DR and DF
Flips
Without UF
Seen during memo: an edge in place with its colours the wrong way round.
Your status
Algorithms (4)
r L E' L' U L E L2 E2 L U' L' E2 x'
My choice
17 HTM · 13 STM · 22 QTM
rotation
<U,R,L,E>
One hand: needs L, B, S or E
BLDDB, on 12 solvers' sheets
S R F' R' S' R F R' S' R' F' R S R' F R
20 HTM · 16 STM · 20 QTM
3-gen
rotationless
<R,F,S>
One hand: needs L, B, S or E
BLDDB, on 5 solvers' sheets
R' F' R S' R' F R S R F' R' S R F R' S'
20 HTM · 16 STM · 20 QTM
3-gen
rotationless
<R,F,S>
One hand: needs L, B, S or E
BLDDB, on 4 solvers' sheets
R' F R S' R' F2 R S R' E R2 E' R2 F R
19 HTM · 15 STM · 22 QTM
rotationless
<R,F,E,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' F' R S' R' F R S R F' R' S R F R' S'. Every algorithm above was run by our logic engine from that state and reaches "solved".