[zizelslw] Limited capture distance

Fairy chess pieces with unlimited range of movement (like a rook) but only a limited range of capture (like a wazir) are elegantly interesting.  First move in close, then on the next move, kill.  On the other side, you only need to consider being captured by nearby pieces.

Motivation was for large boards, where it seems strange that a very distant piece can matter in a position.  It breaks the human-familiar idea of locality.