There are may engines for playing these historic variants that you can download and play against. E.g. Fairy-Max, which is included with the WinBoard GUI. For super-human playing strength you could use Fairy-Stockfish under WinBoard. On-line opponents are typically weaker. But you could use Jocly, or the Interactive Diagram.
Playing chess variants against bots?

I actually wondered about being able to play them on chess.com. I'm sorry for not having asked clearly. Still, many thanks at least I can play them on Jocly
I actually wondered about being able to play them on chess.com. I'm sorry for not having asked clearly. Still, many thanks at least I can play them on Jocly
Why not make a second account and practice your experiments against your historic setups with the challenge link? Is that considered "score manipulation"?
https://support.chess.com/article/317-what-counts-as-cheating-on-chess-com
Cheers!

I actually wondered about being able to play them on chess.com. I'm sorry for not having asked clearly. Still, many thanks at least I can play them on Jocly
Why not make a second account and practice your experiments against your historic setups with the challenge link? Is that considered "score manipulation"?
https://support.chess.com/article/317-what-counts-as-cheating-on-chess-com
Cheers!
Thanks for this suggestion but in my case I only wanted to know a way to play against bots. Recently, I crafted myself a four player chess set which when folded can also be used for larger two player variants such as Courier Chess. Hence, opening strategy I can train with that instead of doing it on chess.com.
Hello everyone,
I got very interested in historic chess variants as Shatranj and Courier Chess. I'd like to train against bots like it's possible with regular chess though I can't find anything. Am I wrong or is it not possible to play variants against bots?
Thanks in advance.