Kniha: Origami, Eleusis, and the Soma Cube v anglickom jazyku

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.