Sum Quad Dots
(Published on 8. November 2025, 00:46 by yttrio)
Rules:
Normal Sudoku rules apply.
Circles in the grid are both quadruple clues and sum dots.
Quadruple clues: Digits in the circles must all appear at least once in the four surrounding cells.
Sum dots: Digits in the four cells touching a circle must sum to the 2-digit number in that circle. Digits may repeat in a sum dot if allowed by other rules.
Solution code: Row 7
Comments
on 12. November 2025, 20:12 by dzamie
Huh, surprisingly tricky for how quickly a lot of possibilities get eliminated. It seems to get harder as it goes along, which is uncommon.
on 10. November 2025, 13:59 by VitP
can you count to 10 ? (*)
do you SUDOKU ?
(*) here, counting to 20 is easier.
on 9. November 2025, 17:12 by wuc
Great ruleset nice puzzle. After the break in there was a hard deduction I had to think hard like 3*. Great fun thx.
on 8. November 2025, 20:22 by Franjo
Funny idea, super smooth solving path. Thank you very much for creating and sharing this lovely puzzle.
on 8. November 2025, 07:49 by Snuggles
Very nice and smooth
on 8. November 2025, 06:33 by brandon_bot
Really enjoyable deductions.
