Plus Magazine - Singh's "Code Book" Challenge Cracked
pass.maths.org.uk
"The £10,000 prize Singh offered for the winner of this "cipher challenge" has now been won by a team of five Swedish researchers." Article explains the challenge, how it was constructed, and what it took to solve it.
The Cipher Challenge
simonsingh.net
History of a code cracking competition. Challenge details, how it was solved, winners, essays and photo gallery.
Code Book Cipher Challenge Solution Page
codebook.org
Gives solution to Singh's Cipher Challenge. Includes the list of authors, the order of solutions, and the steps to create a team. In HTML, PDF and postscript format.
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