How is reading a book about chess a sign of intelligence?

What would you do to show that the character is intelligent?
Bear in mind that chances are that the writer is average and so is you.

Don't write big brain characters if you have a small brain.
Dialogue is enough most of the time.

>Don't write big brain characters if you have a small brain.
Fair enough.
>Dialogue is enough most of the time.
You didn't answer my question.

>low IQ take
She's reading a book about chess, that must mean she's smart!
>midwit take
Heh...retarded writers thinking knowing chess makes you smart...what were they thinking?
>non-double digit IQ take
While chess doesn't actually indicate high intelligence, it's widely viewed as such and understanding that this stereotype is being used as a quick way to show the general audience that this character is smart is simply an application of the medium that I should take in stride.

easy Id show her playing chess

If you need to read a book on how to play chess then you're probably not intelligent.

Ok. How exactly?
Because if you just show a sheet with the chess notation it's only gonna be effective as a freeze frame bonus and if you show the game in progress it's gonna be boring for the most viewers if you don't provide an extensive explanation.
Both ideas are not very good.

I would show her creating an only fans to get rich off the simps

not really, most of them are obsolete anyway thanks to engines

Have them perform martial arts