If 3=T, 4=S, 5=P, 6=H, 7=H ... what is 8? What is the next letter
in the sequence: M, V, E, M, J, S, U, ? Which of the following
words is the odd one out: CHAT, COMMENT, ELF, MANGER, PAIN, POUR?
GCHQ is a top-secret intelligence and security agency which
recruits some of the very brightest minds. Over the years, their
codebreakers have helped keep our country safe, from the Bletchley
Park breakthroughs of WWII to the modern-day threat of cyberattack.
So it comes as no surprise that, even in their time off, the staff
at GCHQ love a good puzzle. Whether they're recruiting new staff or
challenging each other to the toughest Christmas quizzes and
treasure hunts imaginable, puzzles are at the heart of what GCHQ
does. Now they're opening up their archives of decades' worth of
codes, puzzles and challenges for everyone to try. In this book you
will find: - Tips on how to get into the mindset of a codebreaker -
Puzzles ranging in difficulty from easy to brain-bending - A
competition section where we search for Britain's smartest puzzler