How to prepare a rubik's cube for assembly. Video: working with the last layer

So, you got acquainted with the Rubik's Cube 3x3x3 puzzle and you liked it. But how to learn how to collect a cube, and even better how to collect it faster, you don’t know yet. Especially for you, novice puzzle lovers, I am making this instruction, which will not only help you learn how to solve the Rubik's Cube, but also do it faster than 1 minute (in the future, we plan to create instructions for those who want to solve the cube faster than 30 seconds).

Let's start with the fact that here you can, this is especially true for those who want to collect the cube quickly, and the old cube does not allow this for technical reasons =)..

The most common 3x3x3 cube assembly technique is Jessica Friedrich's technique. This technique breaks the assembly of the Rubik's Cube into 4 stages. And at the initial assembly level (at a speed of up to 1 minute), you need to learn not so many formulas. I will try to make instructions that will be understandable and will contain all the necessary information.

First, briefly about the assembly steps.

Steps to assemble a Rubik's Cube

1. We collect the cross. The task of this stage is to place 4 cubes in their places around the white center (many people use white as the main color when assembling, you can use any).

2. In the method of Jessica Friedrich, at the second stage, the first 2 layers are immediately collected ( F2L – first two layers). But for a beginner puzzle builder, this will be quite difficult, so we will look at how to do this step in 2 steps, simplifying the task a bit.

3. Assembly of the yellow side of the cube ( OLL-orientation of the Last layer). At this stage, we collect the yellow side of the cube. The assembly of this stage, even by advanced speedcubers, is not always performed using a single formula. We will look at how to assemble the yellow side in a few steps.

4. The last stage of the cube assembly is called Permutation of the Last Layer (PLL). At this stage, it is necessary to place the corner and edge cubes correctly in the last third layer of the puzzle.

Now let's move from theory to practice.

So, let's start assembling the cube. For the convenience of learning, please remember that the cube must be kept with the white center down and the yellow up!

The assembly of the die begins with a cross on the main side, usually white. In this manual, white will be the main. This stage is carried out completely intuitively, there are no formulas, but there are typical situations that should be remembered to speed up the assembly.

Important! Collecting is not just a white cross on the white side. Each edge cube has two colors, and it must match two centers, white and one of the other four colors (you can see in the photo how the orange-white and green-white edges match the orange and green centers).

1. Check the side with the white center for white edges. If they are, then simply by rotating the bottom layer of the cube, you can match this edge with the second center. See how to do it in the video below. Let me remind you that you need to collect the cube with the white center down!

2. If you have already completed the first step of this step, turn your eyes to the top of the die (the side with the yellow center). If there are white rib cubes near the yellow center, then it is easy enough to install them in the right place on the main side (with a white center). To do this, rotate only the top layer to match this edge with the second center (orange, red, green or blue), while turning the side on which the center and the edge coincided face you. After the edge coincides with the additional center, you need to rotate the front face two times so that the white color is not at the top of the cube, but at the bottom (where the white center is). Watch a visual application in the video below.

3. All other situations are solved by raising the die with the white side up (the side with the yellow center) and turning down to the white center as in point 2. Below is a video with illustrative examples.

I propose to assemble the first two layers in two steps. After assembling the white cross, our task is to install four corner cubes in their places, after which four more edge ones.

Like the assembly of the cross, this can all be done purely intuitively.

Installing corner cubes in the first (bottom) layer

For ease of perception of information, I will demonstrate how to install corner cubes.

To put the corner cubes in place, you need to learn one trick, which among the speedcubers is called “bang bang”. The formula for this looks like this R U R'U'. read here.

In the video, I looked at 4 situations that arise during the installation of corner cubes.

The corner cube faces the white side to the right (we hold the cube with the white center down). Doing the U'F'UF form
The corner cube faces the white side to the left (we hold the cube with the white center down). We carry out the form URU'R'.
The corner cube looks up with the white side (we hold the cube with the white center down). We perform the form R U R’ U’ R U R’ U’ R U R’ U’ (three bang-bang) The corner cube is in its place, but turned upside down (we hold the cube with the white center down). We perform the form R U R’ U’ (one bang-bang), after which the corner cube will be on top (on the side with the yellow center). From this position, we perform one of the formulas described above.

