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Dear users, we apologize for the long response times of our server. We are currently in the closing stages of developing a completely redesigned site with much better performance, and we are confident to go live this summer. Thanks for your understanding. | |||||
Please send the challenge you created (packed within a single zip file) to the following address:
This email address is being protected from spambots. You need JavaScript enabled to view it.
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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