F2L · Corner in the slot

F2L 28

R
U2
R'
F'
U2
F
How to recognise it
Corner in the slot with white facing right; the edge is at the front of the top layer, its front sticker matching the front centre.
Algorithms
Relations
Mirror
F2L 27
Your algorithm backwards
F' U2 F R U2 R'
solves F2L 27
That's why your scrambles are never the inverse of the algorithm: you'd be practising F2L 27 without knowing it. CubeDojo builds a random state with this case and checks it comes out.
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