Rubik 39;s Cube Solver 4×4 🖤

July 9, 2023

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How to Solve a Rubik’s Cube 4×4: A Complete Guide

If you are looking for a new challenge in your cubing journey, you might want to try solving a Rubik’s Cube 4×4. This is a larger and more complex version of the classic 3×3 cube, with 56 movable pieces instead of 20. Solving a Rubik’s Cube 4×4 requires more patience, concentration, and memory than solving a 3×3, but it also brings more satisfaction and fun.

In this article, we will show you how to solve a Rubik’s Cube 4×4 in three main steps: solving the centers, pairing the edges, and solving it like a 3×3. We will also explain some of the common terms and concepts that you need to know before you start, such as parity, algorithms, and notation. By following this guide, you will be able to solve any scrambled Rubik’s Cube 4×4 in no time.

But before we dive into the details, let’s see why you should learn how to solve a Rubik’s Cube 4×4 in the first place.

Introduction

What is a Rubik’s Cube 4×4 and why is it challenging to solve?

A Rubik’s Cube 4×4, also known as Rubik’s Revenge or Master Cube, is a twisty puzzle that has four layers of smaller cubes on each face. Unlike a 3×3 cube, which has fixed center pieces that determine the color of each face, a 4×4 cube has no fixed center pieces. This means that you have to figure out the correct position and orientation of each center piece before you can solve the rest of the cube.

A Rubik’s Cube 4×4 has 7.40 x 10^45 possible combinations, which is much more than a 3×3 cube, which has only 43 quintillion combinations. This makes it harder to find the optimal solution for a given scramble. Moreover, a Rubik’s Cube 4×4 can have parity cases, which are situations where one or two pieces are flipped or swapped in an otherwise solved cube. These cases cannot occur on a 3×3 cube, and they require special algorithms to fix them.

What are the benefits of solving a Rubik’s Cube 4×4?

Solving a Rubik’s Cube 4×4 is not only challenging but also rewarding. Here are some of the benefits that you can get from mastering this puzzle:

It improves your mental skills, such as logic, memory, concentration , and problem-solving.
It boosts your confidence and self-esteem, as you can overcome a difficult challenge and impress others with your skills.
It enhances your creativity and imagination, as you can explore different ways to solve the cube and create your own patterns and designs.
It relaxes your mind and reduces stress, as you can focus on the cube and forget about your worries for a while.
It entertains you and makes you happy, as you can have fun with the cube and enjoy the satisfaction of completing it.

What are the main steps to solve a Rubik’s Cube 4×4?

To solve a Rubik’s Cube 4×4, you need to follow three main steps:

Solve the centers: In this step, you need to form six 2×2 squares of the same color on each face of the cube. This will determine the color scheme of the cube and prepare it for the next step.
Pair the edges: In this step, you need to pair up the 24 edge pieces into 12 edge pairs, each consisting of two edge pieces of the same color. This will reduce the cube to a 3×3 cube with larger pieces.
Solve it like a 3×3: In this step, you need to apply the methods that you use to solve a 3×3 cube, such as the beginner’s method or the CFOP method. However, you may encounter some parity cases that require special algorithms to fix them.

Now that you have an overview of the process, let’s see how to do each step in detail.

Step 1: Solve the Centers

How to identify the center pieces and their colors

A Rubik’s Cube 4×4 has 24 center pieces, four on each face of the cube. Unlike a 3×3 cube, where the center pieces are fixed and have only one color, a 4×4 cube has center pieces that can move and have two colors. For example, on a white face, there are four center pieces that are white and green, four that are white and red, four that are white and blue, and four that are white and orange.

To solve the centers, you need to group the center pieces of the same color together to form six 2×2 squares on each face. The color of these squares will determine the color of each face. For example, if you make a white square on one face, that face will be the white face of the cube.

However, you cannot choose any color for any face. You have to follow a standard color scheme that is based on the opposite colors of the cube. The opposite colors are:

White and yellow
Green and blue
Red and orange

This means that if one face is white, the opposite face must be yellow; if one face is green, the opposite face must be blue; and if one face is red, the opposite face must be orange. You can choose any color for the first face, but then you have to follow this scheme for the rest of the faces.

