Introduction 1. How to Run Prolog 2. Sample Programs -- Descriptions 2.1 Map colorings 2.2 Two factorial definitions 2.3 Towers of Hanoi puzzle 2.4 Loading programs, editing programs 2.5 Negation as failure 2.6 Tree data and relations 2.7 Prolog lists and sequences 2.8 Change for a dollar 2.9 Map coloring redux 2.10 Simple I/O 2.11 Chess queens challenge puzzle 2.12 Finding all answers 2.13 Truth