Thermodulators
- Kropki dots
- Thermometers
- Modular lines
The brief
Normal sudoku rules apply.
Modular lines: Modular lines: every set of three sequential digits along a line must contain a complete set of residues modulo 3, i.e. one digit from {1,4,7}, one from {2,5,8}, and one from {3,6,9}. Digits may repeat on a line if allowed by other rules.
Thermometers: Digits along a thermometer must strictly increase from bulb to tip. Digits along the thermometer do not have to be consecutive.
Kropki pairs: Digits separated by a black dot are in a 1:2 ratio. Not all possible dots are shown.