Follow in the footsteps of Bletchley Park\'s famous Codebreakers with this book of Number & Mathematical Puzzles. During the Second World War, thousands of people worked at Bletchley Park - it was their job to decode the encrypted messages of Britain\'s enemies. Codebreaking is much like puzzle solving, relying on patterns and clues to find solutions. With this handy book of puzzles, you can test your numerical and mathematical skills and find out if you would have had the puzzle solving skills needed to join the wartime Codebreakers.