Sudoku Cube 3x3 (Master)

Sudoku Cube 3x3 is offered in three versions of varying difficulty! 

Challenge - Each center has a different color, each corner is one solid color, each edge is one solid color, and each face has 9 different color pieces

Wisdom - Two centers have the same colors, each corner has three colors, and each edge is one solid color, each face has 9 different color pieces

Master - Each center has a different color, each corner has three colors, each edge has two colors, and each face has 9 different color pieces

Goal: Return the scrambled cube to its starting position.