After setting all the corners in place, the cube should look like this:

Installation of rib cubes

After you have placed all the corner cubes in the bottom layer, our task is to put the edge cubes in their places. After that, the F2L stage will be completed.

The installation of rib cubes is carried out using one formula and its mirror execution. Before executing the formula, the main thing is to set the edge cube in the right place, this is done by turning the top layer.

The edge cube must be set so that the color of the side face matches the color of the central cube of the middle layer.

1. If after that the rib cube is to the left of its place, we execute the formula URUR 'U'F'U'F.

2. If the edge cube is to the right of its place, then we perform the mirror formula U'L'U'L UFUF'.

3. There are cases when the rib cubes are not in their places, or in their places, but at the same time turned upside down. The above formulas will help lift the rib cube to the top layer, after which you can easily install it in the right place.

After assembling the first two layers, it is necessary to assemble the side with the yellow center, this stage is called OLL. At the same time, our task is simply to collect the yellow side, at this stage it is not at all necessary that all the cubes be in their places.

We look at the video how to install rib cubes when assembling the first two layers

1. Corner

After you have collected the first two layers, the yellow side of the cube may look like this:

But in practice, during the assembly process, other combinations may fall out. Consider how to get out of all these situations using universal formulas.

Our task is to make a corner of the yellow cubes. After assembling the first two layers, you can see completely different combinations of yellow cubes at the top, but most often we get either a corner or nothing. Nothing means that neither a corner nor a cross nor a fish fell out. There are several possible combinations in the images that can be before the corner is assembled.

The corner is very easy to assemble. We execute the formula: F RUR'U' F. After executing the formula, you will get one of the many combinations that are possible with an OLL assembly that contains a corner. Let's move on to the next step.

2. Cross

The cross can be assembled using one formula, but only at the stage of the assembled corner. There can be many combinations based on the corner, but to assemble the cross you need to know only one formula. So, before assembling, you need to take the cube so that the corner vectors look: one to the left, the second looks up. Next, we execute the formula: F RUR'U' RUR'U' F (turn the front, make 2 bang-bang and return the front). As a result, you will get one of the combinations based on the cross:

After that, you can proceed to the assembly of the fish.

3. Fish

We need a combination of fish in order to use one formula to collect the entire yellow side. In fact, after assembling the cross, the same formula will help you make a fish, and after a fish, and completely OLL.

For this operation, there is a universal formula that will help us - RU'-RU-RU-RU'-R'U'-R2 (mirror version on the left: L'U-L'U'-L'U'-L'U- LU-L2). In the video, I tell you in which cases which formula to use.

2. Placement of corner cubes

In the video, I show you how to arrange corner cubes in two of the most common cases.

The formula for case one (the formula follows from the position shown in the video): R'U2RDR'U2RDR'U2RDDR'U2R

Formula for case 2 (the formula follows from the position shown in the video): R'U2RD2R'U2RD'R'U2RD'R'U2R

These formulas are easier to learn intuitively than just memorize.

The famous puzzle, which consists of several colored sectors combined into one cube, appeared in 1974. The Hungarian sculptor and teacher decided to create tutorial to explain group theory to students. To date, this toy is considered the best-selling in the world.

But, success came to this puzzle only when the German entrepreneur Tibor Lakzi paid attention to it. He, together with the game inventor Tom Kremer, not only launched the production of cubes, but also organized the promotion of this puzzle to the masses. It was thanks to them that competitions in the speed assembly of Rubik's cubes appeared.

By the way, people who are engaged in such assembly of this puzzle are called speedcubers (“speed” - speed). It is not difficult to guess that the high-speed assembly of the "magic" cube is called speedcubing.

The structure of the Rubik's cube and the names of rotations

In order to learn how to assemble this puzzle, you need to understand its structure and find out the correct name for certain actions with it. The latter is important if you are going to find instructions for building a cube on the Internet. Yes, and in our article we will call all the action with this puzzle, according to established expressions.

The standard Rubik's Cube has three sides. Each of which consists of three parts. Today there are also 5x5x5 cubes. A classic cube has 12 edges and 8 corners. It is painted in 6 colors. Inside this puzzle there is a cross, around which the sides move.

A square with one of six colors is rigidly located at the end of the cross. Around it, you need to collect the rest of the squares of the same color. Moreover, the puzzle is considered completed if all six sides of the cube have their own color.

