Dutch Flat Mates: Anti-Kropki Lines
(Published on 22. January 2025, 11:00 by marty_sears)
Rules:
Normal Sudoku rules apply.
Dutch Flat Mates: 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.
Anti-Kropki Lines: No two digits ANYWHERE on a line may be consecutive, or in a 1:2 ratio (eg: If there is a 6 on a line, there can't be a 5, 7 or 3 anywhere on the same line.) However, digits may repeat on a line if allowed by sudoku. (Connected branches all count as one line.)
Please leave a comment if you enjoy :)
Solution code: Row 3 from left to right
Comments
on 1. February 2025, 01:41 by nunc
Thanks for yet another beautiful and very smooth puzzle!
on 31. January 2025, 22:34 by greyhathero
Fun solve. Felt more 3* than 2 to me
on 31. January 2025, 01:30 by QuiltyAsCharged
I enjoyed 10 :D
on 28. January 2025, 22:26 by mscha
Wonderful puzzle, Marty!
Too bad that anti-kropki lines are pretty much a one-trick pony, once you've figured them out, there are only limited combinations.
on 24. January 2025, 18:52 by gadgetgreen
Forgot the DFM as well. Half way in I was questioning myself and how this could ever solve.. Turns out I was just stupid. But the other stupid. Nonetheless, very nice puzzle and a cool new line type. Although quite restricted. Some lines were even not necessary for solving but who am I to judge.
on 23. January 2025, 19:24 by jakestilesowen
Beautiful interaction between the two mechanics. And fun solving path. Thanks for the puzzle!
on 23. January 2025, 18:21 by Caconym
It took me quite a while to understand the break in, but after that a very nice puzzle!
on 23. January 2025, 08:21 by PancakePie
Once a found a certain color scheme, I was off to the races! What a fun unwinding of a new-to-me rule set. Marvelous work as always! 37:52 flew by.
on 23. January 2025, 06:43 by Logerfo
Great puzzle, Marty! I started doing variant sudoku for about 3 months now and you're already my favorite setter so I finally created an account to comment that I enjoyed :) I'm hyped for Rat Run season 3!!
on 22. January 2025, 23:25 by wuc
Great addition. One step mid way was 2* to me. The rest a bit easier. Great fun solve thx.
on 22. January 2025, 23:17 by npinguy
@mccuskp, thank you - I was completely flummoxed until I read your comment.
on 22. January 2025, 22:43 by da-hans
Another nice series episode. Again not too difficult. Great flow and fun.
on 22. January 2025, 21:45 by anyeyeball
Brilliant ruleset and enjoyable puzzle. Dutch Flat Mates are always fun, and it was amazing to see how the number combinations on the Anti-Kropki Lines seemed to eliminate each other.
on 22. January 2025, 19:04 by vitaminz
Wonderful puzzle here with beautiful rule interactions, and very approachable. Whoever came up with this anti-kropki rule must be some really smart and attractive people :)
on 22. January 2025, 18:50 by mccuskp
I think I stared at this for five minutes wondering how the heck I would start (and how it was a 2 star puzzle), before I finally realized I misread the rules. I thought the anti-kropki lines only restricted adjacent digits on each line, not all of them. Very smooth and fun solve after that, and a lesson to always read the rules carefully!
on 22. January 2025, 18:44 by madhupt
Very nice puzzle! First the coloring fun, then the DFM really unravels it all in a very enjoyable solve. Thanks for sharing this lovely puzzle.
on 22. January 2025, 18:28 by marty_sears
I'm enjoying these comments
on 22. January 2025, 17:03 by Platinum
Really enjoyable
on 22. January 2025, 16:45 by 9Rookienumbers
I also enjoyed it. I also forgot about the DFM rule lol
on 22. January 2025, 16:27 by ViKingPrime
I've yet to enjoy
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UPDATE: I enjoyed 3
on 22. January 2025, 14:59 by sujoyku
Very nice DFM puzzle! Thank you, Marty!
on 22. January 2025, 14:17 by marcmees
sehr schon. danke
on 22. January 2025, 12:25 by alexsmart
Honestly, the "What am I missing? Oh, of course, I forgot the DFM rule" moment I get almost every time is my favorite part about solving DFM puzzles.
on 22. January 2025, 12:00 by Flinty
I enjoyed 2
on 22. January 2025, 11:56 by damo_89
I enjoyed
