Rubik’s Cube, 3D Combination Puzzle
Rubik’s Cube is a 3D combination puzzle. Which is discovered by Hungarian sculptor and professor of architecture Ernő Rubik in 1974. Essentially called the Magic Cube, the puzzle was approved by Rubik to be sold by Ideal Toy Corp. It had been won the German Game of the Year special award for Best Puzzle that year. As of January 2009, 350 million cubes had been sold in the whole world. Which has made it the world’s best-selling puzzle game. It is widely considered to be the world’s top-selling toy.
How looks like it is
In a standard Rubik’s Cube, each of the six faces is covered by nine stickers. It has got one of six solid colors: white, red, blue, orange, green, and yellow. But now, it sold with several models, blue is opposite green, white is opposite yellow and orange is opposite red, and the red, white and blue are organized in that order in a clockwise arrangement. At the first stage of the cube, the position of the colors varied from cube to cube. For the puzzle to be solved, each face must be turned to have only one color. Now similar puzzles have been formed with several numbers of sides, stickers, and dimensions not all of them by Rubik.
Mechanics of Rubik’s cube
A standard Rubik’s Cube measures 5.7 cm (approximately 2 ¼ inches) on every side. The puzzle consists of twenty-six identical miniature cubes. It also called “cubies” or “cubelets. However, the midpoint of the cube, each of the six faces is merely a single square frontage. All six are attached to the core mechanism. These structures provide for the other pieces to fit into and rotate around. So there are twenty-one pieces: a single core piece containing three dividing axes holding the six center squares in place but letting them rotate. Twenty smaller plastic pieces fit into it to form the combined puzzle.
The Cube can be taken separately without much difficulty, typically by rotating the top layer by 45°. Therefore, it is an easy way to “solve” a Cube by taking it apart and reassembling it in a solved state.
World best records
Single time: Present world record for single time on a 3×3×3 Rubik’s Cube was established by Lucas Etter of the United States in November 2015 with a time of 4.90 seconds at the River Hill Fall in Clarksville, Maryland in 2015 competition.
Average time: The world record for average time per resolve was established by Feliks Zemdegs at the WLS Lato 2016 (Warsaw), with a 6.45 second.
One-handed solving: The earliest single time of solving the cube with one hand is 6.88 seconds by Feliks Zemdegs at the Canberra Autumn 2015. The earliest average time of 10.70 seconds was also made by Feliks at the Euro 2016.
Feet solving: Jakub Kipa has solved a Rubik’s Cube with his feet in 20.57 seconds at the Radomsko Cube Theory 2015.
Group solving: The best record for group solving a Rubik’s Cube at once in twelve minutes is 134, by schoolboys from Dr. Challoner’s Grammar School, Amersham, England on 17 March 2010. Which has broken the previous Guinness World Record of 96 people at once.