D13b+
Notation
Nautilus 1LLL
LL Diamonds / D13
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' B R U' L R' L' R U R' B'
My choice
11 HTM · 11 STM · 11 QTM
rotationless
<U,R,L,B>
Do R first on the case as drawn. · Cubemuch
(R) first, then:
R' L' R L F D' L D L' F' L' R' L
13 HTM · 13 STM · 13 QTM
rotationless
<R,F,D,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: L' R L F L D' L' D F' L' R' L R R'. Every algorithm above was run by our logic engine from that state and reaches "solved-up-to-r".