Normal sudoku rules apply. In cages, digits must sum to the small clue in the top left corner of the cage. Clues outside the grid give the sum of the digits along the indicated diagonal. These digits may repeat if allowed by other rules. The coloured dominoes are clones and must contain the identical digit in the identical position. (eg r4c1=r1c7=r7c4). A black dot separates cells containing digits in a ratio of 1:2 (ie one digit must be double the other). A white dot separates cells containing consecutive digits. Not all possible dots are given. The purple line contains a set of non-repeating consecutive digits, in any order. On the grey line, the sum of the digits in box 1 is equal to the sum of the digits in box 2.