Dutch Flat Mates: Outside (Irregular) (palpot collab)
(Published on 1. October 2025, 07:00 by Flinty)
Special Thanks
Thank you to palpot for setting this puzzle with me. We both really hope you enjoy it.
Previous Dutch Flat Mate Puzzles
This has been a weekly series since '18 Oct 23'. Here is a spreadsheet link for all the previous puzzles in the series, which also has a few teasers for upcoming constraints/guest setters in the series (subject to change).
This alternative link offers a limited LMD search for Dutch Flat Mates.
To play the puzzle, please click the image:
Puzzle Link: Click Here
Initial Setter Difficulty: 3 / 5
Irregular Sudoku rules apply
Place the digits 1-9 so that they do not repeat in any row, column, or region.
Dutch Flats
Every 5 in the grid must have a '1' directly above it or a '9' directly below it. It may have both, but it doesn't need both.
Outside
Digits outside the grid have to be placed in the first 3 cells in the corresponding row or column, but not necessarily in the order given.
Hint to start
Flat Mates! When 9 is unavailable, 5 needs a 1 to be a happy boi!
Guest Setter
Black_Doom is back, and he's playing hide and seek with
Skyscrapers!
Solution code: Row 3 (digits from left to right)
Comments
on 5. October 2025, 19:41 by Franjo
Thank you very much for creating and sharing another lovely DFM-puzzle.
on 3. October 2025, 23:59 by widjo
This might be one of my favourite Dutch flat mates puzzles now, the interactions were so much fun!
on 3. October 2025, 18:09 by Qodec
Excellent puzzle!
on 3. October 2025, 15:28 by wfhregulator
Lovely solve, clever break-in, really unique and "non-sudoku" like directional logic. Very clever.
on 1. October 2025, 19:10 by Exigus
Great addition to the series. Thanks!
on 1. October 2025, 07:33 by marcmees
very entertaining. Thanks
