GCHQ Puzzle Book II
The brain-busting follow up from the UK's finest code-breakers and puzzle solvers at GCHQ. Now, they are back with a new collection of head-scratching, mind-boggling, brain-benders that will leave readers puzzling over for hours.
If you found yourself stumped with the first book, there will be even more starter puzzles to get those brains going.
Puzzle aficionados needn't worry either as there will also be an 'Even Harder' section to test them to their limits and beyond.
In celebration of GCHQ's centenary in 2019 the puzzles will be structured around vignettes of history from the organisation's archives. These will give exclusive snapshots into the organisation that keeps the security of a nation at its forefront.