How to use the 3×3 algorithm to solve the centers

To solve the centers, you can use a simple algorithm that is also used to solve a 3×3 cube. An algorithm is a sequence of moves that changes the position or orientation of some pieces on the cube. To perform an algorithm, you need to know the notation of the moves. The notation is based on the six faces of the cube: front (F), back (B), right (R), left (L), up (U), and down (D). A letter by itself means a clockwise turn of 90 degrees of that face; a letter followed by an apostrophe means a counterclockwise turn of 90 degrees; and a letter followed by a 2 means a half turn of 180 degrees.

However, since a 4×4 cube has inner layers as well as outer layers, we need to use some additional notation for these layers. The inner layers are denoted by lowercase letters: f, b, r, l, u, and d. These letters mean turning both the inner layer and the outer layer of that face in the same direction. For example, f means turning both the front and the second layer from the front clockwise; f’ means turning both the front and the second layer from the front counterclockwise; and f2 means turning both the front and the second layer from the front 180 degrees.

If we want to turn only the inner layer of a face, without affecting the outer layer, we need to use a different notation. We use the letter of the face followed by a w, which stands for wide. For example, Rw means turning only the second layer from the right clockwise; Lw’ means turning only the second layer from the left counterclockwise; and Uw2 means turning only the second layer from the top 180 degrees.

Now that we know the notation, we can use the following algorithm to solve the centers:

Choose a color for the first face and find four center pieces of that color. For example, if you choose white, find four white center pieces.
Put one of them on the top face, in any position. For example, if you have a white and green center piece, put it on the U face.
Put another one on the front face, adjacent to the first one. For example, if you have a white and red center piece, put it on the F face, next to the white and green center piece.
Use the algorithm R U R’ U’ to join them together on the top face. You should now have a 1×2 bar of white on the U face.
Repeat steps 2 to 4 for the other two center pieces of the same color, but on the opposite side of the cube. For example, if you have a white and blue center piece and a white and orange center piece, put them on the F and B faces respectively, and use the algorithm R U R’ U’ to join them together on the U face. You should now have two 1×2 bars of white on opposite sides of the U face.
Use the algorithm U2 R2 U2 R2 to join the two bars together into a 2×2 square of white on the U face. You have now solved the first center.
Repeat steps 1 to 6 for the opposite color on the bottom face, following the opposite color scheme. For example, if you have solved the white center on the top face, you need to solve the yellow center on the bottom face.
Repeat steps 1 to 6 for the remaining four colors on the side faces, following the opposite color scheme. For example, if you have solved the white and yellow centers on the top and bottom faces, you need to solve the green and blue centers on the front and back faces, and the red and orange centers on the right and left faces.

After completing these steps, you should have six 2×2 squares of the same color on each face of the cube. You have now solved all the centers.

How to check if the centers are solved correctly

To check if the centers are solved correctly, you need to make sure that the opposite colors are matching on the opposite faces. For example, if the top face is white, the bottom face should be yellow; if the front face is green, the back face should be blue; and if the right face is red, the left face should be orange.

If you find that some of the centers are not matching, it means that you have made a mistake in the previous steps. You need to go back and fix it before you proceed to the next step. To fix it, you can either undo the moves that you have done, or use the same algorithm that you used to solve the centers, but in reverse. For example, if you used R U R’ U’ to join two center pieces together, you can use U R U’ R’ to separate them.

Step 2: Pair the Edges

How to identify the edge pieces and their colors

A Rubik’s Cube 4×4 has 24 edge pieces, four on each face of the cube. Unlike a 3×3 cube, where each edge piece has only two colors, a 4×4 cube has edge pieces that have either two or three colors. For example, on a white face, there are four edge pieces that are white and green, four that are white and red, four that are white and blue, and four that are white, green, and red.

To pair the edges, you need to group the edge pieces of the same color together to form 12 edge pairs, each consisting of two edge pieces of the same color. For example, you need to pair a white and green edge piece with another white and green edge piece, a white and red edge piece with another white and red edge piece, and so on. This will reduce the cube to a 3×3 cube with larger pieces.

How to use the flipping and swapping algorithms to pair the edges

To pair the edges, you can use two simple algorithms that are also used to solve a 3×3 cube. The first algorithm is called flipping, which flips an edge piece on the top layer. The second algorithm is called swapping, which swaps two edge pieces on the top layer. To perform these algorithms, you need to use the same notation that we used in the previous step.

The flipping algorithm is: Rw U2 Rw’ U2 Rw U2 Rw’ U2. This algorithm flips the edge piece that is on the front-right position of the top layer. For example, if you have a white and green edge piece that is facing up, this algorithm will flip it so that it is facing front.

