<P> The maximum number of face turns needed to solve any instance of the Rubik 's Cube is 20 , and the maximum number of quarter turns is 26 . These numbers are also the diameters of the corresponding Cayley graphs of the Rubik 's Cube group . In STM ( slice turn metric ) it 's unknown . </P>
max number of moves to solve rubik 's cube
maximum number of face turns needed to solve any instance of the Rubik 's Cube is 20 , and the maximum number of quarter turns is 26