The quiet summing miracles hidden in the heat
- Kropki dots
- Thermometers
- Region sum lines
- Whisper lines
- Renban lines
- Little killers
The brief
Normal sudoku rules apply. Place the digits 1-9 once each in every row, column and 3x3 box. Cells separated by a black dot has one digit double the other (1:2 ratio). Digits on a purple renban must be a set of consecutive digits in any order without repeat. Adjacent digits along a green line must differ by at least 5. Digits on a thermometer must rise from the bulb end. Box borders separate a blue line into equal sums. Clues outside the grid sum the digits along the indicated diagonal, digits may repeat. No negative constraints.