OLL · Dot

OLL 1

R
U2
R2
F
R
F'
U2
R'
F
R
F'
How to recognise it
Only the centre is yellow on top, and the left and right sides each show a full yellow bar. Hold the bars left and right.
Algorithms
Relations
Your algorithm backwards
F R' F' R U2 F R' F' R2 U2 R'
solves OLL 2
That's why your scrambles are never the inverse of the algorithm: you'd be practising OLL 2 without knowing it. CubeDojo builds a random state with this case and checks it comes out.
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