Normal sudoku rules apply. Cells separated by a black dot must contain digits in a 1:2 ratio (ie one digit will be double the other). Digits along an arrow must sum to the digit in that arrow's circle.
Normal sudoku rules apply. Cells separated by a black dot must contain digits in a 1:2 ratio (ie one digit will be double the other). Digits along an arrow must sum to the digit in that arrow's circle.