FR and BL
Flips
Without UF
Seen during memo: an edge in place with its colours the wrong way round.
Your status
Algorithms (4)
R2 E' R2 F2 R S' R' F2 R S R' E
My choice
16 HTM · 12 STM · 20 QTM
rotationless
<R,F,E,S>
One hand: needs L, B, S or E
BLDDB, on 18 solvers' sheets
R u R' U' R E R2 E2 R U R' E2 R2 U' R'
18 HTM · 15 STM · 24 QTM
3-gen
rotationless
<U,R,E>
One hand: needs L, B, S or E
BLDDB, on 3 solvers' sheets
E' L2 E L2 F2 L' S L F2 L' S' L
16 HTM · 12 STM · 20 QTM
rotationless
<F,L,E,S>
One hand: needs L, B, S or E
BLDDB, on 3 solvers' sheets
E' R S' R' F2 R S R' F2 R2 E R2
16 HTM · 12 STM · 20 QTM
rotationless
<R,F,E,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: R U R2 E2 R U' R' E2 R2 E' R' U R u' R'. Every algorithm above was run by our logic engine from that state and reaches "solved".