If you change uppercase letters to lowercase letters, it means that you have to hold two layers of rotation. For example, L (left double), the rotation method is the same as L (left), but it has to be rotated in two layers. Another example is the D' (Summer Double) and D' (Summer Double) rotation methods, which also support two-layer rotation. L2 (yesterday's double 2) is similar to L2 (yesterday's double 2).
The third-order Rubik's Cube has 26 magic blocks, except for 6 central blocks with only one color, as well as 12 edge blocks (with 2 colors) and 8 corner blocks (with 3 colors). We need to give each edge and corner a unique code, which is easy to distinguish. For example, the yellow side of the "yellow-blue" block is [1], and the blue of the corresponding other side is [1']. A corner block has three corners.
First, determine the code.
Now give each side a code, using 1~9 and ABCD respectively. For example, the yellow codes on one side of yellow-blue, yellow-orange and yellow-green triangles are 1, 2 and 3, respectively, and the other side is 1', 2' and 3' (see Figure 2), which are 1 ~ 9 and1respectively. The blue and white squares are a and b, and the green and white squares are c and d.
[yellow blue 1, 1' yellow orange 2,2' yellow green 3,3' orange blue 4,4' orange white 5,5' orange green 6,6' red blue 7,7' red and white 8,8' red and green 9,9'] [blue and white a, b, 9
Pronunciation is [1y ι yi yi yi yi; 1' Y yiyiyiyiyiyi yiyiyi yiyiyi yiyiyi yiyiyi yiyiyi yiyiyi yiyiyi yiyiyi yiyiyi yiyiyi yiyiyi; 2 èr II; 2' r children; 3 Sān-shān three mountains delete Shanshan; 3' s an-Shan vermicelli is very supportive; The trial of 4 Si √-Shi Temple is: 4' stone picks up food and knows the time; 5 wǔ incarnation Wu Wu Wu Wu Wu Wu; Don't misunderstand fog; 6 Li Liu; 6' Liú Liu Liu tumor sulfur; 7 qī and seven wives domineering paint; 7'qí flag plays odd chess; 8 Baba Baba Baba Baba; 8'bá, that's a good idea; 9 jiǔ incarnation 99999; 9' Yu Ji saved my uncle's old vulture; A: I'm in trouble; B: b √ Avoid closing positions; C:xρ Xixi rhinoceros; Didi Didi Didi.
Look carefully for the edges 1, 3 and 4, 6 and 7, 9, and read the local sound, which can be expressed by a Chinese character. At the same time, look for the other side of them, read the tone sandhi and express it with a Chinese character. Pronunciation should be read correctly to prevent mistakes when twisting. "Yi" is her, "Yi" is her.
Stay, "good" means unauthorized (action), and "support" means support. Go is go, sulfur is sulfur, and there are scars, plantains, bars and postscript mountains. Hong means grassroot (grasshopper), Gui means ghost (such as Hiderigami), as well as vultures, coffins, obstruction (obstruction), rhinoceros, concealment and so on.
Each corner block has three corners, and we must determine a unique code for each corner. [Yellow, blue and orange 1,1'8'; Yellow, green and orange 2,2' 8; Yellow-green red 3,3' a; Blue, white and orange 4,4' 9'; Green, white and orange 5,5' 9; Green, white and red 6,6' b; Blue, white and red 7,7' c].
The corner codes 1, 2 and 3 are above the Rubik's cube, and other corresponding corner codes 1', 2' and 3' are in front of and behind the Rubik's cube respectively. Look carefully. Corner faces 4, 7, 5 and 6 are in front and back respectively, and the corresponding faces 4'~ 7' are all at the bottom of the Rubik's cube; 8 and 9 are on the left and ABC is on the right. Please read them carefully in order. The pronunciation and representative characters of the corner face are the same as those of the edge face. It is the most basic work in blind spinning to memorize the codes of each prism and corner.
Second, the blind twist formula
In this method, 12 edge blocks are restored first, and then 8 corner blocks are restored. The starting point of the Rubik's Cube is the yellow-red Rubik's Cube and the starting point of the Angle Rubik's Cube is the Huang Honglan's Rubik's Cube, so the faces of these two Rubiks' Cube are not coded, and their yellow faces are all designated as Q. The blind twist formulas used are divided into "side-changing formula" and "angle-changing formula". There are three formulas for changing sides and only 1 formula for changing angles. You have to practice repeatedly with the uninterrupted Rubik's cube, pay attention to the technique, be coherent and fast!
