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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   +++    [16:06 - 14.07.2020] cypherz78 solved the Level I challenge 'Number Sequence — Part 3'    +++    [10:02 - 14.07.2020] cypherz78 solved the Level I challenge 'Number Sequence — Part 2'    +++    [09:43 - 14.07.2020] cypherz78 solved the Level I challenge 'Number Sequence'    +++    [01:00 - 14.07.2020] Glorfindel solved the Level II challenge 'Letter to the Templars — Part 3'    +++    [16:19 - 13.07.2020] vexilla72 solved the Level III challenge 'RSA Factoring Challenge: RSA-250'    +++