Purple Lines
(Eingestellt am 16. Januar 2026, 13:46 Uhr von Wiggel)
This puzzle is a bit of a strange one, inspired by some of juggler's puzzles.
I hope you enjoy the journey.
Thanks to curlingclips for giving me the idea for this puzzle and for helping with some details.
Rules:
- Normal sudoku rules apply: Place the digits 1 to 9 once each, in every row, column and box.
- The grid is covered in fog, placing correct digits clears the fog somewhere in the grid.
No guessing is required, of course.
- Blue lines are Modular Lines, every connected run of 3 cells along them must contain one digit each from each modular set [147 258 369].
- Red lines are Parity Lines, when going along them, digits alternate between odd and even.
- Purple lines, ... - What? The title mentions purple lines?
What were they again? Maybe they were Renbans?
The digits on a Renban form a set of consecutive, non-repeating digits in any order.
- No, that was wrong! No purple line could ever be a valid Renban.
Ah, now I remember! They just combine the rules of the other two lines.
So a purple line is always a valid blue line and a valid red line.
At the same time! Good thing I remembered that.
- Now that I'm done explaining the rules, I have to get going.
I really hope the rules will help you with solving the puzzle.
Lösungscode: Row 1 (left to right)
Kommentare
Heute, 04:25 Uhr von juggler
Very sneaky! No idea how you pulled that off.
Gestern, 16:34 Uhr von l_ugray
That was truly delightful!
am 20. Januar 2026, 19:36 Uhr von Kawkaz
Honestly? Very cool trick, but to me it made the puzzle more boring. Might be better used in a more complex puzzle, this one was too easy
am 20. Januar 2026, 18:20 Uhr von alta1r
There truly is nothing like a puzzle that plays with words and rulesets, truly a pleasure solving this one !
am 20. Januar 2026, 17:09 Uhr von MikeMeech
Red, blue and purple are really hard for me to tell apart. I restarted 3 times at different points, but finally realized what was going on. I really loved it though. There were so many fun deductions.
am 20. Januar 2026, 14:34 Uhr von docpayce
Holy shit, this was AMAAAAZING. There were two really GREAT "ahaaaa" moments. That was astonishing and one of my favourite sudokus of all time! IMPRESSIVE! Simply impressive setting! @Wiggel, you f*****g nailed it!
am 20. Januar 2026, 13:09 Uhr von rednax37
That was a truly special puzzle - you don't come across special ones like these every day!
am 20. Januar 2026, 12:41 Uhr von myotisjohn
Genuinely one of my favorite puzzles ever! Easy solving until I went "wait a minute..." halfway through. Fantastic, creative, fun.
am 20. Januar 2026, 12:36 Uhr von Martina
Perfekt :-) thanks
am 20. Januar 2026, 12:32 Uhr von miranda_9
What a glorious idea! Fun solving from start to end...... and put a big smile on my face. Thank you Wiggel
am 20. Januar 2026, 09:05 Uhr von SirRanch
I noticed one change but not the other. Not until I went back to admire the grid. Blew me away. Amazing puzzle. Thank you and as CtC would say "Take a bow"
am 20. Januar 2026, 01:44 Uhr von Awedish
absolutely bonkers puzzle, i love the idea so much
am 19. Januar 2026, 23:35 Uhr von Aronana
How did I not notice that while it was happening? Brilliant puzz.
am 19. Januar 2026, 22:41 Uhr von Ratzfaz
Brilliant, if u have any issues - RTFM !
am 19. Januar 2026, 20:46 Uhr von sparkymanu
The puzzle was not too hard but the switch was brillant! I also had the "wait, what ?" moment that made me smile ; the mid was 1* until the end (providing you pay attention when reading the rules!)
am 17. Januar 2026, 23:08 Uhr von TheJRMY
Cut to me, repeatedly holding my phone at different angles and refreshing, then backing up to look at the preview photo before realizing what was going on…
am 17. Januar 2026, 13:16 Uhr von rojspencer
Loved it! Beginning to end.
am 17. Januar 2026, 02:07 Uhr von Zpixi09
stellar fog puzzle, didnt even notice what was happening until the fog fully cleared
am 16. Januar 2026, 22:15 Uhr von Gullie
Truly one of the funniest and sneakiest fog puzzles I’ve dver done. Very nice!!
am 16. Januar 2026, 21:51 Uhr von keenbowl
Lovely puzzle
am 16. Januar 2026, 21:33 Uhr von sujoyku
What a fun idea! Thank you, Wiggel!
am 16. Januar 2026, 21:30 Uhr von packt
Wow... i only noticed the trick by the very end, and then another one struck me hidden in plain sight! as someone who started doing sudoku only 2 months ago, this is now my favorite solved one :)
am 16. Januar 2026, 20:01 Uhr von Zelfie
Lovely puzzle and amazing flow... really loved the ruleset!
am 16. Januar 2026, 19:45 Uhr von hige
wow wow wow
i did not realize it happening at all
hint: read the rules just as far as you need to! ;)
am 16. Januar 2026, 19:32 Uhr von abihummel
Absolutely amazing! It took me so long to figure out what was going on. I almost want to re-solve it now knowing what to look for! Between this and "Hazy Radio Tower," you have cracked the code on fascinating fog variants. Keep them coming!!!
am 16. Januar 2026, 19:00 Uhr von Shearing
Same here. In the end I had to read the rules four times for it to click. Great puzzle!
am 16. Januar 2026, 18:55 Uhr von balpha
I was about to post exactly the same comment as Bussibaer, but after reading your response, I read the rules again ... and again ... and again ... and I finally saw it. Very sneaky, well played :D
This was fun!
am 16. Januar 2026, 18:52 Uhr von superkinkel
This is absolutely gorgeous. No spoiler here, but let's say, if you like fog of war, here is something happening that makes it fog squared!
Couldn't believe my eyes and thought there was a display defect first.
And - to drop a small hint - if you're stuck with disambiguating the final digit pair: Reread the rules very thoroughly, the clue is easy to miss.
Either way: This is one of the most remarkable puzzles I've seen and certainly one you will never forget.
am 16. Januar 2026, 17:53 Uhr von Adrian71
That was quite an experience! Fun puzzle, thanks!
am 16. Januar 2026, 14:09 Uhr von Manta-Ray
That was incredible! I have no idea how you did that effect, but I'd sure love to know :D
