Normal sudoku rules apply. Red cells in columns 1, 5 and 9 index (ie give) the column in which the digits 1,5 and 9 respectively appear in their respective row. All possible red cells in columns 1,5 and 9 are given. The digits on each purple line must be a consecutive set of digits (which can be in any order). Adjacent digits on a green line must differ by at least 5.