9% includes trans women. Otherwise it’s prolly 2%

Right now the highest-ranked woman in chess ranks just below the top 100 players overall.

https://ratings.fide.com/top.phtml?list=men

https://ratings.fide.com/top.phtml?list=women

The numbers in go are similar: women account for 1 of the top 100 and 4 of the top 200; the top-ranked woman is ranked 59th.

https://www.goratings.org/en/

What happens to this market if the rules for the world chess championship are changed to give women an advantage?

@Boklam Realistically there’s no way to do that with dignity

I’ll accept whoever FIDE says is the world champion for purposes of resolving this

@JonathanRay Dignity or not, I think it's reasonably likely to happen ... somewhere in the 5% range, maybe?