This sphere-shaped puzzle represents a planet and its surrounding ring. Positioned snugly inside the ring, the planet looks as if it cannot be removed. It may appear that all you can do is rotate it on its axis, but is that really the case? Hold this puzzle invented by Oskar van Deventer and have an intergalactic, mind-expanding challenge! Details: Includes 1 puzzle For 1 player Level 5 For ages 8 and up