Cells separated by a blue dot are in the ratio of 1:3 and by a red dot have a difference of 3.
All red dots are given but not all blue dots.
Solve online: Sudokupad.
Solution code: top line
on 18. November 2025, 02:58 by 99%Sneaky
Interesting, and quite smooth *if* you remember the negative constraint :D
on 16. November 2025, 17:27 by googuee
Nice puzzle! Thanks for sharing.
| Difficulty: | ![]() |
| Rating: | 93 % |
| Solved: | 102 times |
| Observed: | 0 times |
| ID: | 000Q5O |