Former VP of Chaos Dancing (chaos construction)
(Published on 3. May 2026, 15:04 by sanabas)
Good Luck!
Questions, comments, feedback are always welcome, either here or on the CTC community discord.
The rules:
Chaos Construction Sudoku rules apply: Divide the grid into 9 orthogonally connected regions with 9 cells each. Place the digits 1-9 exactly once into every row, column, and region. It is up to the solver to determine where these regions are.
Chaos construction arrows: Arrows in the grid are attached to circles. If the digit in the circle is x, then the first region border in the direction of the arrow is x cells away. i.e. The first x cells in the direction of the arrow are part of the same region as x, and the x+1th cell is in a different region.
So if r9c7 is a 6, then r9c1-7 are part of the same region. If r9c7 is a 1, then r9c67 are part of the same region, and r9c5 is a different region.
Killer Cages: The digits in a cage sum to the value in the top left. Digits may not repeat in a cage.
Some of my previous puzzles:
Xban
Sum Some Yin Yang
I forget what 8 was for
Solution code: Row 5, left to right, with / for region borders.
Comments
on 6. June 2026, 12:53 by Chenyekai
最后的区域与数字的选择结合在一起，很有趣。规则也很清晰简洁。很不错的数独
on 8. May 2026, 03:15 by MaizeGator
Like some other commenters, I got very stuck in the middle and had a very hard time understanding the clean way through.
on 6. May 2026, 19:32 by Exigus
Wow, that was tricky but very satisfying. Thanks!
on 6. May 2026, 11:05 by vukkarak
Starts fun, gets very difficult in the middle, nice logic
on 5. May 2026, 08:57 by madhupt
Region building was pretty straightforward but the sudoku part was really intricate. Each deduction after a while was very hard fought or maybe I missed some obvious point but great fun! Thanks a lot for sharing.
on 4. May 2026, 21:50 by madhupt
Region building was pretty straightforward but the sudoku part was really intricate. Each deduction after a while was very hard fought or maybe I missed some obvious point but great fun! Thanks a lot for sharing.
on 4. May 2026, 17:36 by Franjo
Thank you very much for creating and sharing this CC-puzzle. My thoughts are the same. After getting all the region borders I found myself in a heavy fight against the cages.
on 3. May 2026, 21:33 by Dcs
95% of the Region building was 2* and then the rest of the puzzle was 4*. Very fun!
on 3. May 2026, 20:19 by cg24
really nice puzzle
in the beginning it flowed really smooth, after finding all the regions I got absolutely stuck, must have missed a clue :)
but overall I had a good time solving it
