QS

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

Algorithms (3)

2U' 2B 2U B2 2U' 2B' 2U B2
My choice
14 HTM · 8 STM · 16 QTM
2-gen
rotationless
<U,B>
One hand: needs L, B, S or E
Cubemuch
B2 2D' 2B' 2D B2 2D' 2B 2D
14 HTM · 8 STM · 16 QTM
2-gen
rotationless
<D,B>
One hand: needs L, B, S or E
Cubemuch
Rw' U' 2R U' 2L U 2R' U' 2L' U2 Rw
15 HTM · 11 STM · 16 QTM
3-gen
rotationless
<U,R,L>
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: 2D' 2B' 2D B2 2D' 2B 2D B2. Every algorithm above was run by our logic engine from that state and reaches "solved".