This page attempts to list move optimal algorithms for every common form of parity encountered in popular 4x4x4 Rubik's Revenge solving methods. Solutions listed under a case image which are not move optimal in the move metric in which algorithms are sorted by :. The term "parity" can be used to describe a number of situations that occur during a 4x4x4 solve which cannot manifest during a 3x3x3 standard size Rubik's cube solve. In fact, there has been debate about what situations are considered to be a parity case , but there is one situation of which any cuber who uses the term "parity" for the 4x4x4 identifies as parity: the single dedge flip. The most popular 2-cycle a swap of two pieces besides the single dedge flip case is the following. This 2-cycle of wings is as common during a K4 Method solve as the single dedge flip is, but it should never arise during a solve using the Reduction Method because two dedges are not paired up.
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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, 7 months ago. Active 1 month ago. Viewed 60k 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 question , so 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!
Parity on the 4x4 Rubik’s Cube
Parity is something that most puzzle solvers despise. It is something that can slow speedsolvers down immensely in official solves , and is generally seen as a pain to deal with. One type of pseudo-parity is edge parity. It happens when all but two edges are solved. These two edges look the same, but inverted.
How to solve a 4x4 Rubik's Cube
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4x4x4 parity algorithms