Normal sudoku rules apply.
Digits increase along a thermometer, starting from the bulb end.
You can play the puzzle here: https://sudokupad.app/a3ndferu3r
Solution code: Row 7, left to right
on 20. February 2026, 22:48 by 99%Sneaky
Nice use of the givens, fun thermo logic, reminds me of the thermo puzzles I did back in the day that got me hooked on variant sudoku :)
on 19. February 2026, 21:25 by gwai77
Hards, but interesting logic here...