Normal Sudoku Rules: The digits 1-9 must be placed in each row, column, and box so that no digit is repeated in a row, column, or box.
Normal Slow Thermometer Rules: The digits along a slow thermometer must never decrease starting from the bulb end of the thermometer.
Solution code: The solution code is the numbers along the negative diagonal (r1c1, r2c2, r3c3, etc).
on 19. June 2024, 23:42 by Fisherman
Premium puzzle.
on 15. June 2024, 03:54 by voldemortensen
Added link