IMPORTANT: In the original puzzle, yellow is always opposite white, orange is red, and green is blue. And if you take the puzzle apart and then put it together incorrectly, it can lead to the fact that it will never be able to be assembled.

In addition to the centers of the cube, the constant components of this puzzle are the corners. Each of the eight corners is made up of three colors. And no matter how you change the position of the colors in this puzzle, the composition of the colors of the corners in it will not change.

IMPORTANT: The Rubik's Cube is assembled by placing the corner and middle sectors in accordance with the colors of the central sectors.

Now that we have understood the construction of this puzzle, it is time to move on to the names of the sides and rotations and their designation in specialized literature.

In the process of assembling a Rubik's cube, it may be necessary not only to move the sides, but also to change the position of this object in space. Experts call these movements intercepts. Schematically, this is shown as follows:

IMPORTANT: If only a letter is indicated in the cube assembly algorithm you found, then change the position of the side clockwise. If an apostrophe "'" is indicated after the letter, then rotate the side counterclockwise. If the number “2” is indicated after the letter, then this means that the side needs to be rotated twice. For example, D2′ - rotate the bottom side counterclockwise two times.

Easy and simple way to assemble: Instruction for kids and beginners

The most detailed instructions assembly for beginners looks like this:

• At the first stage of assembling this popular puzzle, we start with the correct cross. That is, from the fact that on each side of the cube there will be the same color of edges and centers.
• To do this, we find the white center and white edges and assemble the crosses according to the diagram below:

• After the above steps, we should get a cross. Of course, the cross will not be correct the first time and you need to slightly transform the resulting version. If executed correctly, it will be enough to simply swap the edges between themselves.
• This algorithm is called "bang-bang" and is shown in the diagram below:

• Let's move on to the next step of assembling the puzzle. Find the white corner on the bottom layer and put a red corner above it. This can be done in different ways, depending on the position of the red and white corners. We use the "bang-bang" method described above.

• As a result, we should get the following:

• We begin to collect the second layer. To do this, find four edges without yellow color and place them between the centers of the second layer. Then we twist the cube until the color of the center matches the color of the face element.
• As with the assembly of the previous layer, you may need one of several options to achieve this goal:

• After we have successfully completed the previous step, we move on to assembling the yellow cross. Sometimes, he "goes" himself. But, this happens very rarely. Most often, the cube at this stage has three options for the arrangement of colors:

So, the yellow cross is assembled. Further action in solving this puzzle comes down to seven options. Each of them is shown below:

In the next step, we need to collect the corners of the top layer. Take one of the corners and put it in place with the U, U' and U2 movements. This must be taken into account. So that the colors of the corner are identical to the colors on the lower layers. When using this step, hold the white cube towards you.

Next build step

• The final stage of the cube assembly is the assembly of the edges of the upper layer. If you have done all of the above correctly, then four situations may arise. They are solved very simply:

The fastest way. The Jessica Friedrich Method

This puzzle assembly method was developed by Jessica Friedrich in 1981. It is conceptually the same as most known methods. But, it focuses on the speed of assembly. Due to this, the number of assembly stages was reduced from seven to four. To master this method, you need to master "only" 119 algorithms.

IMPORTANT: This technique is not suitable for beginners. You need to study it when your cube assembly speed becomes less than 2 minutes.

1. At the first stage, you need to assemble a cross with side faces. In specialized literature, this stage is called Cross(from English Cross - cross).

2. At the second stage, you need to collect two layers of the puzzle at once. They call him F2L(from the English. First 2 Layers - the first two layers). To achieve the result, the following algorithms may be required:

3. Now you need to collect the top layer completely. Don't pay attention to the sides. The name of the stage is OLL (from the English Orientation of the Last Layer - orientation of the last layer). To assemble, you need to learn 57 algorithms:

4. The final stage of the cube assembly. PLL (from the English. Permutation of the Last Layer - the arrangement of the elements of the last layer in place). It can be assembled using the following algorithms:

Rubik's cube assembly scheme 3x3 in 15 moves

Since 1982, when the Rubik's cube speed contest appeared, many puzzle lovers began to develop algorithms that would help to correctly place the sectors of the cube with a minimum of moves. Today, minimum number moves in this puzzle is called "God's Algorithm" and is 20 moves.

