Current: 12 order.
Pocket cube
The English official name of the second-order Rubik's Cube is Pocket Rubik's Cube or Mini Cube, and the Chinese literal translation is Pocket Rubik's Cube. It has two squares on each side. One official version of the Rubik's Cube has a side length of 40 mm, and the other axial second-order Rubik's Cube developed by Dong Xian has a side length of 50 mm ... The total variation of the second-order Rubik's Cube is 3,674, 160 or about 3.67× 10 6. Pocket cube, also known as pocket cube, mini cube, small cube and ice cube, has a cube structure of 2×2×2. There are only eight corner blocks in itself, and there are no squares with other structures. The structure is similar to the third-order Rubik's cube, which can be restored by the formula of restoring the third-order Rubik's cube.
Comparison of the size of second-order and third-order Rubik's cube
Rubik's Cube
The English official name of the third-order Rubik's Cube is Rubik's Cube, named after Professor Rubik. It is the most common Rubik's cube at present. It has three squares on each side, the side length of the official version of the Rubik's Cube is 57 mm, and the total variation of the third-order Rubik's Cube is (8! x38x 12！ X212)/(2x2x3) = 4325200327489856000 or 4.3x10/9+09. The left and right third-order Rubik's Cube consists of six central blocks and eight corner blocks connected by a central axis, 65438. The third-order Rubik's cube is the most common in life, but in March of 20 1 1, a new third-order bread cube appeared, which broke the conventional cube design of the third-order Rubik's cube. [ 1]
Rubik's revenge
The English official name of the fourth-order Rubik's Cube Revenge is much more complicated than the third-order Rubik's Cube Revenge. Its composition is divided into two categories. One is that the center is a sphere, and each peripheral small block is connected with the slide rail of the center ball, and will slide in the stress direction on the slide rail when moving. The second is the fourth-order Rubik's cube with the axis as the core. This fourth-order Rubik's Cube is actually a fifth-order Rubik's Cube that hides the middle layer. The small parts inside are the fifth-order side center block and the middle side block, and there are protruding devices on the central shaft to prevent locking. As a racing sport, the fourth-order Rubik's cube with the second structure moves fast and is not easy to get stuck in high-speed rotation. The English official name of the fourth Rubik's cube is Rubik's Revenge, which literally translates as "Revenge of the Rubik's Cube". The side length of the official version is about 67 mm, and the Mefferts version is 60 mm. The fourth-order Rubik's cube is considered to be the most difficult to restore among the second-order and fifth-order Rubiks' cubes. Although there are more varieties of the fifth-order Rubik's cube than the fourth-order, the central block of the fourth-order Rubik's cube is not fixed and cannot be restored by ordinary methods. That is 7401196841564901869874093949857433600000. [2]
Professor's cube
The composition of the fifth-order Rubik's Cube is basically the same as that of the fourth-order Rubik's Cube. There have been three kinds of five-order Rubik's Cube in the world, namely M5 in Dong Xian, China, R5 in Rubik's Cube and V5 in Greek Olympics. It takes a long time to invent a new high-order Rubik's cube, because we should not only consider the feasibility of the project, but also consider whether the Rubik's cube can be used stably for rotation after it is made. It is for this reason that the fifth-order Rubik's Cube is the highest-order Rubik's Cube officially announced, and its structure is beyond the imagination of ordinary enthusiasts.
On September 14, 2008, Zhang Tengyue also said: "I see who can restore the complex five-order Rubik's Cube to six sides with the same color, then his IQ is 200." At the same time, it shows the difficulty of the fifth-order Rubik's cube. The English name of the fifth-order Rubik's Cube is called Professor's Cube, which is literally translated as "Expert's Rubik's Cube", which also shows its great difficulty. The fifth-order Rubik's Cube has 8 corner blocks, 72 side blocks (two types) and 54 center blocks (48 movable and 6 fixed). The structure diagram of the fifth-order Rubik's Cube The central block of the fifth-order Rubik's Cube is 3×3, so the four central blocks of each color are equivalent, that is, the change state of the central block is (24! (4! 6))2 kinds. The positions of its 24 outer blocks cannot be moved at will, so there are always 24! A constantly changing state. 12 The 1 1 of the central side block can be interchanged, so the total * * * is 12! /2×2 1 1 Change the state. The total number of states of the fifth-order Rubik's Cube is 2828709422774 1, 8565318033310715032829365438+. [3]
V cube 6
Six-segment arc structure, better feel. The sixth-order Rubik's Cube is produced by the Greek Olympic Rubik's Cube Company. The corners are slightly larger than the central block, and the edges are slightly rectangular. The evaluation of the Rubik's Cube itself is not very good. The common evaluation is easy POP: it refers to the situation that some parts of the Rubik's Cube are separated from the Rubik's Cube during the restoration process, if it appears as an invalid restoration process in the competition. In order to prevent lock-up, there is a click device inside the box, but it also seriously affects the feel. Turn up one card at a time. Magic friends usually carry out a series of polishing and transformation, which can greatly reduce frustration and reduce many opportunities for pop.
