Rules:
Normal Sudoku rules apply.
Thermo: Digits along a thermo increase from the bulb to the end.
Whispers: Adjacent digits on a green or light brown line differ by at least 5.
Renban: Each red line contains a set of consecutive digits (in any order).
KILLER: Digits in a cage sum to the given total.
Solve online:
Solution code: Row 9 (left to right)
on 2. April 2024, 20:00 by StephenR
Very well engineered, thanks.
on 7. October 2023, 19:19 by rdesmarais2
Beautiful puzzle! I got the initial break in fairly intuitively but the second hard step threw me at first and I broke the puzzle. Had to rerack and it was a smooth fun solve!
on 6. October 2023, 12:33 by HumanBirdsong
Fantastic break-in! Definitely at the harder end of three star for me, but it was enjoyable throughout.
on 6. October 2023, 00:07 by Nordy
Beautiful theme and a smooth solve (once you spot the way forward)! I found many steps quite surprising, which I personally enjoy greatly
on 5. October 2023, 18:14 by kporadzinski
A very logical step-by-step puzzle. Quite a difficult logic, but only until you discover the nature of the "28" cage. I spend great time solving it.
on 5. October 2023, 17:44 by juhish
Really nice! But also really hard for me for some reason, it took me twice as long as a 3-star puzzle usually..
on 5. October 2023, 02:31 by Calvinball
Leave it to mathpesto to turn a beautiful theme into such an elegant solve.