Rubik 's Cube - Wikipedia Rubik 's Cube Rubik 's Cube Other names Magic Cube, Speed Cube, Puzzle Cube Type Combination puzzle Inventor Ernő Rubik Company Rubik 's Brand Ltd Country Hungary Availability 1977 : as Hungarian Magic Cube, first test batches released in Budapest 1980 : as Rubik 's Cube, worldwide -- present Official website Rubik 's Cube is a 3 - D combination puzzle invented in 1974 by Hungarian sculptor and professor of architecture Ernő Rubik. Originally called the Magic Cube, the puzzle was licensed by Rubik to be sold by Ideal Toy Corp. in 1980 via businessman Tibor Laczi and Seven Towns founder Tom Kremer, 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 making it the world 's top - selling puzzle game. It is widely considered to be the world 's best - selling toy. 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. 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. On early cubes, the position of the colours varied from cube to cube. 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 other twisty puzzles and 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 kept the official world records. Contents 1 Conception and development 1.1 Prior attempts 1.2 Rubik 's invention 2 Subsequent history 2.1 1980s Cube craze 2.2 21st - century revival 3 Imitations 3.1 Patent history 3.2 Trademarks 4 Mechanics 5 Mathematics 5.1 Permutations 5.2 Centre faces 5.3 Algorithms 5.4 Relevance and application of mathematical group theory 6 Solutions 6.1 Move notation 6.2 Optimal solutions 6.3 Speedcubing methods 6.4 Beginner 's method 6.5 Rubik 's Cube solver program 7 Competitions and records 7.1 Speedcubing competitions 7.2 Records 7.3 Top 6 solvers by single solve 7.4 Top 5 solvers by average of 5 solves 8 Variations 8.1 Custom - built puzzles 8.2 Rubik 's Cube software 8.3 Chrome Cube Lab 9 Popular culture 10 See also 11 References 12 Further reading 13 External links Conception and development Prior attempts Diagram from Nichols ' patent showing a cube held together with magnets In March 1970, Larry D. Nichols invented a 2 × 2 × 2 `` Puzzle with Pieces Rotatable in Groups '' and filed a Canadian patent application for it. Nichols 's cube was held together by magnets. Nichols was granted U.S. Patent 3,655,201 on April 11, 1972, two years before Rubik invented his Cube. On April 9, 1970, Frank Fox applied to patent his `` Spherical 3 × 3 × 3 ''. He received his UK patent ( 1344259 ) on January 16, 1974. Rubik 's invention Packaging of Rubik 's Cube, Toy of the year 1980 -- Ideal Toy Corp., made in Hungary In the mid-1970s, Ernő Rubik worked at the Department of Interior Design at the Academy of Applied Arts and Crafts in Budapest. Although it is widely reported that the Cube was built as a teaching tool to help his students understand 3D objects, his actual purpose was solving the structural problem of moving the parts independently without the entire mechanism falling apart. He did not realise that he had created a puzzle until the first time he scrambled his new Cube and then tried to restore it. Rubik obtained Hungarian patent HU170062 for his `` Magic Cube '' in 1975. Rubik 's Cube was first called the Magic Cube ( Bűvös kocka ) in Hungary. The first test batches of the Magic Cube were produced in late 1977 and released in Budapest toy shops. Magic Cube was held together with interlocking plastic pieces that prevented the puzzle being easily pulled apart, unlike the magnets in Nichols 's design. With Ernő Rubik 's permission, businessman Tibor Laczi took a Cube to Germany 's Nuremberg Toy Fair in February 1979 in an attempt to popularise it. It was noticed by Seven Towns founder Tom Kremer and they signed a deal with Ideal Toys in September 1979 to release the Magic Cube worldwide. Ideal wanted at least a recognisable name to trademark ; of course, that arrangement put Rubik in the spotlight because the Magic Cube was renamed after its inventor in 1980. The puzzle made its international debut at the toy fairs of London, Paris, Nuremberg and New York in January and February 1980. After its international debut, the progress of the Cube towards the toy shop shelves of the West was briefly halted so that it could be manufactured to Western safety and packaging specifications. A lighter Cube was produced, and Ideal decided to rename it. `` The Gordian Knot '' and `` Inca Gold '' were considered, but the company finally decided on `` Rubik 's Cube '', and the first batch was exported from Hungary in May 1980. Subsequent History See also : Rubik 's Cube in popular culture 1980s Cube craze After the first batches of Rubik 's Cubes were released in May 1980, initial sales were modest, but Ideal began a television advertising campaign in the middle of the year which it supplemented with newspaper adverts. At the end of 1980 Rubik 's Cube won a German Game of the Year special award, and won similar awards for best toy in the UK, France, and the US. By 1981 Rubik 's Cube had become a craze, and it is estimated that in the period from 1980 to 1983 around 200 million Rubik 's Cubes were sold worldwide. In March 1981 the first speedcubing championship organised by the Guinness Book of World Records was held in Munich, and a Rubik 's Cube was depicted on the front cover of Scientific American that same month. In June 1981 The Washington Post reported that the Rubik 's Cube is `` a puzzle that 's moving like fast food right now... this year 's Hoola Hoop or Bongo Board '', and by September 1981 New Scientist noted that the cube had `` captivated the attention of children of ages from 7 to 70 all over the world this summer. '' As most people could only solve one or two sides, numerous books were published including David Singmaster 's Notes on Rubik 's `` Magic Cube '' ( 1980 ) and Patrick Bossert 's You Can Do the Cube ( 1981 ). At one stage in 1981 three of the top ten best selling books in the US were books on solving the Rubik 's Cube, and the best - selling book of 1981 was James G. Nourse 's The Simple Solution to Rubik 's Cube which sold over 6 million copies. In 1981 the Museum of Modern Art in New York exhibited a Rubik 's Cube, and at the 1982 World 's Fair in Knoxville, Tennessee a six - foot Cube was put on display. ABC Television even developed a cartoon show called Rubik, the Amazing Cube. In June 1982 the First Rubik 's Cube World Championship took place in Budapest, and would become the only competition recognized as official until the championship was revived in 2003. In October 1982 The New York Times reported that sales had fallen and that `` the craze has died '', and by 1983 it was clear that sales had plummeted. However, in some Communist countries, such as China and USSR, the craze had started later and demand was still high because of a shortage of Cubes. 