The swapping algorithm is: Rw2 U2 Rw2 U2 Rw2 U2. This algorithm swaps the edge pieces that are on the front-right and back-left positions of the top layer. For example, if you have a white and green edge piece on the front-right and a white and red edge piece on the back-left, this algorithm will swap them so that they are on the opposite positions.

To pair the edges, you need to follow these steps:

Choose an edge pair that you want to solve. For example, if you want to solve the white and green edge pair, find two white and green edge pieces on the cube.
Put one of them on the top layer, in any position. For example, if you have a white and green edge piece on the D face, move it to the U face by using D or D’.
Put the other one on the bottom layer, directly below the first one. For example, if you have another white and green edge piece on the F face, move it to the D face by using F or F’, and then align it with the first one by using D or D’.
Use the flipping algorithm to flip the edge piece on the top layer, so that it matches with the edge piece on the bottom layer. For example, if you have a white and green edge piece that is facing up on the U face, use Rw U2 Rw’ U2 Rw U2 Rw’ U2 to flip it so that it is facing front.
Use the swapping algorithm to swap the edge pair with another edge pair on the top layer, so that they are out of the way. For example, if you have a white and green edge pair that is on the front-right and back-left positions of the U face, use Rw2 U2 Rw2 U2 Rw2 U2 to swap them with another edge pair on the same positions.
Repeat steps 1 to 5 for the remaining 11 edge pairs, until all the edges are paired up. You can choose any order to solve the edge pairs, but it is recommended to start with the white and yellow edge pairs, and then move on to the other colors.

After completing these steps, you should have 12 edge pairs of the same color on each face of the cube. You have now paired all the edges.

How to check if the edges are paired correctly

To check if the edges are paired correctly, you need to make sure that each edge pair matches with the color of the center on each face. For example, if the top face is white, all the edge pairs on that face should have white as one of their colors; if the front face is green, all the edge pairs on that face should have green as one of their colors; and so on.

If you find that some of the edge pairs are not matching, it means that you have made a mistake in the previous steps. You need to go back and fix it before you proceed to the next step. To fix it, you can either undo the moves that you have done, or use the same algorithms that you used to pair the edges, but in reverse. For example, if you used Rw2 U2 Rw2 U2 Rw2 U2 to swap two edge pairs, you can use U2 Rw2 U2 Rw2 U2 Rw2 to swap them back.

Step 3: Solve it Like a 3×3

How to apply the 3×3 methods to solve the corners and edges

At this point, you have reduced your 4×4 cube to a 3×3 cube with larger pieces. This means that you can use any method that you know to solve a 3×3 cube, such as the beginner’s method or the CFOP method. However, you need to treat each center and each edge pair as a single piece, and ignore the inner layers when performing the moves.

For example, if you use the beginner’s method, you need to follow these steps:

Solve the first layer: Place four corner pieces and four edge pieces on one face of the cube, matching them with the center of that face. For example, if you have solved the white center, place four white corner pieces and four white edge pairs on the U face, forming a white cross and four white corners.
Solve the second layer: Place four edge pairs on the middle layer of the cube, matching them with the centers of the adjacent faces. For example, if you have solved the white and yellow centers, place four edge pairs that have white or yellow as one of their colors on the E layer, forming a white and yellow belt around the cube.
Solve the third layer: Place four corner pieces and four edge pieces on the opposite face of the cube, matching them with the center of that face. For example, if you have solved the yellow center, place four yellow corner pieces and four yellow edge pairs on the D face, forming a yellow cross and four yellow corners. You may need to use some algorithms to orient and permute the pieces correctly.

After completing these steps, you should have a solved 3×3 cube with larger pieces. You have now solved your 4×4 cube.

How to deal with parity cases that may occur

However, there is a possibility that you may encounter some parity cases while solving your 4×4 cube as a 3×3 cube. Parity cases are situations where one or two pieces are flipped or swapped in an otherwise solved cube. These cases cannot occur on a 3×3 cube, because a 3×3 cube has an even number of permutations, while a 4×4 cube has an odd number of permutations. This means that some configurations of a 4×4 cube are impossible to achieve by using only 3×3 moves.

There are two main types of parity cases that can occur on a 4×4 cube: OLL parity and PLL parity. OLL parity is when one edge pair is flipped on the last layer, while PLL parity is when two edge pairs are swapped on the last layer. To fix these cases, you need to use some special algorithms that involve the inner layers of the cube.

