Abstract: A puzzle comprising a game board and pieces in which the side surfaces of a regular polyhedron are depicted in spaced relationship on the game board, the vertexes adjoining at a corner of the polyhedron being identified by non-crossing lines from said vertexes to a common point, and in which the pieces are congruent with the depicted side surfaces and have at each vertex an indicium selected from as many different indicia as there are adjoining vertexes at a corner of the polyhedron, said vertex marking being permuted in such a way that none of the pieces are identical. The number of said pieces correspond to the number of side surfaces of the polyhedron in question, and in solving the puzzle the pieces are to be placed covering the depicted polygons of the board, so that none of the markings of the vertexes adjoining at any of said center points are identical.