Pretty neat idea! Trying to figure out the way through by thinking ahead across the piece switch and enemy moves so you don't get trapped is interesting throughout. You can sometimes get trapped when you blindly enter some rooms with certain pieces, which is a bummer. This is seems to happen mostly with the knight though (bishop trappings are rare and king/queen/rooks seem like they never trap you), so I guess in theory you can try to avoid capturing knights to keep them out of the switch queue and minimize the risk. It's also a little odd that to restart you have to refresh the page. But that's pretty minor.