The Rubik's Cube is celebrating a 40th birthday.
The puzzle was invented in 1974 by Hungarian Architect Erno Rubik.
There are 43 quintillion ways to scramble the cube, according to its website.
It took Rubik a month to figure it out himself.
Google honored the Rubik's cube anniversary with an interactive Google Doodle, where you can try to work the puzzle yourself.