> GM Hikaru Nakamura famously took the Mensa online IQ test and scored a very average 102
Nice clickbait. It you watched him take it on stream, you'd know that he was goofing around with his chat and ran out of time b/c he didn't know it was timed.
> The most comprehensive and recent publication I've found related to this question is The relationship between cognitive ability and chess skill: A comprehensive meta-analysis.
> The bottom line is that according to a meta-analysis of numerous studies, there is clearly a correlation between chess skill and cognitive ability, but cognitive ability explains only about 6% of the variance in chess skill (12% if you only consider numerical ability only). There must be other factors as well (e.g., training), some of which could be more important than cognitive ability.
From my personal observations I very much agree with 6%.
Nice clickbait. It you watched him take it on stream, you'd know that he was goofing around with his chat and ran out of time b/c he didn't know it was timed.