Unique under the Fog
(Published on 2. May 2025, 16:14 by Visumation)
Rules:
Normal sudoku rules apply.
Digits on a purple Renban line for a non-repeating set of consecutive digits. (RB)
Box borders divide blue Region Sum lines into segments with the same sum. (RS)
Neighbouring digits on a green German Whisper must have a difference if at keast 5. (GW)
Neighbouring digits on a red line must alternate parity. (P)
Digits separated by a black dot are in a 1:2 ratio.
Digits separated by a white dot are consecutive.
Cells with a grey square contain an even digit.
Each constraint type may contain no repeated digits anywhere in this puzzle. Eg. If one renban line contains a 5, then no other renban line may contain a 5.
Additionally the grid is partially covered in fog. Placing a correct digit may clear fog in somewhere in the grid.
Solution code: Row 1
Comments
on 3. June 2025, 22:06 by JoBerlin
Wow! There were two deductions that both led to an eight that felt really special!
on 20. May 2025, 23:50 by AnebodaSlatorp
Elegant and fun
on 20. May 2025, 04:56 by morgannamodeaura
i'm glad there are letter labels on the clues, because those parity lines do not look red to me
on 19. May 2025, 23:42 by ninjamunk
Sensational!!
Thanks a lot. /vis
on 12. May 2025, 12:11 by Snookerfan
Beautiful, thank you!
Thanks a lot. /vis
on 6. May 2025, 22:15 by etoler
I had a brief moment of terror near the end, but the rules came through for me. Lovely puzzle!
Thanks a lot. /vis
on 4. May 2025, 03:32 by ostio456
Absolutely fantastic puzzle with some beautiful deductions throughout, right to the end. Brought a smile to my fac whenever i passed through a moment is being stuck. Thanks for setting
Really happy to bring a smile to a face. Thanks a lot for solving, and for your kind comment. /vis
on 3. May 2025, 15:29 by argl
i enjoyed this thanks for setting!
You are most welcome. Thanks for solving. /vis
on 3. May 2025, 14:28 by Jeraldo82
Beautiful!
Thanks. /vis
on 3. May 2025, 01:13 by QuiltyAsCharged
Marvelous! I think I know exactly the spot keesh mentioned with "I thought I was missing a clue", lol.
Yeah. I think I know the spot as well. Thanks for soving and commenting. /vis
on 2. May 2025, 20:44 by liushong
Why can't R6c3 be 3?
You will have to make both ends 1 and 2. And they would therefore repeat on the blue line. /vis
on 2. May 2025, 20:20 by keesh
@PinkNickels Belamis has a 'Foggy Regional Constraints' (https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=000MV2). That was the first time i saw one, might be others but i really liked that puzzle; more approachable than this puzzle.
Thanks for solving and commenting. Yeah. Belamis original was really nice. And I agree. This is slightly harder. /vis
That said, this puzzle is really nice as well. I thought i was missing a clue, but of course it was sudoku.
on 2. May 2025, 19:49 by Myxo
Lots of fun and pretty approachable imo!
Thanks for solving Myxo. And yeah. Maybe a small3…;) /vis
on 2. May 2025, 19:45 by wuc
Thats a great puzzle. Lots of fun deductions thx.
Thanks for your comment. Glad you enjoyed. /vis
on 2. May 2025, 19:01 by PinkNickels
Super fun idea and excellent execution. I have seen the "disjoint on clues" before, but not mixed in with fog (as least that i can recall). Brilliant setting. Such a blast to solve.
Thanks a lot. In all fairness this was inspired by a puzzle by Belamis. /vis
on 2. May 2025, 18:35 by ChinStrap
Lovely! A very fun ruleset.
Thanks a lot. And thanks for the pre-test. Much appreciated. /vis
