How to solve a Rubik's cube
The Rubik's Cube is a famous puzzle toy designed and patented by Hungarian architect Ernő Rubik in 1974-1975. A few years after the start of mass production, in the 80s, the toy created a real “boom”, becoming the leader in terms of sales throughout the world.
The puzzle is still popular today. And although it can often be found on sale among children's products, calling this three-dimensional puzzle a toy would not be entirely correct.
Today, speed cube solving competitions are held all over the world. People of all ages take part, and nominations are divided by discipline (by the number of facets).
The current speed record for a classic 3x3x3 cube is less than 5 seconds! Impressive, isn't it? Especially when you consider that the average time to assemble a cube for an untrained person can take from several hours to several years.
To ensure that assembling the cube brings you only pleasure, and subsequently takes no more than 20 minutes, we suggest that you read the instructions, which will describe in detail the most common assembly algorithm. After this, you will not wonder: how to collect all the faces of a Rubik's cube?
First look
Before solving a Rubik's cube, you need to familiarize yourself with the basic elements that it consists of. This will not only help you better understand the principles by which it functions, but also understand the terminology so that in the future you can use formulas for quickly moving faces and cubes.
Let us remind you that this article will focus on standard or classic version 3D puzzle, 3x3x3 cube. In total, this design has 20 movable elements, conveniently located on the frame (i.e., a fixed base). Namely - 12 edges and 8 corners. The core or middle, central cube of a face (plane) is not considered a movable element. Already knowing only this fact, you can build a strategy for the first stages of assembly. After reading the article, you will not wonder how to solve a Rubik's cube correctly?
The ribs are not considered moving elements either, because... You won't be able to move them independently either.
The classic version of the 3x3x3 cube consists of 6 primary colors: white, yellow, blue, green, red and orange. But today, of course, you can find other options. Including edges that, after successful assembly, will form a whole picture (like a puzzle).
Essential elements
- There are 6 central elements of the cube or “core”, one for each side. They never participate in movement, so they are always in their place. If you don’t know how to solve a Rubik’s cube correctly, then we give you a hint: you need to start with the central elements, the cores. That is, the remaining elements of the puzzle must be built around correctly located cores. The colors of the central elements fully match the colors of the sides.
- Corner elements are cubes located in the corners. In total, the classic puzzle model (3x3x3) has 8 cubes, each of which has 3 different colored sides, depending on which side it is adjacent to. For example, a cube at the junction of a white, green and red edge will consist of exactly these colors. Therefore, it is important to take this information into account during assembly. That is, make sure that each color of the corner element corresponds to the desired side - the central element (core).
- Edges - cubes that are located between the corner elements and consist of two different colors(depending on which edge they are adjacent to). In total, there are 12 of them in the 3x3x3 model. Therefore, during assembly, it is important to ensure that each side of the edge matches the color of the central cube (core).
- Side (layer) - the plane of a 3x3x3 cube, consisting of 9 cubes of the same color. In total, the classic cube has 6 sides of different colors.
The cube is assembled precisely by turning the sides. At the same time, we clearly see that by moving, for example, one side clockwise, the corner elements of the cube remain corners, and the edges remain edges. It is this information that gives us reason to believe that each element described above belongs to a specific type, which always remains unchanged. Having turned the puzzle in your hands a couple of times, you can start thinking about how to solve a Rubik's cube using the knowledge you just gained about its basic elements?
Alternately assembling the cube
There are a huge number of different combinations and secrets for quickly assembling the cube. Most of them are suitable for professionals. For those who are just getting acquainted with the puzzle, we recommend starting with the most common method of alternate assembly.
With its help, the first (top layer) is assembled first, then the middle is built, and only then the bottom side. This method will help you better understand the principles of assembling the cube, it is easy to remember, and some of the formulas (especially for assembling the last, bottom side) can be used independently and subsequently solve the puzzle almost independently.
Rubik's cube: how to solve the first layer?
The first thing you need to do is select the side from which the assembly process will begin. Further in the article, all subsequent steps, formulas and tips will be described taking into account the chosen side. In our case, yellow, respectively, the lower, opposite layer for yellow will be white (this order is found in almost all models of the classic cube).
