Author: Stuart Cracraft
Date: 19:13:19 12/30/05
Go up one level in this thread
On December 29, 2005 at 14:12:58, Uri Blass wrote: >On December 29, 2005 at 13:52:49, Stuart Cracraft wrote: > >>On December 29, 2005 at 05:58:50, Uri Blass wrote: >> >>>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 >> >>By "all moves relative to material" what do you mean? >> >>Stuart > >I will give example for mobility of rooks in fruit in the opening. > >In fruit the formula of opening mobility for rooks is 0.02*(R-7) when R is the >number of moves of the rook. > >It means that if you have one rook and it has 8 moves you get bonus of +0.02 >pawns but if you have 2 rooks that every one of them has 4 moves you get bonus >of 0.02*(4-7) for every rook or in other word panelty of 0.12 pawns > >You can see that the same number of moves for rooks(8 moves) can give bonus or >panelty depending on the question if the side has one rook or 2 rooks. > >Uri Thanks.
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