Logic Masters Deutschland e.V.

Across Roads (Deconstruction)

(Published on 6. January 2025, 19:55 by Sotehr)


PUZZLE


RULES

Deconstruction Sudoku: There exist nine non-overlapping 3x3 square regions which must be located. Each region contains the digits 1-9 once each, such that no digit repeats in any row or column. Cells outside these regions do not contain digits, but have a value of 0.

German Whisper Line: Values along a green line differ by at least 5.

Palindrome Line: Cells an equal distance from the center of a silver line have equal values.

NOTES
Expected Difficulty: 3.5 stars

This was set for Scojo's Setting Saturday Prompt, this week chosen by the wheel: Deconstruction, Palindrome, and German Whispers.

Many thanks to Memeristor, Malakree, Flinty and knalle83 for testing!

Cracking the Cryptic Feature.

Play Across Roads on SudokuPad.

Solution code: Row 11 digits only, left to right.

Last changed on on 26. May 2025, 05:27

Solved by Malakree, Flinty, palpot, karlmortenlunna, aqjhs, ViKingPrime, roflsalot, gxorgx, cbjenkins, SKORP17, purpl, Snookerfan, Da Letter El, Dentones, erml, Franjo, softie, Elliott810, mnhuik, hildende, ... dustpan, arauwer, Exigus, jinkela114514, Uhu, jzstarburzt, mihau730, Sewerin, NEWS, juggler, zeniko, mcs131313, seriouslyimagiraffe, TitaniaLowe, Llamaths, eap314, GiraffeTheSecond, afineguy
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Comments

on 5. November 2025, 17:49 by eap314
Very easy for a 0-value deconstruction, especially after coming from sudokuvania. I kept forgetting that all cells not in boxes had value 0.

on 25. May 2025, 15:08 by wuc
One very tricky idea. Therefore 4* for me too. But very clever puzzle. Thx.

on 21. May 2025, 03:29 by dumediat
This was absolutely fantastic! I'm amazed at the breadth of logic that you were able to pack into this puzzle. I'm so glad I gave this one a try. :)

on 21. May 2025, 02:10 by Calvinball
I had a feeling I was going to love this puzzle, and that feeling wound up being very correct.

on 21. April 2025, 07:41 by virus_dave
This took me a LONG time and multiple attempts, but i am SO glad i stuck with it. Incredibly rewarding, and i learned a few things about deconstruction logic that i didn't know before.

Thank you!

on 12. January 2025, 20:01 by Voidslime
Wow that a wonderful and challenging puzzle! I was close to giving up but I’m glad i stuck it through

on 8. January 2025, 12:56 by Franjo
Brilliant setting for a beautiful deconstruction puzzle! Thank you very much for creating and sharing this masterpiece.

on 8. January 2025, 09:18 by Christounet
Very nice approachable deconstruction. The value 0 outside regions is a cool twist. Thanks :)

on 7. January 2025, 21:02 by softie
I really loved this. I'm proud of myself for solving it!

on 7. January 2025, 20:45 by Franjo
Brilliant setting for a beautiful deconstruction puzzle! Thank you very much for creating and sharing this masterpiece.

on 7. January 2025, 18:42 by Snookerfan
Beautiful puzzle! Lovely symmetry and powerful interactions of the constraints, very smooth. Thank you

on 7. January 2025, 17:02 by purpl
A great intro puzzle to deconstruction puzzles. I love how the region building interacts with the constraints in such a natural way.

Difficulty:4
Rating:98 %
Solved:112 times
Observed:13 times
ID:000LH1

Puzzle variant New

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Solution code:

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