You are free to choose any other color, but to avoid confusion with the wording, we recommend doing everything strictly according to the instructions. Otherwise on last stages assembly, you will simply get confused with the colors.
Rubik's cube how to solve the cross?
So, the color from which the assembly will begin is chosen - yellow. Therefore, we begin to assemble the “cross”. To do this, find the yellow side of the disassembled cube, that is, the layer that will have the yellow color of the central element of the Rubik's cube. How to assemble it quickly:
There is no specific algorithm for assembling a cross. Therefore, it is best to try to do it yourself. It's not as difficult as it seems. If you are not able to assemble the cross yourself, then the next steps may seem too difficult for you.
If you fail to assemble the cross the first time, then leave the puzzle alone for several hours or even days, and then try to assemble the cross with renewed vigor. Please note that you will have to assemble the cross 4 times, that is, for each side of the cube.
Rubik's cube how to solve the corners?
As soon as the cross is assembled, the following elements must be returned to their places - the corners. If you were able to cope with the previous task without difficulty, then solving this one will not seem difficult. When assembling the corner pieces, it is important to remember that it is not enough to simply put the yellow corner in place of the yellow one. It is necessary that each of the three colors of the selected corner matches the color of the core. In other words, the yellow side of a corner cube should be on the yellow side, the blue side on the blue side, and the green side on the green side. The algorithm will be as follows:
- Take the cube so that the cross you just completed is at the top (looking at you).
- Find the angle you need on the bottom layer of the cube. Wherein Special attention Pay attention to what color the other two faces of the selected cube are.
- Scroll the bottom side (in our case, the white side, since it is the opposite side of the yellow side) so that the selected corner is exactly under the place where it needs to be placed. That is, in parallel.
The yellow cube “looks” to the left.
- Turn the bottom side to the left (clockwise).
- Turn side edge, on which you are supposed to put the angle “on yourself”, that is, lower it down.
- Return the bottom edge to its place (the one we rotated in step 1), that is, turn it to the right.
- Return the side edge from step 2 to its place up.
- After the completed actions, the yellow cube from the “looking left” position will return to its rightful place.
By analogy with this method, return the cube from the “looking to the right” position.
If the desired angle is located below, that is, on the underside of the cube, then it will be necessary to first lift it and then return it from the “looking to the right” position.
Attention! If you can't find the yellow corner at the bottom, then it is at the top, just in the wrong place. In order to return it to its rightful place, you simply need to move it down and then return it from the "looking left" or "looking right" position according to the formulas.
The described steps for returning the corners must be repeated until the first layer is completely assembled.
Assembling the middle layer or letter T
As soon as the top layer is completely assembled, that is, all the corners and edges are in place, you can begin assembling the middle layer. The first thing to do is to return the cubes to their places so that they form the letter T. To do this:
- Turn the cube over so that the main color you have chosen (and already completely assembled) (in our case, yellow) is at the bottom.
- In the top layer (in our case with a white core), find the edge on which there are no cubes with white color (on all sides!).
- Rotate the top layer until the edges of this cube and the core meet and form the coveted letter T.
- As soon as you collect the first inverted T, you can move on to the next stage. Namely, moving the selected cube to its “place”. Therefore, the algorithm will differ depending on the initial position of the edge.
From its original position, the cube must be moved to the right
From its original position, the cube must be moved to the left
Attention! If you cannot find the cube you need (in our case, the one without white), it means that it is on the middle edge, but not in its place. Move it to the top layer and then return it to the T position.
Remember that you will have to repeat this step 4 times. That is, first make the letter T, and then return the edges to their places for each layer. After this, the first two layers will be assembled and you can move on to the next stage, which will help you understand how to quickly solve the cube to the bitter end.
Second cross
Before you solve the 3rd layer of the Rubik's cube completely, the first thing you need to do is solve the cross. By analogy with the initial step. But this is all complicated by the fact that this must be done in such a way as not to disturb or confuse the two just assembled layers.
The first thing you need to do is move all four edges of the cube that have White color on top part. It is also possible that the ribs will already be in their places. In this case, you can safely skip this stage and move on to the next one. For other cases in which it is still necessary to return the white edges to the top, we recommend using the following algorithms. They differ depending on exactly what position they are in.
