MysteryTwister C3
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Please send the challenge you created (packed within a single zip file) to the following address:

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The zip file should contain the following:

  • a challenge description (text document is sufficient, we take care of the formatting),
  • a cipher text,
  • a solution (solution phrase) to be used for automatic feedback to the participating solvers,
  • a suggestion for the level your challenges should be part of,
  • a suggestion to the maximal number of tries, as well as
  • the name of the author of the challenge (optional).
 
 
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   +++    [21:11 - 18.11.2017] nimroth cynthor solved the Level I challenge 'Affine Codes / Modulo Arithmetic with N / Extended Euclid'    +++    [18:53 - 18.11.2017] nimroth cynthor solved the Level I challenge 'Factorization Cipher — Part 1'    +++    [17:45 - 18.11.2017] nimroth cynthor solved the Level I challenge 'Modified Caesar Cipher'    +++    [16:55 - 18.11.2017] rm solved the Level I challenge 'Number Sequence — Part 9'    +++    [11:40 - 18.11.2017] nimroth cynthor solved the Level I challenge 'Monoalphabetic Substitution'    +++