Normal sudoku rules apply. Digits increase along thermometers from the bulb(s) to the end. Disjoint subset rules apply: a digit can never appear twice in the same cell within different 3x3 boxes.
Normal sudoku rules apply. Digits increase along thermometers from the bulb(s) to the end. Disjoint subset rules apply: a digit can never appear twice in the same cell within different 3x3 boxes.