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Piececlopedia: Leo
Historical notes
The 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).
For who knows the movement of the cannon from Chinese Chess: the
relation between Pao and Rook is the same as the
relation between Leo and Queen.
Movement
The 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.
Movement diagram
































































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.
Last modified: Monday, December 22, 2008