The world chess federation FIDE recently made the incredibly transphobic and mysogynist ruling to exclude trans women from competing in women's tournaments, to strip trans men of pre-transition titles and to subject trans people to a two-year long surveilance process that could lead to forced outings. The German and French chess federation have now decided to ignore this ruling. Source in German (mostly with the info from the image): https://www.queer.de/detail.php?article_id=46744
Because chess players are by and large incredibly obnoxious towards women, so in order to prevent a huge amount of scandals regarding harassment or worse, FIDE decided to just segregate the tournaments to prevent the male players from having the opportunity to be sex pests.