Normal sudoku rules apply. Each coloured line must contain a complete set of the digits 1 to 9. Digits along an arrow must sum to the digit in that arrow's circle. In cages, digits must sum to the small clue in the top left corner of the cage. Cells in rows, columns or on lines separated by a white dot must contain consecutive digits. The cell with a blue circle must contain an odd digit. The cell with a blue square must contain an even digit.