21st - century revival Rubik 's Cubes continued to be marketed and sold throughout the 1980s and 90s, but it was not until the early 2000s that interest in the Cube began increasing again. In the US sales doubled between 2001 and 2003, and The Boston Globe remarked that it was `` becoming cool to own a Cube again ''. The 2003 World Rubik 's Games Championship was the first speedcubing tournament since 1982. It was held in Toronto and was attended by 83 participants. The tournament led to the formation of the World Cube Association in 2004. Annual sales of Rubik branded cubes were said to have reached 15 million worldwide in 2008. Part of the new appeal was ascribed to the advent of Internet video sites, such as YouTube, which allowed fans to share their solving strategies. Following the expiration of Rubik 's patent in 2000, other brands of cubes appeared, especially from Chinese companies. Many of these Chinese branded cubes have been engineered for speed and are favoured by speedcubers. Imitations Taking advantage of an initial shortage of Cubes, many imitations and variations appeared, many of which may have violated one or more patents. Today, the patents have expired and many Chinese companies produce copies of, and in nearly all cases, improvements upon, the Rubik and V - Cube designs. Patent History Nichols assigned his patent to his employer Moleculon Research Corp., which sued Ideal in 1982. In 1984, Ideal lost the patent infringement suit and appealed. In 1986, the appeals court affirmed the judgment that Rubik 's 2 × 2 × 2 Pocket Cube infringed Nichols 's patent, but overturned the judgment on Rubik 's 3 × 3 × 3 Cube. Even while Rubik 's patent application was being processed, Terutoshi Ishigi, a self - taught engineer and ironworks owner near Tokyo, filed for a Japanese patent for a nearly identical mechanism, which was granted in 1976 ( Japanese patent publication JP55 - 008192 ). Until 1999, when an amended Japanese patent law was enforced, Japan 's patent office granted Japanese patents for non-disclosed technology within Japan without requiring worldwide novelty. Hence, Ishigi 's patent is generally accepted as an independent reinvention at that time. Rubik applied for more patents in 1980, including another Hungarian patent on October 28. In the United States, Rubik was granted U.S. Patent 4,378,116 on March 29, 1983, for the Cube. This patent expired in 2000. Greek inventor Panagiotis Verdes patented a method of creating cubes beyond the 5 × 5 × 5, up to 11 × 11 × 11, in 2003. As of 2017, the 5 × 5 × 5, 6 × 6 × 6, 7 × 7 × 7, 8 × 8 × 8 and 9 × 9 × 9 models are in production in his `` V - Cube '' line. V - Cube also produces a 2 × 2 × 2, 3 × 3 × 3 and a 4 × 4 × 4. Trademarks Rubik 's Brand Ltd. also holds the registered trademarks for the word Rubik and Rubik 's and for the 2D and 3D visualisations of the puzzle. The trademarks have been upheld by a ruling of the General Court of the European Union on 25 November 2014 in a successful defence against a German toy manufacturer seeking to invalidate them. However, European toy manufacturers are allowed to create differently shaped puzzles that have a similar rotating or twisting functionality of component parts such as for example Skewb, Pyraminx or Impossiball. On 10 November 2016, Rubik 's Cube lost a ten - year battle over a key trademark issue. The European Union 's highest court, the Court of Justice ruled that the puzzle 's shape was not sufficient to grant it trademark protection. Mechanics Rubik 's Cube partially disassembled Rubik 's Cube fully disassembled A standard Rubik 's Cube measures 5.7 centimetres ( 2 ⁄ in ) on each side. The puzzle consists of twenty - six unique miniature cubes, also called `` cubies '' or `` cubelets ''. Each of these includes a concealed inward extension that interlocks with the other cubes while permitting them to move to different locations. However, the centre cube of each of the six faces is merely a single square façade ; all six are affixed to the core mechanism. These provide structure for the other pieces to fit into and rotate around. So there are twenty - one pieces : a single core piece consisting of three intersecting axes holding the six centre squares in place but letting them rotate, and twenty smaller plastic pieces which fit into it to form the assembled puzzle. Each of the six centre pieces pivots on a screw ( fastener ) held by the centre piece, a `` 3D cross ''. A spring between each screw head and its corresponding piece tensions the piece inward, so that collectively, the whole assembly remains compact, but can still be easily manipulated. The screw can be tightened or loosened to change the `` feel '' of the Cube. Newer official Rubik 's brand cubes have rivets instead of screws and can not be adjusted. The Cube can be taken apart without much difficulty, typically by rotating the top layer by 45 ° and then prying one of its edge cubes away from the other two layers. Consequently, it is a simple process to `` solve '' a Cube by taking it apart and reassembling it in a solved