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![Zodiac killer code cracked by Australian mathematician Sam Blake more than 50 years after first murder - ABC News Zodiac killer code cracked by Australian mathematician Sam Blake more than 50 years after first murder - ABC News](https://i.ytimg.com/vi/-1oQLPRE21o/maxresdefault.jpg)
Zodiac killer code cracked by Australian mathematician Sam Blake more than 50 years after first murder - ABC News
San Francisco Chronicle - November 1969: The "340 Cipher" presumably sent by the Zodiac killer has never been deciphered. Follow Instagram.com/sfchronicle_vault to see classic photos from our archive every day. | Facebook
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Zodiac Killer's Infamous Cypher Decoded More Than 50 Years After It Was Sent to Journalists | Inside Edition
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