Digits surrounding a circle must sum to the number in the circle. Digits may not repeat around a circle.
Empty circles all represent the same sum, which the solver must find.
Normal Sudoku rules apply.
Try it at F-Puzzles.
Solution code: Digits from last (9:th) column, top to bottom.
on 31. December 2024, 12:14 by abadx
ctc link: https://sudokupad.app/gnbmwv1mt9
on 16. December 2022, 15:34 by chain.reader
That was quite interesting.
I went with a pencilmark heavy approach... The solution emerged on it's own, bit by bit.
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