Counting Sum Dots
(Published on 24. January 2026, 19:11 by Andrewsarchus)
Rules:
- Normal Sudoku rules apply
- Sum Dots:
- Digits on cells touching a Sum Dot sum to the value of that Sum Dot.
- In this puzzle, the values of the Sum Dots must be deduced by the solver.
- In this puzzle, if any Sum Dot has a value of N, then exactly N Sum Dots have a value of N.
- Digits on a Sum Dot may repeat if allowed by other rules.
Play Online:
sudokupad: Counting Sum Dots
Solution code: Row 8
Comments
on 4. February 2026, 18:22 by MathGuy_12
Really really great idea and execution! Thanks for taking part in my prompt!
on 26. January 2026, 23:47 by SirWoezel
Yeah, when I first looked at the puzzle for some reason I thought the sum dot between R7C23 and R8C23 meant R7C3 + R8C2 = R7C2 + R8C3. But it's just the sum of the 4 digits of course.
on 26. January 2026, 22:20 by SirWoezel
Looks interesting. Do the dots that are 'between' 4 cells count only once or twice?
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Each dot is counted only once. :-)
--Andrewsarchus
on 26. January 2026, 10:03 by henrypijames
Looks impenetrable on the outset, but ends up only 3 difficulty for me.
on 25. January 2026, 14:19 by Snookerfan
Marvelous puzzle! Very tricky break-in, at least the way I did it. There must have been an easier way I guess. Thanks
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Thanks for your solve...
I added a link to my solution guide in a hidden comment. :-)
--Andrewsarchus
Thanks for the guide! That was exactly how I did it, so there wasn't an easier way ;)
