RQ

X-centres
R first
From memo: the letter pair is the case.
Your status
Recognition & spaced review

Algorithms (3)

U 2R' U 2L U' 2R U 2L' U2
My choice
13 HTM · 9 STM · 14 QTM
3-gen
rotationless
<U,R,L>
One hand: needs L, B, S or E
BLDDB, on 2 solvers' sheets
Uw R' 2U' 2R 2U R 2U' 2R' U'
14 HTM · 9 STM · 14 QTM
2-gen
rotationless
oh
<U,R>
One hand: R and U only
Cubemuch
B' 2U' 2B 2U B 2U' 2B' 2U
14 HTM · 8 STM · 14 QTM
2-gen
rotationless
<U,B>
One hand: needs L, B, S or E
Cubemuch

How this case is verified

The case is the source's setup (or, where it has none, another source algorithm reversed). Setup: U 2R 2U R' 2U' 2R' 2U R Uw'. Every algorithm above was run by our logic engine from that state and reaches "solved".