4 ms·
The maximum number of face turns needed is 20, and the maximum number of quarter turns is 26.
by throwaway37585 8y ago
The maximum number of face turns needed is 20, and the maximum number of quarter turns is 26.
- peapicker 8y agoWould have been nice if they mentioned the quarter-turn metric, and hadn't said "moves" then, which in speedcubing almost always refers to face turns. Especially when the article they linked to was regarding face turns as well. Both of course are mentioned at cube20.org ... http://www.cube20.org/ http://www.cube20.org/
- kshcon 8y agoThey clearly refer to quarter-turn metric: “Finally, in 2014, it was shown that any valid cube can be optimally solved with at most 26 moves in the quarter-turn metric, or 20 moves in the half-turn metric [26, 25]. The quarter-turn metric treats 180 degree rotations as two moves, whereas the half-turn metric treats 180 degree rotations as one move. For the remainder of this paper we will be using the quarter-turn metric.”