Chaos and Order
(Published on 23. October 2022, 17:34 by Raumplaner)
Rules
- Divide the grid into regions, each consisting of nine orthogonally connected cells. Each row, column and region must contain the digits 1 to 9 once each.
- Kropki pairs: Cells connected by a white dot are consecutive. Cells connected by a black dot have a ratio of 2:1. Not all possible dots are necessarily given (no negative constraint).
- Entropic lines: Any set of three sequential cells along an entropic line must contain a low digit (1,2,3), a middle digit (4,5,6) and a high digit (7,8,9). Digits can repeat on a line if allowed by other rules.
- Restoring order from chaos: If two cells of the same entropic strata (low/mid/high) touch each other orthogonally, they must not be part of the same region. Similarly, each region border within the grid must have two of the same entropic strata (low/mid/high) on both sides in different regions.
SudokuPad
Examples of valid and non-valid configurations for region building with green/yellow for regions and pencilmarks for entropic strata:
If you liked this puzzle, I highly recommend our free pack Layers of Entropy
Solution code: Row 2 (from left) and column 1 (from top - 18 digits in total):
Comments
on 26. October 2022, 17:18 by wenchang
Very nice tricky region setting. Spoiler alert!
https://youtu.be/lF0sqiauyqU
on 26. October 2022, 10:18 by sunnyjum
Very fun puzzle, thanks Raumplaner!
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Glad you enjoyed! (Raumplaner)
on 25. October 2022, 04:23 by IAlreadyHaveAKey
Not too hard, but still very satisfying when the penny dropped. Lovely puzzle!
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Many thanks for the feedback! (Raumplaner)
on 25. October 2022, 02:51 by JeremyDover
Sehr nett...danke schön!
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Vielen Dank! (Raumplaner)
on 24. October 2022, 01:19 by fabianv
Really surprising puzzle...had lots of fun testing this
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I was suprised while setting as well:) (Raumplaner)
on 23. October 2022, 19:45 by Crusader175
Very nice puzzle with a very good flow!
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Many thanks for testing this puzzle! (Raumplaner)
on 23. October 2022, 19:40 by Chilly
Very nice rule set, and not too hard. Enjoyed that a lot!
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Many thanks! Glad you enjoyed. (Raumplaner)
