This tutorial introduces the fastest recovery method in the popular third-order Rubik's Cube Fast Recovery Method (CFOP). If you haven't learned the simple recovery method, you can enter the Rubik's Cube tutorial first, and then learn this tutorial. Although some formulas in this CFOP tutorial are long, they are all convenient formulas. This tutorial requires a lot of skills, and the magic friends can fully appreciate the subtlety of the skills during the practice. The advanced tutorial of this site is compiled from the learning experience of a group of domestic experts, and this site has been committed to writing better tutorials for everyone's convenience.
If you haven't practiced the most basic techniques, you can go to the basic techniques practice page, learn the basic techniques first, and carefully understand the ideas of techniques, so that you can better understand the subtleties of a good formula when you practice techniques with formulas in the future. Magic friends who need advanced video tutorial CD can click the following link to enter the store manager Taobao shop to buy: advanced manual.
Cross (bottom cross) F2L (first two layers)
OLL (upper color flip)
Upper recovery
Magic friends who have not mastered the introductory gameplay, please master the introductory gameplay first and then watch this tutorial. Magic friends who have mastered the beginner's gameplay, before learning CFOP or who are learning CFOP advanced gameplay, can learn from the experience of Rubik's Cube masters summarized by the webmaster. I believe the experience of these masters will be of great help to everyone's study.
There are three main points in advanced gameplay: first, reduce recovery; Second, reduce the time spent in a daze; Third, practice skilled techniques.
First, reduce the recovery steps.
The key point to reduce the recovery steps is to master all the formulas of advanced gameplay as soon as possible. Why? Because it takes an average of 100~ 130 steps to recover, while advanced gameplay takes about 60 steps to recover. In the process of memorizing advanced play formulas, mastering certain scientific memory rules will save a lot of time and be more efficient. (The key point is: the order of memory)
The general memory order is: bottom span, F2L, PLL, two-step OL, other OL.
OLL has 57 formulas, which are the easiest to remember and the easiest to forget. (Because there are too many cases, it is difficult to practice the memorized cases, and it will be better to strengthen the practice software. ). The simpler things are actually the most difficult to practice, and the bottom crossing is the simplest, but it usually takes more than 6 months of practice and summary, and it takes 2 seconds to complete. Therefore, the suggested order is: cross → [PLL and F2L synchronization ]→ OL.
Practice the projects in order, remember the time, and practice to a satisfactory time goal.
1 backcrossing was completed in 7 days, 6 months and 2 seconds, and the first group of F2L was observed.
1+2 The first two basic laws (F2L) take more than 7 days 15 days. Several formulas deal with all situations and complete four groups within 20 seconds.
2+3 All the first two floors 4 1 standard formula (F2L) 1 month continuously complete four groups of slots for more than three months, and 10 second complete four groups.
3 The first two layers (F2L) are usually nonstandard. It takes 3 months and more than 6 months to complete F2L with fewer steps, and there are fewer hand changes. Group 4 finished in 8 seconds.
2. Two-step top-level color change OLL, 7 days, 15 days or more, completed quickly in multiple directions.
3+2 All top-level color-changing OLL is completed within 3 months, 6 months and 2 seconds, which can be quickly identified.
1+2 high PLL 1 month, 3 months and 2 seconds, fast identification.
Supplementary explanation:
1 and "cross" are understood by ourselves from the basic formula of 12. Careful study, that is, those positions that can persist in practicing 10 minutes every day, practice for more than half a year with reference to the following stages. I believe they will soon be exercised into positive results.
Practice steps: ① After the interruption, the analysis is not limited to time, and it should be completed within 8 steps as far as possible; (2) after the interruption, there is no time limit for analysis, and blind attempts are made to complete it; ③ Analyze the steps completed in 8 steps within 15 seconds after the interruption; (4) Analysis after interruption shows that the blind twisting should be completed in 8 steps within 15 seconds; ⑤ Observe in 15 seconds, complete the bottom crossing in 2-3 seconds, find out the first group of F2L to be completed while completing the crossing, and proceed to the next step after the crossing is completed.
2. "F2L", when you start learning F2L, you can master three basic laws, and then study the principle of F2L by yourself. Therefore, every case can be solved by three basic laws; Then gradually skillfully recite all the other 27 formulas. In the process of reciting formulas, combined with the video tutorial and my own technical characteristics, I choose the most convenient formula strengthening exercise at this stage.
PS: Because there are many places to observe in F2L, when you start studying, you have to stare at the square for a long time before you can find the one you want ... I believe that with persistent contact, you will gradually find that your observation time will become shorter and shorter, and the connection between the front and the back will become more and more coherent. Haha, the gap between you and the master is getting smaller and smaller. Come on!
3. OLL has 57 formulas, which are easily confused, so it is difficult to remember. But a large number of formulas are very convenient and easy to remember. Those that are easily confused can be compared as much as possible to find out some obvious differences between them, and then they can be distinguished quickly by strengthening their memory and practicing more. In the process of memorizing 57 formulas, we can first remember 7 situations that have been crossed, and then remember 8 situations in the point column. For the other 42 cases, you can refer to the order in the card formula to compare your memory, or you can give priority to the formula that you think is easier to remember according to your own preferences. Generally speaking, it is easy first, then difficult, and simple first, then complicated.
4. "PLL", its formula is only 2 1, but several formulas are difficult to observe, just like F2L, but the observation of F2L is to find the square, and PLL is to observe the "relative position" of each square. At first, I really often stared at the square in a daze, and stayed for ten seconds. There are several PLL technologies with high difficulty coefficient, which need more practice to achieve satisfactory completion time (within 2 seconds).
