Normal sudoku rules apply. Lines act both as Arrows, so that numbers on a line, including the blue circle, sum to the number in the orange circle, and as Between Lines, so any number on a line is between the numbers in the connected circles.
Normal sudoku rules apply. Lines act both as Arrows, so that numbers on a line, including the blue circle, sum to the number in the orange circle, and as Between Lines, so any number on a line is between the numbers in the connected circles.