Bletchley Park Number and Mathematical PuzzlesThis brilliant and challenging collection of 140 number and mathematical puzzles is produced in association with the Bletchley Park Trust. During World War Two, Bletchley Park was the workplace for thousands of people whose job it was to read the encrypted messages of its enemies. Follow in the footsteps of wartime codebreakers and solve these tricky mathematical problems! These puzzles include: Latin squares Kakuro Number crosswords Hidato Sudoku