Normal sudoku rules apply.
Each red cell contains a different digit.
Digits in red cells are higher than their four orthogonally connected neighbours.
Digits separated by a white dot have a difference of 7.
All possible dots showing a difference of 7 are given.
Solution code: row 8
on 15. September 2022, 18:57 by Ryx
Nice puzzle. Approachable, but still tricky. Nice logic with the negative constraint.
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