If they are nearby:
If they are opposite each other
Attention! If not a single cube with white color is positioned correctly (this situation is not excluded), that is, they are not on the top side, then do not be alarmed. You just need to do any of the algorithms described above. After this, the white cubes will move to Right place. As soon as this happens, depending on the situation, repeat one of the algorithms described above.
Combining the ribs
Once the cross is assembled, it is necessary to correctly align each edge with the central cube of each individual side according to color, that is, with the core. This must be done sequentially, without paying attention to other elements, including corners. Even if they are positioned correctly now, do not be afraid that after this stage they will fall out of place.
To start:
- Take the cube with the cross you just assembled up and rotate this layer until at least two edges match the color of the other two sides, or rather their cores.
- Depending on which of the situations proposed below you can fit the edges into, use the algorithms described below.
If the side edges are located next to each other:
It is also possible that the side edges will be located opposite each other.
The final stage
After the described actions have been completed and the ribs are in place, the only thing left is to return the corners to their places. To do this, depending on each specific situation, you can use absolutely different methods and formulas.
We will use a universal algorithm that allows you to swap angles depending on the selected position. In this case, the remaining elements of the cube will remain untouched.
If you did everything exactly according to our instructions, then congratulations! You've just solved a Rubik's cube! You can also use the algorithms described above to come up with your own universal formulas that will help you quickly move cube elements from one position to another or assemble a cross.
Once upon a time, inventor Erno Rubik solved his cube in a month, and the modern record is a few seconds.
Many years have passed, but interest in the Rubik's cube is increasing.
There is even a competition to solve a Rubik's cube blind! On many sites, enthusiasts discuss which cube solving patterns are easier to remember, which rules are easier to follow, which algorithms are faster, and which fingers to hold on to. Even if you are not going to participate in competitions yet, but just want to learn, or even just find out how to solve a Rubik's cube - general principles solutions to this puzzle. Beginners do not need to learn detailed algorithms and diagrams. Remember 2 or 3 formulas and practice to better understand the knowledge. I will try to explain the simplest way that I managed to find, having studied a lot of unnecessary things at the same time :). Full instructions
There are different assembly strategies, and there are probably other simple rules. We won't even consider the options. This is a topic for self-study.
If you hold the cube straight, with one face (side) facing you, then its faces are denoted by the words: F ront (the edge closest to you), IN erh, L evo, P right.
The instructions for assembling the cube consist of formulas. The part of the assembly algorithm that performs part of the task is written in the form of a formula. Correct Formula swaps or rotates some cubes without disturbing the position of the others. The formula is a sequence of the first letters of the words indicating the sides of the cube: F, V, L, P. On this page, the F side is indicated in red. Letters may have strokes.
IN
The letter B without a prime indicates a clockwise rotation of the top edge by 90 degrees.
IN"
The letter B with a stroke indicates a counterclockwise rotation of the top edge by 90 degrees.
IN""
The letter B with two strokes indicates a rotation of the top edge by 180 degrees.
Formula 1. VP" V" "P VP" VP
To remember:
VP VP VP VP, first and third times P", second time B""
(2 furthest dice of the top cross are swapped)
Formula 2. P"VLV" PVL"V"
To remember:
PVLV PVLV, first strokes along the edges, then on the second pair
(The 3 closest corner cubes of the top face move cyclically)
Formula 3. FP "P FP" the required number of times
To remember:
Forward - forward - back - back
(The near corner cube rotates without changing its place)
You need to remember the formulas. The rest of the rules need to be understood. In my experience, with my poor memory, I never forgot the “back and forth” formula, in the PVLV formula I forgot where the strokes were, and in the VP formula I forgot the order of the letters B and P. As a result, I learned the most difficult PVLV formula and remembered that the letters VP are in a different order than in the word PVLV.
You've probably noticed that the center cubes always stay in place. Therefore, to assemble one face, you need to assemble a “cross” and corner cubes of the same color as the center.
Pair of corner cubes
Assembly order
(1) Lower cross.
(2) 2 bottom layers. We take turns collecting 4 pairs of corner cubes.
