QD

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

Algorithms (3)

U 2L 2U2 2L' U2 2L 2U2 2L' U
My choice
15 HTM · 9 STM · 20 QTM
2-gen
rotationless
<U,L>
One hand: needs L, B, S or E
BLDDB, on 5 solvers' sheets
Lw U2 2L' U' 2R' U 2L U' 2R U' Lw'
15 HTM · 11 STM · 16 QTM
3-gen
rotationless
<U,R,L>
One hand: needs L, B, S or E
BLDDB, on 2 solvers' sheets
y 2L 2U 2L' U2 2L 2U' 2L' U2 y'
14 HTM · 8 STM · 16 QTM
2-gen
rotation
<U,L>
One hand: needs L, B, S or E
BLDDB, on 1 solver's sheet

How this case is verified

The case is the source's setup (or, where it has none, another source algorithm reversed). Setup: Lw U 2R' U 2L' U' 2R U 2L U2 Lw'. Every algorithm above was run by our logic engine from that state and reaches "solved".