Hello.
Irregular Sudoku rules: fill the grid with digits 1–9 so that each row, column, and region contains all digits once.
The 9 regions are orthogonally connected and form a 180° rotationally symmetric layout.
Cages of the same colour have the same (unknown) total.
Within a cage, digits of the same parity belong to the same region, and digits of opposite parity cannot belong to the same region.
A white dot marks consecutive digits.
A black dot marks a 2:1 ratio.
Have fun.
Solution code: row 9, first 6 digits.
on 19. November 2025, 01:11 by Killer Joe
Improved visibilty on the cages.
on 18. November 2025, 10:12 by VitP
very nice.
hint: if you are doing extensive goodliffing here, you are DOING IT WRONG.
all regions can be fixed before ANY snyder notation is used.
Thanks for your comment. I decided to delete the last part because it was a bit of a spoiler. I tried to spoiler mark it by putting it between these || but that didn't work. Grts Jonesy.
on 17. November 2025, 21:19 by jerbear29
This was absolutely lovely. As CC's go, this is approachable and that is not meant as a criticism. The rules interacted and worked wondrously together. I feel like I solved a magic trick.
Thank you for your wonderfull comment. Much appreciated. Grts Jonesy.
on 17. November 2025, 20:21 by wuc
Great underrated cc puzzle. A bit hard to keep track of all markings when solving. Great setting thx.
on 16. November 2025, 21:55 by nunc
That was beautiful and original!
on 16. November 2025, 15:28 by DanishDynamite
Loved it!
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