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Parity for the top cross on a 4x4. Thread starter Mariah94 Start date Mar 8, Mariah94 Member. So I was wondering if you could post the one you use.

Raleigh detour xsOr maybe I have this one written down wrong? Googlrr Member. The double layer turns are normally noted as wide turns, like the first would be 2Rw. GojiraFan13 Member. Joined Jan 3, Messages 12 Location Ohio.

Do you mean when you only have 3 edge pairs on top? I know it's long but it's how I was taught. The double Rr and Ll mean both layers. Good luck. Kian Member.

### How to solve a 4x4 Rubik's Cube

SaSt Not A Moderator. Kian said:. Stefan Member. Mariah94 said:. None of these work, I have no idea what I'm doing wrong. Are you sure you're rotating the cube the right way?The first part of this process, as with the centres, is more about seeing what is happening rather than learning algorithms. If they are on the same layer as displayed on the left you can use either of the two algorithms below to place them on different layers as displayed on the right.

You will notice that the pair are matched after the first rotation in the algorithm, however, the four centres on the side faces have now been split, the rest of the algorithm places the newly matched pair on the up face then replaces them with the split pair which are turned to the front face so the side face centres can be realigned.

You might be lucky when you have finish pairing the third last pair with the final two pairs being matched when the centres are realigned, however, this is less likely than still having to match them.

Kinu m47 ebayThe problem is that we no longer have a third unmatched pair to realign the centres with. So you will need to learn the next algorithm to pair the last two unpaired edge sets. When you still have to solve the last two edge elements you do not have a third set to reset the centres with. The last pair to be solved are placed on ether side of the front face. If they are not use either of the first two algorithms on this page.

Ensure the front face colours match. If not, Right clock, Top anti, Back clock. You now have a 3x3x3 cube, however you may still have parity problems. This algorithm solves the cube for Fig. In each case an incorrectly positioned pair of edges must be at the top of the front face with a correctly positioned pair at the top of right face.

The aim of this section is to take you from this to this completing the edges. Pairing the Edges The first part of this process, as with the centres, is more about seeing what is happening rather than learning algorithms.

You can safely rotate any face to create a starting configuration. Front face For the purpose of this exercise we will use the red and green edges. You need to place a matching colour pair on different layers but on the same face of the cube in the configuration displayed here on the right. Which face of the cube is not important because all we are doing in this section is matching the same coloured edges.

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## Parity for the top cross on a 4x4

New posts. Search forums. Log in. Welcome to the Speedsolving. You are currently viewing our forum as a guest which gives you limited access to join discussions and access our other features. If you are already a member, simply login to hide this message and begin participating in the community! JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Thread starter ballaknight Start date Feb 18, Joined Feb 2, Messages 1.

Kabuthunk Member. The one I use is very similar, but that's the only one I'm aware of. Mine's r2 U2 r2 U2 u2 r2 u2. I found it really easy to remember though in general, since all turns are degrees. You must log in or register to reply here. Thread starter Similar threads Forum Replies Date 4x4x4 edge parity - is there a shorter alg that doesn't preserve corners?

Similar threads 4x4x4 edge parity - is there a shorter alg that doesn't preserve corners? Jan 5, Dec 1, Jun 24, Recognizing 4x4x4 Corner Parity. Jan 7, Dec 29, By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Puzzling Stack Exchange is a question and answer site for those who create, solve, and study puzzles.

It only takes a minute to sign up. Note: since asking this question I've purchased several other twisty puzzles and now regret taking the "look up algorithms online" approach to solving - in the end I get much more enjoyment from the puzzles where I worked out to solve them myself than the ones where I didn't. If you're stuck at this point I would recommend seeking resources to understand the concept of parity and then try to come up with a solution yourself.

You won't end up with a super efficient algorithm, but you will understand it, which is ultimately more satisfying. Or it is for me at least.

That said, answers to this question are still welcome. There are plenty of algorithms for this available online, but different people use different notation and nobody ever says which one they're using, so I risk messing up my cube if I guess wrongly.

If you use anything else at all in your notation, please explain what it means. If you prefer a different notation from the above that's fine, but please explain it.

How to get jsessionid from cookie in javaI'm holding my cube with the unsolved cubies facing me at the top. If I should start in some other orientation, please say so. It would be helpful to have an algorithm that leaves all other pieces alone, as my cube is in exactly the almost-solved state above. Please tell me which I can expect in your answer! The "x" means you rotate the cube clockwise along the x-axis. In other words, if the Red face was facing you, it will move to the top while the sides stay the same color.

I can never remember any clean parity fix for this case, but there is a very easy to remember dirty one, which leaves only about 6 edge pieces out of place. Of course this is no good for speed solving, but it is so simple that I'll never forget it.

Excel vba borderaroundWhat this does is move the u layer, while the R2 moves will swap out the centre pieces from that layer and put them back in a different place. The net effect is that the u layer has been given one quarter turn, but the centre pieces have been restored. This is an odd permutation on the affected edge pieces.

If you start with the flipped pair at the FR location, you then only have to perform a few 3-cycles to fix the last 6 edges. These are notation for rotation of the entire cube. These don't change what to do, they just tell you what moves are triggers, or sets of moves that repeat through many algorithms. Sign up to join this community.

