public void make(Piece[][] board) {
        Piece1 = board[x1][y1];
        
        //System.out.println("Make: " + (Piece1.x == x1 && Piece1.y == y1));
        
        if (board[x2][y2] != null) {
            Piece2 = board[x2][y2];
        }
        board[x2][y2] = board[x1][y1];
        board[x1][y1] = null;        
        
        //System.out.println(x1 + "," + y1 + " to " + x2 + "," + y2);
    }