If you replace a capital letter with a lowercase letter, it means to pinch two layers of rotation. For example, l (left double) is spun the same way as L (left), except that it is pinched and turned in two layers. Another example is d' (Xia double), which is the same as D' (Xia), except that it is pinched and turned in two layers. l2' (yesterday double 2) is similar to L2' (yesterday 2).
Third Order Rubik's Cube***There are 26 blocks, excluding the 6 center blocks that have only one color, there are 12 prongs (with 2 colors) and 8 corner blocks (with 3 colors). We need to give each prong and corner a unique code to make it easy to distinguish them. For example, a "yellow-blue" prism has a yellow face of [1] and a blue face of [1']. A corner block has 3 corner faces.
I. Determine the code
Now determine a code for each prism, respectively, 1 ~ 9 and ABCD. for example, yellow-blue, yellow-orange, yellow-green prisms of the yellow side of the code for 1, 2, 3, the other side of the code for 1', 2', 3' (see Figure 2) 1~9 are pronounced as the original sound, while 1' ~ 9' are pronounced as a variant, basically as the second tone (3', 5', 9' exceptions are pronounced as the fourth tone). The blue and white prongs are A and B, and the green and white prongs 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-white 8, 8' red-green 9, 9'] in addition to the letters indicated by [blue-white A, B, green-white C, D].
Pronunciation is [1 yī一衣依伊医; 1'yí姨移疑遗宜; 2 èr 二佴; 2'ér儿而; 3 Sān-shān 三山删衫杉; 3'Sàn-shàn 散扇擅赡; 4 sì- shì 四寺试事是; 4 'Shi picking up food to know the time; 5 wǔ五武舞捂午; 5'wù雾物勿误悟; 6 liù六遛; 6'liú留流瘤刘硫; 7 qī七妻欺戚漆; 7'qí旗棋骑奇齐; 8 bā八疤芭扒吧; 8 'bá 拔跋茇魃; 9 jiǔ九酒韭久; 9'jiù救舅旧鹫柩; A: ā- ài 阿 爱碍; B: bì避閉蔽臂币; C: xī 西吸稀溪犀; D: dì弟帝递第地].
Look carefully at prongs 1, 3, and 4, 6, and 7, 9, and pronounce them and represent them with a Chinese character. Also look for their corresponding sides, and read the variants, which can be represented by a single kanji, and pronounce them correctly in case you make a mistake when screwing blindly. "Yi" means she, "佴" means
stay, "擅" means unauthorized (action), and "support "denotes support. Walk denotes walking, sulfur denotes sulfur, and there are also scar, banana, bar, and trekking mountain. Whelp means grass root (草茇), drought means ghost (as in drought demon), and there are also vulture, hearse, hindrance (碍事), rhinoceros, concealment, and so on.
Each corner block has 3 corner faces, and we also have to identify a unique code for each one separately. [yellow-blue-orange 1, 1' 8'; yellow-green-orange 2, 2' 8; yellow-green-red 3, 3' A; blue-white-orange 4, 4' 9'; green-white-orange 5, 5' 9; green-white-red 6, 6' B; blue-white-red 7, 7' C].
Corner codes 1, 2, and 3 are on the top side of the cube, and the other corresponding corners 1', 2', and 3' are on the front and back of the cube, respectively; look carefully. Corner faces 4, 7 and 5, 6 are at the front and back respectively, and the corresponding faces 4' ~ 7' are at the bottom of the Rubik's Cube; 8 and 9 are at the left ABC is at the right, please find them carefully in order. Corner faces are pronounced and represented by the same words as the prism faces. The code for each prism and corner face must be memorized; this is the most basic work in blind twisting.
Second, blind screwing formula
This method of blind screwing is to first restore the 12 prongs, and then restore the 8 corner blocks. The starting point of the prism block is "yellow and red" prism block, the starting point of the corner block is "yellow, red and blue" corner block, so the two magic blocks of the face are not code, their yellow side are designated as Q. Blind screwing formula used is divided into "change prism formula The blind twisting formulas used are divided into two types: the "rib-changing formula" and the "corner-changing formula", there are 3 rib-changing formulas and only 1 corner-changing formula. You should practice repeatedly with an undisturbed Rubik's Cube and pay attention to your technique, which should be both coherent and fast!
