Where is the Rubik's Cube popular?

The climax that has not yet been popular Since 1974, the Rubik's Cube applied for the patent of the third-order Rubik's Cube, the Rubik's Cube quickly swept the world, making Lao Lu's family the only one. Since then, all kinds of strange Rubik's Cube have mushroomed. As a result, there have been many Rubik's cube collectors. In order to facilitate the collection and classification of various Rubik's cubes, foreign collectors have two ways to classify Rubik's cubes: one is by shape, the other is by structure; the other is by shape, and the main categories can be divided into 10: 1. Regular tetrahedron: regular tetrahedron (pyramid) Rubik's cube concourse 2, regular hexahedron 3, regular octahedron: octahedron Rubik's cube concourse 4, regular dodecahedron 5, rhombic dodecahedron 6, dodecahedron 7, icosahedron 8, spherical surface 9, column 10, star 2, cube pressing. It can be divided into six categories: 1. Bipolar Rubik's Cube, 4-axis Rubik's Cube, 4-axis Rubik's Cube, 5-axis Rubik's Cube, 6-axis Rubik's Cube, Multi-axis Rubik's Cube, Mixed-axis Rubik's Cube. Each Rubik's Cube revolves around a central point, and the so-called axis is perpendicular to the central point. All the axes intersect at a point called the core, which is the core block of the Rubik's Cube. I think it is more scientific to classify by structure, because their structures are all similar and their solutions are the same. Third, according to the rotation process, the shapes of some Rubik's cubes will change constantly, which can be divided into two categories: 1. Traditional category: refers to the appearance and shape of Rubik's cubes remain unchanged during the rotation process, such as the common second-order, third-order and fourth-order hexahedral Rubik's cubes. 2. Deformation: The shape of the Rubik's Cube will change constantly during the rotation, such as the common SQ 1 Rubik's Cube, the second-order pyramid Rubik's Cube, and the second-order cartoon Rubik's Cube. There are many kinds of Rubik's cubes, and the characteristics of a Rubik's cube can't be fully expressed by "axis number+shape", so I added the concept of "order" when classifying Rubik's cubes. It is precisely because some squares on the Rubik's cube are composed of multiple rotating layers that the Rubik's cube can produce complex changes, which is also the charm of the Rubik's cube. The higher the number of steps, the more difficult the Rubik's cube is. 1. First order: A Rubik's cube with only one cube at the intersection of two rotating layers is called a "first order Rubik's cube". For example, most of the eight-axis Rubik's Cube are first-order, such as Magic Flower, X Rubik's Cube and Platypus Rubik's Cube. , so the restore is relatively simple. 2. Second-order: A Rubik's cube has only two Rubik's cube blocks at the intersection of two rotating layers, which is called a "second-order Rubik's cube", such as a second-order spherical Rubik's cube with 12 axis, in which the blocks connected with the axis are invisible and hidden. 3. Third-order: A Rubik's cube has only three Rubik's cube blocks at the intersection of two rotating layers, which is called the "third-order Rubik's cube", the most common ones, such as the third-order Rubik's cube and the pentagon. If the Rubik's cube is disassembled, it can be seen that it has a four-axis structure: the two rotating layers of the Rubik's cube intersect with three squares, so it is called a "four-axis, three-order octahedral Rubik's cube"; 4. High order: two rotating layers intersect with more than three Rubik's cube blocks, which are collectively called "high order". At present, the highest-level six-axis Rubik's cube is seven-order, and the highest-level twelve-axis Rubik's cube is five-order. High-order Rubik's Cube is the development object of the new Rubik's Cube in the future. 5. Some Rubik's cubes have different numbers of crossing blocks between two rotating layers. For example, the order of this four-layer pyramid cube is determined as follows: the interior of this pyramid cube is actually a four-axis octahedron. Compared with the four-axis octahedron, there are three kinds of added squares: the topmost square, the middle square and the square where layer A and layer B intersect. Because the added squares are first-order, this Rubik's Cube should be called "Four-axis 3. 500. 000000000505". See /viewthread.php? tid= 1554