Rubik's Cube was once hailed as one of the three intellectual toys in the world, but now I dare not say so. What? What are the other two? You can remember: It's our 9-chain Chinese company and Cao!
You can split the cube. Nonsense! But ...... Have you ever split it? If not, immediately remove the cube together. Hey, is there a feeling of hitting the doom monster? Is it removed? We can see that in addition to the six Central blocks of different colors on the skeleton, there are 8 blocks and 12 blocks on the edges.
There is only one color for the central building blocks. There are two colors for the building blocks on the edges and three colors for the building blocks on the corners. In any case, no two blocks are identical. The central building blocks on the skeleton cannot be moved, so the relative positions of the central building blocks and the central building blocks remain unchanged. Therefore, the correct positions of the building blocks on the edges remain unchanged. For example, a red, yellow, and blue corner block is correctly located at the corner corresponding to the red, yellow, and blue center blocks. Our task is to turn the square blocks and corner blocks to their own positions.
Let's take a look at my plan:
From now on, we are about to start playing the cube. The task is to complete the cube.
First, select the surface color you want to play. Here I select blue color for teaching. Because I like blue ^ _ ^, we call the surface of the central building block of the color as the base surface.
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| Figure 2 |
Figure 3 |
Figure 4 |
In order to prevent players from turning around and not finding the direction of the cube, we define that the cube is placed in 2, and in figure 3, when we want to transfer the blue block outside to the Black Block location on the base, but it cannot affect the shadow blocks. Other uncolored building blocks are irrelevant, focus on the Operation block outside the base, the target position of the Operation block, and the unimpacted building block. (Note: In the operation step, the shadow block can be moved, but you must ensure that the shadow block does not change after the step is completed)
For the completion of the Rubik's Cube, we can do it one by one, and we can eat it one by one! During the conversion, you must find the actual target of the Operation block. Pay attention to the additional color of the Operation block; otherwise, the operation fails. 4. The yellow blue block and the green blue block are reversed, so it is useless to successfully use the blue block.
The following are some of the most basic steps to transfer an operation block to the base!
Brief description: The Shadow block in the figure is the target position. Note that I have not marked any blocks that cannot be affected. In addition, pay attention to the difference between the operation block and the target location, and use different methods for different locations. As shown in figure 6, all the blocks marked by the base plane can be rotated to reach location a or location B, and then the task of arriving at the destination location is completed in 1 way.
When the target block is on the back, you can use the three steps shown in Figure 7 to move the target block to the side, and then to the position. You can use the method 1 to complete the task of reaching the target position. By analogy, as shown in Area 8, all the blocks marked by the base area blue color can be rotated to reach the position, and then the task of reaching the target position can be completed in two ways.
When the target block is in contact with the base plane, you can use the three steps shown in Figure 9 to transfer the target block to the side, then to the position, and use the 1 method to complete the task of reaching the target position.
Now that you have finished playing the corner block, let's talk about how to play the corner block. (Figure 10)
Bypass: as shown in Figure 11, all the blocks marked by the base surface blue color can be rotated to reach the position, and then the task of reaching the target position can be completed in 4 ways.
Bypass: as shown in Figure 13, all the blocks marked by the base surface blue color can be rotated to reach the position, and then the task of reaching the target position is completed in 5 ways.
By analogy: as shown in Figure 15, all the blocks marked by the base surface blue color can be rotated to reach the position, and then 6 methods are used to complete the task of reaching the target position.
When the target block is in contact with the base plane, you can use these three steps to transfer the target block to the side, then to the position, and use five methods to complete the task of reaching the target position.
So far, all the tips on the cube side have been completed. Next we will build bricks for the house!
As shown in figure 17 (the gray color is the white color block), we have completed the basic surface (blue color) work, now we no longer care about the base surface, we put the base surface at the bottom. The first task we need to do is to turn the center blocks of the four sides to the corresponding position so that each side has four inverted 'T' shapes of the same color, as shown in the red box. The task we need to complete is to fill in the correct corner blocks on both sides of the inverted 'T' shape, as shown in the top right shadow section.
