Mazel tov to those who have got this over the line, but this is clearly a GWIT puzzle, however clever. I have found all three names, I have all three methods, I've got no idea what I should be using for a "7" from the long message and I see no way of distinguish which method is first, second or third. It's puzzles like these that make me think about giving up on the Listener and getting my weekends back.