The mind behind the Rubik’s Cube celebrates a lasting puzzle

NEW YORK (AP) — If you’ve ever had trouble solving a Rubik’s Cube, a good piece of advice is to break it down into steps. It’s worth a shot: That advice is from the man who invented it. “Problem solving is a very basic activity of the human mind and if a problem is complex you need to divide the problem into smaller elements,” says Ernő Rubik, who invented the cube in 1974.