Very original idea! This seems like it could be a very good game to play with some friends.
I like how (obviously) speed is a key factor in beating your opponent especially when you need to plan ahead quickly, but that normal chess strategy still applies for blocking and creating plays.
Some issues may arise for balancing, like the queen being able to move around very quickly and possibly making the game just who can move faster, but maybe with some modified rules you could prevent this.
Overall a unique idea that has really good 1v1 and party potential!