F2L 15
The algorithm, how to recognise it and how to practise it without cheating.
Recommended algorithm
F' U F U2 R U R'7 moves
Alternatives
R U' R U2 R2 U' R2 U' R29 moves · R and U onlyU' R' U2 R' U R' U' R U2 R10 moves · R and U onlyU' R2 U2 R U' R' U R' U2 R210 moves · R and U only
How to recognise it
Corner above the slot with white facing you; the edge is beside it in front and their top colours match.
Its inverse is another case
Do the 15 algorithm backwards, R U' R' U2 F' U' F, and you are solving 16.
That's why CubeDojo never scrambles 15 that way: it builds a random state with the case fixed, so you practise 15 and not 16.
Practise 15 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 · 1/3816R 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 · 1/3824F U R U' R' F' R U' R'Connected on top · 1/38