T3r
Notation
Nautilus 1LLL
LL Trapezoids / T3
Match the case drawing, including the side colours and the pieces already solved; hold the puzzle as drawn.
Your status
Algorithms (1)
(R) first, then:
R' F' R' L' R L F R F R' L' R' L R' F'
My choice
15 HTM · 15 STM · 15 QTM
3-gen
rotationless
<R,F,L>
Do R first on the case as drawn. · Cubemuch
How this case is verified
The source's case image defines this case; its setup is reconstructed and checked against that independent pattern. Setup: R F R L' R L R F' R' F' L' R' L R F R R'. Every algorithm above was run by our logic engine from that state and reaches "solved-up-to-r".