A puzzle that provides for rearranging different pieces to form a pattern
formed from the pieces is disclosed. The puzzle includes at least one
generally trilateral piece having three sides, and at least one generally
quadrilateral piece. At least two of the sides of the quadrilateral piece
have been adapted for engaging the friction enhancing surface on the
trilateral piece, so that by surrounding the fixed hub with the
trilateral pieces that are separated by the quadrilateral pieces, a
continuous round gear surface is formed, that can be used to rotate the
trilateral and the quadrilateral pieces together.