Rubik’s Cube

The Rubik’s Cube is a 3-D mechanical puzzle invented in 1974[1] by Hungarian sculptor and professor of architecture Ernő Rubik. Originally called the “Magic Cube”,[2] the puzzle was licensed by Rubik to be sold by Ideal Toys in 1980[3] and won the German Game of the Year special award for Best Puzzle that year. As of January 2009, 350 million cubes have sold worldwide[4][5] making it the world’s top-selling puzzle game.[6][7] It is widely considered to be the world’s best-selling toy.[8]

In a classic Rubik’s Cube, each of the six faces is covered by nine stickers, among six solid colours (traditionally white, red, blue, orange, green, and yellow).[9] A pivot mechanism enables each face to turn independently, thus mixing up the colours. For the puzzle to be solved, each face must be a solid colour. Similar puzzles have now been produced with various numbers of stickers, not all of them by Rubik. The original 3×3×3 version celebrates its thirtieth anniversary in 2010.

File:Rubik's cube.svg

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