state. There are six central pieces which show one coloured face, twelve edge pieces which show two coloured faces, and eight corner pieces which show three coloured faces. Each piece shows a unique colour combination, but not all combinations are present ( for example, if red and orange are on opposite sides of the solved Cube, there is no edge piece with both red and orange sides ). The location of these cubes relative to one another can be altered by twisting an outer third of the Cube 90 °, 180 ° or 270 °, but the location of the coloured sides relative to one another in the completed state of the puzzle can not be altered : it is fixed by the relative positions of the centre squares. However, Cubes with alternative colour arrangements also exist ; for example, with the yellow face opposite the green, the blue face opposite the white, and red and orange remaining opposite each other. Douglas Hofstadter, in the July 1982 issue of Scientific American, pointed out that Cubes could be coloured in such a way as to emphasise the corners or edges, rather than the faces as the standard colouring does ; but neither of these alternative colourings has ever become popular. Mathematics Permutations The current colour scheme of a Rubik 's Cube The original ( 3 × 3 × 3 ) Rubik 's Cube has eight corners and twelve edges. There are 8 ! ( 40,320 ) ways to arrange the corner cubes. Each corner has three possible orientations, although only seven ( of eight ) can be oriented independently ; the orientation of the eighth ( final ) corner depends on the preceding seven, giving 3 ( 2,187 ) possibilities. There are 12 ! / 2 ( 239,500,800 ) ways to arrange the edges, restricted from 12 ! because edges must be in an even permutation exactly when the corners are. ( When arrangements of centres are also permitted, as described below, the rule is that the combined arrangement of corners, edges, and centres must be an even permutation. ) Eleven edges can be flipped independently, with the flip of the twelfth depending on the preceding ones, giving 2 ( 2,048 ) possibilities. 8 ! × 3 7 × ( 12 ! / 2 ) × 2 11 = 43, 252, 003, 274, 489, 856, 000 ( displaystyle ( 8 ! \times 3 ^ ( 7 ) \times ( 12 ! / 2 ) \times 2 ^ ( 11 ) ) = 43,252,003,274,489,856,000 ) which is approximately 43 quintillion. The puzzle was originally advertised as having `` over 3,000,000,000 ( three billion ) combinations but only one solution ''. To put this into perspective, if one had as many standard sized Rubik 's Cubes as there are permutations, one could cover the Earth 's surface 275 times. The preceding figure is limited to permutations that can be reached solely by turning the sides of the cube. If one considers permutations reached through disassembly of the cube, the number becomes twelve times as large : 8 ! × 3 8 × 12 ! × 2 12 = 519, 024, 039, 293, 878, 272, 000. ( displaystyle ( 8 ! \times 3 ^ ( 8 ) \times 12 ! \times 2 ^ ( 12 ) ) = 519,024,039,293,878,272,000. ) which is approximately 519 quintillion possible arrangements of the pieces that make up the Cube, but only one in twelve of these are actually solvable. This is because there is no sequence of moves that will swap a single pair of pieces or rotate a single corner or edge cube. Thus there are twelve possible sets of reachable configurations, sometimes called `` universes '' or `` orbits '', into which the Cube can be placed by dismantling and reassembling it. Centre faces The original Rubik 's Cube had no orientation markings on the centre faces ( although some carried the words `` Rubik 's Cube '' on the centre square of the white face ), and therefore solving it does not require any attention to orienting those faces correctly. However, with marker pens, one could, for example, mark the central squares of an unscrambled Cube with four coloured marks on each edge, each corresponding to the colour of the adjacent face ; a cube marked in this way is referred to as a `` supercube ''. Some Cubes have also been produced commercially with markings on all of the squares, such as the Lo Shu magic square or playing card suits. Cubes have also been produced where the nine stickers on a face are used to make a single larger picture, and centre orientation matters on these as well. Thus one can nominally solve a Cube yet have the markings on the centres rotated ; it then becomes an additional test to solve the centres as well. Marking the Rubik 's Cube 's centres increases its difficulty because this expands the set of distinguishable possible configurations. There are 4 / 2 ( 2,048 ) ways to orient the centres since an even permutation of the corners implies an even number of quarter turns of centres as well. In particular, when the Cube is unscrambled apart from the orientations of the central squares, there will always be an even number of centre squares requiring a quarter turn. Thus orientations of centres increases the total number of possible Cube permutations from 43,252,003,274,489,856,000 ( 4.3 × 10 ) to 88,580,102,706,155,225,088,000 ( 8.9 × 10 ). When turning a cube over is considered to be a change in permutation then we must also count arrangements of the centre faces. Nominally there are 6 ! ways to arrange the six centre faces of the cube, but only 24 of these are achievable without disassembly of the cube. When the orientations of centres are also counted, as above, this increases the total number of possible Cube permutations from 88,580,102,706,155,225,088,000 ( 8.9 × 10 ) to 2,125,922,464,947,725,402,112,000 ( 2.1 × 10 ). Algorithms In Rubik 's cubers ' parlance, a memorised sequence of moves that has a desired effect on the cube is called an algorithm. This terminology is derived from the mathematical use of algorithm, meaning a list of well - defined instructions for performing a task from a given initial state, through well - defined successive states, to a desired end - state. Each method of solving the Rubik 's