XO
Corner comms
X 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)
R2 D' R U R' D' R U' R' D2 R2
My choice
11 HTM · 11 STM · 14 QTM
3-gen
rotationless
<U,R,D>
One hand: R, U and M with F or D
BLDDB, on 24 solvers' sheets
U' R' U R' D2 R U' R' D2 R2 U
11 HTM · 11 STM · 14 QTM
3-gen
rotationless
<U,R,D>
One hand: R, U and M with F or D
BLDDB, on 17 solvers' sheets
U r2 U' R' U r2 D' R U' D
10 HTM · 10 STM · 12 QTM
3-gen
rotationless
<U,R,D>
One hand: R, U and M with F or D
BLDDB, on 8 solvers' sheets
U' R' D' R D R' U' R D' R' U D R U
14 HTM · 14 STM · 14 QTM
3-gen
rotationless
<U,R,D>
One hand: R, U and M with F or D
BLDDB, on 6 solvers' sheets
How this case is verified
The case is the source's setup (or, where it has none, another source algorithm reversed). Setup: U' R2 D2 R U R' D2 R U' R U. Every algorithm above was run by our logic engine from that state and reaches "solved".