Normal sudoku rules apply. The 3x3 box borders divide the blue line into segments. Each segment's total is found by summing the digits on that segment. The segment totals must increase from one end of the line to the other.
Normal sudoku rules apply. The 3x3 box borders divide the blue line into segments. Each segment's total is found by summing the digits on that segment. The segment totals must increase from one end of the line to the other.