Sure, playing chess needs intelligence, dedication, and good chess players are smarter than an average person. But it’s waaaay exaggerated in movies. I’m a math researcher, and in any movie, my department will be full of chess geniuses. But in reality, only about 10% of them even play chess.
Lol. Just in case someone finds it useful, the math of game theory has very little to do with games.
I remember Crazy Rich Asians was a great offender of this. The main character is a teacher in game theory, which naturally makes her great at any game (which also becomes an important plot point later in the movie).