Therefore, it is impossible to solve a Rubik's cube in 15 moves. Moreover, a few years ago, an 18-way algorithm for assembling this puzzle was developed. But, it can not be used from all positions of the cube, so it was also rejected as the fastest.

In 2010, scientists from Google created a program with which they calculated the fastest algorithm for solving the Rubik's Cube. He confirmed that minimal amount steps - 20. Later, the Lego Mindstorm EV3 robot was created from the details of the popular designer, which is able to collect the Rubik's cube from any position in 3.253 seconds. He uses in his "work" 20 step "God's Algorithm". And if someone tells you that there is a 15-step cube assembly scheme, do not believe him. Even the power of Google is "not enough" to find it.

How easy it is to solve a Rubik's Cube: Video

Surely everyone has known since childhood the famous puzzle, named after its creator - Erno Rubik. Pretty quickly, she gained popularity and reached the most remote corners of the planet.

Without proper skill, it will not work to put together a puzzle, even after doing a hundred manipulations, but relatively recently, specialists from Inc. learned how to solve a rubik's cube in 20 moves. They managed to achieve this phenomenal result with the help of a computer, which was given the task of analyzing all possible combinations.

Where did the Rubik's Cube come from?

Back in 1974, the Hungarian architect and teacher at the Academy of Applied Arts Erno Rubik thought about the best way to learn

He wanted a new invention to help students explore the world, and one day he had a sensational idea - to create a puzzle. The task, it would seem, is elementary - to rotate the rows of the cube until each of the sides becomes the same color. But the scheme for assembling a Rubik's Cube is not so simple and can take even several hours in time, without giving a result. The students appreciated and got carried away with the new toy. At that moment, the creator did not even suspect that after many years scientists would puzzle over solving the puzzle until they figured out how to solve a Rubik's cube in 20 moves.

How did the worldwide popularity come

At first, the original toy was not popular with investors. It was believed that its production would not be profitable, since the assembly of the Rubik's cube could be of interest only to intellectuals. Nevertheless, one small company decided to invest in this unusual project, and the puzzle began to conquer Budapest.

A few years later, Tibor Lakzi, an intermediary of one of the German firms, arrived in the city and became interested in the original puzzle, which at that time was very popular among the townspeople. Realizing that the distribution of an amazing invention around the world could bring huge profits, he decided to promote the Rubik's Cube. For novice businessmen Lakzi and Rubik, the main difficulty was the search for investors. But thanks to Tibor's economic education and his commercial streak, the owner of Seven Towns Ltd, Tom Kremer, was soon involved in the project. He undertook large-scale production and distribution, which helped the cube become popular all over the world.

"God's Algorithm"

Since 1982, competitions have been regularly held in many countries, in which the main task of the participants is the speed assembly of the Rubik's Cube. In order to solve the puzzle as quickly as possible, it is not enough just to have good dexterity and ingenuity. A person should know the optimal scheme for assembling the Rubik's cube, which allows you to expend as little effort as possible. The minimum number of steps required to solve the problem is the "God's Algorithm".

Many learned minds and simple amateurs have tried to find a solution. At one time it was believed that the minimum number of steps from any position was 18, but later this theory was refuted. Many years have been spent searching for the optimal sequence, and only in 2010, scientists managed to find out how to solve a Rubik's cube in 20 moves, regardless of the position of the puzzle before the assembly began. This is currently an absolute record.

Who is faster - a car or a person?

On the this moment Colin Burns, an American schoolboy, is the fastest person ever to solve a puzzle in less than 5.5 seconds. And the robot, assembled by British engineers from parts of the EV3 designer, coped with this task in 3.253 seconds. The advantage of the mechanism is not only that the work of all its parts is more coordinated than the actions of a person. Scientists gave him as many as 4 hands, which allow you to perform all operations 2 times faster.

How to learn to collect it

There is more than one standard Rubik's cube scheme that allows you to learn how to solve this original puzzle in a short time. Different build systems allow you to approach the issue in different ways. Which one to choose is up to you. Of course, it is unlikely that without the computer power of Google you will learn how to solve a Rubik's cube in 20 moves, but you will learn how to find simple solutions in a short time. The main thing is that you have enough perseverance. No technique will help solve the puzzle without problems if you are not ready to spend your precious time learning.

