D8b+
Notation
Nautilus 1LLL
LL Diamonds / D8
Match the case drawing, including the side colours and the pieces already solved; hold the puzzle as drawn.
Your status
Algorithms (2)
(R) first, then:
R' U' B L B L' U' R U L B' L' B' U' R' U'
My choice
16 HTM · 16 STM · 16 QTM
rotationless
<U,R,L,B>
Do R first on the case as drawn. · Cubemuch
(R) first, then:
R' U' L B' L' B' U' R U B L B L' U' R' U'
16 HTM · 16 STM · 16 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: U R U L B' L' B' U' R' U B L B L' U R R'. Every algorithm above was run by our logic engine from that state and reaches "solved-up-to-r".