OLL · Lines

OLL 51

F
U
R
U'
R'
U
R
U'
R'
F'
How to recognise it
Only the left and right edges are yellow on top. Headlights on the right; the left corners' yellow faces front and back.
Algorithms
Built from
F + Sexy move + Sexy move + F'
Loose moves
F
Trigger
Sexy move · backwards
U R U' R'
Trigger
Sexy move · backwards
U R U' R'
Loose moves
F'
Relations
Your algorithm backwards
F R U R' U' R U R' U' F'
solves OLL 48
That's why your scrambles are never the inverse of the algorithm: you'd be practising OLL 48 without knowing it. CubeDojo builds a random state with this case and checks it comes out.
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