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Level II Challenges (143)

Page 1 of the challenges in Level II, ordered by date posted (the most recent appear first).

The T52 Sturgeon Challenge — Part 9

[lasry-22] - 3 users already solved this challenge.

The Siemens and Halske T52 was a family of German teleprinter encryption devices used during WW2. This challenge is part of a series of challenges with T52. In this challenge, you need to recover the plaintext from six "in-depth" ciphertexts built with T52a/b. You are also provided with cribs for each message.

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Published on: 2019-08-10 17:31
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#3) Achieved points (Global score) y-m-d - h:m:s

Kurt Gebauer (Yokozuna) 1456 (254983) 2019-08-21 22:34:20
Michael Möller (michaelm) 1209 (221817) 2019-12-27 10:38:15
Snake (snk) 1181 (179397) 2020-03-20 17:08:26
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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'    +++