The set of 9 cubes is a two dimensional combination puzzle. They are uniquely printed in each of the six faces. For the puzzle to be solved, arranging the blocks from one to nine to reveal the color gradient geometric shape on the opposite side.
cube W 1 3/4” x L 1 3/4” x HT 1 3/4”
( 4.5 x 4.5 x 4.5 cm.)