Table of contents : Cover Preface Epigraph Contents 1. Hints for Solving Puzzles 2. Some Domino Puzzles 3. The Game of Noughts and Crosses 4. Number Systems 5. Some Puzzles Related to Number Systems 6. Games with Piles of Matches 7. Enumeration of Possibilities and the Determination of Probabilities 8. Some Applications of the Theory of Probability 9. Evaluation of Contingencies and Mean Values 10. Some Games of Encirclement 11. Sliding-Movement Puzzles 12. Subtraction Games 13. Puzzles with Some Mathematical Aspects 14. Puzzles of Assorted Types 15. Puzzles in Mechanics Catalog of Selected Dover Books Back Cover