Скачать или смотреть History's 14 Most Puzzling Uncracked Codes

The CIA has a secret message carved into a sculpture that has stumped its best minds for over 30 years.
Ricky McCormick's 1999 murder remains unsolved, with cryptic notes in his pockets that the FBI couldn't decipher.
The D'Agapeyeff Cipher, created by a Russian-born cryptographer in 1939, has resisted solution for over 80 years, even from its creator.
Famous composer Sir Edward Elgar's "Dorabella Cipher" and the 18th-century Shugborough Inscription are other mysterious codes that have baffled experts.
The Zodiac Killer's unsolved ciphers, sent to taunt police, remain a chilling enigma, a reminder of the puzzles that continue to intrigue and frustrate us.