Yes Codebreaker_93 you may have a point, Emanuel Lasker arguably the all time greatest player is perhaps the most notable example of the connection.
>:)
Ironically, (being a mathematician) Lasker recognized Psychology as a critical aspect of the game.
At the end, mathematicians and computer scientist were able to design chess programs to beat the best humans (they were forced to understand the math-skeleton of chess to do it). But as you should agree, playing against a computer and against a human is a very different kind of game.
I prefer 'Chess is life'. I guess that would include mathematics but it covers all the bases.
A mathematician should be good at Chess, not because of the maths, just because they should be smart enough to play the game.
That applies to a lot of people though. A street smart person should be able to play Chess just as well.