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Sam Loyd - Linda Hall Library
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Sam Loyd: Puzzle King | Lilly Library
Modèle mathématique.
Sam Lloyd's Get-Off-the-Earth Puzzle
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Cliff Pickover on Twitter: "Ancient Sam Loyd puzzle. "Show the route from Philadelphia to Erie, passing through all the towns but once." https://t.co/qQJmDjkx8R" / Twitter
The famous trick donkeys: a Sam Loyd puzzle – David Richeson: Division by Zero
Sam Loyds Puzzling Scales Puzzle
MEDIAN Don Steward mathematics teaching: Sam Loyd's dissection puzzle