The Buffalo Nickel Puzzle is based on the Nine-and-a-half-Moves puzzle by M. Oskar van Deventer. It is composed of just three pieces that fit together in such a way to hide a secret compartment containing a wooden nickel. Although the three pieces are flat and lie in a single plane, it takes a remarkable 9 1/2 moves to solve. This puzzle also includes Bits and Pieces solution sheet. Stored in a smoke and pet free home.