It’s fast and efficient, allowing you to solve multiple parts of edges at a time in its most advanced applications. On official WCA competitions they use not only the classic 3x3x3 Rubik's Cube but other cubes like the 2x2x2 Pocket Cube, the 4x4x4 Rubiks Revenge, the 5x5x5 Professor's Cube up to the 7x7x7 cube. Next, construct another bar of the same colour, but make sure that this one has two corner centres and one inner centre. If you know all of the PLL algorithms then noticing PLL parity will be easy for you – if the permutation of the pieces does not match a PLL algorithm that you already know, then you know you have parity.

Activating this checkbox the program will insert separators into the algorithm for a better readability. The first centre can be made by connecting two pieces together (in fact, most of the time there will already be one of these 1x2 “bars” solved on your cube due to the limited amount of possible centre combinations).

The Last 4 Edges stage for the 4x4 is just a combination of slice moves ( Uw and Uw’) and the flipping algorithm. If you’re solving anything larger than a 4x4, however, then the 5x5 edges section may be better suited for this part of the solve.

There are no parities on odd layered cubes due to their defined centres (in the same way a 3x3 doesn’t have parities), so there is nothing different about the 3x3 stage on a 5x5 and a normal 3x3 Rubik’s Cube (other than of course the size). Parity is the name given to an unpredictable outcome as a result of unpredictable/uncontrollable variables. For each step a walkthrough will be provided for the 4x4 and 5x5 cubes, as most even-layered and odd layered puzzles share the same properties (4x4 and 6x6, 5x5 and 7x7 etc. To solve this case, a Uw’ move would push the incorrectly placed orange-blue piece out of the way and match the correct orange-blue piece with the centre edge piece (shown in Figure 6). The second centre will be opposite the first, so the only difference in solving is that you have to undo certain moves to preserve the first centre.Note: The r2 notation refers to the Inner-R layer ONLY (an R move would be the outer R layer, and a Rw would be both the outer and inner layers). If you don’t have any pairs of 2 pieces matching, do a few Uw moves until you notice that two match, flip them to preserve them and undo the Uw moves. If you can solve the 4x4x4 and the 5x5x5 cubes then you can complete any size, even the 22x22x22 cube or the record-breaking 33x33x33! Remember – Because you’re solving an even layered cube, this means that there is no single centre piece.