Present Tens
- Arrows
The brief
- Normal sudoku rules apply, i.e. each row, column, and 3x3 region has to contain the digits from 1 to 9 once each.
- Ten Lines: Each red line can be split into contiguous, non-overlapping segments that sum to exactly 10. If allowed by other rules, digits inside a segment may repeat.
- Arrows: Digits on an arrow sum to the digit in the circle from which the arrow emerges.