Standard sudoku rules apply: each row, column, and 3x3 box must contain all the digits from 1 to 9.
Cages: digits in cages must not repeat and must sum to the number in the top left corner of the cage, if given.
Whisper-5: adjacent digits along a green line must have a difference of at least 5.
Solution code: Enter the digits in the 3-cell cages from box 1, box 3, box 7, and box 9. Enter the digits from each cage in ascending order. For example, if the cages are [415] (box 1), [382] (box 3), [345] (box 7), [987] (box 9), enter the following: 145238345789