D15o+
Notation
Nautilus 1LLL
LL Diamonds / D15
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 R' L' U L' B L B' U' L R L'
My choice
13 HTM · 13 STM · 13 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' L R' L' U B L' B' L U' L R L' R' R'. Every algorithm above was run by our logic engine from that state and reaches "solved-up-to-r".