Rules:
Place the digits 1-9 into every row, column, and irregularly-shaped 9 cell region.
Dutch Whisper: Adjacent digits along an orange line must differ by at least 4.
Renban: Digits along a purple line form a set of consecutive digits in any order.
Kropki Dots: If two digits are separated by a black dot, one is double the other.
Solution code: Row 6
on 8. January 2026, 09:32 by QuiltyAsCharged
Terrific puzzle that challenged me in a good way!
on 17. November 2025, 15:59 by PuzzlePatzer
Really enjoyable - thanks for sharing!