Hazy Radio Tower
(Published on 31. December 2025, 16:36 by Wiggel)
I woke up one day and decided to perform some black magic.
I present you with a new kind of fog sudoku. Enjoy.
Rules:
- Normal sudoku rules apply: Place the digits 1 to 9 once each, in every row, column and box.
- Hazy Fog: The grid is surrounded by fog. Placing correct digits may clear some fog. Stars are hiding behind the fog, which make new clues appear in the grid. Clues are always revealed in full and never partially.
- German Whispers: Adjacent digits on a green line have a difference of at least 5.
- Renban: Digits along a purple line form a set of consecutive, non-repeating digits (in any order).
- Kropki dots: Digits separated by a white dot are consecutive. Digits separated by a black dot are in a 1:2 ratio (i.e. one digit is double the other). Not all dots are given.
Solution code: Row 1 (left to right)
Comments
on 3. January 2026, 00:07 by lordtom
Genuinely one of the most enjoyable puzzles I’ve seen in a long time!
on 1. January 2026, 17:53 by lordtom
Genuinely one of the most enjoyable puzzles I’ve seen in a long time!
on 1. January 2026, 15:52 by lordtom
Genuinely one of the most enjoyable puzzles I’ve seen in a long time!
on 1. January 2026, 15:36 by lordtom
Genuinely one of the most enjoyable puzzles I’ve seen in a long time!
on 1. January 2026, 15:02 by Martina
Thank you for this beautiful puzzle.
on 31. December 2025, 23:29 by dzamie
That's really cool! A beautiful starry sky.
on 31. December 2025, 22:09 by HeyItsErin
I loved every minute of this. The presentation combined with how well the puzzle flows makes this an instant favorite for me.
on 31. December 2025, 20:18 by pjot
I loved this kind of fog!
on 31. December 2025, 19:22 by gdc
Very fun! I discovered the same fog-mask trick a few months ago and am super happy there is now a puzzle with it.
I like the presentation with the stars. Makes it very clear when new clues are added.
on 31. December 2025, 16:37 by Wiggel
Fix Description
