Dutch Flat Mates (Full File Kropki)
(Published on 18. December 2024, 11:30 by Flinty)
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.
Full File Kropki
Clues in a white circle indicate the exact number of white, Difference of 1, Kropki dots in their respective rows and columns.
Clues in a black circle indicate the exact number of black, Ratio 1:2, Kropki dots in their respective rows and columns.
Special Thanks
Puzzle inspiration from Where're The Kropkis? by Xenonelix
To play this weeks Dutch Flat Mates, please click here 'Play CTC'.
Optional hint to start
The White '7' clue only has two possible fills (because of Flat Mates). Using other clues quickly forces one of the options.
Example Image:
This demonstrates the puzzle rules, with the 'discovered' kropkis visible in their respective positions to hopefully aid understanding.
- Three black, Ratio 1:2, Kropki dots in Row 1.
- Three black, Ratio 1:2, Kropki dots in Row 2.
- Six white, Difference of 1, Kropki dots in Row 3.
This Weeks Puzzle:
Previous puzzles in the Dutch Flat Mates series:
- #01 - 18 Oct 23 - Classic
- #02 - 25 Oct 23 - Thermometers
- #03 - 01 Nov 23 - German Whispers
- #04 - 08 Nov 23 - Region Sum Lines
- #05 - 15 Nov 23 - Sandwich Sums
- #06 - 22 Nov 23 - Little Killer
- #07 - 29 Nov 23 - Kropki
- #08 - 05 Dec 23 - Zipper Lines
- #09 - 12 Dec 23 - Renban - By GoodCity
- #10 - 19 Dec 23 - Nabner - By GoodCity
- #11 - 26 Dec 23 - Skyscrapers - By GoodCity
- #12 - 03 Jan 24 - Dutch Whispers
- #13 - 10 Jan 24 - Killer Cages
- #14 - 17 Jan 24 - Arrows
- #15 - 24 Jan 24 - Ten Lines
- #16 - 31 Jan 24 - 159 Index and Even - By GoodCity
- #17 - 07 Feb 24 - Friendly Cells
- #18 - 14 Feb 24 - Quads
- #19 - 21 Feb 24 - Silent Killer - By GoodCity
- #20 - 28 Feb 24 - XV and Equality
- #21 - 06 Mar 24 - X-Sums
- #22 - 13 Mar 24 - Numbered Rooms - By GoodCity
- #23 - 20 Mar 24 - Diagonal X-Sums
- #24 - 27 Mar 24 - Yin Yang (Neighborhoods) - By Palpot
- #25 - 03 Apr 24 - Hit Points
- #26 - 10 Apr 24 - Counting Circles
- #27 - 17 Apr 24 - XY Difference - By GoodCity
- #28 - 24 Apr 24 - Double Sandwich Sums
- #29 - 01 May 24 - Foggy Knights
- #30 - 08 May 24 - Look and Say Little Killer
- #31 - 15 May 24 - Slingshot - By GoodCity
- #32 - 22 May 24 - 258 Index and Odd
- #33 - 29 May 24 - Rellik
- #34 - 05 Jun 24 - Search 9 - By Palpot
- #35 - 12 Jun 24 - Diagonal Outside
- #36 - 19 Jun 24 - Entropic Snake - Collab with Palpot
- #37 - 26 Jun 24 - Rossini - By GoodCity
- #38 - 03 Jul 24 - Pointer Arrows
- #39 - 10 Jul 24 - Same Difference - by Marty Sears
- #40 - 17 Jul 24 - Battenburg and Average Arrows
- #41 - 24 Jul 24 - Omnipotent Lines - by Sujoyku
- #42 - 31 Jul 24 - Modular Snake
- #43 - 07 Aug 24 - Hot and Cold Lines - by Marty Sears
- #44 - 14 Aug 24 - Minmax Quads - by Sujoyku
- #45 - 21 Aug 24 - Quad Sums - By GoodCity
- #46 - 28 Aug 24 - Entropic Whispers - by gdc
- #47 - 04 Sep 24 - Thripper Lines
- #48 - 11 Sep 24 - Index Lines - by Marty Sears
- #49 - 18 Sep 24 - Kroopki Doots - by Damo_89
- #50 - 25 Sep 24 - Frameless / X-Less X-Sums
- #51 - 02 Oct 24 - Full Rank - By GoodCity
- #52 - 09 Oct 24 - Japanese Sums
- #53 - 16 Oct 24 - Chaos Construction Shifter - Collab with Palpot
- #54 - 23 Oct 24 - Ten or Eleven - By Marty Sears
- #55 - 30 Oct 24 - Split Peas - By SamuPiano
- #56 - 06 Nov 24 - Zombie (Cages) - Collab with Palpot
- #57 - 13 Nov 24 - Sharing Cages - by Sujoyku
- #58 - 20 Nov 24 - Domino Flat Mates - by Prof.Dori
- #59 - 27 Nov 24 - Circuit Board
- #60 - 04 Dec 24 - Double Arrows - by Damo_89
- #61 - 11 Dec 24 - Chinese Whispers - by Black_Doom
Solution code: Digits in Column 8 (Top to bottom)
Comments
on 5. February 2025, 08:49 by Crusader175
Great addition to the series with clever break-in!
on 20. December 2024, 09:18 by ErnoWindt
Enjoyed the puzzle and the inspiration. Thanks.
on 20. December 2024, 00:03 by softie
I found the break-in pretty easy, but then some tricky and a bit tedious what-if exercises to make the final couple of key deductions before the rest of the puzzle filled itself in with Sudoku. Maybe I missed something simple.
on 19. December 2024, 14:29 by Franjo
Fantastic puzzle with a lovely break-in! Thank you very much for creating and sharing.
on 19. December 2024, 11:25 by Snookerfan
Beautiful! Thank you
on 18. December 2024, 19:39 by wuc
Found it 2.5 stars. Great addition. Refreshing ruleset thx.
on 18. December 2024, 19:14 by antiknight
Beautiful idea and break-in!
on 18. December 2024, 14:00 by da-hans
Very nice puzzle with a good flow after the break in. Love the fact that this series episode covers another unusual ruleset.
on 18. December 2024, 13:21 by sorryimLate
Great puzzle and fresh logic with some quite tricky deductions in mid-solve. I can imagine this was tough to set. Thanks!
on 18. December 2024, 13:09 by marcmees
top. Thanks