Virtual Rubik's Cube 7
The seventh-order Rubik's Cube is also produced by the Greek Olympic Rubik's Cube Company. At the same time, it has both collection, appreciation and practical value. The square itself is arc or cube. (They are all round, because if they are cubes, there will be corners hanging. )
Eight-order magic square
The eighth-order Rubik's Cube was made by the magic friend of the Rubik's Cube Bar, the big cigarette butt (the fourth-order R structure was changed from the blue seventh order to the eighth order). Although the eighth order is one order lower than the ninth order, the result is more complicated than the ninth order. At present, no manufacturer has mass-produced the eighth-order Rubik's Cube.
Rubik's Cube
The ninth-order Rubik's Cube is produced by Shantou Yongjun Company. The size of the Rubik's Cube is 7.5*7.5*7.5(cm), made of ABS environmental engineering plastic and pvc sticker, and the product weight is about 5 10g.
Tenth to eleventh order
The first batch of 108 Zhisheng 1 1 was officially launched, with a size of about1.7cm and a weight of about1000g. Good anti-pop ability, not easy to fall apart; The middle shaft is made of high-grade nylon material; Fault tolerance is the deviation of one square in a small square, which can be done by L'R' action.
Twelve-order magic square
12 Rubik's Cube The first 12 Rubik's Cube was made by the magic friend "Leslie Le" and released in foreign forums such as TP, but not in domestic forums, so many magic friends didn't know it, and the producer himself didn't show the intention of becoming famous, which was relatively low-key. You can find the related content of 12 in the network video.
Other high-order Rubik's cube
Other higher-order Rubik's Cube, from the analysis of mass production, still does not exist at present. However, among the people who can make or may make their own, there are also very fanatical enthusiasts. Currently appearing on the Internet. According to the video inspection, the highest order Rubik's cube is 17 order Rubik's cube. As you can see in the video, it can rotate normally in all directions, which is amazing. With the increasing power of magic friends, more and more advanced Rubik's Cube can have the opportunity to meet with you.
Special cube
Compared with the original Rubik's cube, the special-shaped Rubik's cube has great changes, but the principle is basically the same. Novices are usually frightened by their strange appearance. In fact, they can generally be regarded as ordinary second-order or third-order Rubik's Cube.
Variant of Rubik's cube
This kind of Rubik's Cube maintains the appearance of the original Rubik's Cube, but it has made various restrictions, so that fans can't successfully restore it in an ordinary way. There are many Rubik's cubes of this type. Here are just a few common Rubik's cubes with characteristics.
Mirror cube
The Mirror cube is called "the mirror of the Rubik's cube", which is the derivative and deformation of the Rubik's cube. We usually call it a "silver mirror".
Cube ". It is characterized by asymmetric appearance and mirror coating, which can change shape. If you study it carefully, you will hit the normal third order and basically restore it. It's good to use it as a desktop gadget. The last Amazon in Japan sold 1494 yen, equivalent to about 104 yuan.
Square 1
Square one, also called Square 1 or SQ 1, was invented by Karel Helsel and Vojtek Kopsky in1992 * *. Its main difficulty lies in that the upper and lower layers of squares are cut into small pieces that can rotate 30 degrees, which can produce a state different from the original square shape. Generally speaking, if you can switch between two classic types of SQ 1 at will, it proves that you have mastered the reduction of SQ 1.
The square 1 Rubik's cube is divided into three layers. There are kite blocks and triangle blocks on the upper and lower floors, also called corner blocks and side blocks. The whole Rubik's Cube always has eight corners and eight sides. Relative to the middle of the layer, the corner block is 60 degrees, and the width of the side block is 30 degrees.
In addition to SQ 1, there are derivative Rubik's Cube of SQ1series.
Piramine
Pyraminx, also known as the Pyramid Rubik's Cube, was invented in 1970 by German scientist Professor Maifete Uwe Maifete. It was originally a model he used to study the pyramid energy (the popular research on "pyramid energy" can keep the center of the apple model fresh for a year). In the process of research, I accidentally invented the magic pyramid. The Rubik's Cube is a regular tetrahedron with four faces and four axes. Pyraminx is a 4-axis 1 order (as shown in the figure), and all tangent angles in the box are 60 degrees. There are other kinds of high-order pyramid Rubik's Cube (of course, it is no longer called Pyraminx).
