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Ace of the Deep
![]() Join Date: Dec 2005
Location: Canada
Posts: 1,124
Downloads: 110
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An interesting BBC article on attempts to break 3 U-boat messages which Bletchley couldn't break at the time and which have remained undeciphered ever since. See http://news.bbc.co.uk/2/hi/technology/4763854.stm and the M4 project blog at http://www.bytereef.org/m4-project-blog.html .
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