FR and BR
Flips
Without UF
Seen during memo: an edge in place with its colours the wrong way round.
Your status
Algorithms (4)
R2 E R2 E' R S' R' F2 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 14 solvers' sheets
F' R S' R' F R U' M' U2 M U' S R'
17 HTM · 13 STM · 18 QTM
rotationless
<U,R,F,M,S>
One hand: needs L, B, S or E
BLDDB, on 6 solvers' sheets
R U R2 S' R U R' S R2 S2 R' U' R S2 U' R'
20 HTM · 16 STM · 26 QTM
3-gen
rotationless
<U,R,S>
One hand: needs L, B, S or E
BLDDB, on 2 solvers' sheets
R S' U M' U2 M U R' F' R S R' F
17 HTM · 13 STM · 18 QTM
rotationless
<U,R,F,M,S>
One hand: needs L, B, S or E
BLDDB, on 2 solvers' sheets
How this case is verified
The case is the source's setup (or, where it has none, another source algorithm reversed). Setup: R S' U M' U2 M U R' F' R S R' F. Every algorithm above was run by our logic engine from that state and reaches "solved".