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[Pawel Koziol]

Inspired by this thread I did some tests for Rodent (already using non-linear mobility). Results are somewhat funny and very piece-dependent:

- excluding squares controlled by enemy pawns helps for knights (big time) and bishops (a bit), hurts for majors.
- forward mobility proved useful for bishops and rooks, but hurts me for knights and queens. As for knights, it might be redundant with my piece-square table.
- there's a gain in making queen "transparent" to bishop, but it may be based just on speed (no recalculation for king safety eval). there's also a gain in making major pieces transparent along rays. come to think of it, I blur Don Dailey's distinction between "mobility" and "range" more and more.
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Pawel Koziol
http://www.pkoziol.cal24.pl/rodent/rodent.htm