Cube employs its own set of algorithms, together with descriptions of what effect the algorithm has, and when it can be used to bring the cube closer to being solved. Many algorithms are designed to transform only a small part of the cube without interfering with other parts that have already been solved so that they can be applied repeatedly to different parts of the cube until the whole is solved. For example, there are well - known algorithms for cycling three corners without changing the rest of the puzzle or flipping the orientation of a pair of edges while leaving the others intact. Some algorithms do have a certain desired effect on the cube ( for example, swapping two corners ) but may also have the side - effect of changing other parts of the cube ( such as permuting some edges ). Such algorithms are often simpler than the ones without side - effects and are employed early on in the solution when most of the puzzle has not yet been solved and the side - effects are not important. Most are long and difficult to memorise. Towards the end of the solution, the more specific ( and usually more complicated ) algorithms are used instead. Relevance and application of mathematical group theory Rubik 's Cube lends itself to the application of mathematical group theory, which has been helpful for deducing certain algorithms -- in particular, those which have a commutator structure, namely XYX Y ( where X and Y are specific moves or move - sequences and X and Y are their respective inverses ), or a conjugate structure, namely XYX, often referred to by speedcubers colloquially as a `` setup move ''. In addition, the fact that there are well - defined subgroups within the Rubik 's Cube group enables the puzzle to be learned and mastered by moving up through various self - contained `` levels of difficulty ''. For example, one such `` level '' could involve solving cubes which have been scrambled using only 180 - degree turns. These subgroups are the principle underlying the computer cubing methods by Thistlethwaite and Kociemba, which solve the cube by further reducing it to another subgroup. Solutions Move notation Many 3 × 3 × 3 Rubik 's Cube enthusiasts use a notation developed by David Singmaster to denote a sequence of moves, referred to as `` Singmaster notation ''. Its relative nature allows algorithms to be written in such a way that they can be applied regardless of which side is designated the top or how the colours are organised on a particular cube. F ( Front ) : the side currently facing the solver B ( Back ) : the side opposite the front U ( Up ) : the side above or on top of the front side D ( Down ) : the side opposite the top, underneath the Cube L ( Left ) : the side directly to the left of the front R ( Right ) : the side directly to the right of the front ƒ ( Front two layers ) : the side facing the solver and the corresponding middle layer b ( Back two layers ) : the side opposite the front and the corresponding middle layer u ( Up two layers ) : the top side and the corresponding middle layer d ( Down two layers ) : the bottom layer and the corresponding middle layer l ( Left two layers ) : the side to the left of the front and the corresponding middle layer r ( Right two layers ) : the side to the right of the front and the corresponding middle layer x ( rotate ) : rotate the entire Cube on R y ( rotate ) : rotate the entire Cube on U z ( rotate ) : rotate the entire Cube on F When a prime symbol ( ′ ) follows a letter, it denotes a face turn counter-clockwise, while a letter without a prime symbol denotes a clockwise turn. A letter followed by a 2 ( occasionally a superscript ) denotes two turns, or a 180 - degree turn. R is right side clockwise, but R ' is right side counter-clockwise. The letters x, y, and z are used to indicate that the entire Cube should be turned about one of its axes, corresponding to R, U, and F turns respectively. When x, y or z are primed, it is an indication that the cube must be rotated in the opposite direction. When they are squared, the cube must be rotated 180 degrees. The most common deviation from Singmaster notation, and in fact the current official standard, is to use `` w '', for `` wide '', instead of lowercase letters to represent moves of two layers ; thus, a move of Rw is equivalent to one of r. For methods using middle - layer turns ( particularly corners - first methods ) there is a generally accepted `` MES '' extension to the notation where letters M, E, and S denote middle layer turns. It was used e.g. in Marc Waterman 's Algorithm. M ( Middle ) : the layer between L and R, turn direction as L ( top - down ) E ( Equator ) : the layer between U and D, turn direction as D ( left - right ) S ( Standing ) : the layer between F and B, turn direction as F The 4 × 4 × 4 and larger cubes use an extended notation to refer to the additional middle layers. Generally speaking, uppercase letters ( FBUDLR ) refer to the outermost portions of the cube ( called faces ). Lowercase letters ( fbudlr ) refer to the inner portions of the cube ( called slices ). An asterisk ( L * ), a number in front of it ( 2L ), or two layers in parentheses ( Ll ), means to turn the two layers at the same time ( both the inner and the outer left faces ) For example : ( Rr ) ' l2 f ' means to turn the two rightmost layers anticlockwise, then the left inner layer twice, and then the inner front layer anticlockwise. By extension, for cubes of 6x6 and larger, moves of three layers are notated by the number 3, for example, 3L. An alternative notation, Wolstenholme notation, is designed to make memorising sequences of moves easier for novices. This notation uses the same letters for faces except it replaces U with T ( top ), so that all are consonants. The key difference is the use of the vowels O, A and I for clockwise, anticlockwise and 180 - degree turns, which results in word - like sequences such as LOTA RATO LATA