Arrow Sudoku
Digits on an arrow must sum to the digit in the circle
Arrow Sudoku is fully playable. Choose a difficulty and start solving.
The digit in each circle equals the total of the cells its arrow passes through. Since a circle tops out at 9, shafts are starved toward small digits, and one-cell arrows hand you free placements. Arithmetic-flavoured and noticeably tougher than its difficulty label suggests.
For the complete rules, worked examples and solving techniques, read the full How to Play Arrow Sudoku guide.
Like all Sudoku variants, Arrow Sudoku builds on the classic 9×9 foundation. Every row, column, and 3×3 box must contain each digit from 1 to 9 exactly once. The variant constraint is added on top of these standard rules, never replacing them.
If you're new to Sudoku, start by learning the basic rules and techniques before attempting variants.
Techniques Useful for This Variant
| Technique | How it applies |
|---|---|
| Pencil Marks / Notes | Essential for tracking candidates alongside the variant constraint |
| Obvious Singles | Cells narrowed to one candidate by the combined constraints |
| Hidden Singles | Digits with only one valid cell in a unit after variant elimination |
| Pairs and Triples | Locked candidates exposed by the additional constraint |