Can you solve the most popular puzzle in the world? There it is, sitting in front of you, a simple, innocuous cube, each side a different colour. You’ve seen everyone do it — they mix up the sides, then unscramble them again so that each side is a single solid color, and sometimes they do it in as little as seconds. Think you can beat their time? Watch out, the original Rubik’s Cube 3×3 is much harder than it looks. And once you start, you’ll never put down this addictive puzzle again.