Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: When to stop searching captures?

Author: Robert Hyatt

Date: 18:11:54 09/15/98

Go up one level in this thread


On September 15, 1998 at 18:51:00, John Coffey wrote:

>Let say hypothetically that I have a program that is doing a simple
>3 ply search, but will extend its look ahead for every capture.  The question
>becomes, how far should the look ahead be extended?  The last time I wrote
>a chess program (1987) I found that the program would examine frivilous
>captures out to infinity if I didn't put a limit on it.  (I literally had
>20 captures in a row.)
>
>So say I limit the extensions to 2*N, where if N is 3 then 2*N equals 6.
>Seems to me that this might not yield an accurate result and could still give
>lots of frivilous captures.
>
>John Coffey


1.  you really can't extend forever, because the most captures you can
ever have in a row is 30, because then you are fresh out of piecs to
capture.

2.  I don't "extend" on captures as I think you are suggesting, although I
do follow captures in the "quiescience search" but there captures are *all*
I consider which limits this quite effectively...



This page took 0.01 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.