ROTI ( equivalent to LU ′ R ′ UL ′ U ′ RU2 in Singmaster notation ). Addition of a C implies rotation of the entire cube, so ROC is the clockwise rotation of the cube around its right face. Middle layer moves are denoted by adding an M to corresponding face move, so RIM means a 180 - degree turn of the middle layer adjacent to the R face. Another notation appeared in the 1981 book The Simple Solution to Rubik 's Cube. Singmaster notation was not widely known at the time of publication. The faces were named Top ( T ), Bottom ( B ), Left ( L ), Right ( R ), Front ( F ) and Posterior ( P ), with + for clockwise, -- for anticlockwise and 2 for 180 - degree turns. Another notation appeared in the 1982 `` The Ideal Solution '' book for Rubik 's Revenge. Horizontal planes were noted as tables, with table 1 or T1 starting at the top. Vertical front to back planes were noted as book, with book 1 or B1 starting from the left. Vertical left to right planes were noted as windows, with window 1 or W1 starting at the front. Using the front face as a reference view, table moves were left or right, book moves were up or down, and window moves were clockwise or counter-clockwise. Optimal solutions Main article : Optimal solutions for Rubik 's Cube Mountaineer solving Rubik 's Cube during 1982 expedition in Pamir Mountains to peak Tartu Ülikool 350 Although there are a significant number of possible permutations for the Rubik 's Cube, a number of solutions have been developed which allow solving the cube in well under 100 moves. Many general solutions for the Rubik 's Cube have been discovered independently. David Singmaster first published his solution in the book Notes on Rubik 's `` Magic Cube '' in 1981. This solution involves solving the Cube layer by layer, in which one layer ( designated the top ) is solved first, followed by the middle layer, and then the final and bottom layer. After sufficient practice, solving the Cube layer by layer can be done in under one minute. Other general solutions include `` corners first '' methods or combinations of several other methods. In 1982, David Singmaster and Alexander Frey hypothesised that the number of moves needed to solve the Rubik 's Cube, given an ideal algorithm, might be in `` the low twenties ''. In 2007, Daniel Kunkle and Gene Cooperman used computer search methods to demonstrate that any 3 × 3 × 3 Rubik 's Cube configuration can be solved in 26 moves or fewer. In 2008, Tomas Rokicki lowered that number to 22 moves, and in July 2010, a team of researchers including Rokicki, working with Google, proved the so - called `` God 's number '' to be 20. This is optimal, since there exist some starting positions which require a minimum of 20 moves to solve. More generally, it has been shown that an n × n × n Rubik 's Cube can be solved optimally in Θ ( n / log ( n ) ) moves. Speedcubing methods In 1981, thirteen - year - old Patrick Bossert developed a solution for solving the cube, along with a graphical notation, designed to be easily understood by novices. It was subsequently published as You Can Do The Cube and became a best - seller. A solution commonly used by speed cubers was developed by Jessica Fridrich. This method is called `` CFOP, '' standing for `` cross, F2L, OLL, PLL ''. It is similar to the layer - by - layer method but employs the use of a large number of algorithms, especially for orienting and permuting the last layer. The cross is done first, followed by first layer corners and second layer edges simultaneously, with each corner paired up with a second - layer edge piece, thus completing the first two layers ( F2L ). This is then followed by orienting the last layer, then permuting the last layer ( OLL and PLL respectively ). Fridrich 's solution requires learning roughly 120 algorithms but allows the Cube to be solved in only 55 moves on average. Philip Marshall 's The Ultimate Solution to Rubik 's Cube takes a different approach, averaging only 65 twists yet requiring the memorisation of only two algorithms. The cross is solved first, followed by the remaining edges, then five corners, and finally the last three corners. A now well - known method was developed by Lars Petrus. In this method, a 2 × 2 × 2 section is solved first, followed by a 2 × 2 × 3, and then the incorrect edges are solved using a three - move algorithm, which eliminates the need for a possible 32 - move algorithm later. The principle behind this is that in layer - by - layer you must constantly break and fix the first layer ; the 2 × 2 × 2 and 2 × 2 × 3 sections allow three or two layers to be turned without ruining progress. One of the advantages of this method is that it tends to give solutions in fewer moves. The Roux Method, developed by Gilles Roux, is similar to the Petrus method in that it relies on block building rather than layers, but derives from corners - first methods. In Roux, a 3 × 2 × 1 block is solved, followed by another 3 × 2 × 1 on the opposite side. Next, the corners of the top layer are solved. The cube can then be solved using only moves of the U layer and M slice. In 1997, Denny Dedmore published a solution described using diagrammatic icons representing the moves to be made, instead of the usual notation. Beginner 's method Most beginner solution methods involve solving the cube one layer at a time, using algorithms that preserve what has already been solved. The easiest layer by layer methods require only 3 -- 8 algorithms. Rubik 's Cube solver program The most move optimal online Rubik 's Cube solver programs use Herbert Kociemba 's Two - Phase Algorithm which can typically determine a solution of 20 moves or less. The user has to set the colour configuration of the scrambled cube and the program returns the steps required to solve it. Competitions and records Speedcubing competitions Main article : Speedcubing Speedcubing ( or speedsolving ) is the practice of trying to solve a Rubik 