Rubik's cube

Rubik's cube - a mechanical puzzle, invented in 1974 by Hungarian sculptor and architecture professor Ernő Rubik. It consists of 26 small cubes, rotating on the nucleus, which is not visible from the outside. Each of the nine visible wall in one of the six sides of a Rubik's cube, is one of six colors: red, orange, white, blue, yellow and red. The main task is to clean up the game cube so that each of the six walls are one color.

Rubik Cube's popularity reached its highest point and has become a pop culture symbol of the twentieth century, the early 9. Alone from 1980 to 1982 has sold more than 100 million cubes. 1980 and 1981, the Rubik's cube was Batra Toy of the Year award as the best toy. Soon appeared a lot of similar puzzles. Three of the shape of a cube (Pocket Cube (2 × 2 × 2 Rubik's cube version), a Rubik's revenge (4 × 4 × 4) and the Professor Cube (5 × 5 × 5)), but there are other different shapes: tetrahedron, a pyramid ball, etc. t
In 1981, twelve years old student from Great Britain Bosertas Patrick (Patrick Bossert) published a book with your own solution to the name of You Can Do the Cube. Around the world, has sold more than 1.5 million copies of this book.
Between 1983 and 1984, Hanna-Barbera created 12 episodes of an animated movie called Rubik, The Amazing Cube.

Is devised many ways to turn a Rubik's cube. The most popular method was developed (David Singmaster and written in the book Notes on Rubik's Magic Cube. Under this method, the cube is processed layer by layer: collect the top, sides and bottom.
Speed cubing (cube fast arrangement) method was developed for the cube that can be completed in the shortest delays possible. This, the quickest way to clean, has Jessica Fridrich.
There are estimated to be of any size 3x3 Rubik's Cube can resolve the situation after turning 20 or less.