(3) Top cross according to center color
(4) Formula 1 for upper cross correction
(5) Formula 2 for the correct placement of the corner cubes of the upper face
(6) Formula 3 for turning a corner cube. Turn the top edge of the other irregular corner cube towards you. Do Formula 3 again. Etc. until the entire top edge is correct.
(1)
Lower cross
(2)
2 bottom layers
(3)
The upper cross is assembled
(4)
Upper cross corrected
(5)
Corner cubes assembled
(6)
Corner cubes fixed
It is convenient to collect the necessary cubes in the top layer, ensuring the safety of the already collected two lower layers:
(1) Rotation, for example P. In this case, a pair of cubes from one corner rises to the top layer
(2) Rotate the top face B or B" or B""
(3) Reverse rotation (R")
After this, the lower cross and one of the lower corners are completely restored. The pair of cubes that you raised to the top should either not yet be solved (then it’s not a pity), or should remain an inseparable pair during further manipulations until you return them to their place after achieving the next goal.
I wish you success! After a few hours of study, you will be able to solve a Rubik's cube in a couple of minutes.
- that's half the battle. Now it needs to be assembled. And here this most detailed video instruction will help you.ANOTHER INSTRUCTION FOR ASSEMBLY A RUBIK'S CUBE FOR BEGINNERS?
The internet is full right now a huge amount instructions on the topic "how to solve a 3x3 Rubik's cube". The methods for solving a Rubik's cube for beginners, taught by numerous instructors, are practically no different.Except for one thing, the most important thing - simplicity and accessibility of explanation. This is what determines how quickly you or your child will solve your first Rubik's cube.
EVEN A FIRST GRADER WILL COLLECT. THE BEST INSTRUCTION FOR TEACHING CHILDREN.
Simplest method of teaching how to solve a 3x3 Rubik's cube developed by the hero of the show “Ukraine’s Got Talent” Maxim Chechnev. Maxim, while working in children's camps, taught many children how to solve a 3x3 cube. And based on his experience, he developed the simplest teaching method, understandable and accessible to children even of primary school age.
The learning process is divided into 9 lessons with tasks. Don't be intimidated by the number of lessons - all of them can be completed within a few hours. But in the end, you will not only solve your first Rubik's cube, but you are also guaranteed to remember the assembly steps and will definitely solve the Rubik's cube the second time without any hints, on your own.
How to solve a Rubik's cube video from Maxim Chechnev.
Stage 1. Basics of the structure of the cube.
Stage 2. Putting a cross on one of the sides + theory about the elements of a 3x3 Rubik's cube.
After you have assembled the cross, before watching video 3, you MUST disassemble and reassemble it several times. Reinforce the steps and Rubik's cube formulas immediately, so as not to forget in an hour!
Stage 3. Put the elements of the cross in place.
Stage 4. Assemble one side completely.
Stage 5A. We assemble the second layer (second floor) of the Rubik's cube + securing the material.
IMPORTANT! After completing step 5A, disassemble your cube - and be sure to secure the previous 4 steps of solving the Rubik's Cube on the orange side (solve the cross and then the entire orange side).
Stage 5B. We collect the second layer (second floor) of the Rubik's cube + additional possible situations.
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. Today this toy is considered the best-selling toy all over the world.
But success came to this puzzle only when the German entrepreneur Tibor Lakzi drew attention to it. He, together with 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 high-speed assembly of Rubik's cubes appeared.
By the way, people who are engaged in assembling this puzzle are called speedcubers (“speed” - speed). It’s not difficult to guess that the high-speed assembly of a “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 solving the cube online. Yes, and in our article we will call all the action with this puzzle, according to established expressions.
A standard Rubik's cube has three sides. Each of which consists of three parts. Today there are also 5x5x5 cubes. The classic cube has 12 edges and 8 corners. It comes in 6 colors. Inside this puzzle there is a cross, around which the sides move.
At the end of the cross there is a rigid square with one of six colors. Around it you need to collect the remaining 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 opposite red, and green is opposite blue. And if you take a puzzle apart and then put it back together incorrectly, it may never be able to be put back together.
In addition to the centers of the cube, the corners are the constant components of this puzzle. Each of the eight corners consists 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 solved by placing the corner and middle sectors to match the colors of the central sectors.
