This popular three-dimensional geometric puzzle is composed of 26 outer cubes of different colors. The Rubik’s cube was invented in 1974 by Ernő Rubik, a Hungarian sculptor and professor of architecture who built the cube for his students to think about its internal mechanism. They had to ask themselves the question: what is the internal mechanism that allows the cubes to rotate on three axes and still remain together. The first prototype, was composed of 26 small cubes and a center, the whole was carved out of wood. Each layer of 9 cubes could rotate, without moving the others...
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