Rubik, signs a Rubik’s cube during an event to mark the 40th anniversary of the puzzle toy in Jersey City

Rubik, signs a Rubik’s cube during an event to mark the 40th anniversary of the puzzle toy in Jersey City

Erno Rubik, signs a Rubik’s cube during an event to mark the 40th anniversary of the puzzle toy in Jersey City, New Jersey, April 26, 2014. REUTERS/Eduardo Munoz (UNITED STATES – Tags: SOCIETY ANNIVERSARY)