This 14x10 variants was invented by John Manners, 3rd Duke of Rutland (England) in 1747. Two extra fairy pieces are used: the Concubine (Knight+Rook) and the Crowned Rook (King+Rook).
Played on a 14x10 board, 2 fairy pieces:



Each player starts with:
Castling: no.
"En passant" capture: yes.
Triple move for Pawns (start).