The algorithm for OLL parity is: Rw2 B2 U2 Lw U2 Rw’ U2 Rw U2 F2 Rw F2 Lw’ B2 Rw2. This algorithm flips the edge pair that is on the front-right position of the top layer. For example, if you have a yellow and green edge pair that is facing up on the U face, use this algorithm to flip it so that it is facing front.

The algorithm for PLL parity is: Rw2 U2 x Rw2 U2 Rw2 U2 Rw’ U2 Lw U2 Rw’ U2 Rw U2 x’ Rw2 U2. This algorithm swaps the edge pairs that are on the front-right and back-left positions of the top layer. For example, if you have a yellow and green edge pair on the front-right and a yellow and red edge pair on the back-left, use this algorithm to swap them so that they are on the opposite positions.

If you encounter any of these parity cases, you need to use the corresponding algorithm to fix them before you can finish solving your 4×4 cube. You may need to adjust the cube slightly before or after applying the algorithm, so that the pieces are aligned correctly.

How to check if the cube is solved correctly

To check if the cube is solved correctly, you need to make sure that each face of the cube has only one color, and that the opposite colors are matching on the opposite faces. For example, if the top face is white, all the pieces on that face should be white, and the bottom face should be yellow; if the front face is green, all the pieces on that face should be green, and the back face should be blue; and so on.

If you find that some of the pieces are not matching, it means that you have made a mistake in the previous steps. You need to go back and fix it before you can celebrate your success. To fix it, you can either undo the moves that you have done, or use the same methods and algorithms that you used to solve the cube, but in reverse.

Conclusion

Congratulations! You have learned how to solve a Rubik’s Cube 4×4 in three main steps: solving the centers, pairing the edges, and solving it like a 3×3. You have also learned some of the common terms and concepts that you need to know when solving a 4×4 cube, such as parity, algorithms, and notation. By following this guide, you have mastered one of the most challenging and rewarding puzzles in the world.

But don’t stop here. There are many ways to improve your solving skills and have more fun with your cube. Here are some tips and tricks that you can try:

Practice regularly and time yourself. You can use a timer app or a website to measure your speed and track your progress. You can also compare your results with other cubers and challenge yourself to beat them.
Learn new methods and algorithms. You can find many online resources and tutorials that teach you different ways to solve a 4×4 cube, such as the Yau method or the Hoya method. You can also learn more advanced algorithms that can help you solve the cube faster and more efficiently, such as the OLL and PLL parity algorithms.
Try different variations and challenges. You can find many different types of 4×4 cubes, such as stickerless, magnetic, or shape-shifting cubes. You can also try to solve the cube blindfolded, with one hand, or with a time limit.

The more you practice and experiment with your cube, the more you will improve your skills and enjoy the puzzle. Solving a Rubik’s Cube 4×4 is not only a hobby, but also a passion and a lifestyle for many people around the world. You can join them and become part of a global community of cubers who share their love and enthusiasm for this amazing puzzle.

FAQs

What is parity and how to fix it?

Parity is a situation where one or two pieces are flipped or swapped in an otherwise solved cube. Parity can occur on a 4×4 cube, but not on a 3×3 cube, because a 4×4 cube has an odd number of permutations, while a 3×3 cube has an even number of permutations. This means that some configurations of a 4×4 cube are impossible to achieve by using only 3×3 moves.

To fix parity, you need to use some special algorithms that involve the inner layers of the cube. There are two main types of parity cases that can occur on a 4×4 cube: OLL parity and PLL parity. OLL parity is when one edge pair is flipped on the last layer, while PLL parity is when two edge pairs are swapped on the last layer. The algorithms for these cases are:

OLL parity: Rw2 B2 U2 Lw U2 Rw’ U2 Rw U2 F2 Rw F2 Lw’ B2 Rw2
PLL parity: Rw2 U2 x Rw2 U2 Rw2 U2 Rw’ U2 Lw U2 Rw’ U2 Rw U2 x’ Rw2 U2

How many moves does it take to solve a Rubik’s Cube 4×4?

The number of moves that it takes to solve a Rubik’s Cube 4×4 depends on the method and the algorithm that you use, as well as the scramble that you start with. However, according to some mathematical calculations, the minimum number of moves that is required to solve any 4×4 cube is 29, while the average number of moves is around 45. This is much more than a 3×3 cube, which has a minimum of 20 moves and an average of 22 moves.

