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Subject: Re: Recapture Extension

Author: Georg v. Zimmermann

Date: 09:01:07 01/10/02

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On January 09, 2002 at 22:52:10, Pham Minh Tri wrote:

>On January 09, 2002 at 14:36:02, David Rasmussen wrote:
>
>>On January 09, 2002 at 12:36:28, Miguel A. Ballicora wrote:
>>
>>>
>>>I restrict it a bit more. It has to be not only a recapture on the same square,
>>>with the same material but also has to be the ONLY recapture possible in that
>>>square.
>>>
>>
>>That seems like a good idea.
>>
>>Ideally we would want to extend only the moves that are very good. Of course
>>extending when there is one move clearly better than the others is the singular
>>extension. So the recapture extension make sense in those positions where the
>>recapture is the only sane move, and analyzing the rest of the moves costs
>>little. On the other hand, we don't want to extend a recapture just because it's
>>a recapture. That particular recapture might not be the only good move. If
>>there's only one recapture, it seems a lot more likely that it is a good move. A
>>good idea.
>
>I agree that is a good idea. But how do you implement it in simple way? I am
>afraid that that code is more expensive than Crafty code ;)
>
>>
>>/David

Crafty is BB based, so checking whether it is the only possible move to that
square is cheap and simple in Crafty .. I did it to test my capture-extension in
crafty.

Georg



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