<P> A disassembled Eastsheen cube </P> <P> The original Professor's Cube is inherently more delicate than the 3 × 3 × 3 Rubik's Cube because of the much greater number of moving parts . Because of the fragile design the Professor's Cube is not suitable for speedcubing . Applying excessive force to the cube when twisting it may result in broken pieces . Both the Eastsheen 5 × 5 × 5 and the V - Cube 5 are designed with different mechanisms in an attempt to remedy the fragility of the original design . </P> <P> There are 98 pieces on the exterior of the cube: 8 corners, 36 edges, and 54 centers (48 movable, 6 fixed). </P> <P> Any permutation of the corners is possible, including odd permutations, giving 8! possible arrangements . Seven of the corners can be independently rotated, and the orientation of the eighth depends on the other seven, giving 3 (or 2,187) combinations . </P>

How many cubes are in a 5x5x5 cube