D3t-
Notation
Nautilus 1LLL
LL Diamonds / D3
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 F R L' R' L F' R L' R' U'
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: U R L R' F L' R L R' F' L' U' R' R. Every algorithm above was run by our logic engine from that state and reaches "solved-up-to-r".