NP
Algorithms (3)
U R' U' 2R U R2 U' 2R' U R' U'
My choice
13 HTM · 11 STM · 14 QTM
2-gen
rotationless
oh
<U,R>
One hand: R and U only
BLDDB, on 8 solvers' sheets
R D' 2R' D R2 D' 2R D R
11 HTM · 9 STM · 12 QTM
2-gen
rotationless
<R,D>
One hand: R, U and M with F or D
BLDDB, on 7 solvers' sheets
z' U R' 2U' R U2 R' 2U R U z
11 HTM · 9 STM · 12 QTM
2-gen
rotation
oh
<U,R>
One hand: R and U only
BLDDB, on 7 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' D' 2R' D R2 D' 2R D R'. Every algorithm above was run by our logic engine from that state and reaches "solved".