July 13th
(Published on 17. December 2022, 20:42 by shinggaming)
Normal sudoku rules apply. Digits have two properties: parity and class. Parity refers to if a digit is even or odd. Digits are separated into the three classes of low (123), middle (456), and high (789). On a blue line, digits in adjacent cells cannot share either of the two properties. For example, a 1 and 2 cannot be adjacent. Cells separated by a VII must sum to 7 and cells separated by an XIII must sum to 13, not all VII/XIIIs are given.
Links:
Solution code: Column 4 and Column 8 (no spaces)
Comments
on 7. February 2024, 23:11 by cascadeshiker
I like this new line constraint. A most enjoyable, but very easy, puzzle.
on 26. April 2023, 17:19 by StefanSch
Gerade und ungerade Zahlen wechseln sich auf der blauen Linie immer ab. Sind die drei Zahlen in den Ecken (R1C9,R9C1,R9C9) dann gerade oder ungerade? Zusammen mit den Summenbedingungen bekommt man schnell erste Zahlen auf dem äußeren Ring, die auch dabei helfen, für den inneren Ring zu entscheiden, welche Zahlen gerade oder ungerade sind.
on 26. April 2023, 17:09 by Deathmic
I must be missing something obvious, as I have no idea how to get anywhere with this one.
Edit: Solved it, of course I missed the obvious facts, thank you StefanSch. Danke!
on 24. December 2022, 16:11 by dodomos
It's not unreasonable to put parity in the front.
on 19. December 2022, 04:53 by chain.reader
Nice one.
Hadn't seen this line restriction before, it worked well.
on 18. December 2022, 19:49 by lalitk0300
Thank you.
