OS

Centres
O first
From memo: the letter pair is the case.
Your status
Recognition & spaced review

Algorithms (3)

2D 2L U' 2L' 2D' 2L U 2L'
My choice
14 HTM · 8 STM · 14 QTM
3-gen
rotationless
<U,D,L>
One hand: needs L, B, S or E
BLDDB, on 8 solvers' sheets
2R B 2R' 2B 2R B' 2R' 2B'
14 HTM · 8 STM · 14 QTM
2-gen
rotationless
<R,B>
One hand: needs L, B, S or E
Cubemuch
2B' L 2D' L' 2B L 2D L'
12 HTM · 8 STM · 12 QTM
3-gen
rotationless
<D,L,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: 2B 2R B 2R' 2B' 2R B' 2R'. Every algorithm above was run by our logic engine from that state and reaches "solved".