Normal sudoku rules apply. The grid is partially covered in fog. Placing correct digits will clear the fog from that digit’s surrounding cells. No domino in the grid sums to 3. The perimeter cells of the grid sum to 172. Digits along a thermometer must increase from the bulb end. Adjacent digits along a green line must differ by at least 5. Cells separated by a black dot must contain digits in a 1:2 ratio (ie one digit is double the other). Cells separated by a white dot must contain consecutive digits.