Rules:
Normal Sudoku rules apply.
German Whispers: Adjacent digits along a green line must differ by at least 5.
Renban Lines: Digits along a purple line form a non-repeating set of consecutive digits in any order.
Modular Cages: Digits in a cage sum to a multiple of the given clue at the top of the cage. Digits may repeat within a modular cage if allowed by other rules.
Solution code: Row 9
on 31. January 2026, 06:17 by MonsieurTRISTE
Definitely one of the nicest coloring puzzle.