Soma Puzzle. Created by Danish author Piet Hein in 1936. Sold by Parker Brothers in 1969.
Seven different shapes all comprised of cube units, can be assembled into a 3x3x3 cube as well as other 3D objects.
This model shows two sets. One set is exploded to show individual pieces. Second set is shown assembled in just one of many cube solutions. #soma_puzzle_toy_cube_piet_hein