TOUGH
(Published on 18. September 2025, 18:47 by DocLogic)
Normal Sudoku rules apply.
German Whispers: digits along each green line have a difference of at least 5 to their neighbor(s).
Kropki: digits separated by a black dot have a ratio of 1:2. Digits separated by a white dot are consecutive. Not all possible dots are given.
Sudokupad: Link to Sudokupad
F-Puzzles-Link: F-Puzzles link
PS: if you like this puzzle, please check my other puzzles with the theme "difficulty level":
Solution code: the left column
Comments
on 1. October 2025, 19:09 by Ragna
Fantastisch! Dankeschön. :-)
on 23. September 2025, 07:59 by snuuba
Quite clever and somewhat unusual break-in, probably a 2.5* in my books because of that. Once in, it was smooth sailing until the end. Many thanks.
on 18. September 2025, 22:24 by VitP
requires a good understanding of the procedures for german whispers. then it's fairly easy.
so, level 2
