Four Calling Birds
(Published on 22. December 2025, 18:59 by Mr Toffee)
Slow-Thermo Sudoku
(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: Row 1 from left to right
Last changed on on 23. December 2025, 03:32
Solved by jalebc, SKORP17, flipping, pepe74287, BBoris, PinkNickels, drmegadude, allama, johnreid, carlytieb, hige, Sralser, Leoninus, Kirra, Casp_p, BakBak, TaeChi, Photyne, geronimo92, TCK Green, zrbakhtiar, ome86, Crul, teuthida
