: A prime symbol denotes a counter-clockwise turn, and a '2' indicates a 180-degree double turn. 2. Reduction Phase Algorithms The goal of reduction is to transform the cube into a 3x3 state. Centers (Phase 1)
Group all center pieces of the same color together. On a 3x3, centers are fixed. On an NxNxN, they slide around. xnxnxnxn cube algorithms pdf nxnxn rubik cube hot