"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." With an ever expanding number of cube sizes, the infusion of new games and puzzles in the spirit of the ...

Mathematicians and hobbyists have had a half-century of fun exploring the 43 billion billion permutations of Erno Rubik’s creation. “My method was understanding,” Erno Rubik said of the iconic twisty ...