The solution of the Rubik's Cube is very complicated, so it is impossible to explain it clearly here, and it is meaningless to say a specific solution to the solution process. So I want to give you a hint. In the Rubik's Cube, it is not based on human faces. In other words, it seems that a face can't be put together, and one side is red, even if it is successful. But in units of blocks, each block has its specific position and direction. As long as one orientation is wrong, this block is wrong. And as long as it is put right, even if the surface looks irregular, it is half the battle. Let's give an example. First, you have to set the center of the Rubik's cube. For example, you set the top surface to big red, the surface facing you to yellow, and the left surface to white. Then, the center block above should be red, the center block opposite you is yellow, and the center block on the left is white. After positioning, you can start. Start with the top two contact blocks, such as the middle block of the layer where the red surface and the yellow surface are in contact, the top should be red and the bottom should be yellow, then place the top three contact blocks, such as the red, yellow and white blocks, and try to put them in the right position, then place the middle two blocks, and finally place the bottom two blocks and the bottom three blocks. Note that sometimes the set blocks will be temporarily disrupted because the following blocks will be placed, which is for sure. I didn't make it clear. I'm sorry, you can read it carefully several times, and you can definitely solve the Rubik's cube! Solution: All 20 rotatable squares on the Rubik's Cube can be formed into more than 43,000,000,000,000,000 (43 million megabytes) in different combinations. This is probably the most obvious difficulty in solving the puzzle. The advantage of this solution is that it tries to make you only need to consider no more than 30 combinations of blocks involved in this step at any time in the five steps. The front 12 of these 20 rotatable squares are located one by one, so in many cases, you only need to consider the position of one square. In other words, as long as only so few combinations of squares are considered at a time, it is entirely possible to write them down and provide a suitable rotation method for each situation. Therefore, no matter what combination you start with, no matter how messy the Rubik's Cube is, this scheme can guarantee success. (Note: If you have disassembled the Rubik's Cube, please make sure that it is not misplaced during assembly. ) Marks and Terminology The standard names of the six planes of the Rubik's Cube used in the whole process of solving the Rubik's Cube are as follows: top: top (choose your favorite color) front: front plane left: left plane right: under the right plane: behind the bottom plane: back plane-and the color of the less used plane depends on the color of its central square (which cannot be rotated). You can choose the color of the top surface and keep it the same throughout the opening process. Note that the colors of the right, left, back and front planes can be different, depending on how you hold the Rubik's cube. So the front plane can be one of any four colors (by turning the Rubik's cube in your hand). After the front plane is determined, the color of the right, back, left plane and the color of the bottom plane remain unchanged (after choosing your favorite color). In any group of rotations, the colors of the right, left, back and front planes remain the same, but they often change when the next group of rotations is carried out. Right+: Rotate the right plane 90 degrees clockwise. Right-:Rotate the right plane counterclockwise by 90 degrees. Right 2: Rotate the right plane by 180 degrees (the clockwise and counterclockwise effects are the same at this time). Front+: Rotate the front plane 90 degrees clockwise. Front-:Rotate the front plane 90 degrees counterclockwise. Front 2: Rotate the front plane by 180 degrees. Left+: Rotate the left plane 90 degrees clockwise. Left-:Rotate the left plane counterclockwise by 90 degrees. Left 2: Rotate the left plane by 180 degrees. Bottom+: Rotate the bottom plane 90 degrees clockwise. Bottom-:Rotate the bottom plane 90 degrees counterclockwise. Bottom 2: Rotate the bottom plane by 180 degrees. Top+: Rotate the top plane 90 degrees clockwise. Top-:Rotate the top plane 90 degrees clockwise. Top 2: Rotate the top plane by 180 degrees. This scheme does not need to be turned over. Clockwise and counterclockwise, each face is regarded as a clock face. The right front is an edge square, which is located at the edge position between the front plane and the right plane in a specific time. The front right top is a corner box, which is in the angular position between the front plane, the right plane and the top plane at a specific time. Therefore, 12 square is: front bottom, left bottom, back bottom, right bottom, left front, right front, front top, left back, left top, right back, back top and right top. The eight corners are: left lower front, right lower front, left lower rear, right lower rear, left front top, right front top, left rear top and right rear top. Any rotation and the blocks involved are represented by the above terms. To use the solution method in this paper, we must hold the Rubik's cube in a certain direction so that the square to be moved is consistent with the one described in this paper. If you don't understand, please look at the muscles. When the color of a square is consistent with the color of its side or corner, we call it correct positioning or placement. When the colors of all sides of a square are consistent with the colors of the central square of its adjacent plane, we call it the right direction. For example, an angular square painted with red, blue and green colors is in the correct position when it is located in the corner position adjacent to the red, blue and green central square, but only when its red, blue and green edges are consistent with the red, blue and green central square can it be considered that the square is in the correct position (the direction and position are correct). The five steps in the solution are summarized as follows: 1. Choose one of the six colors, and then use this color to locate and orient the four edge squares (i.e. the top edges) on the plane of the central square. 2. Locate and orient the four corner boxes on the selected top plane (i.e. the top corner). 3. Locate and orient the four edge squares of the layer below the top plane (i.e. the middle edge). Locate and orient all the 1 2 blocks in steps1to 3 one by one, so far, two-thirds of the blocks have been completed. 