Now that we understand the construction of this puzzle, it’s time to move on to the names of sides and rotations and their designation in specialized literature.
In the process of solving 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 interceptions. This is shown schematically like this:
IMPORTANT: If in the cube assembly algorithm you found, only a letter is indicated, then change the position of the side clockwise. If there is an apostrophe “’” after the letter, then rotate the side counterclockwise. If the number “2” is indicated after the letter, this means that the side needs to be rotated twice. For example, D2′ - rotate the bottom side counterclockwise twice.
Simple and easy assembly method: Instructions for children 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 the color of the edges and centers will be the same.
- To do this, find the white center and white edges and collect the crosses according to the diagram shown below:
- After the steps described above, we should receive a cross. Of course, the cross will not be correct the first time and you need to slightly transform the resulting version. If done correctly, it will be enough to simply swap the ribs with each other.
- 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 place the red corner above it. This can be done 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 assemble the second layer. To do this, we find four edges without yellow color and place them between the centers of the second layer. Then we spin the cube until the color of the center matches the color of the edge element.
- As with the previous layer, to achieve this goal you may need one of several options:
- After we have successfully completed the previous step, we move on to assembling the yellow cross. Sometimes he “gets together” 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. Next step solving this puzzle comes down to seven options. Each of them is shown below:
In the next step we need to assemble the corners of the top layer. Take one of the corners and move it into place using the U, U' and U2 movements. This needs to be taken into account. So that the corner colors are identical to the colors on the lower layers. When using this step, keep the white cube facing you.
Next build step - The final stage of assembling the cube is assembling the edges of the top layer. If you did everything described above correctly, then four situations may arise. They are solved very simply:
The fastest way. Jessica Friedrich Method
This puzzle assembly method was developed by Jessica Friedrich in 1981. It is conceptually no different from most known methods. But it focuses specifically on assembly speed. Thanks 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 speed of solving the cube becomes less than 2 minutes.
1. At the first stage you need to assemble a cross with side edges. In the specialized literature this stage is called "Cross"(from the English Cross - cross).
2. At the second stage, you need to assemble two layers of the puzzle at once. He is called "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 assemble the top layer completely. Pay attention to sides not worth it. 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 assembling the cube. PLL (from the English Permutation of the Last Layer - arranging the elements of the last layer in their places). Its assembly can be done using the following algorithms:
Scheme for solving a 3x3 Rubik's cube in 15 moves
Since 1982, when competitions for high-speed solving of the Rubik's cube appeared, many fans of this puzzle began to develop algorithms that will help correctly arrange the sectors of the cube with a minimum of moves. Today, the minimum number of moves in this puzzle is called "God 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-move algorithm for assembling this puzzle was developed. But it cannot be used from all positions of the cube, which is why it was rejected as the fastest.
In 2010, scientists from Google created a program with which they calculated the fastest algorithm for solving a Rubik's cube. He confirmed that minimal amount steps - 20. Later, from parts of a popular construction set, the Lego Mindstorm EV3 robot was created, which is capable of solving a Rubik's cube from any position in 3.253 seconds. He uses 20 stepper in his “work” "God's Algorithm". And if someone tells you that there is a 15-step diagram for assembling a cube, do not believe him. Even Google is not powerful enough to find it.
How to easily solve a Rubik's cube: Video
Date of: 2012-11-20 Editor: Zagumenny Vladislav
Stage 1. Getting to know the Rubik's cube.
Names of Rubik's cube parts:
Rib parts or ribs– parts with two colors. The cube has a total of 12 rib parts, located in the middle of the ribs.
Corner parts or angles- These are parts with three colors. The cube has a total of 8 corner pieces located in the corners.
Central parts or simply centers– parts with one color. The cube has a total of 6 central parts, located in the center of each face. The central parts do not move and represent the colors of their edges.
Centers, always opposite friend to a friend:
White is the opposite of yellow.
- Orange is the opposite of red.
- Green is the opposite of blue.
Each side of the cube is designated by a Latin letter
R- right side - Right side cube
L– left side – left-hand side cube
U– top face – the top side of the cube
D– bottom face – the bottom side of the cube
F– front face – the front side of the cube
B– back face – the back side of the cube.
Comment: the letter “i” after the letter of the face means reverse or counterclockwise movement when looking directly at the face.
