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Subject: Re: Definition of mobility

Author: Frank Phillips

Date: 07:55:54 06/02/01

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On June 02, 2001 at 10:11:29, Dan Andersson wrote:

>Usually Mobility refers to the number of legal moves in a position, but
>refinements are possible.

Dan
Thanks.

Legal moves sounds expensive. I guess psuedo legal moves may be close enough.

Levy's old book (THe Chess Computer Handbook) seems to value mobility very
highly.  In simple Othello program it was very important, almost the only
important evaluation term.

I used to do it for bishops (free squares), but it was costly - no rotated
bitboards.  Lately I have concentrating on block pawns as a surrogate; or is it
determinant?

Frank



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