Logic Masters Deutschland e.V.

Reversing Valve (Dynamic Fog Edition)

(Published on 4. June 2025, 15:56 by ViKingPrime)


PUZZLE:

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RULES:

Normal SUDOKU rules apply.

The value of cells within a KILLER thermostat must sum to the number in the top-left corner (if given); digits may not repeat in a thermostat but values may.

The value of cells along a THERMOMETER must strictly increase from bulb to tip.

There are nine (9) HOT cells contained within the grid comprised of a set of the digits 1-9. Each row, column and box contains exactly one Hot cell. There are nine COLD cells contained within the grid following the same rules as the Hot cells. A cell may have only one of these roles. The value of a Hot cell is one more than the contained digit; and the value of a Cold cell is one less.


INTRODUCTION:

So as an excuse to experiment with Dynamic Fog rules for the first time, I decided to remaster an older puzzle of mine. It had a few tougher steps towards the end that — if Dynamic Fog had existed at the time — would have been telegraphed to the solver in a much clearer way.

It turns out that Dynamic Fog is a lot of fun to work with! I'm excited to give it a try in future puzzles.

Credit for the modifier constraint goes to brennan77, who created something quite approachable. I think this ruleset in particular is a wonderful introduction to solvers who might be new to modified cells.

Have fun!


     

Watch on Cracking the Cryptic



Solution code: The value of each cell along Row 8, left to right.

Last changed on on 1. July 2025, 00:18

Solved by vitaminz, SKORP17, Snookerfan, lianarox, Elker, kublai, JSG, lune, Myreque, egglet, Neumino, pmatos, bansalsaab, avishai, jams, Elliott810, SPring, MartinR, jkuo7, Chishiri, Piff, sorryimLate, ... MaxSmartable, sarabtx, jinkela114514, itweb, zeniko, abysszealot, tonald, zhugelianglongming, WvdWest, fkib, blueberrypug, QuiltyAsCharged, tuoni2, mihau730, yellow, gdc, Sewerin, halakani
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Comments

on 5. June 2025, 22:50 by Christounet
Very cool reboot with a trickier ending ! Thanks ;)

on 5. June 2025, 19:01 by Exigus
Most of it was smooth but a bit tricky towards the end. Wonderful puzzle. Thanks!

on 4. June 2025, 17:32 by Snookerfan
Very nice! Dynamic fog works really well here. Thank you

on 4. June 2025, 16:02 by vitaminz
I hadn’t done the original but I really liked this version. Tough for me to spot the first digit but was lovely and smooth after that.

Difficulty:4
Rating:93 %
Solved:47 times
Observed:4 times
ID:000NNC

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Solution code:

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