F2L 39
Corner and edge in the slot
F2L 39 is a F2L case on the 3x3 (Corner and edge in the slot, hard). Algorithm: R F U R U' R' F' U' R'. Below are 2 variants with a 3D animation and a scramble to practise.
How the status is counted
Training counts the status. A case added to training gets “learning”, and “known” after 5× “correct” in a row with the timer and without hints, when the average time is within the category threshold (Settings). 2× “wrong” in the last 3 attempts or much slower times drop it back to “learning”. Daily tasks don’t change the status.
How to recognize
The corner and the edge are in the slot, but not together or oriented wrong. You have to take them out and insert them again.
Algorithms
Tap a variant to see it in 3D.
- Main variant
Scramble
From a solved cube: yellow on top, green in front.
Generating a scramble…