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The Piececlopedia is intended as a scholarly reference concerning the history and naming conventions of pieces used in Chess variants. But it is not a set of standards concerning what you must call pieces in newly invented games.

Piececlopedia: Root-fifty leaper

Historical notes

The root-fifty leaper is an infrequently used piece in fairy chess problems. It finds it name from the fact that the distance that it jumps is exactly the square root of 50.


The root-fifty leaper makes either a (5,5)-jump or a (7,1)-jump, i.e., it has the following possible jumping moves: It `jumps', i.e., it can move regardless whether the intervening squares are occupied or not.

Note that a root-fifty leaper cannot change the color of the squares it stands on.

Movement diagram

In the diagram below, the root-fifty leaper can move to all the squares marked with a black circle.

This is an item in the Piececlopedia: an overview of different (fairy) chess pieces.
Written by Hans Bodlaender, using parts of texts of Ben Good.
WWW page created: December 23, 1999. Last modified: December 30, 1999.