Knights and Kings Lunch

Normal sudoku rules apply. Place the digits 1-9 once each in every row, column and 3x3 box. Cells separated by a Knight's move (in chess) cannot contain the same digit. Cells separated by a king's move (in chess) cannot contain the same digit. Clues outside the grid sum the digits between the 1 and 9 in their respective row/column. Cells separated by a V sum to 5. Cells separated by a black dot has one digit double the other (1:2 ratio). Digits in a cage sum to 8.