CSE Puzzle Challenge - Puzzle 12

Black-hats, Abusing Comms Protocols Since 1790

Francois, My dear brother, this will be the year of our making. Past months have not been kind, yet I maintain such confidence for the coming weeks. I have even acquired a new acquaintance, working as a flag operator for those new semaphore towers. What a system that is; the Chappe brothers are really quite ingenious. You will find enclosed a diagram of some of the signals I saw whilst watching the towers the other day, it is quite relaxing to just watch the towers cycle through all their messages. I hope this letter finds you well. You should make your way to Bordeaux, I would very much like to see you again. Remember, mistakes are key to success. Your Brother,
Joseph Blanc
May 23, 1834




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