Kunkle and Cooperman used a supercomputer to figure this out, but their effort also required some clever maths. This is because there are a mind-numbing 43 quintillion (43,000,000,000,000,000,000) possible configurations for a cube - too many for even the most powerful machine to analyse one after the other.Click through to find out how. But wait, there's more:
So the pair simplified the problem in several ways.
This isn't the end of the matter, though. Most mathematicians think it really only takes 20 moves to solve any Rubik's cube - it's just a question of proving this to be true.You have your mission, Forrest.