UN
Algorithms (4)
F E R2 E' R2 F'
My choice
8 HTM · 6 STM · 10 QTM
3-gen
rotationless
<R,F,E>
One hand: needs L, B, S or E
BLDDB, on 34 solvers' sheets
F' R2 E R2 E' F
8 HTM · 6 STM · 10 QTM
3-gen
rotationless
<R,F,E>
One hand: needs L, B, S or E
BLDDB, on 13 solvers' sheets
r U' R2 S R2 S' U r'
10 HTM · 8 STM · 12 QTM
3-gen
rotationless
<U,R,S>
One hand: needs L, B, S or E
BLDDB, on 11 solvers' sheets
r U S R2 S' R2 U' r'
10 HTM · 8 STM · 12 QTM
3-gen
rotationless
<U,R,S>
One hand: needs L, B, S or E
BLDDB, on 3 solvers' sheets
How this case is verified
The case is the source's setup (or, where it has none, another source algorithm reversed). Setup: F' E R2 E' R2 F. Every algorithm above was run by our logic engine from that state and reaches "solved".