Rubik's Cube is a 3-D combination puzzle invented in 1974[1][2] by
Hungarian sculptor and professor of architecture Ernő Rubik. Originally
called the Magic Cube,[3] the puzzle was licensed by Rubik to be sold
by Ideal Toy Corp. in 1980[4] via businessman Tibor Laczi and Seven Towns
founder Tom Kremer,[5] and won the German Game of the Year special
award for Best Puzzle that year. As of January 2009, 350 million cubes had
been sold worldwide[6][7] making it the world's top-selling puzzle game.[8][9] It
is widely considered to be the world's best-selling toy. [10]
On the original classic Rubik's Cube, each of the six faces was covered by
nine stickers, each of one of six solid colours: white, red, blue, orange,
green, and yellow. The current version of the cube has been updated to
coloured plastic panels instead, which prevents peeling and fading. [11] In
currently sold models, white is opposite yellow, blue is opposite green, and
orange is opposite red, and the red, white and blue are arranged in that
order in a clockwise arrangement.[12] On early cubes, the position of the
colours varied from cube to cube.[13] An internal pivot mechanism enables
each face to turn independently, thus mixing up the colours. For the puzzle
to be solved, each face must be returned to have only one colour. Similar
puzzles have now been produced with various numbers of sides,
dimensions, and stickers, not all of them by Rubik.
Although the Rubik's Cube reached its height of mainstream popularity in
the 1980s, it is still widely known and used. Many speedcubers continue to
practice it and similar puzzles; they also compete for the fastest times in
various categories. Since 2003, the World Cube Association, the Rubik's
Cube's international governing body, has organised competitions worldwide
and recognise world records.