●Rib-changing formula
Formula ①: (R U R'F') (R U R'U' R'F R2 U'R 'U')
Equation ②: (R U R'U' R'F R2 U'R'U') (R U R'F')
Equation ③: (R'U2'R U) (R'U2'L U') (R U L ')
●Changing angles formula
Formula ④: (L U L U2 L'R') (U L U'R) U2 L2
Observation of formula ①, commonly known as: (Shun Shallow) (Shun Hand Oil Money Two Heads Three). We call (R U R'U') Shunshou, pronounced (right on the oil sháng); its last digit changed to F' is called Shunshou, (R U R'F') pronounced (right on the oil sháng); and we put (R2 U 'R'U') is called two heads and three, because the head turns twice and drags three reversals behind it. Its function is to send the yellow-red prism to the yellow-blue prism (actually interchanged), but the corner blocks yellow-red-blue and yellow-green-red are also interchanged, which can be written as Q → 1. Formula ② is almost the same formula as formula ①, as long as the two brackets before and after the contents of the exchange of the position of the two brackets can be, carefully compared. It is commonly known as: (Shun hand oil money two head three) (Shun shallow). It works by sending the yellow-red prongs to the yellow-orange prongs, but the corner blocks yellow-red-blue and yellow-green-red are also interchanged, and can be written as Q→2. The first two brackets in formula ③ both contain (R'U2': oil sháng 2), which characterizes it. Its function is to send the yellow-red prismatic block to the yellow-green prismatic block, but the corner blocks yellow-red-blue and yellow-green-red are also interchanged, and it can be written as Q→3. Note: Q→1 means that prism Q is sent to prism 1, and the other expressions are similar. Repeated practice, observation and comparison!
For the formula ④, it is the formula for the exchange of angles, read: (left on the left on the 2, yesterday oil) (on the left sháng right) on the 2 left 2 . It is the role of the corner block yellow-red-blue transmission to the corner block orange-white-green position (actually interchangeable), can be written as Q → 9, is the corner surface Q sent to the corner surface 9, similar to the prismatic transmission, but at the same time the yellow-red prism and yellow-blue prism is also interchanged.
Repeatedly practicing the above four formulas, pay attention to the way the fingers and mutual cooperation. For the exchange of prongs, if it is "Q → 5'", we must first turn [ l2'] (this step is called a bridge), and then use the formula ② to exchange prongs, and then turn [ l2'] (this step is called a return) to achieve the purpose! This is equivalent to turning 5' to 2 first, and then using formula ② to change the prongs. When turning l2', the left thumb pinches the bottom, the other fingers pinch the top, and then the thumb turns to the top. Remember: when we change the prongs, we pinch both layers to "bridge" and "return", while the corner change introduced later will only turn a single layer to "bridge" and "return". "Return". Another example is "Q→D", we should first turn [ l2'] (this step is called bridging), then use formula ① to change the angle, and then turn [ l2'] (this step is called returning) to achieve the purpose! Another example is "Q→8'", first turn [ d'] and [ l2'], which is a bridge, equivalent to 8' to 3, then use the formula ③ to change the prongs, and then turn [ l2 'd] (return), and you have achieved your goal! The return is the opposite of the bridge, from back to front and in reverse!
For a corner change, if it is "Q→4", first turn D' (bridge), then turn formula ④, and finally turn D (return). This is equivalent to the first corner face 4 to 9, and then use the formula ④ to change the corner, change the original way back. Changing the prism block to turn the double layer with a lowercase letter, change the corner block to turn the single layer with a capital letter, which should be especially careful not to be confused!
If the exchange of prongs "Q → 5", the code is 5; "Q → 8'" code is 8', are expressed in a number or letter. Similarly, if a corner change is "Q→4", the code is 4; "Q→C", the code is C. Now make a list of each case of a corner change and a corner change, practicing them one by one. Think about how they came to be, so you can speculate on your own, don't memorize them!
Exercises for commutative angles: [1'l' formula ③ l; 2'ld'l formula ② l'dl'; 3' l formula ①l '; 4 d'l formula ② l'd; 4' l' formula ② l; 5 dl' formula ① ld'; 5 'l2' formula ②l2'; 6 dl' formula ②ld'; 6'l formula ②l'; 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 ①l; B l2 formula ③l2; C l formula ③l'; D l2 formula ①l2].
Prisms 1, 2, 3 directly with the corresponding formula, no bridging and return, prism B is to turn l2 'and then formula ③, and then turn l2 'return, similar to 8'. Be careful not to confuse the turn method [ l' yesterday double ] with the code [ 1' shift ], they look as if they are the same!
Here's a practical application (a list of corner changing exercises follows).
