Ketchup [Duality]
(Published on 18. October 2024, 16:31 by timotab)
- Normal Sudoku rules apply: place the digits 1 to 9 in every row, column, and box, once each.
- Digits along arrows must sum to the value in the attached circle.
- Additionally, a circle's neighbourhood includes the cell containing the circle, and any cell touching it (on an edge or corner). The digit in the circle is the number of cells in its neighbourhood that have the same odd-even parity as the circled digit.
Solution code: Row 5
Comments
on 21. January 2025, 02:26 by The Book Wyrm
Impressive setting for an easy puzzle with a sparsely clued grid. Neat puzzle.
on 26. October 2024, 02:09 by kross
I restarted the puzzle 3 times before I realized I misunderstood/misremembered the rules. Doh!
on 21. October 2024, 18:09 by timotab
simplified solution code
on 21. October 2024, 15:03 by sujoyku
Fantastic puzzle! Thank you for setting and sharing, timotab!
on 20. October 2024, 04:06 by softie
Fun puzzle. Please use a simpler solution code though!
on 18. October 2024, 23:50 by dingledork
I’d love to see a more challenging puzzle with this ruleset. I really enjoyed this, thank you!
on 18. October 2024, 22:03 by abadx
Nice and straightforward constraint. I am surprised how powerful this is
on 18. October 2024, 17:09 by FischmitFahrrad
Fun constraint & puzzle!
