I'm stuck on this game of Slitherlink. What deduction (or deductions) can be made from here? Am I missing something obvious?
I verified that everything I have so far is correct by looking at the solution.
This is game 6x6t4:a4143b22a3a2g4d32a3a3b0a1b34b2h32a21b2a (width 6, height 6, grid type "Cairo", difficulty hard) in Simon Tatham's "Loopy", version 20190415.e2135d5.