★Take a Rubik's Cube and break it up as follows: RULU'F2BR2U DBDR . The code is as follows →
Changing the prongs: [C 6 2 B]-[5 3'1 9']-[7'4'8'7]
Changing the corners: [2'1 9 'B]-[A 9 7'1']
Analysis: After the cube is disrupted, look at the starting point Q of the prisms first, it is green (white), and you have to send it to C (D), touch it with your fingertip and write down "C"; Here it is orange (green), it is to be sent to 6, again touch it with the tip of the finger and write down "6"; so on, then write 2, B, 5, 3', 1, and when it comes to "9'", it is a red-yellow prism, which is already a red-yellow prism. is a red and yellow prong, and should have stayed at the point of departure, the next code casually turns it to a prong 7' which has not yet been pointed to, and writes down 7'; and so on down to 4', 8', and 7, * * * writing out twelve codes, which indicate that the prongs are to be turned twelve times in changing them. The underlined letters indicate that the yellow and red prongs are now switched here. For example, 7' here, after using the formula, the yellow and red prongs are sent here. Every four codes are written in one bracket, and three brackets are used for the prong change***. The corner change uses only two brackets, and if you hit a yellow-red-blue corner block halfway through, it is also sent first to a corner block that has not yet been ordered, which is similar to the prong change, and the underlined letters mean the same thing. We can go through the list of prong-swapping exercises and restore each prong one by one.
Now to the corner of the code, the starting point is the corner Q, it is green (yellow-orange), should be to the 2' place, with a finger touch the corner of the face, write down the "2'"; but this corner is blue (yellow-red), should have stayed in the starting point, the next code! We then casually turn it to a corner block 1, which has not yet been touched, and write down "1"; this will be followed by 9', B, A, 9, 7', 1', *** writing eight letters, and changing the corner blocks eight times. Halfway through, the yellow, red and blue corner blocks also appear like prismatic blocks, "small loop", temporarily transferred to the "1".
Exercises for changing corners: [1 LD'④ DL'; 1'L'B ④ B'L; 2 B ④ B'; 2'L2 ④ L2; 3 BL'④ LB'; 3'B'D④ D'B; 4 D'④ D; 4'L2'B④ B 'L2; 5 LB④B'L'; 5'L'D'④ DL; 6 D'④D'; 6'B '④ B; 7 D 'L④L'D; 7'DB'④ BD'; 8 L'④L; 8'L2④ L2; 9④; 9'L④L'].
The corner change exercise is also not to be memorized, we can speculate on our own. Angle face A to turn B2 first, after using the formula ④, and then turn B2 to return can be. The corner face B should turn B2L', and the corner face C is to turn D2.
In the above blind screwing example, the coding sequence of the corner block blind screwing is: [ 2'1 9'B ] - [ A 9 7'1'], we can also According to the list of corner exchange exercises to go one by one to restore each corner block, in order to get the initial understanding of this blind screwing method.
Three examples of blind screwing
We use a few specific examples to deepen the understanding of this blind screwing method. The focus is to change the prongs (or corner) when there is a "small cycle" of the situation, that is, halfway across the yellow and red prongs (or yellow, red and blue corner blocks) how to deal with the problem. Pay special attention to the underlined code numbers or letters in the following examples!
Example 1: RBLD F2R2D' B'D'LU'
Switching prongs: [4'3'A 9] - [1 6 '7'C] - [1'2 5 8 - 2(1)]
Corner change: [C 1 3 6] - [9 4'8']
The starting point of the prongs, Q, is blue (orange), so click your finger at 4 ' at the first code 4' is noted. Here is the green (yellow) color, click at 3' to write down the second code 3'. Next is A. When you reach 9, you hit the yellow and red prongs, and there is a "little loop", so you send the yellow and red prongs to 1. This 1 is underlined, so be careful, because the next time you hit this prong, it will be the same yellow-red prong that was at the start! Next is 6'7'C, then 1', which is already a yellow-red prism, and there is a second "small loop", which we send to 2, which we haven't clicked on yet. The next code is 5 8 2, and the code ends. Here there are two "small loop", there are 2 codes underlined, **** there are 13 codes, carefully experience. It should be noted that: the prism block code must be an even number, if there is a single number, we must add a code at the end of the "1" (see the red 1 in parentheses above). If you do not add a turn once the formula ①, the back of the corner block blind screw will be wrong!
Corner block code is similar to the prismatic block, the first code for C, but encountered a yellow-red-blue corner block (starting point corner block), there is a small loop, we arbitrarily send it to the corner of the surface 1, this code is underlined, followed in turn by 3 6 9 4' 8' corner block code end, **** there are 7 yards.
