In the 1980s, one of the most popular puzzles was the 3 x 3 Magic Cube, better known as Rubik’s Cube. Since then, puzzles with increasing complexity have been introduced.
The cube is like any other puzzle—easy to solve when you know how, impossible when you don’t.
In about six minutes, you can view the 7½-hour solution to the amazing 17 x 17 cube.
