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Subject: Re: PRUNING?

Author: Robert Hyatt

Date: 17:32:01 04/13/00

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On April 13, 2000 at 12:21:31, William H Rogers wrote:

>My program generates say 30 possible moves at ply one and half of them return a
>negative score. Would it be likely to prune those moves out of the tree and thus
>speed up the program?
>I must mention that I evaluate each move as it is made.
>Thanks
>Bill


You are talking about "forward pruning" which is full of danger.  Your
eval likely doesn't understand deep tactics, yet you will be letting it
dictate which moves you search looking for tactics and which you don't.

It is _very_ difficult to do this and not cause huge search problems...



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