Amazing concept which I enjoyed. There were only a few minor things that were a bit annoing but honestly its fine for a game jam.
A little tricky to get to grips with, but I think theres a lot of potential. Really great stuff for just 48 hours.
Also, I was half expecting the pawn at the start to get promoted to a queen if you let it get all the way to the other side of the room. Maybe you could add that if you continue with this.