🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPortuguêsSvenskaРусскийالعربيةفارسی한국어中文日本語EntityQ1774662· pop 17· linked from 162 articleslogic puzzlepuzzle deriving from the mathematics field of deductionAvailable in 17 languagesEspañolDeutsch中文日本語РусскийPortuguêsالعربيةArmenianCatalanEsperantoConnectionsLewis CarrollEntitymathematicsEntityCategoriesInformal logicLogic puzzles