Very important
When performing the movements presented below, keep the cube completely turned with one side facing you, as shown in the figure. Dark grey colour in the pictures means that true color these parts don't matter. Every movement is one fourth of a full turn 360 degrees.
Stage 2. Collecting white cross.
Task: Holding your die with the white center on the top face (U), you should form a white cross as shown in the picture below. Most of this stage is achieved through trial and error, but there are still a few tips.
Tips:
Be sure to remember that you need to collect parts of the white cross in the following order - blue, orange, green, red.
Notice that the ribs in the picture above are combined with a top white center and a side red or blue center. This way you can easily determine that the ribs are in the right places.
Keeping the white center position on the top face, move the white and blue edge to the bottom face (D). Next, rotate the bottom edge until the white and blue edge is directly under the blue center. Now take the cube so that the blue center and the white-blue edge are on the right side (R).
Rotate the right side (R), 
until the white-blue edge is on the top (U) face above the blue center.
If your cube looks like the one below, then take the cube so that the orange center is on the right side and solve the side with the orange center in the same way.
If your die looks like the picture below, then follow the sequence below, making sure the blue center is on the right (R) face.
The remaining parts of the white cross are assembled in the same way.
Congratulations!
If your die has a white cross the same as in the picture, then you can move on to stage 3!
Stage 3. Collecting white corners.
Task: take the cube so that the white cross is on the top face (U). Now you must collect the white corners and get a cube as in the picture below.
Tips:
The corners will have one white edge and 2 edges of other colors.
If the corner is already on the bottom edge, then rotate the bottom edge until the corner is directly below where it should be. After this, your cube may look like one of the 3 pictures below.
Repeat the entire process for all four corners.
If the corner is located on the top face, then move it to the bottom face by following the sequence:
Now rotate the bottom edge until the corner is directly below where it belongs on the top edge.
Congratulations!
If your white layer looks like the image below, then you have collected one third of the cube and can move on to stage 4.
Stage 4. Assembling the middle layer.
Task: Take the cube so that the completely assembled white layer is on the bottom edge. Now you need to assemble the middle layer, placing it in its place side ribs.
Tips:
Pay attention to the vertical blue stripe (it can also be red, orange, green) - this is critically important.
Assemble such a vertical strip by rotating the top edge until the color of the edge on the top edge without yellow matches the color of the center of the edge. The color of the upper part of the edge on the top face determines the direction of movement of the edge, that is, in which direction this part should move.
1) If you move the edge in the same direction as in the picture, then follow the sequence of pictures below.
2) If you move the edge in the same direction as in the picture, then follow the sequence of pictures below.
Repeat these steps until all the side ribs are in place.
Comment: if one of the edges is already in place, but not correctly oriented, do one of the sequences presented above, and it will end up in the top layer. After this, follow the appropriate sequence to place the rib back into its place in the middle layer.
Congratulations!
If the bottom two layers on your cube look like the picture below, you can start stage 5. You're two-thirds of the way through!
Stage 5. Assembling the top layer. We get a yellow cross.
Task: Compare the state of the yellow side of your cube with the templates presented below. Next, follow the appropriate sequence.
Clue: The yellow parts on the top edge should not yet match the color of the side edges.
Step one: Let's collect the yellow cross.
Switch to step two and start collecting the corners of the yellow edge.
Follow these steps:
Option 3.
Option 4.
Step two: Make all the corners of the top edge yellow.
Take a look at the top face and compare the state of the cube with the options presented below.
If there are no yellow corners on the top yellow side, then you must take the cube so that the yellow side of one of the corners is on the left side of the cube. See picture.
If there is one corner on the yellow edge, follow the sequence below.
Option 3. If there is not a single yellow corner on the top yellow face, and there is also not a single corner that could be used in option 1(that is, all corners have edges on the right). Then take the cube as shown in the figure below. The yellow part of the corner should be on the front edge of the cube.
Follow the sequence below 1, 2 or 3 times to get a fully assembled yellow face. After each completion of the sequence, re-compare the state of your cube with the options described above.
Congratulations!
If your cube looks like the picture, you can move on to stage 6!
Stage 6. Place the yellow corners in their places.