how do you beat a pro at chess???

Make chess pieces out of silly string, and when he's not looking, unravel a piece and beat him senseless.
you have to study...www.chess.com/blog/komodochess13

Convince the pro he should play blindfolded since a lot of GMs can do it too. Maybe his ego is so big that he accepts even tho he cant play like that.

You should try to get good at chess and watch moves always have a rule book on hand and talk with them a lot to get them distracted so the make a bad move r they run out of time I sometimes make people think I speak another language in the chat and then they spend all there time figuring out what I said when really it is jiberish

Most pro-players (Well, to me, "pro" is anything above 1000) ignore my open challenges due to my low score, but occasionally one will accept for god knows what reason. Pity? Easy win for self-esteem? Idk. Anyway, the simple truth is that you usually can't beat them. You can either resign when you start feeling too discouraged, or you can play until they put you in checkmate. I usually do the former, but once I did the latter, and it resulted in the relatively better player taking me under his wing for a bit, so that was nice
I have defeated a few Matsers and an IM on another chess site. A few I won because they lost on time looking for a win and I beat the IM by mate. I find the older the titled player the better chance I have of winning (which is rare). Winning against my first fide master was quite a feeling I can tell you.