Candidate #1
Possibility of #ViolaFail: moderate
This passage has a couple of things going on: 1) visually cluttered due to the divisi and all of the accidentals squished in there. 2) This passage is in 6/8, but really it’s a big hemiola, so the viola part is actually in 3/4. If you rebeam it in 3/4, separate out the two parts, and change a few notes to their enharmonic equivalent, it’s practically sight readable.