's Cube in the shortest time possible. There are a number of speedcubing competitions that take place around the world. The first world championship organised by the Guinness Book of World Records was held in Munich on March 13, 1981. All Cubes were moved 40 times and lubricated with petroleum jelly. The official winner, with a record of 38 seconds, was Jury Froeschl, born in Munich. The first international world championship was held in Budapest on June 5, 1982, and was won by Minh Thai, a Vietnamese student from Los Angeles, with a time of 22.95 seconds. Since 2003, the winner of a competition is determined by taking the average time of the middle three of five attempts. However, the single best time of all tries is also recorded. The World Cube Association maintains a history of world records. In 2004, the WCA made it mandatory to use a special timing device called a Stackmat timer. In addition to the main 3x3x3 event, the WCA also holds events where the cube is solved in different ways : Blindfolded solving Multiple blindfolded solving, or `` multi-blind '', in which the contestant solves any number of cubes blindfolded in a row Solving the Cube using a single hand Solving the Cube with one 's feet Solving the Cube in the fewest possible moves In blindfolded solving, the contestant first studies the scrambled cube ( i.e., looking at it normally with no blindfold ), and is then blindfolded before beginning to turn the cube 's faces. Their recorded time for this event includes both the time spent memorizing the cube and the time spent manipulating it. In multiple blindfolded, all of the cubes are memorised, and then all of the cubes are solved once blindfolded ; thus, the main challenge is memorising many -- often ten or more -- separate cubes. The event is scored not by time but by the number of solved cubes minus the number of unsolved cubes after one hour has elapsed. In fewest moves solving, the contestant is given one hour to find his or her solution and must write it down. Records Single time : The world record time for solving a 3 × 3 × 3 Rubik 's Cube is 4.59 seconds, held jointly by Feliks Zemdegs of Australia set on 27th January 2018 at the Hobart Summer 2018 and by 18 - year - old SeungBeom Cho ( 조승범 ) of South Korea on 28 October 2017 at the ChicaGhosts 2017 competition in Chicago, IL. Average time : The world record average of the middle three of five solve times ( which excludes the fastest and slowest ) is 5.80 seconds, set by Feliks Zemdegs of Australia at the Malaysia Cube Open 2017. One - handed solving : The world record fastest one - handed solve is 6.88 seconds, set by Feliks Zemdegs of Australia on 10 May 2015 at Canberra Autumn 2015. The world record fastest average of five one - handed solves is 9.99 seconds, set by Max Park of United States at Thanks, Four The Invite 2018. Feet solving : The world record fastest Rubik 's Cube solve with one 's feet is 16.96 seconds, set by Daniel Rose - Levine of the United States on 9 March 2018 at Heartland Champs 2018. The world record average of five feet solves is 23.69 seconds, also set by Daniel Rose - Levine on 15 April 2018 at SE Champ 2018. Blindfold solving : The world record fastest Rubik 's Cube solve blindfolded is 17.87 seconds ( including memorization ), set by Max Hilliard of United States on 19 November 2017 at Texas BLD Showdown 2017. The world record mean of three blindfold solves is 22.36 seconds, set by Angelo Zhang of the United States on 18 November 2017 at Longhorn Cube Day 2017. Multiple blindfold solving : The world record for multiple Rubik 's Cube solving blindfolded is 43 out of 44 cubes, set by Mark Boyanowski of the United States on 24 March 2018 at Keep Portland Quiet 2018. Boyanowski inspected 44 cubes, donned a blindfold, and solved 43 of them, all under the time limit of one hour. Fewest moves solving : The world record of fewest moves to solve a cube, given one hour to determine one 's solution, is 19. This has been achieved by Tim Wong of the United States on 11 October 2015 at Irvine Fall 2015, by Marcel Peters of Germany on 9 January 2016 at Cubelonia 2016, and by Vladislav Ushakov of Belarus on 27 August 2016 at PSU Open 2016. The world record mean of three fewest moves challenges ( with different scrambles ) is 24.00, set by Walker Welch of the United States on 15 October 2017 at FMC Americas 2017. Non-human solving : The fastest non-human Rubik 's Cube solve was performed by the Rubik 's Contraption, a robot made by Ben Katz and Jared Di Carlo. A YouTube video shows a 0.38 - second solving time using an Nucleo with the min2phase algorithm. Next record is 0.637 seconds, set by Sub1, a robot made by Adam Beer, an economist and industrial engineer. A YouTube video shows a 0.637 - second solving time. This improves the robot 's old record : 0.887 seconds, performed using an Arduino with the Kociemba algorithm. Next record is 3.25 seconds, set by CubeStormer III, a robot built using Lego Mindstorms and a Samsung Galaxy S4. This beats the prior 5.27 seconds, set by CubeStormer II, a robot built using Lego Mindstorms and a Samsung Galaxy S2. This had in turn broken the previous record of 10.69 seconds, achieved by final year computing students at Swinburne University of Technology in Melbourne, Australia in 2011. Highest order physical n × n × n cube solving : Douglas Shamlin Jr. solved a 17x17x17 in one hour and six seconds. Top 6 solvers by single solve Name Fastest solve Competition SeungBeom Cho ( 조승범 ) 4.59 s ChicaGhosts 2017 Feliks Zemdegs 4.59 s Hobart Summer 2018 Patrick Ponce 4.69 s Ralley in the Valley 2017 Mats Valk 4.74 s Jawa Timur Open 2016 Drew Brads 4.76 s Bluegrass Spring 2017 Bill Wang 4.76 s Pickering Spring 2018 Top 5 solvers by average of 5 solves Name Fastest average Competition Feliks Zemdegs 5.80 s Malaysia Cube Open 2017 Max Park 5.99 s Las Vegas Spring 2018 Patrick Ponce 6.38 s Penn Cube Day Winter 2018 Seung Hyuk Nahm ( 남 승혁 ) 6.43 s China Championship 2017 Kai - Wen Wang ( 王 楷 文 ) 6.51 s Kaohsiung Autumn Open 2017 Group solving ( 12 minutes ) : The record for most people solving a Rubik 's Cube at once in twelve minutes is 134, set on 17 March 2010 by schoolboys from Dr Challoner 's Grammar School, Amersham, England, breaking the previous Guinness World Record of 96 people at once. Group solving ( 30 minutes ) : On November 21, 2012, at the O2 Arena in London, 1414 people, mainly students from schools across London, solved the Rubik 's Cube in under 30 minutes, breaking the previous Guinness World Record of 937. The event was hosted by Depaul UK. On November 4, 2012, 3248 people, mainly students of College of Engineering Pune, successfully solved the Rubik 's cube in 30 minutes on college ground. The successful attempt is recorded in the Limca Book of Records. The college will submit the relevant data, witness statements and video of the event to Guinness authorities. Variations Variations of Rubik 's Cubes. Top row : V - Cube 7, Professor 's Cube, V - Cube 6. Bottom row : Rubik 's Revenge, original Rubik 's Cube, Pocket Cube. Clicking on a cube in the picture will redirect to the respective cube 's page. An 11 × 11 × 11 cube There are different variations of Rubik 's Cubes with up to thirty - three layers : the 2 × 2 × 2 ( Pocket / Mini Cube ), the standard 3 × 3 × 3 cube, the 4 × 4 × 4 ( Rubik 's Revenge / Master Cube ), and the 5 × 5 × 5 ( Professor 's Cube ) being the most well known. The 17 × 17 × 17 `` Over The Top '' cube ( available late 2011 ) was until December 2017 the largest ( and most expensive, costing more than two thousand dollars ) commercially sold cube. A working design for a 22 × 22 × 22 cube exists and was demonstrated in January 2016, and a 33x33 in December 2017. Chinese manufacturer ShengShou has been producing cubes in all sizes from 2 × 2 × 2 to 10 × 10 × 10 ( as of late 2013 ), and have also come out with an 11x11x11. Non-licensed physical cubes as large as 13 × 13 × 13 based on the V - Cube patents are commercially available to the mass - market circa 2015 in China ; these represent about the limit of practicality for the purpose of `` speed - solving '' competitively ( as the cubes become increasingly ungainly and solve - times increase quadratically ). Rubik 's TouchCube There are many variations of the original cube, some of which are made by Rubik. The mechanical products include the Rubik 's Magic, 360, and Twist. Also, electronics like the Rubik 's Revolution and Slide were also inspired by the original. One of the newest 3 × 3 × 3 Cube variants is the Rubik 's TouchCube. Sliding a finger across its faces causes its patterns of coloured lights to rotate the same way they would on a mechanical cube. The TouchCube also has buttons for hints and self - solving, and it includes a charging stand. The TouchCube was introduced at the American International Toy Fair in New York on February 15, 2009. The Cube has inspired an entire category of similar puzzles, commonly referred to as twisty puzzles, which includes the cubes of different sizes mentioned above as well as various other geometric shapes. Some such shapes include the tetrahedron ( Pyraminx ), the octahedron ( Skewb Diamond ), the dodecahedron ( Megaminx ), the icosahedron ( Dogic ). There are also puzzles that change shape such as Rubik 's Snake and the Square One. In 2011, Guinness World Records awarded the `` largest order Rubiks magic cube '' to a 17 × 17 × 17 cube, made by Oskar van Deventer. On 2 December 2017, Grégoire Pfennig announced that he had broken this record, with a 33 × 33 × 33 cube, and that his claim had been submitted to Guinness for verification. On 8 April 2018, Grégoire Pfennig announced another world record, the 2x2x50 cube. Whether this is a replacement for the 33x33x33 record, or an additional record, remains to be seen. All five platonic solid versions of Rubik 's cube Since 2015, with the mass production of the Icosaix, all five platonic solids analogous to Rubik 's cube ( face - turning with cuts one - third from each face, except the Pyraminx, which also has turnable tips ) became available. Besides Rubik 's cube, the tetrahedron is available as the Pyraminx, the octahedron as the Face Turning Octahedron, the dodecahedron as the Megaminx, and the icosahedron as the Icosaix. Some puzzles have also been created in the shape of the Kepler - Poinsot polyhedra, such as Alexander 's Star ( a great dodecahedron ). Custom - built puzzles Novelty keychain Puzzles have been built resembling the Rubik 's Cube or based on its inner workings. For example, a cuboid is a puzzle based on the Rubik 's Cube, but with different functional dimensions, such as 2 × 2 × 4, 2 × 3 × 4, and 3 × 3 × 5. Many cuboids are based on 4 × 4 × 4 or 5 × 5 × 5 mechanisms, via building plastic extensions or by directly modifying the mechanism itself. Some custom puzzles are not derived from any existing mechanism, such as the Gigaminx v1. 5 - v2, Bevel Cube, SuperX, Toru, Rua, and 1 × 2 × 3. These puzzles usually have a set of masters 3D printed, which then are copied using moulding and casting techniques to create the final puzzle. Other Rubik 's Cube modifications include cubes that have been extended or truncated to form a new shape. An example of this is the Trabjer 's Octahedron, which can be built by truncating and extending portions of a regular 3 × 3. Most shape mods can be adapted to higher - order cubes. In the case of Tony Fisher 's Rhombic Dodecahedron, there are 3 × 3, 4 × 4, 5 × 5, and 6 × 6 versions of the puzzle. Rubik 's Cube software Puzzles like the Rubik 's Cube can be simulated by computer software, which provide functions such as recording of player metrics, storing scrambled Cube positions, conducting online competitions, analysing of move sequences, and converting between different move notations. Software can also simulate very large puzzles that