F2L 24
The algorithm, how to recognise it and how to practise it without cheating.
Recommended algorithm
F U R U' R' F' R U' R'9 moves
Alternatives
U2 F2 U2 F U F' U F28 movesU' R' F R F' U' F' U' F9 movesF' R' F U' F' U R U F9 moves
How to recognise it
White on top, corner above the slot; the edge is beside it on the right and their right stickers match.
Its inverse is another case
Do the 24 algorithm backwards, R U R' F R U R' U' F', and you are solving 4.
That's why CubeDojo never scrambles 24 that way: it builds a random state with the case fixed, so you practise 24 and not 4.
Practise 24 now
Random-state scrambles, a timer and spaced review. Free, on the web and on your phone.
Other cases: Connected on top
11
U' R U2 R' U F' U' FConnected on top · 1/3812R' U2 R2 U R2 U RConnected on top · 1/3813R U R2 F R F2 U' FConnected on top · 1/3814U' R U' R' U R U R'Connected on top · 1/3815F' U F U2 R U R'Connected on top · 1/3816R U' R' U2 F' U' FConnected on top · 1/3817R U2 R' U' R U R'Connected on top · 1/3818F' U2 F U F' U' FConnected on top · 1/3823U2 R2 U2 R' U' R U' R2Connected on top · 1/38