Tiptoe
(Published on 1. November 2024, 21:24 by sujoyku)
- Normal sudoku rules apply, i.e. each row, column and 3x3 box has to contain the digits from 1 to 9 once each.
- Killer cages: Digits in a cage sum to the clue in the top left.
- German Whispers: Adjacent digits on a green line must differ by at least 5.
- Entropic Lines: Every set of three adjacent digits on an orange line must include a low digit (1, 2, 3), a medium digit (4, 5, 6), and a high digit (7, 8, 9).
Here you can solve the puzzle online:
Solution code: Row 1 from left to right (9 digits in total)
Comments
on 25. November 2024, 12:44 by Richard
Nice interplay between the different constraints!
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Thank you for your comment, Richard! I am glad that you enjoyed those interactions.
Kind regards, sujoyku
on 14. November 2024, 10:00 by Mundane
Lovely puzzle, thank you.
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You are much welcome, Mundane, thank you for your comment! I am glad you liked it.
Kind regards, sujoyku
on 10. November 2024, 17:03 by nunc
Again a lovely (and approachable) puzzle from you! Thanks a lot. I always enjoy them.
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You are much welcome, nunc, thank you for your comment! I am glad that you enjoyed this puzzle and found it to be approachable.
Kind regards, sujoyku
on 4. November 2024, 00:31 by Lenivaya_Joppa
Thank you for this nice puzzle, dear sujoyku! :)
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You are much welcome, Lenivaya_Joppa, thank you for your comment! I am glad that you liked the puzzle.
Kind regards, sujoyku
on 3. November 2024, 00:54 by HumanBirdsong
What a lovely puzzle, with some very satisfying interactions which ripple through the grid.
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Thank you for your comment, HumanBirdsong! I am glad that you enjoyed the interactions in this puzzle.
Kind regards, sujoyku
on 2. November 2024, 23:33 by VitP
interesting. resistance here is like semiconductor band structure. puzzle is completely intractable using basic techniques, but solves very easily as soon as you implement second-level protocols
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Thank you for your comment, VitP! Your description of the experienced difficulty is interesting. I think there are a few subtle points in the opening that are needed to break the puzzle open and after those it becomes easier.
Kind regards, sujoyku
on 2. November 2024, 02:09 by brandon_bot
Accidentally misread the orange line rule as modular lines. It seems there is a valid solution for that ruleset as well.
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Thank you for commenting, brandon_bot! That is curious. Is the solution also unique when replacing the entropic with a modular line? Anyhow, I hope you had a fun solve.
Kind regards, sujoyku
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Yes, there was a unique solution: https://imgur.com/a/VDEiQEU. I was very puzzled when entering the solution code failed.
The wrong-ruleset puzzle was significantly easier but I enjoyed both puzzles.
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Thank you for sharing the image, brandon_bot! Out of curiosity, I have just started to solve the puzzle with assuming modularity. It is indeed easier and probably mainly because of bypassing some logic one needs to figure out how R3 works for example. Very curious and fun coincidence!
on 1. November 2024, 21:34 by SamuPiano
Thank you for this wonderful puzzle, sujoyku! Even though I originally took the complicated route, it was very elegant, and going through it again to enjoy the simple route was just as fun!
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Thank you for your kind words, SamuPiano, and thanks again for testing! I am glad that you enjoyed the puzzle.
Kind regards, sujoyku
