I have read a few weeks ago that some mathematical researchers have discover that the minimum number of movements to solve any initial configuration of a Rubik's cube has been downsized to 20.
How do they calculate such a number ?
Thanks.
I have read a few weeks ago that some mathematical researchers have discover that the minimum number of movements to solve any initial configuration of a Rubik's cube has been downsized to 20.
How do they calculate such a number ?
Thanks.
See the discussion and references on the associated Wikipedia page Optimal solutions for Rubik's Cube