Badminton (Parity mirror sudoku with arrows and diagonal)
(Published on 5. August 2023, 01:12 by Qodec)
Special thanks to zegres not only for the inspiration, but also for kindly putting this in f-puzzles for me.
- Sudoku: Each row, column, and region indicated by thick borders in the grid must contain the digits 1 to 9 once each.
- Parity mirror: Odd-even parity is reflected across the diagonal running NW-SE. (For example: if R6C2 is odd, R2C6 must also be odd.)
- Diagonal: The other diagonal running SW-NE must contain the digits 1 to 9 once each.
- Arrows: Digits along an arrow can repeat and must sum to the digit in its attached circle.
You can play this puzzle online using:
- Penpa+: https://tinyurl.com/ddwu6ttw
- CTC app: https://tinyurl.com/2p8euax9
Hope you'll enjoy!
Solution code: Row 7 and column 7. I.e. the 9 digits in row 7 from left to right, followed by the 9 digits in column 7 from top to bottom, for example: 123456789123456789
Comments
on 9. June 2025, 01:40 by damo_89
Spent way too long tonight solving 5his, should have gone to bed, but each time the situation looked lost there was one small extra deduction to move things along. Brutal but brilliant.
on 23. August 2023, 16:24 by Niverio
So many satisfying deductions in this! (along with an evil one). Had lots of fun with it.
on 19. August 2023, 00:31 by Hydalin
Very clever puzzle, enjoyed it a lot. It got a lot of situations were I thought "now it's falling apart' but it didn't. So it took quite a while, but I really enjoyed it! Thank you, Qodec!
on 15. August 2023, 18:50 by GeorgeTheToad2
Came here from Zegres reverse arrow which I found well constructed. This one was also very well constructed and a lot harder. Thank you for sharing these wonderful creations.
on 14. August 2023, 13:10 by Mr.Menace
A solve full of surprised. Enjoyed solving this a lot! Typical Qodec puzzle where every bit of logic is squeezed out of the constraint!
on 14. August 2023, 04:21 by zegres
Very happy that great setters are playing around with this constraint!
Awesome and (at least for me) very challenging.
on 13. August 2023, 11:42 by Qodec
Fixed Penpa+ link.
on 11. August 2023, 14:19 by samuel1997
Fantastic puzzle!
on 10. August 2023, 23:11 by Piatato
Amazing construction, thanks!
on 10. August 2023, 21:53 by heliopolix
Very fun!
on 10. August 2023, 21:51 by Myxo
Awesome puzzle, really loved it!
on 6. August 2023, 04:01 by CaptZebraCakes
Amazing puzzle. Thanks!
on 5. August 2023, 19:11 by Playmaker6174
Those breakthroughs in the opening sequence were sensational and surely satisfying there, and the solve didn't stop being engaging after that :D
on 5. August 2023, 19:11 by Wessel Strijkstra
fantastic puzzle, very much enjoyed, thanks:)
on 5. August 2023, 17:51 by riffclown
Brilliant as always. Well Set!
on 5. August 2023, 12:49 by glum_hippo
Fun, inspired, and inspiring! A set of traits for which every puzzle should strive.
on 5. August 2023, 08:04 by Elliott810
Brilliant puzzle! Thanks:)
on 5. August 2023, 05:31 by mnasti2
Very cool use of mirror!
