QI

Corner comms
Q first
From memo: the pair's letters are the case. The diagram shows the buffer and both targets lettered, the rest greyed.
Your status
Recognition & spaced review

Algorithms (4)

R U' D' R' D' R U2 R' D R U' D R'
My choice
13 HTM · 13 STM · 14 QTM
3-gen
rotationless
<U,R,D>
One hand: R, U and M with F or D
BLDDB, on 42 solvers' sheets
R U2 D R D' R' U2 R D R' D' R'
12 HTM · 12 STM · 14 QTM
3-gen
rotationless
<U,R,D>
One hand: R, U and M with F or D
BLDDB, on 11 solvers' sheets
R' D' R' D F2 D' R D R' F2 R2
11 HTM · 11 STM · 14 QTM
3-gen
rotationless
<R,F,D>
One hand: R, U and M with F and D
BLDDB, on 1 solver's sheet
R' D R U D' R' D R U2 R' D' R U D R' D' R
17 HTM · 17 STM · 18 QTM
3-gen
rotationless
<U,R,D>
One hand: R, U and M with F or D
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: R D R D' R' U2 R D R' D' U2 R'. Every algorithm above was run by our logic engine from that state and reaches "solved".