But you should not give all your time to this toy. Doctors have noted an increase in the number of patients in psychiatric clinics after the appearance of the Rubik's Cube. And traumatologists began to regularly encounter symptoms, later called "Rubik's syndrome." It appears as sharp

Assembly diagram

There are several schemes that allow beginners to quickly learn how to add a Rubik's cube. Attached to this article is one of them:

1. First you need to assemble a cross, the ends of which are continued on adjacent faces. There is no universal technique - everything comes with practice.
2. Next, you need to complete the entire side on which the cross was assembled, and assemble the belt from the parts around it. It is important to ensure that each belt is the same color.
3. Now you need to collect the second belt and go to the opposite side of the cube.
4. We collect the cross on this side in the same way as at the very beginning.
5. We complete the whole side.
6. Now we put the corners of the cube in order - we make the colors on them match the colors of the sides to which they are turned.
7. It remains only to correctly rotate the parts that have only 2 sides. The cube is assembled.

Now you can learn how to solve one of the most popular puzzles in the world. The universal Rubik's cube scheme will help you with this.

How to entertain yourself when there is a free minute, but nothing to do? Solving all sorts of puzzles is a great option!

The most popular puzzle in the history of mankind is considered to be the famous Rubik's Cube, invented back in 1975 and named after its inventor. After his birth, he instantly "captured the whole world." At least everyone tried to solve the Rubik's cube, but not everyone managed to do it.

How to solve a Rubik's Cube? It is quite difficult to do this without outside help, absolutely independently, this is far from a child's task. You need to know the algorithm for solving the Rubik's cube.

By the way, it has been proven that for any initial situation, a 3x3x3 cube can be completely assembled in no more than 20 moves (turns). The number 20, therefore, is also called the number of God, and the algorithm that collects the cube in the minimum number of moves is the algorithm of God.

If you have long wanted to learn how to solve the Rubik's Cube, then this post is for you. Let's end this task once and for all and have a little holiday for ourselves. Having done this, you can safely put a plus sign in the list of your achievements and then trump in front of friends who do not know how to do this. So, we present to your attention the algorithm for solving the Rubik's cube.

The pictures show the schemes of actions, following which we, in the end, will be able to arrange the colors on the sides of the cube.

First, let's deal with the notation that is used in the diagrams, and with which we will operate in the process of studying the algorithm for assembling a Rubik's cube of the classical size 3x3x3.

Side symbols:

• F - frontal (front)
• Z - rear
• L - left
• P - right
• AT - upper
• H - lower

Now let's deal with turn names, which will be applied to the sides described above.

The letter without any prefixes indicates the rotation of the indicated side by a quarter of a full turn (90 degrees) clockwise(for example, " F" means that we turn the front side a quarter of a turn clockwise, i.e. one shift).

letter with " ’ " means turning the specified side a quarter of a full turn (90 degrees) counterclock-wise. Thus, the inscription F'" means that we must turn the front side a quarter of a full turn counterclock-wise.

letter with " ’ ’ » means that the indicated side is rotated in any direction for half a turn(180 degrees)

Fix: inscription L ’ ’ PF' means that first we rotate the left side half a turn, then we make a quarter turn of the right side clockwise and complete the combination with a quarter turn of the front side counterclockwise.

Flowers arrangement.

Choose the bottom color, it will stay on the bottom throughout the cube building process. Instead of the gray color, which is shown in the diagrams of the Rubik's cube assembly algorithm, there can be any color, it doesn't matter. The place where we moved the part we need will be shown in black. Let's look at the first picture.

We proceed directly to the assembly and the answer to the question "How to assemble a Rubik's cube?"

Step #1.

You need to assemble a cross on the bottom side of the cube so that all the middle side squares correspond to the midpoints of the side faces (look at the diagram). Unfortunately, there is no ready-made algorithm here. We'll have to tinker a bit and move our brains.

Step #2.

The second step is to finish the bottom layer. We need to put the bottom corner cubes in their places. Everything is much simpler here than in step 1 - there are ready-made turn patterns.

If the corner is in the lower layer, but is incorrectly oriented, then it must first be lifted up, rotated as we need and put in its rightful place. Look at the picture and apply the techniques given there. Each turn corresponds to the formula, which we dealt with a little higher.

Step #3.

The bottom layer is assembled. Let's move on to the second, middle layer. We place 4 side cubes of the second layer in their rightful places. If the side cube is in its place, but not rotated correctly, then you can turn it over by doing the following - look at the diagram.

