Survey Says (Chaos Construction)
(Published on 2. July 2026, 23:41 by DubiousMobius)
A silly puzzle sketch that fell out of exploring this new constraint. I was very conflicted as to whether this should get the sudoku tag, so apologies if you disagree with where I landed. Thanks to aqjhs for testing . Hope you enjoy!
Rules:
Chaos Construction: Create 9 regions of 9 orthogonally connected cells.
Partial Sudoku: The finished grid will contain a digit from 1-9 in each arrow cell. Digits may not repeat in a row, column, or region. Non-arrow cells do not contain digits.
Surveyor Arrows: A double arrow pointing along a cell's edge indicates that that edge is a region border (i.e. the cell on the other side will belong to a different region). Additionally, the digit placed in that cell will count how many cell lengths that region border line measures from one end to the other. The border line may divide more than two regions along its length. In other words, the count only stops when you reach a cell edge that is not a region border edge (or the edge of the grid). The grid edge itself is considered a region border.
Click the puzzle to play!
Solution code: The lengths of the region border lines between columns 1 and 2 from top to bottom, followed by the region border lines between columns 3 and 4 from top to bottom.
Comments
on 10. July 2026, 23:00 by Xazzops
Super fun! I lowkey forgot it was partial sodoku so the "You win" popup on sodokupad jumpscared me when I put in the last arrow digit lol
on 6. July 2026, 16:27 by MaizeGator
Cool constraint. Reminds me a bit of my "loop 12" chaos construction. (Shameless plug: https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=000NFJ)
on 3. July 2026, 06:09 by QuiltyAsCharged
This is cool. It's surprising how these clues lead to a fully defined set of regions. It's not too difficult, but requires some unusual and creative thinking if this is your first encounter with these arrows.
