Barber Pole
(Published on 29. July 2025, 09:43 by SumDumThum)
Rules:
Normal sudoku rules apply.
Anti-king: Cells that are diagonally adjacent may not contain the same digit.
Cells that are adjacent orthogonally or along a negative diagonal may not differ by a multiple of three.
Links:
Solution code: row 5
Comments
yesterday, 13:43 by DancyPants
Can't figure it out :/
edit: I re-read the rules... Modularity language might have been easier for me to grasp.
on 29. July 2025, 16:57 by Marshal on Mars
Two clarifying questions:
Is the rule saying that digits cannot be multiples of 3 of each other within the restricted cells? E.g. 1:3:9. Or is it saying that their difference (subtraction) cannot be a multiple of three? E.g. 1:4:7.
And is the multiple-of-three rule restricting cells that are adjacent [orthogonally or along a negative diagonal] or is it restricting cells that are [adjacent orthogonally] or (that are) [along a negative diagonal]?
EDIT: Approached it based on the above person mentioning it's meant to be a modulo-3 restriction, and it's very easy once that's clear.
on 29. July 2025, 14:45 by baltoguy
Great fun. all about the break in!
on 29. July 2025, 10:50 by Fisherman
Love both the puzzle and the title.
