Rubik's cube

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The Rubik's Cube is a 3D puzzle created by Erno Rubik in 1974. A Rubik's Cube starts off scrambled and is solved when all of the squares on each face are of the same color. Since its international launch in 1980 there have been approximately 350 million Rubik's Cubes sold. Today, about one out of every seven people alive have used a Rubik's Cube. (http://www.rubiks.com/about/the-history-of-the-rubiks-cube)

Speedcubing[edit]

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