Flutterby™! : Rubik's Cube solved in < 20 moves

Rubik's Cube has been provably solved in 20 moves or less for all positions:

With about 35 CPU-years of idle computer time donated by Google, a team of researchers has essentially solved every position of the Rubik's Cube™, and shown that no position requires more than twenty moves. We consider any twist of any face to be one move (this is known as the half-turn metric.)