Receding 'Airline
(Published on 1. October 2025, 16:27 by Mr Toffee)
Regular Sudoku
Slow-Thermo
(O) Bulbs ≤ Tips ( I )
Digits must never decrease along thermometers from bulb to tip.
...Digits may therefore repeat along thermometers.
Flows may merge or diverge, but must always end at a given tip.
Colours are merely aesthetic and not part of the puzzle.
Try the puzzle here
Solution code: Column 1 from top to bottom
Comments
on 3. October 2025, 23:26 by travel_de_puz
Strange that I found it's impossible to continue after I filling in R5C3..
on 3. October 2025, 23:05 by dzamie
Pretty procedural, but oddly calming. It's nice watching the numbers cascade up or down the thermos.
on 3. October 2025, 21:03 by VitP
the master of slow thermos returns.
this is level 1, because it needs only basic sudoku, plus knowing the standard slow thermo procedure.
on 2. October 2025, 10:13 by Casp_p
He's back!!!!!!!
on 1. October 2025, 19:23 by kkli
Welcome back, Mr Toffee, I solved all your puzzles and love your slow thermo series.
on 1. October 2025, 17:35 by Gambit
Welcome back MrToffee. Nice surprise seeing one of your puzzles pop up.
on 1. October 2025, 17:29 by PinkNickels
He's back!!!! Thanks for another fun one!