● Formula for changing edges
Formula ①: (r ur' f') (r ur' u' r' f R2 u' r' u')
Formula ②: (r ur' u' r' f R2 u' r' u') (r ur' f')
Formula ③: (R' U2' R U) (R' U2' L U') (R U L')
● Angle change formula
Equation ④: (L U L U 2L' r') (L U R) U2L2
Observe formula ①, commonly known as: (Shun shallow) (convenient gas money is two heads and three heads). We call (R U R'U') Shun Shun, which is pronounced as (upper right oil shá ng); Its last place is changed to F', which is called cis-shallow, and (R U R'F') is pronounced as (upper right oil shallow); We also call it (R2 U'R'U') two heads and three heads, because the head turned twice and then reversed three times. Its function is to send the yellow-red prism to the yellow-blue prism (in fact, it is exchanged), but the angle Huang Honglan and yellow-green red are also exchanged, which can be recorded as Q→ 1. Formula ② is almost the same as Formula ①. Just swap the contents in the brackets and compare them carefully. Commonly known as: (easy oil money has two heads and three heads) (shun shallow). Its function is to send the yellow-red edge block to the yellow-orange edge block, but the corner block Huang Honglan and yellow-green red are also interchangeable, which can be recorded as Q→2. Formula ③ has (R'U2': oil sháng 2) in the first two brackets, which is its characteristic. Its function is to send the yellow-red edge block to the yellow-green edge block, but the corner block Huang Honglan and yellow-green red are also interchangeable, which can be recorded as Q→3. Note: Q→ 1 means to send facet q to facet 1, and other expressions are similar. Practice repeatedly and observe the contrast!
For Formula ④, it is an angle change formula, and the content is: (left, left, 2, yesterday's oil) (left, right) up 2, left 2. Its function is to transfer the Huang Honglan of the corner block to the orange, white and green positions of the corner block (actually, it is exchanged), which can be recorded as Q→9, and the corner surface Q is sent to the corner surface 9, which is similar to edge surface transmission, but at the same time, the yellow-red edge block and the yellow-blue edge block are also exchanged.
Practice the above four formulas repeatedly, and pay attention to the ways and means of fingers and their mutual cooperation. For changing sides, if it is "Q→5'", it is necessary to go to [l2'] (this step is called bridging), then use formula ② to change sides, and then go to [l2'] (this step is called returning) to achieve the goal! This is equivalent to changing 5' to 2 first, and then changing sides with formula ②. When turning l2', the left thumb pinches the bottom, the other fingers pinches the top, and then the thumb turns to the top. Remember: when we change the edge, we both pinch the two layers into "bridge" and "back", while the angle change described later only rotates the single layer into "bridge" and "back". Another example is "Q→D". You have to go to [l2'] (this step is called bridging), then switch sides with formula ①, and then go to [l2'] (this step is called returning) to achieve the goal! Another example is "Q→8'", first turn [d'] and [l2'], which is a bridge, which is equivalent to turning 8' to 3, then changing sides with Formula ③, and then turning [l2'd] (return), and the goal is achieved! The turning method when returning is opposite to the turning method when bridging, from back to front, and vice versa!
For the angle change, if it is "Q→4", just go to D' (bridge), then go to formula ④, and finally go to d (return). This is equivalent to first turning the corner surface 4 to 9, then changing the corner with formula ④, and then returning to the original road. Use lowercase letters to indicate the conversion from corner change block to double layer, and use uppercase letters to indicate the conversion from corner change block to single layer. Pay special attention to this point and don't confuse it!
If the edge is changed to "Q→5", the code is 5; The code of "Q → 8"' is Q→8”', which is represented by numbers or letters. Similarly, if the angle "Q→4" is changed, the code is 4; The code of "Q→C" is C. Now make a list of every situation of changing edges and angles and practice them one by one. Think about how it came from, you can guess for yourself, don't memorize it!
Switch exercises: [1'l' formula 3l; 2'ld'l formula ② L' DL'; 3' l formula ① l'; 4 d'l formula ② l' d; 4' l' formula ② l; ; 5dl‘' formula ① LD'; 5' L2' formula ② L2'; 6 dl formula ② LD'; 6'l formula ② l'; 7 d'l' formula ② LD; 7'd2l formula ② l' d2; 8 d'l' formula ① LD; 8'd'l2 formula ③ L2d; 9 dl formula ② l' d'; 9' D2L' formula ② LD2; A l' formula ① l; B l2 formula ③ L2; C l formula ③ l'; D l2 formula ①l2].
The corresponding formulas are directly used for facets 1, 2, 3, without bridging and returning. Facet B is converted to l2' and then to Formula ③, then to l2' and then back, similar to 8'. Be careful not to confuse the transfer method [l' yesterday's double] with the code [1' shift], they look the same!
