Yin-Yang Arrows
- Shading
- Arrows
The brief
Normal sudoku rules apply.
Digits along an arrow must sum to the value in the attached circle. Digits along arrows may repeat if allowed by other rules.
Shade some cells such that all shaded cells are orthogonally connected and all unshaded cells are orthogonally connected and no 2x2 area may be fully shaded or unshaded.
The digits 7, 8, and 9 are shaded. All circles are shaded and all arrows are unshaded.