D4t+
Notation
Nautilus 1LLL
LL Diamonds / D4
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 R L' U' R' L R L' U R' U L
My choice
15 HTM · 15 STM · 15 QTM
3-gen
rotationless
<U,R,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' L' U' R U' L R' L' R U L R' L' U L R' R'. Every algorithm above was run by our logic engine from that state and reaches "solved-up-to-r".