Mostly Empty Boxes
(Published on 13. January 2026, 04:44 by Md88keys)
by Md88keys
Play in Sudokupad
Hello everyone! I left boxes 1, 4, and 7 mostly empty to keep it puzzling until the end. No guessing is required.
Normal sudoku rules apply.
Global Entropy: Every 2x2 box must have at least one low, medium, and high digit (123, 456, 789).
Black dots connect cells with a 2:1 ratio.
White dots connect consecutive cells.
Not all dots are necessarily given.
Solution code: Column 1 top to bottom.
Comments
on 24. January 2026, 03:58 by shteev
Had a bit of fun filling in boxes 2,3,5,6,8 & 9. Disambiguating 1,4 & 7 was hell.
on 13. January 2026, 21:43 by War
I understand the criticism of the mid puzzle, but the break in was nice and the finish was nice. thanks for posting
on 13. January 2026, 10:31 by Snookerfan
Very nice! The start is quite doable and smooth, the midgame is extremely fiendish. I could only get through by too much look ahead for my liking. The finish is pretty. I enjoyed it very much apart from the midgame. Thanks
--thank you
I assume you got stuck with a 1389 quad, which is quite a difficult moment. I think when I solved it the first time I could not see the resolution without extensive testing. I don't know the best way to describe it but I think it is some sort of extended xwing with coloring too that resolves it the quickest.
I probably should have put a few dots in box 4 to avoid that solve path.
