Thanks for creating this game. The concept is awsome!
I think some of the chess need more balance. Here are some of the through after I play the game:
1. The ability of removing Pawn is op. Not only we can move Rook at the first turn but also we can buy more Rook with the refund.
2. Pawns need the promotion system to be useful.
3. 8 Rook (40 points) at the first line makes an easy win in all difficuties. In many case, it even casuse a one turn kill.
4. A surrender button wloud be great when there is no hope of winning.