Stingray (Odd) - Numbered rooms+Parity lines Sudoku
(Published on 11. January 2023, 23:02 by Qodec)
This puzzle is part of a duo. I'll decide later if I'm going to publish its counterpart Stingray (Even) on here as well.
- Normal sudoku rules apply: Each row, column, and region indicated by thick borders in the grid must contain the digits 1 to 9 once each.
- Numbered rooms: Clues outside the grid indicate the digit which has to be placed in the Nth cell in the corresponding direction, where N is the digit placed in the first cell in that direction. Example: if r9c9 is a 2, then because of the 6 clue the second cell counting from the east to the west in row 9, r9c8, is a 6.
- Parity lines: Adjacent digits along each line must have opposite parity, i.e. one of them must be even, the other odd.
You can play this puzzle online using:
- CTC app (Sudokupad): https://tinyurl.com/4f7284n8
- f-puzzles: https://f-puzzles.com/?id=2kdb9pmz
Solution code: Row 8. I.e. the 9 digits in row 8 from left to right, for example: 123456789
Comments
on 14. October 2024, 21:04 by StephenR
That was very tough! Possibly I missed something as I got stuck in the middle for ages.
on 15. September 2024, 13:55 by Bankey
Tough but great fun. Thanks, @ Qodec :).
on 18. January 2023, 16:45 by Playmaker6174
Super satisfying and engaging puzzle! I really like when certain beautiful patterns played out like that ;)
on 16. January 2023, 16:50 by Samish
Very clever puzzle, it unfolds really beautifully
on 14. January 2023, 05:48 by GavinGuile
That was hard. Great puzzle!
on 13. January 2023, 20:21 by Snookerfan
Amazing puzzle! Thank you
on 13. January 2023, 16:12 by Kabuki73
Beautiful logic and solution path! Thanks for setting!
on 12. January 2023, 15:13 by argl
at the upper limit of my abilities. awesome puzzle, thanks
on 12. January 2023, 09:48 by Qodec
Fixed solution code description. Thanks marcmees for catching that!
on 12. January 2023, 09:43 by marcmees
nice but confusing solution code ... the 9 digits in row 1 from left to right ??? -> row 8 from C1 to C9.
on 12. January 2023, 08:36 by Elliott810
Absolutely brilliant construction (and pretty hard)! Thanks:)
on 12. January 2023, 04:04 by Bellsita
I loved that puzzle so much! Fun interactions and logic!!
on 12. January 2023, 00:10 by Piatato
Impressive construction! Lots of very elegant logic :-)
