The Cubes
A Rubik's Cube is a plastic cube with its surface subdivided so that each face consists of nine squares. Each face can be rotated, giving the appearance of an entire slice of the block rotating upon itself. This gives the impression that the cube is made up of 27 smaller cubes (3 × 3 × 3). In its original state each side of the Rubik's Cube is a different color, but the rotation of each face allows the smaller cubes to be rearranged in many different ways.
The challenge is to return the Cube from any state to its original state, in which each face consists of nine squares of a single colour.
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