Two layers are assembled. There remains the final push, but do not relax ahead of time.

Step number 4.

The task is to turn the middle cubes of the upper layer upside down with the color we need. At the same time, it does not matter if they are in their place or not, at this step it is not so important. Applying one of the proposed schemes of actions, turn the sides of the upper side upside down with the desired color.

Step number 5.

A cross of the desired color turned out on the top face, however, as you could understand from the previous paragraph, the side cubes of the top face may not be in their places. The task of the 5th step is to put them in their places.

There are 4 options, each of which has its own effective algorithm of actions. We apply them and install the sidewalls in place. The cross of the upper face can be considered fully assembled.

Step number 6.

We continue to figure out how to solve the Rubik's cube? And we are almost at the finish line.

We set the corners of the upper face in place, but at the same time they can be turned upside down.

In this case " in place» means that the corner contains the colors of all the central squares of those faces at the junction of which it is located.

Here are three rotation formulas that correspond to three options for moving the corner cubes. We remind you that the corners may be incorrectly oriented, but they should fall into place.

Step number 7.

Friends, we have reached the finish line! The last step in the assembly of the Rubik's cube remains.

The corner cubes are in place, but some may be oriented incorrectly. They need to be turned over. To do this, perform in pairs the operations prescribed in the scheme of step No. 7 (look at the figure above).

Happened? Well, of course it did! In just 7 steps, we solved the puzzle that kept millions of people awake and doesn't let them sleep.

Naturally, at one time you did not memorize all the steps and formulas for turns and movement. Here you just need to practice and fill your hand.

The main thing is that you now know for sure the answer to the question " How to solve a Rubik's Cube»?

So, you got acquainted with the Rubik's Cube 3x3x3 puzzle and you liked it. But you don’t know how to learn how to collect a cube, and even better how to collect it faster. Especially for you, novice puzzle lovers, I am making this instruction, which will not only help you learn how to solve the Rubik's Cube, but also do it faster than 1 minute (in the future, we plan to create instructions for those who want to solve the cube faster than 30 seconds).

Let's start with the fact that here you can, especially for those who want to collect the cube quickly, and the old cube does not allow this for technical reasons =).

The most common 3x3x3 cube assembly technique is Jessica Friedrich's technique. This technique breaks the assembly of the Rubik's Cube into 4 stages. And at the initial assembly level (at a speed of up to 1 minute), you need to learn not so many formulas. I will try to make instructions that will be understandable and will contain all the necessary information.

First, briefly about the assembly steps.

Rubik's Cube Steps

1. We collect the cross. The task of this stage is to place 4 cubes in their places around the white center (many people use white as the main color when assembling, you can use any).

2. In the technique of Jessica Friedrich, at this stage, the first 2 layers are immediately collected ( F2L – first two layers). But for a beginner puzzle assembler, this will be quite difficult, so we will look at how to do this step in 2 steps, simplifying the task a bit.

3. Assembly of the yellow side of the cube ( OLL – orientation of the Last Layer). At this stage, we collect the yellow side of the cube. The assembly of this stage, even by advanced speedcubers, is not always performed using a single formula. We will look at how to assemble the yellow side in a few steps.

4. The last stage of the cube assembly is called Permutation of the Last Layer (PLL). At this stage, it is necessary to place the corner and center cubes correctly in the last third layer of the puzzle.

Now let's move from theory to practice.

Cross Assembly

So, let's start assembling the cube. For the convenience of learning, please remember that the cube must be kept with the white center down and the yellow up!

The assembly of the die begins with a cross on the main side, usually white. In this manual, white will be the main. This stage, even by successful speedcubers, is carried out completely intuitively, there are no formulas, but there are typical situations that should be remembered to speed up the assembly.

Important! Collecting is not just a white cross on the white side. Each edge cube has two colors, and it must match two centers, white and one of the other four colors (you can see in the photo how the orange-white and green-white edges match the orange and green centers).

1. Check the side with the white center for white edges. If they are, then simply by rotating the bottom layer of the cube, you can match this edge with the second center. Let me remind you that you need to collect the cube with the white center down!

2. If you have already completed the first step of this step, turn your eyes to the top of the die (the side with the yellow center). If there are white rib cubes near the yellow center, then it is easy enough to install them in the right place on the main side (with a white center). To do this, rotate only the top layer to match this edge with the second center (orange, red, green or blue), while turning the side on which the center and the edge coincided face you. After the edge coincides with the additional center, you need to rotate the front face two times so that the white color is not at the top of the cube, but at the bottom (where the white center is).

