The 5x5 (Professor's Cube) is a 3-D combination puzzle, a 5×5×5 version of the original Rubik's Cube. It has qualities in common with both the 3×3×3 Rubik's Cube and the 4×4×4 Rubik's Revenge. The ability to know to solve 3x3x3 Rubik's Cube will help, but it is recommended to know both Cubes to be able to solve the Professor's Cube.
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