Skewb cube
Skewb Cube, referred to as "Skewb Cube", was introduced by Mefferts Company. Like Pyraminx, it has four axes, but the difference is that it inherits the structure of a cube. A cube is cut into four isosceles right triangles and a square by an inscribed square, which has five parts. The four corners are called corner blocks, and the small square in the middle is called face blocks. When rotating, rotate along one side of the square, and rotate by one grid 120 degrees.
Asymmetric cube
Asymmetric Rubik's Cube is not a cube, but a state similar to 2x2x3.
Bind Rubik's cube
The bound Rubik's Cube remains in the original Rubik's Cube state, but some restrictions have been made, such as making two adjacent Rubik's Cube into one, so it cannot be restored by the original moving method.
Skewb
Pentagon Rubik's Cube (Pentagon Rubik's Cube)
Megaminx
Dodecahedron variant Rubik's cube
magic ball
The name is magic ball, which is spherical, but basically has a secondary structure.
Siamese Rubik's cube
The conjoined Rubik's Cube connects many ordinary Rubiks' Cube, so there are some restrictions, such as 2x2x2x 10/0.
Magic board
The English name is Magic, which has a plate structure and a double-sided structure. Playing is a fixed step. The front pattern is reversed, confusing and restoring the back pattern. The main test is the player's hand speed. Now the world record has reached less than 0.8 seconds. There are many kinds of magic boards, 2x2 four boards, 2x4 eight boards. If one board is missing, it can become 3x3 times.
Magic watch
It's called Zhong, with a round structure and out of print. What you can buy online is either foreign second-hand goods or domestic cottage products. The magic watch is a "Rubik's cube" with nine clocks and watches on each side. The magic watch has four gears to control the rotation of the hands. There are four buttons on each side, forming a relationship of one in and one out on both sides. The state of the button will affect the rotation of the corresponding gear.
The magic watch is played by dividing the disrupted dial into two sides 12.
Cube 360
"Rubik's Cube 360" is three transparent plastic balls wrapped together and divided into three different layers from the inside out. There are six colored balls in the ball. It looks like a big glass ball covered with bright beads. The rules of the game of this new gadget are simple, but it is difficult to play: players need to shake the big ball and let the small ball inside pass through the middle layer with only two holes, from the innermost layer to the outermost layer. According to the Rubik's Cube itself, playing Rubik's Cube 360 reduces some intellectual thinking time, and more tests the flexibility and decisiveness of players. "I know that after the invention of the Rubik's Cube, many experts have created some formulas, which is undoubtedly an effective means to uncover the mystery of the Rubik's Cube. Many people are even more concise than others. I believe Rubik's Cube 360 will be more popular, because not everyone can.
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Magic cube sticker
Rubik's cube six stickers are usually composed of six colors: red, yellow, blue, green, white and orange. There will be differences in printing methods in different periods and places, but they are basically red on the front, orange on the back, yellow on the top, white on the bottom, Zuo Lan and right green.
Without these restrictions, how many kinds of stickers would there be? The answer is 30. Because of the symmetry of the Rubik's cube, we might as well specify blue as the top surface when pasting. There are five kinds of stickers opposite him, and the remaining four faces form a circle. The four colors of this ring are removed from the rotation, and the same situation has a 3*2 paste method. This is because, for this ring, we can also specify one of the four colors as the front side, the back side has three pasting methods, and the remaining two sides correspond to two pasting methods, so the Rubik's cube sticker has 5*3*2=30 pasting methods.
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Color matching of Rubik's cube
In fact, the Rubik's Cube does not have only one color scheme. It's not the original that is popular now. The original color scheme of the Rubik's Cube is the current Japanese scheme, but the current color scheme is to arrange a pair of colors with similar color systems on opposite sides, while Japan maintains the original color scheme. In fact, there are many other versions of color matching.
The first one is the original color matching made in Hong Kong, which was sold in the 1980s. The difference between most products sold now and it is that brown has turned into orange.
The second type is also made in Hong Kong. It is the same series of Rubik's Cube as the first one, but the color scheme is slightly different.
The third one is made in America, and the color scheme has completely changed, from white to yellow, from blue to green, and from red to orange (the most common color scheme now).
The fourth one is from Hungary, and its color scheme is close to the Rubik's Cube made in America.
The fifth type is made in Japan, which is only blue and white interchangeable with the current "standard color matching". This was originally the color matching when Professor rubik first developed the rubik's Cube, but after it spread to Japan, Rubik listened to the opinions of color researchers and arranged a pair of colors with similar color systems on opposite sides, while Japan kept the original color matching.