Prime Chronology
(Published on 29. November 2022, 22:51 by kinnison)
Rules:
- Standard Sudoku rules apply
- Orthogonally connected digits may not be consecutive
- Digits separated by a white dot differ by the number in the dot
- Digits separated by a black dot are in the ratio of one to the number in the dot
Grid:
Alternative locations to play:
If you prefer to play without global constraints, here's a slightly tweaked puzzle with the same solution but with some more dots instead:
Solution code: Column two read from top to bottom, then column seven read from bottom to top
Comments
on 3. December 2022, 20:50 by chain.reader
lol @ reverse order code
on 3. December 2022, 16:18 by cbattles
First, I missed the negative constraint. Couldn't see how you got a unique solution. Then, the bottom to top order in the solution code killed me. So once I read the rules for both the puzzle and the solution code, it all worked beautifully. Nice puzzle with a good solve path. Thank you for setting.
on 3. December 2022, 10:53 by kinnison
I've added an alternative grid with the same solution but no negative constraint
on 30. November 2022, 12:22 by sujoyku
Thank you for the nice approachable puzzle, kinnison! This is definitely a good introduction to the rule set.
on 30. November 2022, 07:21 by kinnison
Hi sacklunch - that's odd, the sudokupad link definitely has the right solution embedded into it, perhaps you accidentally transposed some digits in your solve which didn't affect the code for here?
on 30. November 2022, 07:20 by kinnison
Hi Scatterbrain - yes, the puzzle is deliberately slightly overclued to reduce the difficulty so that I can use this as an introductory puzzle for some colleagues of mine.
on 30. November 2022, 01:23 by sacklunch
Sudokupad reports that my solution was incorrect, but the solution code worked here on LMD.
on 30. November 2022, 00:07 by ScatterBrain
Black dot 2 in box 1 is not needed.
Thanks for the puzzle.
