OLL 37
The algorithm, how to recognise it and how to practise it without cheating.
Probability1/54
Moves8
TypeFish
Inverse and mirror—
Recommended algorithm
F R' F' R U R U' R'8 moves
How to recognise it
A yellow 2×2 square at back left, plus the front-right corner. The back and left sides show no yellow.
Its inverse is another case
Do the 37 algorithm backwards, R U R' U' R' F R F', and you are solving 33.
That's why CubeDojo never scrambles 37 that way: it builds a random state with the case fixed, so you practise 37 and not 33.
Practise 37 now
Random-state scrambles, a timer and spaced review. Free, on the web and on your phone.