A Puzzle About Lines
(Published on 1. April 2025, 13:24 by Scojo)
- Normal sudoku rules apply: Place the digits 1-9 once each in every row, column, and 3x3 box.
- Dynamic Fog: The grid is covered in fog. Placing a correct digit in a cell might clear some fog somewhere in the grid.
- German Whispers: Neighboring digits along a green line must have a difference of at least 5.
- Dutch Whispers: Neighboring digits along an orange line must have a difference of at least 4.
- Region Sum Lines: Box borders divide blue lines into segments with equal sums.
- Modular Lines: Every group of 3 cells along a teal line must contain one digit from each modulo 3 group (1, 4, 7), (2, 5, 8), and (3, 6, 9).
- Entropic Lines: Every group of 3 cells along a peach line must contain one digit from each entropic group (1, 2, 3), (4, 5, 6), and (7, 8, 9).
- Renban: Digits do not repeat on a pink line and form a consecutive set of digits in any order.
Solve in SudokuPad
Solution code: Row 5
Comments
on 21. July 2025, 18:12 by glum_hippo
did
on 4. April 2025, 09:58 by Montikulum
Most excellent fun!
on 3. April 2025, 23:56 by dzamie
A very impressive use of lines! Took me most of the puzzle to fill them all out, I think!
on 3. April 2025, 12:01 by Silverbyte
Very fun! Guess there are always people who are not gonna love this kind of puzzle mystery but personally I'm a big fan. Kudos
on 3. April 2025, 03:10 by BorisTheSnake
One of the best puzzles this year! Nice! :)
on 2. April 2025, 14:00 by Cantabrigiensis
Mornington Crescent!
on 2. April 2025, 05:39 by VitP
i thought i was the only "cheater" here. looks like there are many.
spoiler: solve this puzzle before tomorrow comes, because the devs are going to nerf the tool.
on 1. April 2025, 22:23 by rysmyth240
45 minutes for me =)
on 1. April 2025, 19:44 by MSDOS
This puzzle was truly fantastic! I absolutely loved finding the break in, so minimal but very clever. The core constraint of the puzzle was perfectly clued with beautiful logic at every step. Very fun puzzle!
on 1. April 2025, 19:05 by AngusWBA
Very nice logic with the lines ;)
on 1. April 2025, 18:04 by Galc127
@11srube read all of the rules. You might have missed one.
Also, xrrx kind of given a spoiler.
Good luck!
on 1. April 2025, 17:57 by LehanLehan
Nice trolling))))
on 1. April 2025, 17:46 by Galc127
Amazing idea with the X-sums and the final solution.
Thanks for a great puzzle!
on 1. April 2025, 15:50 by rdesmarais2
Puzzle of the day!
on 1. April 2025, 15:42 by Iluvsodah
awesome puzzle, 10/10
on 1. April 2025, 14:28 by Lorena
Thoroughly approve.
on 1. April 2025, 13:44 by ashbrown24
ahhh i get it. wow. ffs!
