F2L 35
The algorithm, how to recognise it and how to practise it without cheating.
Recommended algorithm
U' R U R' U F' U' F8 moves
Alternatives
U2 R U R' U' F' U F8 movesU2 R U R' F R' F' R8 movesU2 R U' R' U' F' U' F8 moves
How to recognise it
Corner above the slot with white facing you; the edge is in the slot but flipped.
Its inverse is another case
Do the 35 algorithm backwards, F' U F U' R U' R' U, and you are solving 31.
That's why CubeDojo never scrambles 35 that way: it builds a random state with the case fixed, so you practise 35 and not 31.
Practise 35 now
Random-state scrambles, a timer and spaced review. Free, on the web and on your phone.