success
I returned to the Einstein’s Fish logic puzzle that I got stuck on a couple years ago and solved it.
Oops. I just realized I solved the wrong Coudal puzzle. The original one I got stuck on was Lunch, not Einstein’s Fish. Oops. Give me a few minutes here.
Update: I figured out Lunch as well. It took a lot less time than Einstein’s Fish. (I was also a bit warmed up after Einstein’s Fish.)