are impractical to build, such as 100 × 100 × 100 and 1,000 × 1,000 × 1,000 cubes, as well as virtual puzzles that can not be physically built, such as 4 - and 5 - dimensional analogues of the cube. Magic Cube 4D, a 4 × 4 × 4 × 4 virtual puzzle Magic Cube 5D, a 3 × 3 × 3 × 3 × 3 virtual puzzle Chrome Cube Lab Google has released the Chrome Cube Lab in association with Ernő Rubik. The site has various interactive objects based on Rubik 's Cube. Customised versions of Rubik 's Cube can be created and uploaded. Popular culture Main article : Rubik 's Cube in popular culture See also Pocket Cube ( 2 × 2 × 2 ) Rubik 's Revenge ( 4 × 4 × 4 ) Professor 's Cube ( 5 × 5 × 5 ) V - Cube 6 ( 6 × 6 × 6 ) V - Cube 7 ( 7 × 7 × 7 ) V - Cube 8 ( 8 × 8 × 8 ) CFOP Method n - dimensional sequential move puzzle Octacube ( puzzle ) Pyraminx Rubik, the Amazing Cube Rubik 's Domino Speedcubing Spatial ability Mirror blocks References Jump up ^ William Fotheringham ( 2007 ). Fotheringham 's Sporting Pastimes. Anova Books. p. 50. ISBN 1 - 86105 - 953 - 1. Jump up ^ de Castella, Tom. `` The people who are still addicted to the Rubik 's Cube ''. BBC News Magazine. BBC. Retrieved 28 April 2014. Jump up ^ ' Driven mad ' Rubik 's nut weeps on solving cube... after 26 years of trying, Daily Mail Reporter, January 12, 2009. Jump up ^ Daintith, John ( 1994 ). A Biographical Encyclopedia of Scientists. Bristol : Institute of Physics Pub. p. 771. ISBN 0 - 7503 - 0287 - 9. 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Jump up ^ `` ShengShou puzzles -- China Magic Cube ''. Retrieved 2014 - 08 - 28. Jump up ^ `` Variations ''. Rubik 's. Retrieved 30 December 2012. Jump up ^ `` NY Toy Fair opens with new Rubik 's Cube, Lego deals ''. Reuters. 2009 - 02 - 16. Retrieved 2009 - 03 - 23. Jump up ^ `` Toy Fair Kicks Off at Javits Center ''. Archived from the original on 2009 - 04 - 22. Retrieved 2009 - 03 - 23. Jump up ^ `` Largest Order Rubiks / Magic Cube ''. Guinness World Records. Retrieved 2013 - 01 - 04. Jump up ^ van Deventer, Oskar. `` Over the Top -- 17x17x17 ''. Jump up ^ Greg 's Puzzles ( 8 April 2018 ). `` World Record 2x2x50 Rubik 's Cube ! ! ! : D ''. Retrieved 13 April 2018 -- via YouTube. Jump up ^ Martin, W. Eric. `` Gamebits : Rubik 's Cube... Cubed ''. Games. Issue 199 ( Vol. 28 No. 3 ). p. 4. April 2004. Jump up ^ Melinda Green ( 2009 - 06 - 25 ). `` Magic Cube 4D ''. Superliminal.com. Retrieved 2012 - 06 - 20. Jump up ^ `` Magic Cube 5D ''. Gravitation3d.com. Retrieved 2012 - 06 - 20. Jump up ^ Armstrong, Calvin ; Goldstine, Susan ( September 2014 ). `` Review : Beyond Rubik 's Cube Exhibit ''. The College Mathematics Journal. 45 : 254 -- 256. doi : 10.4169 / college. math. j. 45.4. 254. JSTOR 10.4169 / college. math. j. 45.4. 254. Jump up ^ `` Chrome Cube Lab ''. Google. Retrieved 19 May 2014. Further reading Frey, Alexander ; Singmaster, David ( 1982 ). Handbook of Cubic Math. Enslow. ISBN 0894900587. Rubik, Ernő ; Varga, Tamas ; Keri, Gerson ; Marx, Gyorgy ; Vekerdy, Tamas ( 1987 ). Singmaster, David, ed. Rubik 's Cubic Compendium. Oxford University Press. ISBN 0198532024. Bizek, Hana M. ( 1997 ). Mathematics of the Rubik 's Cube Design. Pittsburgh, Pa : Dorrance Pub. Co. ISBN 0805939199. Slocum, Jerry ; Singmaster, David ; Huang, Wei - Hwa ; Gebhardt, Dieter ; Hellings, Geert ; Rubik, Ernő ( 2009 ). The Cube : The Ultimate Guide to the World 's Bestselling Puzzle. Black Dog & Leventhal. ISBN 157912805X. External links Find more aboutRubik 's Cubeat Wikipedia 's sister projects Definitions from Wiktionary Media from Wikimedia Commons Textbooks from Wikibooks Learning resources from Wikiversity Official website Safecracker Method : Solving Rubik 's Cube with just 10 Numbers Rubik 's Cube at Curlie ( based on DMOZ ) How to solve a Rubik 's Cube on YouTube World Cube Association List of related puzzles and solutions Complete disassembly of a 3 ^ 3 classic Rubik 's cube Speedsolving Wiki `` Rubik 's Cube ''. Google Doodle. Retrieved 2014 - 05 - 19. ( Working model ) Rubik 's Cube Puzzle inventors Ernő Rubik Uwe Mèffert Tony Fisher Panagiotis Verdes Oskar van Deventer Rubik 's Cubes Overview 2 × 2 × 2 ( Pocket Cube ) 3 × 3 × 3 ( Rubik 's Cube ) 4 × 4 × 4 ( Rubik 's Revenge ) 5 × 5 × 5 ( Professor 's Cube ) 6 × 6 × 6 ( V - Cube 6 ) 7 × 7 × 7 ( V - Cube 7 ) 8 × 8 × 8 ( V - Cube 8 ) Cubic variations Helicopter Cube Skewb Square 1 Sudoku Cube Nine - Colour Cube Void Cube Non-cubic variations Tetrahedron Pyraminx Pyraminx Duo Pyramorphix BrainTwist Octahedron Skewb Diamond Dodecahedron Megaminx ( Variations ) Pyraminx Crystal Skewb Ultimate Icosahedron Impossiball Dogic Great dodecahedron Alexander 's Star Truncated icosahedron Tuttminx Cuboid Floppy Cube ( 1x3x3 ) Rubik 's Domino ( 2x3x3 ) Virtual variations ( > 3D ) MagicCube4D MagicCube5D MagicCube7D Magic 120 - cell Derivatives Missing Link Rubik 's 360 Rubik 's Clock Rubik 's Magic Master Edition Rubik 's Revolution Rubik 's Snake Rubik 's Triamid Rubik 's Cheese Renowned solvers Erik Akkersdijk Yu Nakajima Bob Burton, Jr. Jessica Fridrich Chris Hardwick Rowe Hessler Leyan Lo Shotaro Makisumi Toby Mao Tyson Mao Frank Morris Lars Petrus Gilles Roux David Singmaster Ron van Bruchem Eric Limeback Anthony Michael Brooks Mats Valk Feliks Zemdegs Collin Burns Lucas Etter Max Park Solutions Speedsolving Speedcubing Methods Layer by Layer CFOP Method Roux Method Corners First Optimal Mathematics God 's algorithm Superflip Thistlethwaite 's algorithm Rubik 's Cube group Official organization World Cube Association Related articles Rubik 's Cube in popular culture The Simple Solution to Rubik 's Cube 1982 World Rubik 's Cube Championship Hasbro Intellectual properties currently managed by Hasbro Toys Action Man Baby Alive Blythe Easy - Bake Oven Furby G.I. 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Question: who came up with the rubik's cube
Answer: Hungarian sculptor and professor of architecture Ernő Rubik