This is not your everyday “fit the pieces back in the box” puzzle, but those who have the stamina will be excited to know that the number of possible configurations has been calculated as 4,239! Digits in the Box is a unique puzzle that requires players to fit each of ten geometric shapes into a cube container. These shapes are 3-D representations of the numbers 0 through 9. Unlike the three-dimensional pieces in most box puzzles, these digits lie flat. The pieces can be turned and fitted together to form a cube that fits snugly in the plastic box. No solution is included, but you may find yourself wishing to see one. Meets all ASTM, and CPSIA safety standards.