Tight Fit 4

Normal Sudoku rules apply. Place the digits 1-9 in each row, column and box without repetition. Killer: Digits in cages must sum to the number in the top left corner of the cage. Kropki Pairs: Digits separated by a black dot must be in a 2:1 ratio. Digits separated by a white dot must be consecutive. Region Sum Line: Box borders split blue lines into sections, and the digits on those sections must sum to the same value. Different lines may have different values.