Normal sudoku rules apply. Box borders divide each line into segments with the same sum. Digits in a cage sum to the number in the top left corner of that cage. One digit is double the other in cells separated by a black dot.
Normal sudoku rules apply. Box borders divide each line into segments with the same sum. Digits in a cage sum to the number in the top left corner of that cage. One digit is double the other in cells separated by a black dot.