In fact, in the process of coding is also in the "poetry", that is, the code is converted to the corresponding representative of the word, every 4 yards for a small sentence, easy to remember! Example 1 of the poem is as follows: change the prongs [stone fan love wine, medical tumor odd rhinoceros, move two dance bar, two medical]; change the angle [rhinoceros walking on the mountain, leek stone plucked]. After composing the poem, but also in the depths of the brain to explain and connect the lines: [a stone fan surprisingly love wine, it heals tumors for the sake of that peculiar rhinoceros. Insisting on moving two miles it still dances the banana and sends it to the second hospital]; [On the way, that rhinoceros is walking according to the hill and bites the leek and pulls it out from the stone cracks]. With the verse feel free to explain it, the more exaggerated the easier it is to remember!
Example 2, Rubik's Cube upset: R2UL2B FRUL R2 U
Switching prongs: [5'A 9'8 ] - [7'3 2'8'] - [ C 4 '6 1' - D(1)]
Corner change: [ B 9 3 4 ] - [ C 8 1']
Here the prongs encoded to 9' appeared to have a small loop (touching the yellow and red prongs), sending it to 8, and later pointing to 8 ' when there was also a small loop, and sent it to C. Two yards were underlined. Coding completed ***13 yards, every single should have a code "1" added at the end. The corner block coding did not show a small loop.
Compose a poem: change the prongs [fog love to save the bar, chess mountain child trekking, sucking six aunts, "lichen"]; change the corners [to avoid wine three or four, creek eight aunts]. Explanation: [I love to save the plantain seedlings in the fog, it will be planted on the chessboard mountain and son trekking up, so that the seedlings to absorb the rain, the six aunts also came to pick up some "lichen"]; [I told her to have avoided the white wine three or four days, the creek eight aunts are looking for me].
Example 3, Rubik's Cube disruption: RU2LD L'UDR2 L'U'BR'
Prong change: [A 5 6 4'] - [9'1 D 3 '] - [8'2 7'2]
Corner change: [8'2 3 9'] - [B 7'5 3']
The prong block encoding has one minor cycle, ***12 codes, and every double does not need to be added to turn the formula once ①. The corner block code also has one minor loop, and the choice is sent to corner face #3. Compose a poem: change the prongs [I love martial arts six stones, on the medical brother scattered, pluck two ride two]; change the corner [pluck two three uncle, arm flag to cover the fan]. Explanation: [I love practicing martial arts and hit six stones, my brother got separated on the way to the doctor, I pulled out of the second hospital's injection and rode two miles to frantically look for it]; [The search was unsuccessful, I pulled out my legs and went up to the second floor to look for the help of my third uncle, and we both had flags tied to our arms and fans in our hands, so I hope my brother can find us].
Example 4: The Rubik's Cube is broken: R2F2LR UDRL U2 D2
The prongs change: [5'8'2 1 ] - [6'D 9'3] - [4'B 7'1]
[4'B 7'1]. '1]
Corner change: [C 6'8'4'] - [9 2 A 2]
The prong block is encoded with one small loop, ***12 yards on every double; the corner block is also encoded with one small loop, choosing to send it to the corner face of #2. While encoding at the same time every four yards as a small verse, randomly converted into the corresponding representative word. Interpretation in the brain pay attention to the back of the verse with the front of the series, easy to remember, anyway, the interpretation of the right in your hands, how to explain it.
Compose a poem: change the prongs [Fog plucking two doctors, "Liu Di" old shirt, stone wall flag clothes]; change the corners [Streams plucking stones, wine two love two]. Explanation: [In the fog I pulled out the bamboo poles on the wall of the second hospital, on which was the old shirt of "Liu Di", and on the stone wall there were only some flags and clothes left]; Changing horns [I jumped over the stream by the courtyard, and pulled out the stalagmites and hurriedly escaped, which was a drunken trouble to the second hospital in fact, I love the second hospital].
Repeatedly practicing the coding of the above examples, focusing on learning to deal with small loops, starting to be able to use a pen to help with the coding, and eventually reaching direct observation of the coding!
In order to code without omission or repetition, we can use the principle of left four right three, prism 1, 4, 5, 6 where the prism block is attributed to the left; prism 7, 8, 9 where the prism block is attributed to the right, which is the left 4 right 3, and there are also before and after the two. Corner block code also uses this principle, corner face 1, 2, 4, 5 where the corner block belongs to the left, corner face A, B, C where the corner block belongs to the right. Coding should pay attention to the left and right side of the count, in order to prevent omission or a small loop to the encoded magic block repeat code!
Where there's a will, there's a way. It's not hard to learn how to twist blindly, but it's not easy to memorize the coding sequence! We have to learn it completely before practicing with our eyes closed, so that the efficiency is high. It is only through the accumulation of a lot of practice over a long period of time that we can do it properly, and we should know that we can't do it quickly enough, and then we can go on to learn advanced blind screwing methods.