Home›Browse›Heesch's problem🌐EnglishEnglishItalianoPortuguêsРусскийالعربيةEntityQ17022147· pop 6· linked from 172 articlesHeesch's problemSign in to saveAlso known as Heesch numberon surrounding polygons by layers of copiesAvailable in 6 languagesРусскийPortuguêsItalianosimpleUkrainianvia Wikidata sitelinks · CC0