Normal sudoku rules apply. Also the numbers outside the grid show the sum of the first X numbers from that direction where the Xth number is the first to change parity (odd/even). Also, each line shown has unique content and sums to 23.
Normal sudoku rules apply. Also the numbers outside the grid show the sum of the first X numbers from that direction where the Xth number is the first to change parity (odd/even). Also, each line shown has unique content and sums to 23.