Chess variant on a 10x8 board with two fairy chess pieces: the chancellor (rook-knight compound) and the archbishop (bishop-knight compound).
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Otherwise the rules of chess apply, with the following differences:
- Pawns can promote to any piece in this game (except king and pawn).
- Castling: the king moves three squares, and the rook moves two or three squares, depending on the side (see diagram below).
J. R. Capablanca world chess champion, 1920s[wiki]