Normal sudoku rules apply.
Global Entropy: Each 2x2 area must contain one low digit (123), one medium digit (456) and one high digit (789).
Slow Thermos: Digits along slow thermometers must never decrease as they travel away from the bulb.
Solution code: column 1
on 8. December 2025, 18:18 by Exigus
Tha was very cool! Thanks!
on 6. December 2025, 15:22 by Tinnifer
Really cool puzzle! I did not find it easy but I enjoyed it a lot. Thanks :)
on 6. December 2025, 12:57 by Snookerfan
Brilliant puzzle! Very interesting interactions between the thermos and globlal entropy. A joy to solve, thanks!