Uniqueness, with a Nudge
(Published on 3. February 2026, 20:45 by rmulinix)
Author: R. Mullinix
Play : https://sudokupad.app/j5947yd09n
Rules
Normal Sudoku Rules apply: place the digits 1–9 exactly once in each row, column, and 3×3 box.Find nine Nudge cells in the grid one in each row, column, and 3×3 box, each containing a different digit. The value of a Nudge cell is its digit + 1.
Natural cells: A natural (non-Nudge) cell has a value equal to its written digit.
Unique values per clue type: For each clue type below, no value may appear more than once across all clues of that type. Example: if one cage contains value 4, then no other cage may contain value 4.
German Whispers: Cells joined by a green line must have values that differ by at least 5.
White dots: Cells separated by a white dot have consecutive values.
Black dots: Cells separated by a black dot have values in a 1:2 ratio.
Cages: No value may repeat within a cage.
Blue diagonal: Values along the marked diagonal must not repeat.
Solution code: Bottom row (left to right)
Comments
on 15. February 2026, 03:04 by rmulinix
-- updated play link rules clarification.
on 10. February 2026, 16:35 by NeilGirdhar
Wow, this is the hardest puzzle I've solved without making any mistakes. Really complex.
on 10. February 2026, 05:16 by titzen45
Love the „unique per constraint“ rule. Quite difficult for me, but I’m happy that I managed it in the end. :)
on 5. February 2026, 18:08 by jwsinclair
Enjoyed this a lot :) I can tell a lot of thought has been put into how to make full use of the ruleset.
on 4. February 2026, 11:03 by Snookerfan
Very nice! Incredible how such a simple twist on rules (nudge) can be so mind boggling. A real fun challenge, thanks.
