Rules:
Normal Sudoku rules apply. The coloured cells are clones (Numbers that appear in one part of the clone must appear in exactly the same position in the other part). Cells that are a chess knight's move apart must not contain the same number.
Solution code: row 5 (nine digits from left to right)
on 24. August 2021, 14:47 by CapnTeddy
really beautiful logic
on 23. August 2021, 20:26 by Mathaccit
Cool puzzle. Really elegant.
Please note: The German version of this page has changed. It is possible that this page does not contain the latest information.