The number of moves that you use to solve a 4×4 cube also affects your solving speed and efficiency. The fewer moves you use, the faster and more efficient you are. To reduce the number of moves that you use, you can learn some tips and tricks, such as:

Look ahead: Try to plan your next moves while executing your current moves, so that you can avoid pauses and transitions.
Finger tricks: Try to use your fingers to turn the layers of the cube, rather than your whole hand or wrist, so that you can increase your turning speed and accuracy.
Optimal algorithms: Try to use the shortest and easiest algorithms for each situation, so that you can save time and effort.

What is the world record for solving a Rubik’s Cube 4×4?

The world record for solving a Rubik’s Cube 4×4 is currently held by Max Park from the United States, who solved it in 17.42 seconds on October 10th, 2021 at CubingUSA Nationals 2021. This record was achieved using a stickerless magnetic 4×4 cube and the Yau method of solving. You can watch the video of his record-breaking solve here. The world record for solving a Rubik’s Cube 4×4 blindfolded is currently held by Kaijun Lin from China, who solved it in 1 minute and 35.43 seconds on November 7th, 2020 at Zhejiang Autumn 2020. This record was achieved using a stickerless magnetic 4×4 cube and the 3-style method of memorization and execution. You can watch the video of his record-breaking solve here. The world record for solving a Rubik’s Cube 4×4 with one hand is currently held by Max Park from the United States, who solved it in 38.47 seconds on October 10th, 2021 at CubingUSA Nationals 2021. This record was achieved using a stickerless magnetic 4×4 cube and the Yau method of solving. You can watch the video of his record-breaking solve here. These records are verified by the World Cube Association (WCA), which is the official organization that governs the competitions and regulations of twisty puzzles. You can find more information about the WCA and the current records on their website.

How can I lubricate and tension my Rubik’s Cube 4×4?

Lubricating and tensioning your Rubik’s Cube 4×4 are two ways to improve the performance and feel of your cube. Lubricating your cube means applying a special substance, such as silicone oil or graphite powder, to the inner parts of your cube, such as the core, the springs, and the pieces. This reduces the friction and resistance between the parts, making your cube smoother and faster to turn. Tensioning your cube means adjusting the screws that hold the center pieces together, making your cube tighter or looser. This affects the stability and flexibility of your cube, making it easier or harder to pop or lock up.

To lubricate your cube, you need to follow these steps:

Take apart your cube by removing one edge piece and then the rest of the pieces.
Clean your cube by wiping off any dust or dirt from the pieces and the core.
Apply a small amount of lubricant to the core, the springs, and the inner surfaces of the pieces. You can use a syringe, a dropper, or a brush to apply the lubricant.
Reassemble your cube by putting back the pieces in their correct positions.
Break in your cube by turning it several times in different directions.

To tension your cube, you need to follow these steps:

Loosen or tighten the screws on each center piece by using a screwdriver. You can use a quarter turn or a half turn as a reference.
Test your cube by turning it in different directions and checking for pops or lock ups.
Repeat steps 1 and 2 until you find the optimal tension for your cube.

You can lubricate and tension your cube as often as you like, depending on your personal preference and the condition of your cube. However, you should be careful not to over-lubricate or over-tension your cube, as this may damage your cube or affect its performance negatively.

Where can I find more resources and tutorials on solving a Rubik’s Cube 4×4?

If you want to learn more about solving a Rubik’s Cube 4×4, you can find many online resources and tutorials that can help you. Here are some of the best ones that we recommend:

Rubik’s Official Website: This is the official website of the Rubik’s brand, where you can find the history, products, and events related to the Rubik’s Cube. You can also find some basic tutorials and tips on solving different types of cubes, including the 4×4 cube.
Ruwix: This is a comprehensive website that covers everything about twisty puzzles, such as the Rubik’s Cube. You can find detailed tutorials, algorithms, calculators, simulators, timers, and more on this website. You can also find some advanced methods and techniques on solving the 4×4 cube, such as the reduction method, the edge pairing method, and the cage method.
CubeSkills: This is a website that offers high-quality video tutorials and courses on solving various types of cubes, such as the 3×3 cube, the 4×4 cube, and the 5×5 cube. You can learn from some of the best cubers in the world, such as Feliks Zemdegs and Jayden McNeill. You can also find some useful tools and resources on this website, such as algorithms, scrambles, quizzes, and forums.

These are just some of the many online resources and tutorials that you can find on solving a Rubik’s Cube 4×4. You can also search for more on YouTube, Reddit, or other platforms. The more you learn and practice, the better you will become at solving this amazing puzzle.

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