List of Plates ix
Foreword by Douglas Hofstadter xi
Preface xv
PART ONE: THE LOGICAL
1 Esprit de Corps to 13 February 1930 3
2 The Spirit of Truth to 14 April 1936 60
3 New Men to 3 September 1939 141
4 The Relay Race to 10 November 1942 202
BRIDGE PASSAGE to 1 April 1943 305
PART TWO: THE PHYSICAL
5 Running Up to 2 September 1945 325
6 Mercury Delayed to 2 October 1948 394
7 The Greenwood Tree to 7 February 1952 491
8 On the Beach to 7 June 1954 574
Postscript 665
Author's Note 666
Notes 680
Acknowledgements 714
Index 715

A NEW YORK TIMES BESTSELLER
The official book behind the Academy Award-winning film The Imitation Game, starring Benedict Cumberbatch and Keira Knightley
It is only a slight exaggeration to say that the British mathematician Alan Turing (1912-1954) saved the Allies from the Nazis, invented the computer and artificial intelligence, and anticipated gay liberation by decades--all before his suicide at age forty-one. This New York Times-bestselling biography of the founder of computer science, with a new preface by the author that addresses Turing's royal pardon in 2013, is the definitive account of an extraordinary mind and life.
Capturing both the inner and outer drama of Turing's life, Andrew Hodges tells how Turing's revolutionary idea of 1936--the concept of a universal machine--laid the foundation for the modern computer and how Turing brought the idea to practical realization in 1945 with his electronic design. The book also tells how this work was directly related to Turing's leading role in breaking the German Enigma ciphers during World War II, a scientific triumph that was critical to Allied victory in the Atlantic. At the same time, this is the tragic account of a man who, despite his wartime service, was eventually arrested, stripped of his security clearance, and forced to undergo a humiliating treatment program--all for trying to live honestly in a society that defined homosexuality as a crime.
The inspiration for a major motion picture starring Benedict Cumberbatch and Keira Knightley, Alan Turing: The Enigma is a gripping story of mathematics, computers, cryptography, and homosexual persecution.

Andrew Hodges teaches mathematics at the University of Oxford. Douglas Hofstadter is the College of Arts and Sciences Distinguished Professor of Cognitive Science and Comparative Literature at Indiana University Bloomington.