Since the file is named "Inheritance," the logic of the puzzle may follow these themes:
While there is no widely known public game or "Alternate Reality Game" (ARG) titled "Inheritance A71.zip" in general search records, the specific naming convention suggests you are likely dealing with a file-based puzzle or an ARG.
In puzzle games, "A71" often refers to a specific reference system:
If this is a specific puzzle you have downloaded, here are the standard steps and potential "clues" based on the name: 1. Identify the Source