Chapters in this book

1. Frontmatter i
2. Contents ix
3. Foreword xi
4. Preface to the Revised Color Edition xiii
5. Preface to the Original Edition xv
6. 1 The Four-Color Problem 1
7. 2 The Problem Is Posed 12
8. 3 Euler’s Famous Formula 28
9. 4 Cayley Revives the Problem . . . 45
10. 5 . . . and Kempe Solves It 55
11. 6 A Chapter of Accidents 71
12. 7 A Bombshell from Durham 86
13. 8 Crossing the Atlantic 105
14. 9 A New Dawn Breaks 124
15. 10 Success 139
16. 11 Is It a Proof 157
17. Chronology of Events 171
18. Notes and References 175
19. Glossary 187
20. Picture Credits 193
21. Index 195