Challenge "M-138 — Part 3" ¶
By: admin on Sept. 3, 2014, 4:40 p.m.
This is part 3 in a series about the M-138. Part 3 is a ciphertext-only challenge (125 letters).
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Last edited by: admin on Oct. 31, 2021, 2:55 a.m., edited 2 times in total.