When is the fastest time to play Rubik's Cube?

All kinds of special-shaped Rubik's Cube developed by people are more difficult to play. Champion Zhang Shenjia "played around" the Rubik's Cube. A "third-order Rubik's Cube" with disturbed colors (that is, each side of the Rubik's Cube consists of 9 small squares, which are combined in the order of 3×3×3), can form as many as 432.5 billion combinations. At the recently concluded Nanjing Rubik's Cube Open in world cube association, Zhang Shenjia from An only used 1 1.86 seconds to restore each side of a chaotic "third-order Rubik's Cube". What is even more "stunned" is that the contestants on the scene not only tried to play the Rubik's Cube with both hands, but also tried to play it with one hand, blindfolded and even with their feet ... Nearly 100 magic friends from all over the country played an unexpected and wonderful game in the small Rubik's Cube world! Why so fast: There are "formulas" for playing Rubik's Cube. In the eyes of ordinary people, it seems a bit difficult to restore a disturbed Rubik's cube. Indeed, at the beginning of the Rubik's Cube, few people were able to recover quickly, and some financial companies in Europe and America even used the recovery of Rubik's Cube as a reference standard for recruitment. However, senior "magic friend" Song told reporters that under the research of many experts, people have now found a formula to restore the Rubik's cube. At present, there are three commonly used reduction methods: layered method, angle method and edge method. Each method is realized by the combination of different formulas. At present, Rubik's Cube lovers all over the world have summed up more than 150 formulas. He gave the reporter a simple formula in the layered method: right-up-front-up+front+right+. Quge said that this formula is incomprehensible to most people because every word in the formula has a specific meaning. For example, "Right-"means to rotate the right hand part of the Rubik's Cube counterclockwise, and "Up+"means to rotate the top layer of the Rubik's Cube clockwise. As for how many degrees to rotate, there is also a description in the formula. Although the Rubik's Cube has astronomical color combinations, with the help of the reduction formula, the magic friends can still recover regularly. Qu Ge said that after the magic friends get the Rubik's Cube, they generally don't start to recover immediately, but they should "look" at the Rubik's Cube carefully, mainly to find out which reduction formulas are most suitable for use from the messy color arrangement. "Of course, many friends often feel confused when they first look at the Rubik's Cube reduction formula. Now there are video decomposition of these reduction formulas. Rubik's cube lovers just need to hold the Rubik's cube in their hands and practice it. " Top master: There are more players who want to spell the "muscle memory" Rubik's cube, and the competition between them is inevitable. From 198 1, Rubik's cube lovers began to hold worldwide Rubik's cube competitions, thus creating their own world records. This record is constantly being refreshed, and the performance gap of many magic friends is often less than one second. The youngest player in this competition is Wang Zimo from Nanjing. Only 6-year-old Wang Zimo restored the Rubik's Cube in 40.96 seconds in this competition. This achievement surprised the reporter, but Wang Wei, the father of Wang Zimo, was not satisfied. He told reporters that it is not that the children's formulas are unfamiliar, but that the muscles of the fingers have not "remembered" these formulas. It turns out that the real Rubik's Cube master will not recite the formula when restoring the Rubik's Cube. After they get the Rubik's cube and determine the reduction method, their fingers will immediately turn the Rubik's cube by instinct, and the reduction formula will automatically "flow" on their fingers without thinking about it. This skillful state is called "muscle memory" by the magic friends. Zhang Shenjia, the first place in this open competition, almost restored the six sides of the Rubik's Cube in a blink of an eye and became the first person in China. He won't let his hands "idle" in the rest of the game, take out the Rubik's cube he carries with him and play with it to keep his hand feeling. Wherever there is a Rubik's Cube competition in the country, he will try to participate in every competition and seize every opportunity to learn from the "magic friends". Jiugongge: "Yinggu" once played the Rubik's Cube and mentioned it. Everyone thinks that a cube is made up of small squares of different colors. In fact, the Rubik's Cube can be divided into two types: plane and three-dimensional. Plane Rubik's Cube is to divide a square into many squares and fill in numbers or letters in a specific arrangement to make it look unusual and magical. Its history can be traced back to the first century BC. The "Jiugongge" played by Huang Rong and Yinggu in The Legend of the Condor Heroes is a kind of arithmetic Rubik's Cube which is mainly arranged by numbers. People even think that the Arithmetic Rubik's Cube originated in China. The familiar 3D Rubik's Cube was actually invented by the Hungarian engineer Erno rubik in 1974. Rubik, who teaches architecture and sculpture, invented the Rubik's Cube mainly to help students enhance their spatial thinking ability. At that time, in order to restore the disturbed Rubik's cube, he had been groping for nearly a month! Rubik's cube upgrade: the new Rubik's cube is more difficult to play songs, and opened a Rubik's cube franchise store in Nanjing. In his shop, the reporter saw many special-shaped Rubik's Cube, such as pyramid-shaped Rubik's Cube and UFO-shaped Rubik's Cube. Quge said that with the deepening of people's research on the Rubik's Cube, new varieties of Rubik's Cube were constantly discovered. These new Rubik's Cube have different ways of playing, but they are much more difficult than ordinary Rubik's Cube. It is understood that not long ago, Mao Peng, an 82-year-old man from Beijing, combined the arithmetic Rubik's Cube with the three-dimensional Rubik's Cube and invented the Chinese Dream Rubik's Cube. This Rubik's Cube adopts the principle of China's ancient Rubik's Cube. In terms of gameplay, in addition to achieving the same color of many faces, the sum of the numbers of each grid on each plane, regardless of horizontal line, vertical line and diagonal line, should be 15. Constantly challenging human wisdom, this is probably the charm of the Rubik's cube.