date: 03:14:01 05/22/03

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On May 22, 2003 at 06:08:47, José Carlos wrote:

>On May 22, 2003 at 01:01:38, Robin Smith wrote:
>
>>Often programs will underpromote a pawn in situations where they think capturing
>>the (under)promoted piece is still the best reply. Can anyone give an example
>>from an actual game where this underspromotion cost the computer a 1/2 point?
>>
>>Robin
>
>  I can't recall any game with this problem, but it's really easy to fix. I
>simply order the promotions so that promoting to queen gets searched first. The
>all the other underpromotions will return alpha and thus ignored.
>
>  José C.

It is possible to fix but it is not so easy to fix because the other promotion
may leas to different extensions and different score.

Uri



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