T4l-
Notation
Nautilus 1LLL
LL Trapezoids / T4
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' L' U' L U L F' L' U' L' U L F
My choice
13 HTM · 13 STM · 13 QTM
rotationless
<U,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: F' L' U' L U L F L' U' L' U L R R'. Every algorithm above was run by our logic engine from that state and reaches "solved-up-to-r".