Edges Only
PLL Z Perm
All corners solved, adjacent pairs of edges swapped.
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Algorithm
M' U M2' U M2' U M' U2 M2'
Start hereTwo adjacent pairs swap. Recognisable from any angle by the two bars.
How to recognise it
- →Headlights everywhere, and no edge solved.
- →Unlike H, the swapped edges are neighbours, so you see two bars of matching colour.