XBoard is already highly configurable to the rules it applies (board size, how pieces can move, etc.). This configuration can even be done automatically by an engine. So unless your variant has very unusual rules, chances are that no modification to XBoard is needed at all to play the variant.
If the rules are very unusual, it might be very difficult to program them into XBoard. In that case it would become a question whether the effort is worth it.
In other words: not much can be said about this without knowing the rules of the variant.
H.G.
Op ma., apr. 5, 2021 om 18:15, Kimberly Braunschneider <the7bees@gmail.com> schreef:
Hello!
I am a big chess fan and I like that you are making chess and its variants very easy to play on the computer.
I am requesting that you add a variant to your program.
I have created this variant and it seems very fun.
I believe if you added my variant to your program people would like it a lot.
I have made cardboard and clay pieces for my game but I would like to make my variant available to a lot of people and my friends.
If you are interested in this variant or just want to learn more, please reply to this email and I will reply with a google doc link that explains the game.
Thank you for all that you do!
Respectfully, Riley