T3l-
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 U L U' Lw' B L' B' Lw R L R' U L' U'
My choice
15 HTM · 15 STM · 15 QTM
rotationless
<U,R,L,B>
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' U L U' R L' R' Lw' B L B' Lw U L' U' R' R'. Every algorithm above was run by our logic engine from that state and reaches "solved-up-to-r".