Hi Fabian,
I'm Dr Zied Haddad, MD, PhD in anesthesiology and intensive care. i'm now elping fight againt the Covid infected patients. Hope you and your family are safe and healthy.
I Wonder if you can consider making a chess engine playing Musketeer Chess.
Please see some interesting links here:
Rules: https://github.com/fsmosca/musketeer-chess or www.musketeerchess.net
Interesting discussions: https://github.com/ianfab/Musketeer-Stockfish/issues
and http://talkchess.com/forum3/viewtopic.php?f=7&t=72572