3. All other situations are solved by raising the die with the white side up (the side with the yellow center) and turning down to the white center as in point 2.

Assembly F2L (two first layers)

I propose to assemble the first two layers in two steps. After assembling the white cross, our task is to install four corner cubes in their places, after which four more edge ones.

Like the assembly of the cross, this can all be done purely intuitively.

Installing corner cubes in the first (bottom) layer

For ease of perception of information, I will demonstrate how to install corner cubes.

To put the corner cubes in place, you need to learn one trick, which among the speedcubers is called “bang bang”. The formula for this looks like this R U R'U'.

In the video, I looked at 4 situations that arise during the installation of corner cubes.

The corner cube faces the white side to the right (we hold the cube with the white center down). We carry out the form U’F "UF

The corner cube faces the white side to the left (we hold the cube with the white center down). We carry out the form URU'R'.

The corner cube looks up with the white side (we hold the cube with the white center down). We perform the form R U R’ U’ R U R’ U’ R U R’ U’ (three bang-bang)

The corner cube is in its place, but turned upside down (we hold the cube with the white center down). We perform the form R U R’ U’ (one bang-bang), after which the corner cube will be on top (on the side with the yellow center). From this position, we perform one of the formulas described above.

After setting all the corners in place, the cube should look like this:

Installation of rib cubes

After you have placed all the corner cubes in the bottom layer, our task is to put the edge cubes in their places. After that, the F2L stage will be completed.

The installation of rib cubes is carried out using one formula and its mirror execution. Before executing the formula, the main thing is to set the edge cube in the right place, this is done by turning the top layer.

The edge cube must be set so that the color of the side face matches the color of the central cube of the middle layer.

1. If after that the rib cube is to the left of its place, we execute the formula URUR 'U'F "U'F.

2. If the edge cube is to the right of its place, then we perform the mirror formula U'L "U'L UFUF'.

3. There are cases when the rib cubes are not in their places, or in their places, but at the same time turned upside down. The above formulas will help lift the rib cube to the top layer, after which you can easily install it in the right place.

After assembling the first two layers, it is necessary to assemble the side with the yellow center, this stage is called OLL. At the same time, our task is simply to collect the yellow side, at this stage it is not at all necessary that all the cubes be in their places.

We collect the yellow side. Stage OLL

1. Corner

After you have collected the first two layers, the yellow side of the cube may look like this:

But in practice, during the assembly process, other combinations may fall out. Consider how to get out of all these situations using universal formulas.

Our task is to make a corner of the yellow cubes. After assembling the first two layers, you can see completely different combinations of yellow cubes at the top, but most often we get either a corner or nothing. Nothing means that neither a corner nor a cross nor a fish fell out. There are several possible combinations in the images that can be before the corner is assembled.

The corner is very easy to assemble. We execute the formula: F RUR'U' F. After executing the formula, you will get one of the many combinations that are possible with an OLL assembly that contains a corner. Let's move on to the next step.

2. Cross

The cross can be assembled using one formula, but only at the stage of the assembled corner. There can be many combinations based on the corner, but to assemble the cross you need to know only one formula. So, before assembling, you need to take the cube so that the corner vectors look: one at you, the other to the left (in fact, as in the picture above). Next, we execute the formula: RU BU’B’ R’. As a result, you will get one of the combinations based on the cross:

After that, you can proceed to the assembly of the fish.

3. Fish

We need a combination of fish in order to use one formula to collect the entire yellow side. In fact, after assembling the cross, the same formula will help you make a fish, and after a fish, and completely OLL.

The formula that will help to collect the full OLL looks like this: R U R’ U R U2′ R’. Well, now let's look at how to properly hold the cube with the assembled cross to go to the fish.

Having collected the cross, you can get 5 combinations through which you need to go to the “fish” using the formula R U R’ U R U2′ R’. It is very important to keep the cube in exactly the same position as shown in the images, with white as always at the bottom and yellow at the top.

After completing the specified formula for these combinations, you get to the “fish” combination. To collect the completely yellow side, repeat the formula R U R’ U R U2′ R’ (the cube must be held as in the image).