Cells on thermos contain a digit from 1 to 9, and digits must strictly increase along thermos. Considering a cell with a digit N as a building of height N, a digit outside the grid indicates the number of buildings that can be seen from the perspective of that digit. A building obscures all buildings of equal or lesser height behind it.
CLARIFICATION: The thermos with bulbs in R2C9 and R3C10 both have their tip on R2C10.
Enjoy!
Solution code: Row 5 (9 digits, no spaces)
on 24. April 2023, 18:33 by PulverizingPancake
added clarification
on 24. April 2023, 09:52 by StefanSch
There are two thermos starting in R2C9 and R3C10 and both ending in R2C10.
on 17. April 2023, 20:10 by KNT
fantastic! really fun. thanks pancake :)
on 17. April 2023, 02:04 by wisty
One of my favorite skyscrapers puzzles, thanks for making this! The branching thermos allow for some fantastic logic
on 15. April 2023, 07:19 by alexlovi
Really enjoyable! Thank you!
on 14. April 2023, 17:20 by PulverizingPancake
added online solving tool tag