Parity Fun 10
(Published on 15. January 2026, 18:05 by galium_odoratum)
Normal Sudoku rules apply.
Parity thermometers: Even and odd digits along a thermo must strictly increase from the bulb, but are completely independent from eachother. E.g. 246813 or 325879 are valid sequences.
X: Digits separated by an X must sum to 10.
Play on SudokuPad
Try out the others of this series:
Parity Fun 1
Parity Fun 2
Parity Fun 3
Parity Fun 4
Parity Fun 5
Parity Fun 6
Parity Fun 7
Parity Fun 8
Parity Fun 9
Solution code: Row 2
Comments
on 19. January 2026, 00:14 by VitP
the thermos are almost completely unrestricted. with only a couple xs beyond that, there's no way this could be a level 2
-It might look intimidating at first glance, but it is actually way more restricted than it seems. The solve path is also very narrow without any bifurcation or "deep" logic. ~galium
on 17. January 2026, 13:18 by annaeinachin
Very fun!
I enjoyed the logic in the thermos that varies from the usual solving path in other thermo sudokus
on 17. January 2026, 02:40 by Allagem
A very satisfying and unique solve thanks to expert usage of an unusual constraint. I especially loved the break-in. Bravo! 10/10 puzzle :)
on 16. January 2026, 21:22 by tomer
Great puzzle! Thanks!
on 16. January 2026, 12:43 by keenbowl
Really nice puzzle, but was really hard for me with my pencil marks in the thermos to not resolve to my usual way of thermo thinking.
on 15. January 2026, 19:58 by blackjackfitz
Huzzah!
