Dotty Reference (Irregular, Full Column Indexing, Kropki)
(Published on 13. February 2024, 16:39 by Chilly)
I was exploring full indexing and wondered how it would play with an irregular grid. Turns out it can be solved uniquely with a few extra Kropki clues, and this puzzle was the result. Note - I didn't use red colouring for column indexing cells, since all the cells in the grid would be red, and testers found that harder to scan.
The Rules:
- Normal irregular Sudoku rules apply.
- Column Indexing: ALL cells in the grid are column indexing cells. For example, all cells in column 1 determine where the 1 goes their respective rows. So, place the 1 in the column number that corresponds to the digit in the cell. For example, if r2c1 is a 5, then r2c5 must be a 1. Cells in all other columns act similarly; for example, if r3c6 is a 4, then r3c4 must be a 6.
- Kropki pairs: digits separated by a black dot have a 1:2 ratio, meaning one is exactly double the other. Not all dots are necessarily given.
Dotty Reference
by Chilly
Solution code: Row 5
Last changed on on 21. January 2025, 15:56
Solved by SKORP17, mattnburris, Briks, kublai, by81996672, ananth, Fra314, Djokan, pms_headache, ehnvn, marcmees, WarriorKitten, AvonD, alexlovi, DiMono, zrbakhtiar, XeonRisq, Ambrose, Ploctypus, Migu, karen_birgitta, ManuH, MysticMan, appletrapezoid, flaemmchen, jadezki, duckling, lovely, sandmoppe, alisonsky2, PippoForte
Comments
on 22. February 2024, 17:18 by XeonRisq
Fun puzzle, but strange to see the entire grid completely red.. good times. Really liked the grid regions and the interactions they provided.
on 17. February 2024, 15:51 by alexlovi
First time in a really long time I solve an irregular sudoku. This was a lot of fun! Thank you for sharing!
on 14. February 2024, 08:38 by Fra314
Wow, so cool! And with only six dots! Excellent!
on 13. February 2024, 22:07 by Briks
Not too hard, but slow to solve.
