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Subject: Re: When to stop searching captures?

Author: Heiko Mikala

Date: 15:13:34 09/16/98

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On September 16, 1998 at 16:12:20, John Coffey wrote:

>On September 16, 1998 at 11:31:22, William H Rogers wrote:
>
>>I think that you are missing something. Assuming that you are capturing a
>>piece located at KP4.. the only captures that your program should be looking
>>at is the pieces that can attack KP4..I can see no way that in any situation
>>that there can be more than 5 or so pieces attacking the same square, so
>>you only search captures on that square until there are no more possible
>>captures.
>>The Alpha-Beta routine should eliminate some before the list grows to big.
>
>Looking at captures only on one square seems rather limited to me.  I wonder
>how many programs use this approach?

I was wondering about this answer too.

I guess William maybe confused this with a static exchange evaluator?

William, do you really use this idea in your normal quiescence search? If so,
what are your experiences with this?

At least I am using this approach only in SEE, in normal quiescence I'm doing it
in the same way as described by Roberto - using the SEE as an enhancement to
eliminate some seemingly loosing captures.

Heiko.



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