Front view
The target corner has its U/D sticker facing upward while the matching edge is separated in the top layer. Check that the target slot is empty before pairing.
Pair then insert · Separated pair, white up
F2L Case 2: recognition, algorithms and execution trainer
The corner and edge are separated in the top layer. The algorithm pairs them with controlled R U moves and continues into a right-slot insertion.
BeginnerLearning order #2Interactive 3D
Primary algorithm
R U2 R' U' R U R'Time an execution ↓Interactive demonstration
Inspect and play the case from four angles
Change the viewpoint without changing the case. Then play the selected algorithm turn by turn.
Viewing angle
Algorithm
Recognition
Recognize F2L Case 2 from several angles
Right view
Use the side-center colors to confirm the edge belongs with the corner. From this view, the first R move should lift or align the corner without breaking solved slots.
Back view
Track whether the pair can be solved into a back slot directly. The same orientation logic applies even when the preferred front picture is hidden.
Left view
Mirror the orientation and use the L algorithm when the target slot is left. Avoid rotating merely to recover the right-hand picture.
Algorithms
Primary and alternatives
Primary
R U2 R' U' R U R'Recommended starting point for reliable recognition and execution.
Left-slot mirror
L' U2 L U L' U' LMirror for the front-left target slot.
Split pairing approach
U R U2 R' U R U' R'An angle-dependent alternative when the pieces begin one U adjustment away from the primary setup.
Setup moves
Build the exact case
R U' R' U R U2 R'Apply the inverse setup to a solved front-right slot. Rotate the U face between attempts and practice finding the same relationship from every angle.
Finger tricks
Execute as one controlled phrase
- Set a stable right-hand grip before the opening R; do not regrip during U2.
- Use a two-finger U2 so the right hand is ready for R prime immediately.
- Execute U' R U R' as a connected pairing-and-insert finish.
- Shift vision to unsolved top-layer pieces before the final R prime completes.
Common mistakes
What usually breaks the case
- Pairing the corner with an edge that shares one color but not both target centers.
- Using one-finger U2 with a large reset pause before R prime.
- Destroying a solved slot because the target orientation was not checked first.
- Memorizing the front picture without understanding the left and back mirrors.
Execution-time trainer
Time repeatable executions, not one lucky run
Apply the setup, press the timer button or Space to start, then press again when the algorithm is complete. Times are stored locally; signed-in attempts also contribute privately to aggregate statistics.
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Short demonstration video
F2L Case 2 in one quick visual pass
Use the clip for a compact overview, then return to the interactive 3D player to control angle and playback.
Difficulty and order
Beginner · recommended case #2
This case teaches how a setup sequence creates a pair and flows directly into insertion. It is a bridge from intuitive principles to standard-case efficiency.
#2recommended order
Quick answers
Frequently asked questions
Why start with R U2 R prime?
It changes the corner-edge relationship in the top layer while preserving the target slot for the final insert.
Should I use the mirror on the left?
Yes. Mirrored inserts reduce rotations and build flexible slot access.
Is this an algorithm or intuitive F2L?
It can be understood through intuitive pairing and also practiced as a standard efficient case.
Put recognition under pressure
Mix this case into a real training session.
Use SupaKewber's algorithm trainers and smart-cube solve analysis to see whether isolated execution transfers into full solves.
Open the trainer