Zodiac Killer's 51-Year-Old Mystery Cipher Cracked

It took the joint efforts of two computer programmers, an applied mathematician, and a supercomputer.
Loukia Papadopoulos
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An international team of codebreakers has finally solved the Zodiac Killer's most uncrackable cipher after 51 years of efforts and countless tries, reported the San Francisco Chronicle. The 340 cipher named according to its character count was cracked by American computer programmer David Oranchak, Belgian computer programmer Jarl Van Eycke, and Australian applied mathematician Sam Blake.

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Before we go into the process that was finally successful we will first let you know exactly what it said:

I HOPE YOU ARE HAVING LOTS OF FUN IN TRYING TO CATCH ME 
THAT WASNT ME ON THE TV SHOW 
WHICH BRINGS UP A POINT ABOUT ME 
I AM NOT AFRAID OF THE GAS CHAMBER 
BECAUSE IT WILL SEND ME TO PARADICE ALL THE SOONER 
BECAUSE I NOW HAVE ENOUGH SLAVES TO WORK FOR ME 
WHERE EVERYONE ELSE HAS NOTHING WHEN THEY REACH PARADICE 
SO THEY ARE AFRAID OF DEATH 
I AM NOT AFRAID BECAUSE I KNOW THAT MY NEW LIFE IS
LIFE WILL BE AN EASY ONE IN PARADICE DEATH

650,000 simulations

Creepy stuff! The codebreakers began their efforts by running over 650,000 simulations to determine the correct reading direction of the characters. They then figured out the cipher was separated into three pieces.

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That's when they started to read characters diagonally. They first recognized the phrases “Trying to catch me” and “the gas chamber”. But the rest of the words did not make sense until Oranchak and Van Eycke figured out Zodiac had made a mistake and they needed to shift a character over. Finally, the cipher was solved!

The men sent their attempt to the FBI who confirmed that the puzzle was indeed finally solved. Unfortunately, this does not get the agents any closer to catching the notorious and extremely dangerous killer. It may, however, give those looking for him a further look into his disturbed psyche.

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