OLL · Dot

OLL 19

r'
R
U
R
U
R'
U'
M'
R'
F
R
F'
How to recognise it
A dot with two adjacent corners yellow on top. Hold them at the back: the front corners' yellow faces left and right.
Algorithms
Built from
r' R U + Sexy move + M' + Sledgehammer
Loose moves
r' R U
Trigger
Sexy move
R U R' U'
Loose moves
M'
Trigger
Sledgehammer
R' F R F'
Relations
Your algorithm backwards
F R' F' R M U R U' R' U' R' r
solves OLL 17
That's why your scrambles are never the inverse of the algorithm: you'd be practising OLL 17 without knowing it. CubeDojo builds a random state with this case and checks it comes out.
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