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Subject: Re: Mobility in eval

Author: Bruce Moreland

Date: 16:32:40 11/25/97

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On November 25, 1997 at 15:11:05, Willie Wood wrote:

>
>On November 24, 1997 at 19:44:44, Robert Hyatt wrote:
>
>>
>>I'm not sure what Bruce does.  I do mobility for bishops, as there is
>>not a lot of other things that can tell whether the bishop is a good one
>>or a bad one...  But it doesn't have to be an expensive calculation,  if
>>you use the right data structures.  IE mobility is "free" for bitmap
>>programs...
>>
>
>Right.  I don't use bitmaps, so it's an issue.  I'm pretty sure Bruce
>mentioned that he doesn't use mobility, so I thought he might pipe up.
>I'll send him a note.

I have no mobility terms in Ferret, it seems to do fine without them.
Sometimes it gets bad pieces, but so do other programs.

I'm not opposed to mobility terms, maybe they work.  If someone has
experience with them, or knows of a professional program that *for sure*
uses them (not just a deduction of the form, "they are very slow, so
they must use mobility"), please let us know.

I think it may be possible to be more sophisticated than this, without
having to go to the trouble of iterating the pseudo-moves for the
pieces.

bruce



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