I don't need to talk about it anymore, right? Will you understand? You can use this eight-step method to convert the arn block to the Shadow position. When switching, be sure to pay attention to the direction of the cube!
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| Figure 19 |
Figure 20 |
Figure 21 |
Bypass: as shown in Figure 19, the circle-marked Edge building blocks can be rotated to reach the position, and then the task of reaching the target position can be completed using the 1 method.
Special case: as shown on the left of 20, the red-green edge block is already in the correct position, but the color is reversed. How is this good? (The method must be yes. On the 20-Right side, you can transfer an integral building block (circled in the figure) to this position. The red and green building blocks will naturally run out, right? :)
Okay, we built a brick for the Rubik's Cube building (Figure 21). It looks like we have finished 2/3, with only the upper-layer buildings left, all the nine blocks in the upper-layer architecture are building blocks with top colors (pink). Ah, don't underestimate the nine blocks in this area. The road is still long!
Now, let's go to the church, draw a cross in the chest and pray: Let me learn how to play cube!
The task we want to accomplish today is to draw a cross on the top of the cube, as shown in 23.
Now I want to explain it carefully. You have to listen!
As shown in Figure 22, there is method 1, which involves six steps. What exactly does it do?
22 there are five cubes below, indicating the formation of the Cross: when there is only one pink block on the top, method 1 can be used to form a "one" word. On this basis, method 1 is used, form an "L", turn the top surface to 180 degrees, and then use method 1 to form a cross.
Method 1 does not affect the completed bottom layer and middle layer when the process is completed. Is it interesting? In the future, the methods will become more and more demanding, and the blocks will become less and more complex.
Now, the cross is ready (figure 23), and we will be more confident to complete the cube building in the future!
Hello! Class! Sleepy!
The task we want to accomplish today is to let the four blocks of the Upper-layer architecture "be different" and let them go to their correct positions.
First, as shown in Figure 24, the four corner blocks on the top are called blocks, blocks, left corner blocks, and right corner blocks. Then let's look at the 25 (gray instead of white). The following two methods can be used to achieve the following: the position of the blocks remains unchanged, the left and right sides of the building blocks and the hidden blocks are exchanged clockwise (or counterclockwise). The bottom and middle layers are kept unchanged, and the top surface is kept cross.
I am still clear about it, right?★そ ∏ ⒋ (◇ ■ & →
Of course, not everything is smooth. 26 is a diagonal exchange. You can use the "dead" method below. When you are "familiar", you will naturally have a "coincidence", and you will find this problem very simple.
Now we have moved the four "Eaves" of the superstructure to where they should be. Now we have to flip all the top color blocks of the "Eaves", as shown in 27.
The two methods shown in Figure 28 can be used to keep the top color unchanged and rotate the left, right, and right blocks to achieve the goal of completing the top color.
Haha, but the world is not so "off" (cheap), as shown in Figure 29 there are several special situations that need special processing:
I saw these five "Building Block crabs" on the 29th. Are you upset? You should not carry this process back. You should remember: place the top color block that is not on the top of the corner block to the top block, and then use method 1 or method 2, things will turn around. (I can't really describe it. I just can't say anything, so I can understand it :)
Today I'm going to talk about the last lesson, 5555555555. The teacher is about to leave after the lecture. Are you not sad?
What we need to do is to move the four blocks of the cube's superstructure to the correct position. Hi! Look at my "solitary six swords" with a magnificent and endless final blow! (Figure 30)
(Method 1 is clockwise, and method 2 is clockwise)
Haha, don't faint. The last trick is of course very powerful. Do you think it's not like the kill "Dragon and tiger dance" in "The King of boxing "? To put it bluntly: method 1 of "turning to four edges" is actually the method 2 of "flattening the quartet" and "flattening the quartet, method 2 of "turning to four edges" is actually the method 2 of "flattening the quartet" + method 1 of "flattening the quartet. Of course, there is also the situation shown in Figure 31 below. I believe this problem can be solved.
So far, all the Rubik's Cube buildings have been completed. Please enjoy the success! Pai_^