Day 5: Chaos Construction
(Published on 5. December 2025, 06:00 by SharpFox)
On day 4 we had a 4×4 Sudoku, therefore it is a 5×5 Sudoku today! Perfect for a chaos construction.
SudokuPad
Rules:
- Place the digits 1-5 into every row, column and region.
- Chaos construction: Divide the grid into 5 regions, each containing 5 orthogonally connected cells. Som region borders are already drawn.
- Clues outside the grid give the number of different regions in that row.
- Arrow tips (inequality sign) point to the lower digit.
A small tip in SudokuPad: The first point in the settings enables the "pen tool". With this you can draw the region borders on your own. Alternatively you can also use colors to mark or distnguish the regions. Good luck!
Solution code: Today it's row 5 (5 digits):
Comments
on 6. December 2025, 16:16 by BKKGarrett
I really enjoyed this one. I enjoyed coloring the regions and then I marked cells that had to be the same using various colored "O" and "X" marks.
on 5. December 2025, 19:17 by dzamie
Found something slightly more useful to color than the regions :P
Definitely the easiest chaos construction puzzle I've solved, and a pretty good introduction to the rule!
on 5. December 2025, 15:19 by detlev007
devenetly best sudoku yet was a lot of fun and in my opinion a bit easier than nr 4 but thats noting bad
on 5. December 2025, 12:53 by Rollo
Toll :-)
on 5. December 2025, 11:23 by Nakedsinglehunter
Spitze :)
on 5. December 2025, 10:25 by marajade
Simple but lovely; I really enjoyed how the deductions unfurled.
on 5. December 2025, 09:03 by Statistica
sehr hübsch
on 5. December 2025, 08:50 by AnnaTh
Klein, aber fein :-)
