Published in association with the Turing Trust this challenging collection of more than 120 brain training puzzles will put your problemsolving skills to the test. Follow in the footsteps of famous World War II codebreaker Alan Turing who used impeccable logic to decipher the military codes used by Germany and its allies. These expert puzzles offer a tough but enjoyable challenge with puzzles of many varied types. Puzzles include Hidato Number link Skyscraper Brickwork And more This book i