Foto: "<a href="https://ccnull.de/foto/black-king-and-queen-chess-pieces-stand-on-a-chessboard-flip-2019/1041598" target="_blank">Black king and Queen chess pieces stand on a chessboard (Flip 2019)</a>" von <a href="https://ccnull.de/fotograf/marco-verch" target="_blank">Marco Verch</a> via <a href="https://ccnull.de" target="_blank">ccnull.de</a> - <a href="https://foto.wuestenigel.com/schwarze-konigin-und-konig-stehen-auf-einem-schachbrett/" target="_blank">Bildquelle</a>, <a href="https://creativecommons.org/licenses/by/2.0/de/" target="_blank">CC-BY 2.0</a>