Mathematical Puzzles and DiversionsMartin Gardner1. Hexaflexagons
2. Magic with a Matrix
3. Nine Problems
4. Ticktacktoe, or Noughts and Crosses
5. Probability Paradoxes
6. The Icosian Game and the Tower of Hanoi
7. Curious Topological Models
8. The Game of Hex
9. Sam Loyd: America's Greatist Puzzlist
10. Mathematical Card Tricks
11. Memorizing Numbers
12. Nine More Problems
13. Polyominoes
14. Fallacies
15. Nim and Tac Tix
16. Left or Right?
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