Normal sudoku rules apply. On purple lines, digits an equal distance from the centre of the line must sum to the digit at the centre. The centre of the line is marked with a dot. On blue lines, each set of 3 digits sums to a multiple of 5.
Normal sudoku rules apply. On purple lines, digits an equal distance from the centre of the line must sum to the digit at the centre. The centre of the line is marked with a dot. On blue lines, each set of 3 digits sums to a multiple of 5.