A Cube With a Twist: At 40, It Puzzles Anew - NYTimes.com
JERSEY CITY — A Rubik’s cube can be twisted and twiddled in 43,252,003,274,489,856,000 different ways, and 43,252,003,274,489,855,999 of them are wrong. Those truths — especially the second, maddeningly frustrating one — have been known since soon after t...