Normal sudoku rules apply. Orthogonally adjacent cells must have a difference of at least 3. Identical digits cannot be a knight's move (in chess) away.
Link: F-Puzzle
Solution code: Column 8 followed by column 9
on 8. October 2023, 13:12 by Rollo
Wunderschön, wie sich aus nur 3 Vorgaben alles ergibt :-).
on 18. July 2023, 22:29 by PinkNickels
Interesting concept.