thats pretty impossible
pure stockfish might cuz it has less nural but prob not nnue maybe a relearn nue but im not sure its hard
ALSO for variants like bughouse and crazy house its not very possible, especially for bughouse, 2 people is kinda u know, cuz the bots have to choose to stall or not or etc and place, chaturanga could be possible and actually but they would need the stockfish company to stop working on stockfish 14 tempowarily and it takes a lot of money
there is no engine that can handle it but u need to relearn or reprogram
u need new servers too so its super costly
will engine analysis ever be available for variants on chess.com? i feel like it could really help people better enjoy variants like chaturanga. btw, does an engine that can handle customized rules even exist? for example i'd really like an engine to analyze chaturanga (shatranj) matches. thanks in advance