Dutch Flat Mates (Classic)
(Published on 18. October 2023, 11:30 by Flinty)
Normal Sudoku rules apply.
5's live in Dutch Flats
All 5's in the grid must strictly have EITHER; a '1' directly above it AND/OR a '9' directly below it. It may have both, but it doesn't need both.
Examples provided below on an empty grid.
This will be a weekly series for as long as my brain allows:
Dutch Flat Mates 1: Classic
Dutch Flat Mates 2: Thermometers (25 Oct)
Solution code: Row 4 followed by row 6. (18 digits)
Comments
on 24. October 2024, 15:54 by kredenc
Interesting and fun rule set, in this classic version very beginner-friendly. :) Thanks, Flinty!
on 11. September 2024, 22:17 by SHERAX
Nice gimmick
on 6. September 2024, 17:24 by permafrostyx
yay 2:35
on 20. June 2024, 20:15 by zimmicks
15:34
What a nice puzzle!
on 9. March 2024, 13:29 by NordenShield
This was a very fun constraint, I enjoyed it very much.
on 8. November 2023, 13:48 by ViKingPrime
I'm a little surprised at the rating, I quite like this constraint. It's subtle but meaningful, easy to grasp and comes with a lot of implications for other constraints - looking forward to the rest of the series.
on 6. November 2023, 18:39 by Flinty
Puzzle renamed from Dutch Flat Mates 1 to Dutch Flat Mates (Classic).
on 27. October 2023, 05:34 by Tingo
This is a great puzzle with the 5s rule. I very much enjoyed it!
on 23. October 2023, 21:55 by sujoyku
The rule set was very enjoyable. Thank you for setting and sharing this fun puzzle, Flinty!
on 19. October 2023, 16:07 by Solved647
Enjoyed this change in the rules.
on 18. October 2023, 11:51 by anyeyeball
Very nice puzzle. Looking forward to more of these. Thanks!
