Numbers on a thermometer must strictly increase as they move away from the bulb.
Numbers in highlighted cells will be the same on both thermos.
F-puzzles link - link to solve online
Solution code: Row 6 followed by Column 5
on 12. April 2021, 20:06 by Timwi
Unfortunately I could not find a break-in. I ended up making a guess (of one digit) and the rest fell into place. I would love to know what the intended break-in was.
on 12. April 2021, 19:22 by Kafkapharnaum
Man that was beautifully clever. It certainly got me to make this way harder than it should have been -- in fact you even made it hard to rate the difficulty!