Published in association with The Turing Trust, this incredible collection of puzzles allows you to test if you have the range of puzzle-solving abilities requi
** WINNER OF 'STOCKING FILLER OF THE YEAR AWARD' GUARDIAN ** Pit your wits against the people who cracked Enigma in the official puzzle book from Britain's secr
This collection of 140 intriguing and challenging codebreaking puzzles are produced in association with the Bletchley Park Trust. Follow in the footsteps of Wor