M
PLL
M - 2 3x1s
Look for blocks (pairs and lines of matching stickers) on the sides; their kind and position name the group.
Your status
Algorithms (3)
(U) R U R' U' R U R' U2' R U R2' U' R U' R' U2 R U2 R U' R'
My choice
21 HTM · 21 STM · 25 QTM
2-gen
rotationless
<U,R>
Do U first (AUF) on the case as drawn. · LowCubes
R' U2 R U2 R' U' F R2 U R2' U R2 U2' R2' F' R
16 HTM · 16 STM · 23 QTM
3-gen
rotationless
<U,R,F>
LowCubes
y2' R U R' U2' R' U2' R U R' U R2 U' R' U2 R U' R' U R U' R'
21 HTM · 21 STM · 25 QTM
2-gen
rotation
<U,R>
LowCubes
How this case is verified
The case is the source's setup (or, where it has none, another source algorithm reversed). Setup: R' F R2 U2 R2' U' R2 U' R2' F' U R U2' R' U2' R. Every algorithm above was run by our logic engine from that state and reaches "pll-solved", keeping first-layers and oll-solved.