Normal sudoku rules apply.
Gray Kropkis: Digits separated by a gray kropki dot are either in a 1:2 ratio or consecutive (or both). It is up to the solver to determine what each dot represents. All such dots are given.
Fog of War: The grid is partially covered in fog. Correctly placing digits will clear the fog around that cell. No guessing is required.
Solution code: Row 1
on 5. July 2024, 21:20 by ViKingPrime
Great use of ambiguity.
on 26. June 2024, 00:44 by Ragna
Fun puzzle! I like the negativ constraint. Thank you for sharing. :-)
on 25. June 2024, 13:44 by sanabas
A couple of tricky steps, and a couple of steps where I stared blankly for 5 minutes before noticing a simple pencil mark I could erase. Good fun.
on 25. June 2024, 13:31 by fractalminding
Those 3 hours were wonderful. It was interesting to solve. Thank you.
on 24. June 2024, 22:42 by Fool on Hill
Saw this in CTC testing. Amazed that it solves. A few tight spots near the beginning, and some unexpected digits quite a way into the solve until it eases up a bit.