Toads And Frogs Puzzle
in 2D

Here's a 2-dimensional variant of the Toads and Frogs puzzle. The rules are virtually identical. Frogs only move rightward or downward, toads can only move leftward and upward. A piece can jump over another piece of a different kind, provided the square on which it lands is empty. The goal of the puzzle of course is to cause frogs and toads to swap their positions.

References

1. W.W.Rouse Ball and H.S.M.Coxeter, Mathematical Recreations and Essays, Dover, 1987

Copyright © 1996-2008 Alexander Bogomolny