This uniquely shaped puzzle seems to exactly match the shape of a UFO! Even as you attempt to take out the spherical piece in the center, it spins freely, which makes grasping the solution a galactic challenge. Level 4 puzzles are considered challenging by most puzzlers. Created by Finnish puzzle designer Vesa Timonen. Recommended for 1 player, ages 12 and up. Made in China. Package dimensions: 4.750 x 3.000 x 1.750 inches. Includes 1 Puzzle (6 Pieces). Wipe clean with dry or damp cloth. Imported Material & Care Plastic Spot clean only