Parity Patrol 101
(Published on 18. October 2025, 15:52 by Killer Joe)
Hello.
Normal Sudoku rules apply.
Digits in a cage sum to the number given in its corner. Digits may not repeat within a cage.
In any row or column, no more than two consecutive digits may have the same parity (i.e., be both odd or both even).
Example:
A sequence such as 2–4–5–7 is valid but 2–4–6–3 is not valid since three even digits appear consecutively.
Have fun.
Solution code: Row 9, first 6 digits.
Comments
on 24. November 2025, 15:49 by bboom
Nice puzzle, and a fun constraint.
You could consider a different wording for the parity restriction for future puzzles: "Any horizontal or vertical set of three adjacent digits should contain at least one even and one odd digit". It is effectively the same, but feels a bit more similar to things like yin-yang shading, and might parse a little easier.
on 21. October 2025, 04:53 by silent_rob
Thanks for the lovely puzzle - I really enjoyed it! This was my first puzzle with this ruleset and it was fun to work out the logic throughout.
on 20. October 2025, 04:58 by JigzSter
Great puzzle! Parity shading definitely pays off in this one!
on 19. October 2025, 21:24 by randomra
Very enjoyable with steady difficulty throughout!
on 19. October 2025, 10:52 by Fra314
Wonderful, full of neat deductions!
on 19. October 2025, 06:08 by puzzlelad
Great puzzle! Thanks Joe
