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Subject: Re: Mobility in Chess Evaluation Function at terminal-nodes

Author: Uri Blass

Date: 02:58:50 12/29/05

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On December 29, 2005 at 05:56:33, Uri Blass wrote:

>On December 29, 2005 at 05:02:36, Tord Romstad wrote:
>
>>On December 29, 2005 at 04:49:09, Gian-Carlo Pascutto wrote:
>>
>>>On December 28, 2005 at 16:04:28, Tord Romstad wrote:
>>>
>>>>Perhaps you can even omit some
>>>>piece types.  I don't evaluate pawn or king mobility at all (in my
>>>>experience, there are better ways to evaluate king activity), and I
>>>>have never seen any measurable difference in strength when I
>>>>switch queen mobility on or off.
>>>
>>>What about knights?
>>
>>Good question.   I have never tried disabling knight mobility, but
>>it is perfectly possible that a piece square table with high values
>>for central squares would work just as well as pseudo-legal
>>mobility for knights.
>>
>>Tord
>
>My mobility for the knight is legal mobility.
>Knight that is pinned get no bonus.
>
>Uri

When I think more about it I will need to give it negative score when I change
my mobility evaluation because today I give every side bonus based on the number
of all moves and I plan to change it to bonus based on the number of all moves
relative to material(similiar to fruit)

Uri



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