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

A gamer plays with Rubik’s Magic Cube at the international game fair ‘SPIEL’ in Essen, Germany, on Oct. 26, 2017. (AP Photo/Martin Meissner, File)

Professor Ernő Rubik, inventor of Rubik’s Cube, is photographed in New York on Sept. 18, 2018. Rubik has seen his color-matching puzzle go from a classroom teaching tool in Cold War-era Hungary to a worldwide phenomenon with over 450 million cubes sold and a mini-empire of related toys. (AP Photo/Richard Drew, File)

NEW YORK — 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.