Apparently he did that one also as a means to inform family in Poland that he was still alive (http://www.poloniachess.pl/najdorf2017/index.php?page=najdor...).

I post-war times, doing something highly newsworthy was pretty much like today making it to HN front page.

Magnus has some youtube videos playing with his back to a series of boards, then after he wins he writes down every move that was played on every board.