UNSOLVED! The History and Mystery of the World's Greatest Ciphers from Ancient Egypt to Online Secret Societies
Go on a mathematical tour of some of the greatest unsolved ciphers of all time. The author examines vexing ciphers yet to be cracked. Bauer lays out the evidence surrounding each cipher, describes the efforts to decipher it, and invites readers to try their hand at puzzles that have stymied so many others. Illus.
Publishing status: Current
Item #: 2994119
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