4. Locate and orient the four corner boxes on the bottom plane (i.e. the bottom corner). 5. Locate and orient the four edge squares on the bottom plane (i.e. the bottom edge). Each big step is generally divided into two small steps. -1 Locate these squares one by one. -2 Determine the direction of these squares one by one. This requires moving these squares away from the correct position for a period of time, and then returning to the original position in the right direction. -1-2. A complete and clear solution will be introduced below. After reading the following introduction, you may ruin the fun of solving the Rubik's Cube with the above inspiration. In addition, the first two steps only introduce the method of completing a plane. This is a fairly easy task, and you may be willing to do it yourself (or you have already finished it). The first key step is step 3. Step 1: Step 2: Step 3: Step 4: Step 5: Step 1: Step 1 The color of the top edge (front top, left top, back top and right top) should be selected before unpacking. Don't forget that the color of any plane is determined by the color of its central square. Hold the Rubik's cube correctly, so that the plane you choose is facing up, that is, the top surface, and keep the plane unchanged during all the solutions. The purpose of this step is to locate and orient the squares belonging to the four edge positions of the top plane. The four top squares are placed and oriented one after another. You should do the following five steps for each square (1A- 1e). If you are lucky, maybe one or two squares happen to be in its correct position, then you only need to do these five steps (1A- 1e) two or three times. If you are still confused about this, please check the contents of the standards and terms. 1A: Hold the Rubik's Cube correctly so that there are no placed and oriented squares at the top of the front. You may have to turn the whole cube in your hand to do this, which will also change the color of the front plane. 1B: Find the square that should belong to this top. This square that requires a solution is called an on-demand square. 1C: If this box is already on the top, but the direction is wrong, please refer to1e. 1D: there are 1 1 possibilities for the position of this required square, so there are 1 1 groups of corresponding rotations here. Make one of the following 1 1 group rotations according to the position of the required square. For example, if the current position of a square is the right top, it can be treated according to the rotation from the right top to the front top. Right top to front top rotation method: right-front-back top to front top rotation method: top+right-top-front-left top to front top rotation method: left+front+front right to front top rotation method: front-back right to front top rotation method: right 2 front-right 2 left back to front top rotation method: left 2 front+left 2 front left to front top rotation method. Bottom 2 front 2 bottom left to front top rotation method: bottom+front 2 1E: If the current position of the front top frame is correct, but the direction is wrong, please do the following set of directional rotation: Front top directional rotation method: front-top+left-top—— (These four top frames are oriented one by one, so it may need to be repeated four times. After this step, a cross pattern will appear on the top plane (if you choose green as the top color, a green cross will appear). Step 2 Step 2 Vertex (left front corner, right front corner, left rear corner, right rear corner) The purpose of this step is to locate and orient the four squares whose tops should belong to the angular position while keeping the placed top square unchanged. In this series of rotations, the top edge box will be temporarily moved, but it will be correctly restored. The following six steps (2A-2F) are required for each of the four squares belonging to the angular position of the top surface. Similarly, if you are lucky enough to bump into a box with a top corner, it is already in the right position, then you don't have to do it four times. 2A: Find a top corner box that is not correctly positioned and oriented (that is, any box that should belong to the top corner position). This is an on-demand box. If this demand box is currently in the correct position but in the wrong direction, please refer to 2E. 2B: If the requested box is now on the top surface, please make the following set of rotations. Please hold the Rubik's cube in a certain direction, so that the demander is in the right upper position. Right Front Top Down Front Left Rotation Method: Left-Down-Right+This rotation moves the required box to the bottom surface. 2C: Rotate the bottom plane so that the on-demand square currently on the bottom plane is just below the corner of the top surface it should occupy (this part is called the on-demand part). Hold the Rubik's cube in a certain direction, so that the required position is the right upper position. At this time, the required position is the right front top position, and the required square should be in the correct position of the bottom surface. 2D: To correctly place the required corner box, please do the following rotation. Rotation method from front right of bottom to front right top: right-bottom-right +2E: If the front top frame is in the wrong direction, do one of the following two rotations (note: only do one of them). Rotation method in front, lower right, right+,front+lower 2 front-front, upper right: front+lower 2 front-,lower right 2 right +2F: If the direction of the front, upper right frame is still incorrect, repeat the rotation you made in 2E. This will make the direction and position of the right front top box all correct. You may need to repeat these six steps (2A-2F) four times to complete the positioning and orientation of these four corner boxes. After doing this, one-third of the entire Rubik's Cube, that is, all the squares on the top surface, will be in the right direction. Step 3 Step 3 Intermediate edges (left front, right front, left rear and right rear) The purpose of this step is to locate and orient the four edge squares below the top plane. This step can be seen as a solution to the "middle plane". Once this step is completed, two-thirds of the Rubik's Cube will be completed. For each square that should belong to the middle edge position, the following four steps (3A-3D) should be completed. You may find that the middle edge box is in the correct position again. 