-Checkered chess: need another FEN element, last non-capturing checkered move (if applicable)
- + need to stack these indicators for alpha beta search
-MarseilleChess: revise bot and test
-Translations (including About page), refresh rules
+Finish https://www.chessvariants.com/mvopponent.dir/dynamo.html
+https://echekk.fr/spip.php?page=article&id_article=599
+And Chakart :)