Because the observation of PLL and F2L is very complicated, it is necessary to practice as early as possible, and OL can recite it slowly. Anyway, if you encounter an unsolvable case, you can solve it in two steps, and then step by step, and the number of seconds begins to decrease. I believe that with continuous practice, you will soon gradually reduce from more than 60 seconds to about 15 seconds. (PS: Two-step OLL means that when we encounter 50 non-intersecting series, we first make a cross series with the formula above, and then finish it quickly with the seven OLL formulas memorized first. )
Second, reduce the time spent in a daze.
Reducing the time spent in a daze is actually a very difficult thing. There are many reasons why people are in a daze in front of the square. There are two main reasons: 1, staring blankly and changing hands in a daze.
The habit of ordinary people is: observation → rotation → observation → rotation. When observing, the hand will stop, which is equivalent to being in a daze and will waste a lot of time. If the observation time can be reduced, the speed will be obviously improved.
1, observe in a daze
Observe Coss' daze
Many people will get stuck at the beginning of the intersection, because the four sides are too widely distributed to find, so every time they turn one, they have to stop to find another one, and then by the time the intersection is completed, more than ten seconds have passed.
How can we improve this "miserable situation"? Fortunately, in the official Rubik's Cube competition rules, there is fifteen seconds of observation time before turning the cube, so before starting to turn the cube, we can slowly observe the directions of the four side blocks, plan the path to turn later in our minds, and when everything is arranged, we can turn the cross at a speed that doesn't even need to look at it at the beginning of the timer. (The master cross-recording is completed in about 1.5 seconds to 2.5 seconds). It is difficult at first, so you can practice step by step. Let's introduce the early practical experience of CROSS for your reference: 1. Don't turn around in a hurry, first observe where the four white blocks are ... (If the background color is not white, you can paint other colors yourself); 2. First, find the one that is the easiest to return. Think about it and imagine where the second white edge will move when you return to the first white edge you choose. 3. Think about the "new position" of the second white edge and how to turn it back.
I'm sure that at this point, some people's heads are starting to hurt, but it doesn't matter. You can practice the first and second white edges once, and then repeat the above method to complete the third and fourth white edges. We don't have to directly consider the quadrilateral path. Many times we can be "3+ 1", that is, we only observe three white edges. Before turning the fourth white edge, we stick our fingers on it, and after turning three edges, it is easy to know where the fourth edge is. And always pay attention to where the "empty position" is, so as not to squeeze out the finished edge. Simply master these skills, combined with the basic formula of 12 cross, I believe you have understood how to strengthen the practice of cross.
Observe F2L's daze
When turning the fourth side of the cross, slow down your hand and use your eyes to find the pair of the first group F2L. (PAIR means "edge+corner"), when you go to the first group, your eyes will look for the pair of the second group, the pair of the third group and the pair of the fourth group. When you go to the fourth group, you can think that you will soon be a master of the Rubik's Cube, Q:).
Therefore, when practicing F2L, we must practice "eye-hand coordination". So let go of your hand slowly at first, so that your eyes can find the right one, and then the goal is to keep doing the above 1~5 movements. So we should patiently "turn slowly" until our eyes can keep up, and then slowly speed up our hands ... But there is a big premise, that is, we should be familiar with the turning method of F2L, and it is best to practice observing a good pair, close our eyes and put them back ... so that our eyes can have time to find the next group.
Observe PLL's daze
People who practice PLL will definitely have a headache for the observation of PLL, because it is very difficult to observe its relative position and it is not easy to find the reference point. The reference point of PLL is like F2L, looking for a pair, but F2L is looking for a pair of parts, while PLL is looking for a complete pair. There are many rules in the 2 1 formula of PLL. You can sum up the characteristics suitable for your own memory according to your own memory characteristics, so that you can react quickly, get your eyes at once, and integrate your mind and body.
Change hands in a daze
When ordinary people play with diamonds, they will have the habit of picking them up and changing their directions, because most formulas in our memory have only one direction. When we encounter a familiar case, we will change the square to the direction we remember, and then start to solve it, so there is a phenomenon called "hand-changing time" ... When we practice haggling over the number of seconds, hand-changing is a waste, so the habit of changing hands between OL and PLL will be the most serious, so
1. Simple OL and F2L should be done from more than two different angles;
2. If you need to change the direction, you can consider using "u, U'" to reduce changing hands. The function is the same as changing hands, but the fluctuation time is sometimes less than changing hands;
3. Master the basic techniques flexibly, understand the skills and essentials of changing hands, change hands in place as soon as possible, hold the Rubik's cube firmly, and then quickly start the next rotation. This is also the key point of formula optimization. Although there is a change of hands, the change of hands is very smooth, and the connection between the front and the back is very good, and the purpose of changing hands is achieved at the fastest speed.
Finally, to sum up, the real practice method to reduce daze is to "slow down" ... slow down until your eyes can keep up with your hands, so that your hands won't stop waiting for your eyes. When the observation speed is trained, it will naturally accelerate. Over time, some unbreakable bottlenecks can be easily broken! ! These two look simple. If you are a friend who has played the Rubik's Cube for a while ... you will definitely find these two points super super difficult. Come on, the future is bright and the truth is tortuous:)
Third, practice skills.
Practice basic skills first, and you can basically master the essentials of basic skills in a week or so. After you have basically mastered the essentials of basic techniques, you can memorize and practice advanced formulas for the techniques in the video tutorial. The practice of basic skills is basic skills. The more solid this basic skill is, the faster you will get started when practicing formula skills in the future, and the better you will understand and comprehend it, and vice versa. Therefore, the basic skills require us to practice repeatedly in the process of learning advanced gameplay. To paraphrase a word, there is no fastest, only faster. I believe your hand can be turned out at a faster speed.
Cross (bottom cross) F2L (first two layers)
OLL (upper color flip)
Upper recovery