The Cipher Challenges for Krypto 10: 2020

Challenge 1 [solution]

Challege 2 [solution]

Challenge 3 [solution]

A summary of the 2020 results is available.

The Cipher Challenges for Kryptos9: 2019

Challenge 1 [solution]
Challenge 2 [solution]
Challenge 3 [solution]

A summary of the 2019 results is available.

The Cipher Challenges for Kryptos8: 2018

Challenge 1 [solution]
Challenge 2 [solution]
Challenge 3 [solution]

A summary of the 2018 results is available.

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.