The GCHQ Puzzle Book includes a foreword written by the Duchess of Cambridge, whose grandmother was a Bletchley Park code-breaker during the Second World War, and will raise money for Heads Together, the mental health awareness campaign spearheaded by Kate, her husband the Duke of Cambridge and his brother Prince Harry.
The brain-teaser will feature more than 140 pages of codes, puzzles and challenges created by GCHQ’s experts in their spare time.
These will range from “easy” to “mind-bending” and include ciphers and substitution codes, tests of numeracy and literacy, picture and music challenges.
It follows the success of the agency’s Christmas cryptography challenge, which saw some 600,000 people attempt to beat what was dubbed the “hardest puzzle in the world”.
Article source: http://www.huffingtonpost.co.uk/2016/10/20/code-breakers-put-to-the-test-as-gchq-launches-puzzle-book_n_12571540.html?utm_hp_ref=uk-tech&ir=UK+Tech