The term RUBIK'S CUBE refers to a 3-dimensional combination puzzle invented in 1974 by Hungarian sculptor and professor of architecture Ernő Rubik. The CUBE consists of six faces, each of which is covered by nine stickers, among six solid colors. The goal of the puzzle is to rotate the faces of the CUBE so that each face only contains one color. It has become one of the world's best-selling toys, with over 350 million cubes sold worldwide.