Suguru Chaos Deconstruction #2: Kropki Edition
(Published on 16. February 2022, 03:51 by mathpesto)
People seemed to enjoy my previous puzzle, "Suguru Chaos Deconstruction", so I decided to make a sequel. Hope you like this one too!
Rules:
Fill some cells in the grid with the digits 1–9 such that no digit repeats in a row or column. Cells with a circle, square, or dot must have a digit in them.
Gray squares contain even digits and gray circles contain odd digits. All* adjacent digits that are consecutive are marked by a white dot and all* adjacent digits that are in a 1:2 ratio are marked by a black dot. (*Note: If the digits 1 and 2 are adjacent, they may be marked by either dot.)
All digits must belong to a region, which is a collection of orthogonally connected cells. A region of size n contains the digits 1 through n once each. Regions may not touch each other orthogonally, although they may touch each other diagonally.
Puzzle:
Solution code: Ignoring blank cells, write the digits in Rows 1 and 2 (left to right, no spaces)
Comments
on 24. July 2024, 16:58 by TryingMyBest
New favorite puzzle type
on 1. April 2023, 04:08 by Mikemerin
I was stuck for an hour with half the grid done trying to figure out why there were so many possible solutions with no clear path, then I re-read the instructions and realized the dots had a negative constraint
on 1. April 2023, 04:05 by Mikemerin
I was stuck for an hour with half the grid done trying to figure out why there were so many possible paths towards finding a solution, then I re-read the instructions and realized the dots had a negative constraint lol
Another great puzzle in the series! Enjoying them all, onto the next.
on 16. August 2022, 20:16 by StephenR
Excellent puzzle, thanks, and something of a rollercoaster for me as twice I thought I'd broken it before remembering that regions didn't have to be nine large!
on 8. May 2022, 15:02 by Niverio
Another very cool entry in the SCD series.
-------
Thank you!
on 27. March 2022, 14:58 by Christounet
Great puzzle again ! I'm currently going through this whole Suguru serie with a lot of fun, and even there are similarities in the solving pattern, there's always something fresh with the use of a different constraint. It felt so satisfying that the negative constraint (all the dots are given) was so important for the solve during the whole process... Again, so impressed... I've done 3 of the 5 existing puzzles in this series. Onto the fourth one ! And looking forward the sixth installment, if it ever comes out ! (Fingers crossed !)
---------
@Christounet: That's fantastic! So glad you're enjoying them. I just put out another one: https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=0009HP -mathpesto
on 8. March 2022, 13:01 by Mody
Ich freue mich darauf :)
I am looking forward to it :)
————————
@mody: here it is https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=0009AW
on 7. March 2022, 10:45 by Mody
Wunderbare Serie, jedes schön auf seine Weise.
Wonderful series, each beautiful in its own way
--------
@Mody Thank you! I'm in the midst of constructing a fourth one in the series, so be on the lookout for that in the next few days :-)
on 5. March 2022, 08:35 by Phistomefel
I found this one considerably harder than your first Suguru Chaos Deconstruction and even more beautiful. Thank you for constructing this beauty, mathpesto!
Just out of curiosity: How difficult is it during the construction to always make sure that there doesn't appear a 1-region out of the blue?
---------
@Phistomefel: Thank you so much, that means a lot coming from you! I would love for you to try out my third one in the series (https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=00096K); it's the one I'm most pleased with, thought it is considerably harder than these two. (There'll be a fourth one soon involving Japanese Sums and Renban lines.)
When constructing, figuring out where all the 1's might go is something I do early on, so thankfully I manage to avoid having to deal with a whole bunch of 1-cell regions showing up later.
on 3. March 2022, 20:55 by mathpesto
Clarified rules to explicitly state all digits must belong to a region.
on 21. February 2022, 01:08 by Krokant
Another stunning puzzle. I'm really enjoying these deconstruction puzzles. :)
on 19. February 2022, 12:44 by Bootenks
What a shiny piece of work. @Mathpesto You could really be proud to create such a masterpiece.
The difficulty is more between 3 and 4 in my opinion. After you figure out how to do it, you will glide through it.
Wonderful, purely wonderful.. :)
----------
@Bootenks Thank you so much for the kind words!
on 18. February 2022, 01:23 by abed hawila
Masterpiece!
on 17. February 2022, 22:45 by Jjesper
82:36 which I am pretty happy with since I normally don't attempt harder puzzles. also, I've never done one of these puzzles before. but this was an incredible ride. I'm happy that I gave it a shot since it was a ton of fun to solve. might check out the previous and further puzzles in this series.
on 17. February 2022, 15:54 by Bankey
Very tough but enjoyable solve ! Thanks for setting, @ mathpesto :-)
on 17. February 2022, 08:53 by Elliott810
Great idea and very nice implementation! Really impressive work. Take a bow and thanks for sharing:)
--------
@Elliott810: Thank you so much! Glad you enjoyed it!
on 17. February 2022, 05:45 by henrypijames
Even though I like Kropki more than arrows, I found the first puzzle more interesting. I was wondering why, and now I know: Kropi dots can't go diagonally across regions, whereas arrows can, thus creating more interaction. So, for the next puzzle in this series, maybe try renban? Or equal sums, that'd be really vicious (since one doesn't know a priori if a diagonal line section really crosses regions or not).
-------------
@henrypijames I've definitely been thinking about another puzzle like these past two, and have been planning on using something involving diagonal lines. Equal sums sounds like a fantastic idea, but I don't think I have the brains for constructing that!
<<<
Come to think of it, has anyone ever done an equal sums chaos construction? Seems to me that equal sums would instantly and invariably be terrifying when you don't know where the borders are.
Edit: Okay, I just got started on Ne Plus Ultra (#90V).
Edit: Finished it. That puzzle is, as many have commented, "insane". Borderless ES is just one of many things that makes it so. Must be seen to be believed ...
on 17. February 2022, 02:49 by mathpesto
Added walkthrough of solution
on 16. February 2022, 18:58 by matiasv5
Both of these puzzles have been wonderful and so much fun! Would love to see more of these. Thank you very much for your work.
------
@matiasv5 Thank you, that means a lot!
on 16. February 2022, 14:17 by Statistica
Ganz klasse. Hat viel Spaß gemacht!
-------
@Statistica: Danke schön!
on 16. February 2022, 12:08 by kolot
Very beautiful again!
--------
@kolot: Thank you!
on 16. February 2022, 06:47 by henrypijames
I'm getting better at this, only 3⅔ stars difficulty now (having alrwady done the first; also doing generally better with Kropki than arrows).
--------
@henrypijames That's great! Personally I'd put it at a 3 13/17 difficulty ;-)
