![Logic / If and only if / FO / Question / Raymond Smullyan / Knights and Knaves / Logic puzzles / Mathematics / The Hardest Logic Puzzle Ever Logic / If and only if / FO / Question / Raymond Smullyan / Knights and Knaves / Logic puzzles / Mathematics / The Hardest Logic Puzzle Ever](https://www.pdfsearch.io/img/709a7d82f2bdcef5b383cd1bbb2c9d3a.jpg)
| Document Date: 2013-07-04 21:59:22 Open Document File Size: 177,15 KBShare Result on Facebook
City Rome / Dushanbe / / Company La Repubblica / / Country Russia / Italy / / IndustryTerm lengthy solution / valid law / / Person Raymond Smullyan / John McCarthy / George Boolos / / Position author / computer scientist / / PublishedMedium La Repubblica / /
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