Dutch Flat Mates: Classic
(Published on 18. October 2023, 11:30 by Flinty)
Special Thanks
Thank you for checking out puzzle Number One in the series. After puzzle #100 was released, I came back here and did t a little housekeeping.
Dutch Flat Mate Puzzles
This is where it started on '18 Oct 23'. I updated this puzzle on 10 Sep 25, by improving the rules and removing 6 redundant givens that make the puzzle fairly trivial. Here is a spreadsheet link for all the 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
Original Link: Click Here
*The original puzzle contains badly worded rules and 6 extra givens.
Initial Setter Difficulty: 1.5 / 5
Normal Sudoku rules apply
Place the digits 1-9 so that they do not repeat in any row, column, or 3x3 box.
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.
Solution code: Row 5 (from left to right)
Comments
on 10. September 2025, 14:59 by Flinty
I have removed 6 given digits, and carried out some housekeeping on the rules and LMD page. The original puzzle is still available.
on 20. February 2025, 18:43 by Richard
Interesting new ruleset! Tomorrow's SVS is my take on it. :)
on 17. February 2025, 04:41 by PhoenixAki
I'm also a bit surprised this isn't a bit higher rated, it's definitely a simple 1-star puzzle but most 1-star puzzles on LMD are snack-sized or so simple there's not a ton of interesting logic in them, this actually made me think a bit while still staying simple. Nicely done!
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!
