Horseman's Chess

Horseman's Chess is a chess variant in which a piece’s movement capabilities can change during play. The primary actors are the familiar chess pieces (Pawn, Rook, Knight, Bishop, Queen, and King) with their traditional movement capabilities except that none of them can move more than two spaces nor jump spaces without assistance.

Pieces augment their movement by using mounts. The Charger mount allows a piece to move an unlimited number of spaces, while the Jumper mount allows a piece to jump over an intermediate space when moving two spaces.

—description from the designer