One Way Street [Duality]
(Published on 23. October 2024, 23:33 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.
Play on SudokuPad

Solution code: Row 8
Last changed on on 1. November 2024, 15:06
Solved by sujoyku, tiredsudoku, hrhgln, allenz0rz, Steven R, Fra314, Myreque, YoshiKyon, OutOfMyMindBRB, Piff, Platinum, Chlorophyll, ole-1995a, SKORP17, sirkohli, vmirandaa, Alce, Banana, Crul, MontanaPearl, ... jklimp, geronimo92, The Book Wyrm, Zeddecks, OGRussHood, 3inthecorner, OdioGenerisHumani, BlackApolloX, asver, Carolin, PippoForte, yttrio, NEWS, wreckless, Krisonium, QuiltyAsCharged, CheeseCaek
Comments
on 25. October 2025, 21:05 by QuiltyAsCharged
Very cool puzzle but I found the midgame quite difficult! I'm surprised it's only two stars. I wonder if I missed something that would have smoothed it out
on 25. October 2024, 17:04 by Franjo
The neighborhood rule makes the difference, of course. And it’s a nice and mighty one. Thank you very much for creating and sharing this lovely puzzle.
on 25. October 2024, 07:07 by BakBak
That took me a lot longer than I care to admit, but it was a lot of fun nonetheless
on 24. October 2024, 13:44 by Platinum
Very clever
on 24. October 2024, 10:02 by Fra314
This is so cool! Brilliant puzzle!