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.
The person who taught me chess was constantly perplexed by my bizarre tactics. He found it refreshing and interesting. Obviously, I had no idea what I was doing, and I got nuked to oblivion on a regular basis. Maybe he was expecting to see some popular moves, but was only faced with whatever sketchy tactics I could come up with.