public void open() {
        System.out.println(WELCOME);
        System.out.println(USE_HELP);
        request = getCommand();
        while (!request.equals(EXIT_COMMAND)) {

            if (request.equals(HELP_COMMAND)) {
                for(int i = 0; i < COUNT_OF_COMMANDS; i++) {
                    System.out.println(COMMANDS_DESCRIPTION[i]);
                }
                request = getCommand();
                continue;
            }

            if (request.equals(START_GAME_WITH_MAN_COMMAND)) {
                System.out.println(REQUEST_FIELD_SIZE);
                game = new Game(getFieldSize());
                game.startWithHuman();
                request = getCommand();
                continue;
            }

            if (request.equals(START_GAME_WITH_COMPUTER_COMMAND)) {
                System.out.println(REQUEST_FIELD_SIZE);
                game = new Game(getFieldSize());
                game.startWithComputer();
                request = getCommand();
                continue;
            }

            if (request.trim().equals(ABOUT_COMMAND)) {
                System.out.println(ABOUT_DEVELOPER);
                request = getCommand();
                continue;
            }
            else {
                System.out.println(ERROR_IN_COMMAND);
                request = getCommand();
                continue;
            }

        }


    }