The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Rubik's cube 4x4 parity moves Ask Question.

Asked 1 year, 11 months ago. Active 1 year ago.You have successfully joined my list. If you don't receive the welcome email soon, please let me know. One thing different when solving a 4x4 Rubik's cube is that after you have reduced it to a 3x3, you might get a parity error. This is when a single dedge "double edge" is flipped around the wrong way. This can never happen on a 3x3, but it can on a 4x4. The other parity error is when two edges need swapping, but that algorithm is quite easy.

Just r2 U2 r2 Uu 2 r2 u2, which is easy to memorize.

## 4x4 PLL+parity.pdf

However, this is very long and complicated, and I'll probably never memorize it. I used to keep in on my phone and pull it out whenever I needed it.

But now I have found an algorithm that is much easier to memorize that will solve the parity error. It is this:. That's it. Just turn half the cube one quarter turn, and your cube's dedge parity error is now fixed!

Unfortunately, the cube is now obviously very unsolved, so you have to fix the centers and dedges again. But once that's done, you won't have the parity error anymore.

If only there was a way to detect if your cube has a parity error before you solve it too much. There is. I will attempt to explain it.

Using the following method, you will be able to detect if the 4x4 cube is in a state of parity error or not, long before the end of the solving process. In fact, it works as soon as the middles and edges are solved. So as soon as the 4x4 resembles a 3x3, you can use this method to detect if you have a parity error and thus need to employ the rR move. If you use the rR move at that point in solving the cube, it is a lot easier to recover from it.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Puzzling Stack Exchange is a question and answer site for those who create, solve, and study puzzles. It only takes a minute to sign up. YES, it works. I found it along with many other algorithms by using Cube Explorer for the 3x3x3.

Unlike many 4x4x4 OLL parity algorithms which people have gotten from 3x3x3 solvers, this one was not obvious to translate to the 4x4x4. As you can see, it has some very unusual turns; and it is very unique! See it on my wikipage for more details!

On that page, one can find a 4 move algorithm which needs to be repeated 5 times to fix double parity. But here is my original post about it on Reddit.

For those who want a "pure verson" as George A. Solodun does, I actually derived the above double parity algorithm from an algorithm Floyd Newberry came up with for the "pure" edge flip case. That's fine. Just click the links and observe. Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Simple 4x4x4 OLL parity algs? Ask Question. Asked 2 years, 6 months ago. Active 11 months ago. Viewed 57k times. Does anyone know a simpler alg for it?

Active Oldest Votes. Redline Redline 3 3 bronze badges. Of course, you are probably aware of the DP algorithm that is just a 4 move sequence repeated 5 times that I found two months after you posted this response which I mention in my answer to this topic's questionso maybe you think that's easier than the one you listed. I'm obviously a little late in posting this, but better late than never!

Scott Scott 31 1 1 bronze badge. Christopher Mowla Christopher Mowla 1 1 silver badge 6 6 bronze badges. Liam price Liam price 11 1 1 bronze badge. Solodun Feb 16 '19 at The Overflow Blog. Socializing with co-workers while social distancing.

Featured on Meta.Both puzzles have 8 Corner pieces, however the 4x4 has 24 Center pieces instead of 6, and 24 Edge pieces instead of A letter with an "i" after it means to make an inverted, or counter-clockwise, turn when looking at that face directly. Solving the centers requires you to get aquainted with the color layout. The color layout is found by observing the Corner pieces or by knowing that the Rubik's Cube follows a certain color layout.

To solve the Centers, swap two Center pieces at a time from adjacent faces until all six colors are grouped. After solving one color, remember to follow the color layout above when choosing the next color and face. Follow this sequence to swap the pieces. Continue swapping Center pieces until al 6 faces 24 Center pieces are solved in the correct color layout. Identify an Edge piece that needs to be paired.

Find the other Edge piece with the same two colors. If the Edges are not directly across from each other, follow this sequence to line them up:. The outside layer turns will not scramble the solved Center pieces. The parity fixes are in steps 4 and 7 of this guide. Solve the Middle Layer, treating the two inside layers as one. This is where the first parity may ccur when following the 3x3 Solution Guide.

**How to Solve 4x4x4 Rubik's Revenge Cube: Easiest Best Tutorial only 6 Algorithms in 4K Quality HD**

If there are 1 or 3 Edge pairs on the UP face, then hold the Cube as shown and follow this sequence to fix the parity:. If there are 0, 2, or 4 Edge pairs on the UP face, then continue with the steps outlined in the 3x3 Solution Guide. This is where the second parity may occur. If there are no YELLOW Edge pairs in the correct position, follow the sequence below either once or twice until at least one Edge pair is positioned correctly.

To fix the parity and solve the Cube, determine which two Edge pairs need to be swapped and follow the corresponding sequence. Use the diagrams above and below to get to know each Face and Layer of your cube. If there is a "2" in front of the letter, then make that turn twice:.

Step 3 Follow this sequence to swap the pieces. Step 4 Continue swapping Center pieces until al 6 faces 24 Center pieces are solved in the correct color layout. Congratulations If your Cube looks like this, you have solved the Centers! Step 1 Identify an Edge piece that needs to be paired. Step 2 Find the other Edge piece with the same two colors.

Step 3 If the Edges are not directly across from each other, follow this sequence to line them up:.

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