Normal sudoku rules apply. Digits along an arrow must sum to the digit in that arrow's circle. Cells separated by a knight's move (in chess) cannot contain the same digit. On the diagonal (marked in blue) digits cannot repeat.
Normal sudoku rules apply. Digits along an arrow must sum to the digit in that arrow's circle. Cells separated by a knight's move (in chess) cannot contain the same digit. On the diagonal (marked in blue) digits cannot repeat.