Computer Chess Club Archives




Subject: Re: Maximum Number of Legal Moves

Author: James Swafford

Date: 07:04:41 05/09/05

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I am glad you asked this question.  I've always used 250 it's
worked out ok, but I've never proven to myself that 250 is a safe

Is anybody using a hard limit > 250?

On May 08, 2005 at 23:44:31, Andrew Shapira wrote:

>What's best known (the smallest) upper bound on the number of legal moves, taken
>over all chess positions?  An obvious bound is 9*7*4+2*14+2*14+2*8+8 = 332.
>This comes from 9 queens, 2 rooks, 2 bishops, 2 knights, and 1 king.  Is a
>better bound known?

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