algorithm - What is the Official notation on rubik's revenge(4x4)? - Puzzling Stack Exchange
4x4 OLL Parity Algorithms
Rubik's Revenge - Wikipedia
u2 - l2 - U2 - L2 - l2 - U2 - l2 - u2 - F' - U' - F - U - F - R' - F2 - U - F - U - F' - U' - … | Rubiks cube algorithms, Rubiks cube patterns, Rubiks cube solution