Origami, Eleusis, and the Soma Cube

For 25 of his 90 years, Martin Gardner wrote 'Mathematical Games and Recreations', a monthly column for Scientific American magazine. These columns have inspired hundreds of thousands of readers to delve more deeply into the large world of mathematics. He has also made significant contributions to magic, philosophy, debunking pseudoscience, and children's literature. He has produced more than 60 books, including many best sellers, most of which are still in print. His Annotated Alice has sold more than a million copies. He continues to write a regular column for the Skeptical Inquirer magazine.

'Martin Gardner's fifteen volumes about Mathematical Games are The Canon - timeless classics that are always worth reading and rereading.' Don Knuth

• 1. The five platonic solids; 2. Tetraflexagons; 3. Henry Dudeney: England's greatest puzzlist; 4. Digital roots; 5. Nine problems; 6. The soma cube; 7. Recreational topology; 8. Phi: the golden ratio; 9. The monkey and the coconuts; 10. Mazes; 11. Recreational logic; 12. Magic squares; 13. James Hugh Riley Shows, Inc.; 14. Nine more problems; 15. Eleusis: the induction game; 16. Origami; 17. Squaring the square; 18. Mechanical puzzles; 19. Probability and ambiguity; 20. The mysterious Dr Matrix.