F2L 38
The algorithm, how to recognise it and how to practise it without cheating.
Recommended algorithm
R2 U2 R' U' R U' R' U2 R'9 moves · R and U only
Alternatives
R U2 R U2 F R F' U2 R29 movesF2 U2 R' F R U2 F U2 F9 movesF' U2 F' U' F U' F' U2 F29 moves
How to recognise it
Both pieces are in the slot: the edge is solved, but the corner is twisted with white facing you.
Its inverse is another case
Do the 38 algorithm backwards, R U2 R U R' U R U2 R2, and you are solving 39.
That's why CubeDojo never scrambles 38 that way: it builds a random state with the case fixed, so you practise 38 and not 39.
Practise 38 now
Random-state scrambles, a timer and spaced review. Free, on the web and on your phone.