Circular Regioning
- Kropki dots
- Thermometers
- Region sum lines
The brief
Normal sudoku rules apply. A circled digit indicates exactly how many circles contain that digit. (Note: This also includes the circle in the bulb of the thermometer.) The red and the blue line are region sum lines, i.e. in each 3x3 box the digits on such a line sum to the same value. (The value of the blue line may differ from the value of the red line.) Along a thermometer digits are strictly increasing from the bulb end. Digits joined by a white dot are consecutive. (Not all dots are given.)