Previous Challenges
The Cipher Challenges for Kryptos7: 2017
Click on (sol) for a solution.
Challenge 1 (sol)
Challenge 2 (sol)
Challenge 3 (sol)
A summary of the 2017 results is available.
The Cipher Challenges for Kryptos6: 2016
Click on (sol) for a solution.
Challenge 1 (sol)
Challenge 2 (sol)
Challenge 3 (sol)
A summary of the 2016 results is available.
The Cipher Challenges for Kryptos5: 2015
Click on (sol) for a solution.
Challenge 1 (sol)
Challenge 2 (sol)
Challenge 3 (sol)
A summary of the 2015 results is available.
The Cipher Challenges for Kryptos4: 2014:
Click on (sol) for a solution.
Challenge 1 (sol)
Challenge 2 (sol)
Challenge 3 (sol)
A summary of the 2014 results is available.
The Cipher Challenges for Kryptos3: 2013:
Click on (sol) for a solution.
Challenge 1 (sol)
Challenge 2 (sol)
Challenge 3 (hint) (sol)
A summary of the 2013 results is available.
The Cipher Challenges for Kryptos2: 2012:
Click on (sol) for a solution.
Challenge 1 (sol)
Challenge 2 (sol)
Challenge 3 (sol)
A summary of the 2012 results is available.
The Cipher Challenges for Kryptos1: 2011:
Click on (sol) for a solution.
Challenge 1 (sol)
Challenge 2 (sol)
Challenge 3 (sol)
A summary of the 2011 results is available.
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