Let's put it into practice (there is a list of corner changing exercises at the back).
★ Disrupt a Rubik's Cube as follows: Lu Ru's F2BR2U DBDR. The code is as follows →
Edge change: [C62B]-[53'19']-[7' 4' 8' 7]
Angle change: [2'19' b]-[a97'1']
Analysis: After the Rubik's Cube is disrupted, first look at the starting point Q of the Rubik's Cube, which is green (white). Send it to C(D), touch it with your finger and write "C"; Here is orange (green) color. Send it to 6 places, touch it with your fingers and write down "6"; If this goes on, write 2, b, 5, 3', 1. When writing "9'", it is a red and yellow block, which should stay at the starting point. In the next yard, go to a block that hasn't arrived yet and write 7'. Then go down to 4', 8', 7, * * * and write 12 yards, which means you have to turn 12 times when changing sides. The underlined letters indicate that the yellow and red blocks have changed here. For example, the 7' here, after using the formula, the yellow and red blocks are sent here. Every four codes are written in a bracket, and three brackets are used to change sides. Only two brackets are used to change the angle. If you encounter a corner block in Huang Honglan, you should also send it to the corner block that hasn't arrived yet. This is similar to changing sides, and the underlined letters have the same meaning. We can restore each edge block one by one according to the list of edge changing exercises.
Now code the corner block. The starting point is the angle Q, which is green (yellow-orange). You should touch this corner with your finger and write down "2". But this corner is blue (yellow and red) and should stay at the starting point. In the next code, we just move it to an unachieved corner 1 and write down "1"; Next, I'll write 9', b, a, 9, 7', 1', * * * and change the corner eight times. On the way, a prism-like "small period" also appeared in the street corner of Huang Honglan, temporarily turning to "1".
Angle transformation exercise: [1LD' 4dl]; 1 ' L ' B④B ' L； 2b④B’； 2’L2④L2； 3 BL‘④LB’； 3 ' B ' D④D ' B； 4d’④D； 4‘L2’B④B’L2； 5 pounds 4 ④B' l '；; 5 ' L ' d '④DL； 6d④D’； 6 ' B '④B； 7d ' L④L ' D； 7 ' DB '④BD '； 8 L’④L； 8 ' L2④L2； 9④; 9'L④L'].
Don't memorize when turning the corner, we can guess for ourselves. Corner A should turn to B2 first, and then turn to B2 after using Formula ④. Angle b is rotated to B2L' and angle c is rotated to D2.
In the blind twist example above, the coding sequence of corner block blind twist is [2'19' b]-[a97'1']. You can also restore each corner block one by one according to the list of corner changing exercises to get a preliminary understanding of this blind twisting method.
Third, the example of screwing around.
We use several concrete examples to deepen our understanding of this blind screwing method. The focus is on the situation of "small circulation" when changing edges (or corners), that is, how to deal with the yellow edge and red edge (or Huang Honglan corner) in the middle. Pay special attention to the underlined coded numbers or letters in the following examples!
Example 1, Rubik's cube destroyed: RBLD F2R2D' B'D'LU'
Chamfering: [4' 3' a 9]-[16' 7' c]-[1'258-2 (1)]
Angle change: [C 1 3 6]-[9 4'8']
The starting point q of the prism is blue (orange). Click 4' with your finger and write down the first code 4'. This is green (yellow). Click 3' and write down the second code 3'. Then A, touch the yellow-red prism at 9: 00, and a "small cycle" appears, so the yellow-red prism is sent to 1. This 1 is underlined, so pay special attention to it. If you click this block again next time, it has become the yellow and red block at the starting point! Next is 6'7'C, then 1'. Here are the yellow and red blocks, and the second "small cycle" appears. Let's send it to two places that haven't been ordered yet The following codes are 5 8 2 in turn, and the coding is over. There are two "small loops", two codes are underlined, and * * * has 13 code. Please experience it carefully. It should be noted that the block code must be an even number. If it is singular, a code "1" should be added at the end (see red 1 in brackets above). If Formula ① is not turned once, the rear corner block will be twisted blindly.
Corner block coding is similar to edge block. The first code is C, but it encounters a Huang Honglan corner block (starting corner block) and has a small loop. We randomly send it to the corner with 1, which is underlined, followed by 3 6 9 4' 8' corner block code, and * * has 7 codes.
