Historical notesThe Leo is a fairy chess piece, used with a certain frequency in fairy chess problems. It was invented in 1936 by Dr. P. Seyfert, who was inspired by the movement of the Pao (Cannon) from Chinese Chess (Xiangqi).
MovementThe Leo moves like a queen when it does not take, i.e., any number of empty squares on an orthogonal or diagonal line. When the Leo makes a capturing move, it moves along an orthogonal or diagonal line, but it must jump over exactly one piece, regardless its color: when taking, the leo also moves over a horizontal, vertical or diagonal line, jumps over the first piece it meets (which may either be friendly or from the opponent) and then continues over the line until the next piece it sees: if that is from the opponent, the pao can take it by moving to that position.
The Leo on d5 can take the bishop on b5, the rook on d1, and the knights on g2 and g8.
Written by Hans Bodlaender.
WWW page created: May 24, 2000.