Nonoknights
(Published on 21. February 2026, 14:36 by Villse)
I got an idea to combine my two favorite types of puzzles, hope you enjoy it!
Rules:
Normal Sudoku rules apply. Place the digits 1-9 once in every row, column and 3x3 box.
Nonogram: The numbers outside the grid define a nonogram. Shade the cells in the grid so that the pattern of shaded cells matches the numbers given for each row and column. See the example of a solved nonogram below. A digit in a shaded cell must see the same digit a king’s move away at least once. All shaded cells are given; that is, a negative constraint applies.
Anti-Knight: Cells separated by a knight’s move in chess cannot contain the same digit.
Kropki dots: Cells separated by a white dot are consecutive; cells separated by a black dot must have a 1:2 ratio. Not all possible dots are necessarily given.
Solve online:Sudokupad
Happy solving!
Example of a solved nonogram
Solution code: Digits in row 9 (9 digits)
Comments
on 25. February 2026, 19:20 by illandres
It took me a bit to fully grasp the complete negative constraint, and until I finished the solve I still wasn't sure that I was right about it!
That said, this was an incredibly pleasurable challenge that took me about 2.5 hours over 3 days to solve!
on 25. February 2026, 18:53 by sparkymanu
Another amazing puzzle from @Villse, thank you so much for sharing ! I very much enjoy puzzles with several puzzles like this. After the shading I got a bit confident, the lettering (or colouring) humbled me very quickly!
Great fun 3* for me !
on 25. February 2026, 01:01 by sprinkle13
Very fun combination of two of my favorite types of puzzles!
on 23. February 2026, 10:01 by superkinkel
Brilliant, but definitely a three star to me!
on 22. February 2026, 19:00 by scarfdoku
Had to use letters and colors to help clarify things but it was very fun and smooth solve. Thanks for the great puzzle.
on 21. February 2026, 23:07 by Gullie
That was quite a bit harder than I expected, but I loved the interaction between the shaded cells, especially with the negative constraint. Thanks for setting and sharing!
on 21. February 2026, 17:59 by Villse
Clarification of rules
on 21. February 2026, 17:57 by Villse
Added the right link to solve!
on 21. February 2026, 15:17 by jalebc
Sudokupad
