Normal sudoku rules apply. On a white dot, digits are consecutive; on a black dot, one is double the other. Digits in cells separated by an X sum to 10, digits separated by a V sum to 5. Digits in a cage sum to the value in the corner of the cage.
Normal sudoku rules apply. On a white dot, digits are consecutive; on a black dot, one is double the other. Digits in cells separated by an X sum to 10, digits separated by a V sum to 5. Digits in a cage sum to the value in the corner of the cage.