private void getDificulty() throws IOException {
        System.out.print("Select dificulty (easy, medium, hard): ");
        String str = CommandLine.s.next();
        if (str.equalsIgnoreCase("Easy") || str.equalsIgnoreCase("e")) {
            dificulty = 1;
        } else if (str.equalsIgnoreCase("Medium") || str.equalsIgnoreCase("m")) {
            dificulty = 2;
        } else if (str.equalsIgnoreCase("Hard") || str.equalsIgnoreCase("h")) {
            dificulty = 3;
        } else if (str.equalsIgnoreCase("Quit") || str.equalsIgnoreCase("q")) {
            verifyQuit(true);
        } else {
            System.out.print("Invalid entry");
            getDificulty();
        }
    }