Mathematical puzzles of Sam Loyd

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• More mathematical puzzles and diversions
  gan: Gardner, Martin
  Cyhoeddwyd: (1963)
• My best mathematical and logic puzzles /
  gan: Gardner, Martin
  Cyhoeddwyd: (1994)
• My best mathematical and logic puzzles /
  gan: Gardner, Martin
  Cyhoeddwyd: (1994)
• My best mathematical and logic puzzles /
  gan: Gardner, Martin
  Cyhoeddwyd: (1994)
• Mathematical puzzles and diversions from Scientific American
  gan: Gardner, Martin
  Cyhoeddwyd: (1964)