Published Date May 28, 2022 Category General Page Count 13 PDF File Size 9.32 MB File Language English Original File Source ruwix.com

The Rubik’s Revenge and the Professor’s Cube are both extensions of the Rubik’s Cube. It is made up of five rotating slices, resulting in a total of 98 cubies: eight corner cubies (each with three stickers), 36 edge cubies (2 stickers), and 54 remaining centre cubies (one sticker only).

At first glance, the Professor’s Cube appears to have one striking feature in common with the Rubik’s Cube: one cubie in each face, namely the most central one, is fixed.

Algorithms for Rubik’s nxnxn Cube

The ‘even cube’ always has eight corner cubies (3 possible orientations), whereas the number of edges and centres is determined by n. It’s not difficult to double-check that the number of centres and edges is equal. The number of centre cubies is c= 6(n-2)2,(5), whereas the number of edges is c= 12(n-2). (six) We have c=e= 24 in the special case of Rubik’s Revenge (n= 4). It’s worth noting that in the limit case n= 2, we get a cube with no edges or centres (only corners! ), which is precisely the case of the 2 ×2×2 or Pocket Cube.