Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 49. Chapters: Speedcubing, N-dimensional sequential move puzzle, Optimal solutions for Rubik's Cube, Rubik's Revenge, Professor's Cube, Square One, V-Cube 6, Rubik's Cube in popular culture, V-Cube 7, Rubik's cube group, Pyramorphix, Megaminx, Nicolas Hammond, Dogic, Ern Rubik, Helicopter Cube, Pyraminx, God's algorithm, Rubik's Games, Rubik, the Amazing Cube, Rubik's Revolution, Void Cube, Pocket Cube, Pyraminx Crystal, RuBot II, Impossiball, Skewb Ultimate, Fridrich Method, Sudoku Cube, David Singmaster, World Cube Association, Monir Amerkhous, Skewb Diamond, 1982 World Rubik's Cube Championship, The Simple Solution to Rubik's Cube, 4D8 Puzzle, 2003 World Rubik's Games Championship, Matyas Kuti. Excerpt: The Rubik's Cube is a 3-D mechanical puzzle invented in 1974 by Hungarian sculptor and professor of architecture Ern Rubik. Originally called the "Magic Cube," the puzzle was licensed by Rubik to be sold by Ideal Toy Corp. in 1980 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 making it the world's top-selling puzzle game. It is widely considered to be the world's best-selling toy. 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). 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 3x3x3 version celebrated its thirtieth anniversary in 2010. In March 1970, Larry Nichols invented a 2x2x2 "Puzzle with Pieces Rotatable in Groups" and filed a Canadian patent application for it. Nichols's cube was held together with...