Sudoku: Normal Sudoku rules apply.
Fog: The grid is partially covered in fog. Correctly placing digits will clear the fog around that cell. No guessing is required.
Kropki: Digits in cells separated by a black dot have a 1:2 ratio.
German Whispers: Adjacent digits along a green line have a difference of at least 5.
Each end of a whisper line points towards a cell. The digit at each end of a Whisper line is placed N cells away from the other end (In the pointed direction), where N is the digit at the other end of the line.
Whisper lines may not branch or fork.
Rules example:
Solution code: Row 6
on 21. June 2025, 11:42 by Lovejoy
Great puzzle. It's always a nice surprise when one of your puzzles drops
on 10. June 2025, 00:43 by NotSoMagnifique
Absolutely in love with this constraint!
on 9. June 2025, 16:35 by croo377
Really liked the whisper line rule. Would love to see more of it.
on 8. June 2025, 20:25 by JoBerlin
Very cool rule!
on 8. June 2025, 06:40 by MuShin
Very interesting extra rules for whispering lines! The diagonally pointing gives the puzzle a lot of variation. The whole puzzle is relatively easy, and hopefully there will be a more difficult version.
on 7. June 2025, 23:22 by nunc
Very fun puzzle. The example was really helpful, then all went very smoothly. Thanks for sharing.
on 7. June 2025, 21:10 by saxdaddyj
Loved the ruleset. Thanks!
on 7. June 2025, 16:51 by dingledork
Great rule. Took a second to wrap my head around it but then everything worked out beautifully. I’d love to see a more difficult version!
on 7. June 2025, 14:18 by Mutiny
very fun! nice logic!
on 7. June 2025, 14:00 by GT-R Penguin
Loved this additional GW rule - thank you!
on 7. June 2025, 09:13 by Wuschel
Very nice and smooth.
on 7. June 2025, 08:14 by shartus
Takes one line to get your grips and then so smooth!
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