The different elements of the Rubik's Cube are identified in this way:
• edge cubes: the twelve cubes in the middle of every edge of the Cube, anyone has the colors of a couple of different faces;
• corner cubes: the eight cubes at the corners of the Cube and have the colors of three faces on different axis;
• central cubes or central pieces: the six fixed cubes in the center of every face. Anyone has the color of a different face;
Sometimes a face of the Cube will be called with the color of its central cube, that is a unique identifier for every face without relativity on the position.
When we talk about correct position for a corner or an edge we intend the fact that is in its final position. The solving of the cube has many popular methods such as Layer by Layer method, Lars Petrus method, Memo method etc.
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