Normal sudoku rules apply. A purple line must contain a set of non-repeating consecutive digits (which can appear in any order). Adjacent digits along a green line must differ by at least 5. Cells separated by a black dot must contain digits in a 1:2 ratio (ie one digit must be double the other). In cages, digits must sum to the small clue in the top left corner of the cage. Digits along an arrow must sum to the digit in that arrow’s (grey) circle. Digits along a thermometer must increase from the bulb end. A digit in a black circle must appear in at least one of the four cells surrounding that circle. Digits along a blue line have an equal sum within each 3x3 box the line passes through.