Puccini&#39;s unfinished opera&nbsp;<em>Turandot,&nbsp;</em>based on Carlo Gozzi&#39;s play of the same title - which in turn&nbsp;was inspired by&nbsp;a Persian collection of tales&nbsp;titled&nbsp;<em>The Book of One Thousand and One Days </em>(no, not nights) -&nbsp;tells the story of Princess&nbsp;Turandot, who gives riddles to men seeking her hand in marriage.&nbsp;