Top positive review
Get your puzzle geek out.
2 May 2017
The book prepared and released by GCHQ is not one for the light hearted.
If you like the Sun crossword puzzle then don't bother, but if you like complex puzzles which are going to totally absorb you then this is a great addition to anyones collection.
The book comprised of a very large series of questions, puzzles and problems ranging from the easy to the impossible. Thankfully the first couple of sections also include answers in the back, along with helpful little sections of hints and useful information.
To do these puzzles you will need:
A pad of paper (sorry very little space in the book for answers and working out)
plenty of time (the easy questions are 30-60 seconds each, the hardest ones expect to lose a few hours) The hardest questions are multi-layered.
Access to a computer / Internet - Researching is absolutely necessary, puzzles with famous peoples faces is one example.
An almost obsessive eye for details, patterns and general knowledge.
Overall a massive, challenging brain melting book that is seriously impressive and worthwhile having.