In fact, in the process of coding, it is also "writing poems", that is, converting the coding into corresponding representative words, with a clause every 4 yards, which is easy to remember! The poem in the example 1 is as follows: change the edge [stone fan loves wine, cures rhinoceros, moves two dancers and two doctors]; Change the angle [rhinoceros walks along the mountain, leek stone pulls out]. When the poem is finished, it is necessary to explain and connect it in the depths of the brain: [A stone fan actually loves to drink, and it treats tumors for that strange rhinoceros. Insist on dancing the banana in Erli and send it to the second hospital]; On the way, the rhinoceros was walking along the hillside, biting the leek and pulling it out of the gap. With a poem, you can explain it at will, and the more exaggerated it is, the easier it is to remember!
Example 2, Rubik's cube is broken: R2UL2B FRUL R2 U
Chamfering: [5' a 9' 8]-[7' 32' 8']-[C4' 61'-d (1)]
Angle change: [B 9 3 4]-[C 8 1']
Here, there is a small cycle from block code to 9' (when it meets yellow and red blocks), so it is also a small cycle to send it to 8, and then to 8', and then to send it to C, and the two codes are underlined. After coding the *** 13 code, the code "1" should be added at the end of each order. There is no small loop in corner block coding.
Poetry: Change the edge [Fog loves to save Pakistan, Cheshan is the postscript, Six aunts are sucked, "Lichen"]; From another angle [avoid drinking three or four, aunt eight] explanation: [I love to save banana seedlings in foggy days, plant them in Qipanshan and trudge up the mountain with my son, let the seedlings absorb the rain and dew, and aunt Liu will pick some "lichens"]; I told her that I had been sober for three or four days, and Aunt Ba was looking for me by the stream.
Example 3, Rubik's Cube Destruction: RU2LD L'UDR2 L'U'BR'
Chamfering: [A564']-[9'1D3']-[8' 27' 2]
Angle change: [8'2 3 9']-[B 7'5 3']
Block code cycle is small, *** 12 code, and formula ① does not need to be added once per pair. There is also a small cycle of corner block coding, which is selected to be sent to the 3-corner surface. Poetry: Change the fate [Love six stones in the arm, see a doctor and disperse your brother, pull out two and ride two]; Change the angle [pull out two or three uncles and cover the fan with an arm flag]. Explanation: [I love practicing martial arts and hit rocks six times. My younger brother got separated on the way to the hospital, so I pulled out the garter st from the second hospital and rode for two miles. In vain, I began to ask my uncle for help on the second floor. We all tied the flag-bearers to our arms to cover our fans. I hope my brother can find us.
Example 4, Rubik's Cube Broken: R2F2LR UDRL U2 D2
Chamfering: [5' 8' 21]-[6' d 9' 3]-[4' b 7'1]
Angle change: [C 6'8'4']-[9 2 A 2]
Block coding has a small cycle, and the *** 12 code is double; There is also a small cycle of corner block coding, which is selected to be sent to 2 corners. At the same time, write a small poem every four yards and convert it into corresponding representative words at will. When explaining in your mind, pay attention to linking the poems behind with the poems in front to facilitate your memory. Anyway, the power of interpretation is in your hand, and you can explain it any way you want.
Poetry: Changing the edge [Dr. Wu Ba, "Liu Di" old shirt, Shibi flag dress]; Change the angle [a stream pulls stones, wine loves two people]. Commentary: [In the fog, I pulled out the bamboo pole on the wall of the Second Hospital, which was Liu Di's old shirt, and only some flags and clothes were left on the stone wall]; Change the corner [I jumped over the stream near the yard, pulled out the stalagmites and ran. This is a drunken incident in the Second Hospital. Actually, I love the Second Hospital.
Practice the coding of the above example repeatedly, focusing on the handling of small loops. At first, you can use a pen to help code, and finally you can directly observe the coding!
In order not to miss or repeat the coding, the principle of "four on the left and three on the right" can be adopted, and the blocks where prism faces 1, 4, 5 and 6 are located belong to the left; The blocks where facets 7, 8 and 9 are located belong to the right, namely, left 4 and right 3, and there are two before and after. This principle is also applicable to corner block coding. The corner blocks where the corner faces 1, 2, 4 and 5 are located belong to the left, and the corner blocks where the corner faces A, B and C are located belong to the right. Pay attention to the left and right numbers when coding, to avoid repeated coding of the coded magic block when there is a small cycle!
Where there is a will, there is a way. It is not difficult to learn blind twisting, but it is not easy to remember the coding order! We should learn it completely before closing our eyes to practice, so that it is efficient. Only through the accumulation of a large number of long-term exercises can we be handy, and we must know that haste makes waste, and we can learn advanced blind twisting methods.