IV
Corner comms
I first
From memo: the pair's letters are the case. The diagram shows the buffer and both targets lettered, the rest greyed.
Your status
Algorithms (4)
D' R U D R' D' R U2 R' D R U D' R' D
My choice
15 HTM · 15 STM · 16 QTM
3-gen
rotationless
<U,R,D>
One hand: R, U and M with F or D
BLDDB, on 39 solvers' sheets
R U' R' D' R' D R U2 R' D' R U2 D R U R'
16 HTM · 16 STM · 18 QTM
3-gen
rotationless
<U,R,D>
One hand: R, U and M with F or D
BLDDB, on 7 solvers' sheets
D2 R2 D' R' U2 R D R' U2 R' D2
11 HTM · 11 STM · 16 QTM
3-gen
rotationless
<U,R,D>
One hand: R, U and M with F or D
BLDDB, on 4 solvers' sheets
D' L F2 L' D L D' F2 D L'
10 HTM · 10 STM · 12 QTM
3-gen
rotationless
<F,D,L>
One hand: needs L, B, S or E
BLDDB, on 3 solvers' sheets
How this case is verified
The case is the source's setup (or, where it has none, another source algorithm reversed). Setup: R U' R' D' U2 R' D R U2 R' D' R D R U R'. Every algorithm above was run by our logic engine from that state and reaches "solved".