Distinct Neighbourhoods
(Published on 30. October 2025, 01:42 by Moonsinh)
Normal Sudoku rules apply: Place the digits 1-9 once each into each row, column and 3x3 box.
Normal Partial Kropki rules apply: two cells connected by a white dot contain consecutive digits. adjacent to a black dot, one digit is double the other.
Zoning Districts: Each island outlined by a dashed line (cage) shows the lowest digit it contains in its upper left corner.
No Repeats: Whenever two islands are connected by a yellow road bridge, all cells on both islands taken together contain no repeated digits.
(other than that, the yellow line is cosmetic, as are the small grey lines).
Play in Sudokupad.
Normal Partial Kropki rules apply: two cells connected by a white dot contain consecutive digits. adjacent to a black dot, one digit is double the other.
Zoning Districts: Each island outlined by a dashed line (cage) shows the lowest digit it contains in its upper left corner.
No Repeats: Whenever two islands are connected by a yellow road bridge, all cells on both islands taken together contain no repeated digits.
(other than that, the yellow line is cosmetic, as are the small grey lines).
Play in Sudokupad.
Solution code: Row 7
Last changed on on 30. October 2025, 12:54
Solved by Elliebot, moo, GaviGuy, qmxqmx123, kyuquu, SKORP17, Megalobrainiac, PuzzlePatzer, ymhsbmbesitwf, egglet, Franjoho, geswat, dzamie, D00m, Nagesh, paranoid
Comments
on 1. November 2025, 07:31 by dzamie
Nice! Not very difficult, though I'll credit that with the connected-cages conflict checker working exceedingly well. I'm sure I would've missed a lot if I had only myself to rely on for "is this digit in a connected cage"
on 30. October 2025, 21:20 by PuzzlePatzer
very nice - it is hard to believe that you can fill the grid with such 'simple' rules :) Thanks for sharing
btw, the black kropki rule is missing from Sudokupad
on 30. October 2025, 12:54 by Moonsinh
added (standard) black kropki rule explanation
