Disjoint 258 Sudoku
(Published on 8. October 2021, 18:05 by Qodec)
This here is what can happen if you marry disjoint groups with a 159-type constraint (but using columns 2+5+8 instead).
- Normal sudoku rules apply: Each row, column, and region indicated by thick borders in the grid must contain the digits 1 to 9 once each.
- Disjoint groups: Digits cannot appear in the same relative position within different box regions. (E.g. r1c1 and r4c4 cannot contain the same digit.)
- 258: Digits in column 2 indicate the column in which the digit 2 appears in that row (e.g. if r3c2 is a 6, r3c6 is a 2). The same is true of column 5 and the digit 5, and column 8 and the digit 8.
- The inequality sign between r4c7 and r4c8 points towards the smaller digit.
You can play this puzzle online using:
- CTC app: https://tinyurl.com/s25w2unr
- f-puzzles: https://f-puzzles.com/?id=yffwxtnw
Good luck!
Solution code: Rows 2 and 5. I.e. the 9 digits in row 2 from left to right, followed by the 9 digits in row 5 from left to right, for example: 123456789123456789
Comments
on 10. October 2021, 19:33 by zetamath
Very nice, and I very much appreciate you making this so I didn't have to!
on 9. October 2021, 21:28 by marcmees
nice one. thanks.
on 9. October 2021, 16:23 by Annunakki
Wow Qodec! Amazing puzzle as always. Thank you very much!
on 9. October 2021, 13:39 by Playmaker6174
Pretty tricky in the first half and then very smooth in the later half, a sweet treat to enjoy :)
on 9. October 2021, 13:00 by TheRiddler
Really nice!
on 9. October 2021, 11:31 by abed hawila
This puzzle is just brilliant! narrow solving path but very rewarding deductions through the solve, thanks Qodec!
on 9. October 2021, 05:54 by DiMono
The solve path on this is so delicate! Lots of fun.