3A: Find a middle-level edge box whose direction has not been determined (that is, the box that should belong to the middle-level edge position). This is an on-demand box. If the location of this demand box is correct, but the direction is wrong, please refer to 3D. 3B: If the required box is not on the bottom plane, please make the following set of rotations. Hold the Rubik's cube correctly in a certain direction, so that the required Rubik's cube is in the front and right positions. Rotation method from front right to bottom surface (bottom back): right-down+right+down+front+down-front -3C: At this time, the required square has reached the bottom surface. Rotate the bottom plane so that the color of the vertical plane of the required square is consistent with the color of the central square of one of the four sides (front, back, left and right). Then hold the Rubik's cube correctly and make it necessary. Do a set of rotations from the bottom right to the right front. If the required square is located in the front plane, a set of rotations will be made from the front of the bottom to the front right. Rotation method from bottom right to front right: (bottom+front+bottom-) front-(bottom-right-bottom+) right+bottom front to front right: (bottom-right-bottom+)+(bottom+front+) Do the following set of directional rotation. Front right directional rotation method (*** 15 step): (right-down+right+) (down+front+down-) front-(down+right-down+) right+(down+front+down-) front-right-wrong method: this set of rotation is better than the previous two sets. Only one top corner frame (i.e., the top right corner frame) has moved from its correct position to a position more than once. If you make a mistake or get confused in one of these groups, stop immediately and try to restore the top plane. Usually, you must rotate the front plane or the right plane to restore the box to the top plane, and then redo several sets of rotations in step 2 to restore the wrong top corner box. After this, try again from 3A. Step 4 The corners at the bottom of Step 4 (lower left front, right front, lower right rear) are used to locate and orient four corner squares on the first plane. This is done by positioning first and then orienting. This time, the four squares are not placed separately, but completed as a group at the same time. According to the following description about 4A-4F, one step can be completed at a time. 4A: First, it is necessary to rotate the bottom surface to make as many corner squares as possible in proper positions, regardless of its direction for the time being (the side squares on the bottom surface need not be considered for the time being). As long as the bottom surface is rotated, at least two and sometimes even all four corners on the bottom surface can be in the correct position. If there are two squares left in the wrong position, then their positions are nothing more than two adjacent or two diagonal corners. For the former, for the latter, you can do 4C rotation. 4B: If two wrong positions are adjacent, the following set of rotations can make them switch positions. Rotation method of front left and front right at the bottom (be careful to hold the Rubik's cube correctly so that the two squares to be adjusted are in these two positions): (right-down-right+) (front+down+front-) (right -th+ right+) Down 2 4C: If two corner blocks with incorrect positions are opposite, the next set of rotations can adjust the position. Adjust the rotation method for the left front of the bottom and the right rear of the bottom (be careful to hold the Rubik's cube correctly so that the two squares to be adjusted are in these two positions): (right-down-right+) (front+down 2 front-) (right-down+right+) down +4D: At this point, the four bottom corner squares have been placed properly. At this time, if these four squares are properly placed, then rotate them as follows. -There is only one rotating step in this step, but it should be used repeatedly. As long as a correct grip method is determined before each rotation. -grip method (this is the key): put the layer to be adjusted at the top position (this is the whole process). . Take the color of the center of the top surface as the standard color. Observe whether there are standard color blocks at the four corners of the top surface:-There is only one standard color: put this color block in the front left position at the top. At the same time, there are two standard color blocks:-a: two adjacent blocks: two blocks are placed in the right front position and the right back position of the coat respectively. -B: Two blocks are opposite: it will look at eight blocks on four corners), find the edge where two standard blocks appear at the same time, and set this edge as the left side. Hold the Rubik's Cube well and you can start to rotate: (right+up+right-) up+(right+up 2 right-) (it's as simple as that, only this group of rotations). If the four squares are in the wrong direction after a set of rotation (this rotation will not change them), we don't need to pay attention to this for the time being), then redefine the grip and continue to rotate repeatedly until the relative directions of the four corners are correct (usually repeated 3-5 times). Adjust the top layer so that the color of its corner box is the same as that of the completed two layers, and remember to reposition this layer as the bottom surface. Step 5: Step 5: Look at the position of the top edge (front bottom, left bottom, back bottom and right bottom):-If only one edge frame is in the right direction, do it according to the rotation method of 5B. -There are two correct borders in the right direction: do it according to the 5C rotation method. 5A: Perform the following set of rotations, this time only keeping the top and bottom surfaces unchanged. (left-right+front+) (left+right-down 2) (left-right+front+) (left+right-) After the rotation, look at the bottom surface before deciding the next rotation mode. 5B: Hold the Rubik's Cube correctly, so that the edge with the correct position or direction is in the position in front of the bottom. Then do 5A group rotation. After the rotation, look at the bottom surface before deciding the next rotation mode. 5C: Hold the Rubik's Cube so that: a- The relative position of the right square: Make the right square at the front and back of the bottom. The square on the right is adjacent: make a square on the right in front of the bottom. Transformation method (not shown): (left-right+front+) (left+right-down-) (left-right+front-) (left+right-down-) (left-right+front 2) (left+right-)

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Defendant: Paiyun.