Anti-knight and parity line in a fog of war adventure

Normal sudoku rules apply. Place the digits 1-9 once each in every row, column and 3x3 box. The grid is covered in fog, a logically correct digit placement will clear the surrounding cells of that digit. No bifurcation necessary and conflict checker is requested to be turned off. Cells separated by a knight's move (in chess) cannot contain the same digit. Adjacent cells along a red line must alternate parity. Digits in a dotted cage without repeat sum to the total given in the top left corner of the cage. Cells separated by a black dot has one digit double the other (1:2 ratio).