FR and FL
Flips
Without UF
Seen during memo: an edge in place with its colours the wrong way round.
Your status
Algorithms (3)
R S R' F2 R2 E R2 E' R S' R' F2
My choice
16 HTM · 12 STM · 20 QTM
rotationless
<R,F,E,S>
One hand: needs L, B, S or E
BLDDB, on 11 solvers' sheets
R S R' E R2 E' R2 F2 R S' R' F2
16 HTM · 12 STM · 20 QTM
rotationless
<R,F,E,S>
One hand: needs L, B, S or E
BLDDB, on 7 solvers' sheets
R' F2 R2 S' R' U2 R S R2 S2 R U2 R' f2 R
18 HTM · 15 STM · 26 QTM
rotationless
<U,R,F,S>
One hand: needs L, B, S or E
BLDDB, on 1 solver's sheet
How this case is verified
The case is the source's setup (or, where it has none, another source algorithm reversed). Setup: F2 R S R' F2 R2 E R2 E' R S' R'. Every algorithm above was run by our logic engine from that state and reaches "solved".