Hi Mats, yes, I handled the Mammoth as a fully jumping piece. Your
arguments whether the piece is not save towards distant threats is a
TACTICAL argument, which has nothing to do in average piece value
considerations. Be aware, that a Mammoth also has the chance to escape
such threats by his numerous move possibilities. And - as already earlier
stated - real exchanges would have to consider the actual positional
implications of all pieces within the actual board situation.
P.S.: I should mention again, that my scheme is calculating AVERAGE piece
values, which have to be completed by positional detail evaluations when
evaluating real board positions.
P.P.S.: See also at http://www.chessbox.de/Compu/schachveri1_e.html