Tony,
Thank you for your comments--you've given me food for thought. I was
thinking of using Grand Chess rather than FIDE chess as the basis--the
extra combo pieces will slow things down, but Grand is faster than FIDE.
I also like the symmetry of move types that results from using all the
combos. But a FIDE based game would certainly be playable.
One variant: friendly pieces add, enemy pieces take away.
Another variant: enemy pieces add, friendly pieces take away. This will be
strange and it will be hard to get an attack going--say you pin an enemy
Knight with your Rook--his Knight is now a temporary Chancellor and will
capture your Rook! Pinning the Knight with your Queen is worse.
