I'm following the tutorial on Ruwix, and either they're making a mistake or I am. When solving the edges they give the image:
Edge pairing algorithm

This is my first attempt at a 5x5 and this step confused me for a long time, as it kept messing up my solved edges. I finally realised that the edge they have marked pink is NOT the one that gets broken, instead it's one further CCW. So instead of the algorithm u' R U R' u I find I need to do Uw' R U R' u (or have the broken edge further around on the TOP face).

Can anyone confirm this move, or hint at my mistake?


1 Answer 1


The move notation with small letters is ambiguous, as different sources use this to mean different things.

Ruwix's Advanced Notation page explains that they use the small letters to denote a turn of the two outer layers. This notation is often used on the 3x3x3 cube as well.

So yes, the site uses u to to mean what you know as Uw. For larger cubes they use $U_2$.

  • $\begingroup$ Oh you are freaking kidding me!! I was following the 4x4 Ruwix page which says Lowercase letters mark inner slice turns. u' = Uw' U. Did not expect the same site to use two different notations :( $\endgroup$
    – Ian
    Sep 9, 2019 at 22:30
  • $\begingroup$ @Ian: Ouch! That's a pretty bad inconsistency. The 5x5x5 page itself should at least have a warning or explanation. $\endgroup$ Sep 10, 2019 at 6:28

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