Quincunx of quads 2- no logical steps found

Normal 6x6 sudoku rules apply. Place the digits 1-6 once each in every row column and 2x3 box. Cells separated by a king's move (in chess) cannot contain the same digit. Digits in a circle must appear within the 2x2 of cells the circle touches. Digits mat repeat if other rules allow. Clues outside the grid sum the digits along the indicated diagonal digits may repeat if other rules allow. 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). Cells separated by a white dot are consecutive. No negative constraints.