Any Rubik's Cube can be solved in 20 moves, but it took over 30 years for anyone to figure that out

In 2010, a group of mathematicians used a bank of supercomputers at Google to show any Rubik's Cube could be solved in 20 moves.
The Columbian

Rubik’s Cube inventor says break solution into steps

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. “Problem solving is ...