What does your chess rating say about your overall IQ?

Very little

Actually, the word has had exactly the meaning I ascribe to it since its introduction into the English language about 500 years ago. When I use it in that sense I am not "changing the meaning" just because a particular academic discipline has used it (since about 1890) in a technical sense within its own purview. The OP uses it in a manner that clearly proposes a causational link between the two "variables".

At the highest level in chess, one needs a very strong memory for the memorizing of countless lines and opening variations, combined with strong visualization and spatial awareness. These very same skills are often conducive to performing well on IQ tests (with exceptions), which is often why many top players have been known to possess a high IQ. Outside of the top level of chess play, I doubt there is a strong correlation, as a 1200 rated player is usually much closer to a 2200 in terms of innate ability than the 2200 is to a super GM.

People who don't waste time on chess: 160+ IQ

There are some very good online IQ tests. That test he took was crap though.

He should take another online IQ test and actually take it seriously. I'll probably send him a link to it.

I expect that if your IQ is significantly below average, your chess playing is unlikely to be great.

But there's a huge motivational factor at play.

If you do anything two hours a day, you are likely to be better at it than the person with the world's highest IQ who has never played more than a dozen games. Much of chess, especially as played against time, is recognizing patterns and responding to them. That's what repetition does - it trains you in patterns. It introduces you to new patterns. It trains you where to expect traps and pitfalls.

This is complete nonsense. It's not at all how IQ is measured, nor is chess progression representative of one's IQ.

There are so many factors that contribute the speed of one's progress in chess (motivation, resources, manner of practice, level of opponents, amount of personal feedback/instruction, and so on).

And proper IQ testing involves extensive, structured methodology that goes far beyond some arbitrary metric such as, "Hey, what's your chess rating?"

To distill everything down into two components ("Two hours a day to reach your Elo after one year! This tells you your IQ!") and to claim that this has any sort of merit is ... simply ridiculous.

After playing 15 months on chess.com with substantial number of games, my Elo is 400-500 ish. I don't read about chess, I play when in the train sometimes (with bad wifi), and sometimes more focused. My official IQ test is about 135. Now, what does that tell me about chess and IQ? In my opinion, IQ has only a minor impact on chess Elo. See also this study (although low sample size): https://www.sciencedirect.com/science/article/pii/S0160289606001139

Further, sometimes I get a boost and suddenly rise about 200 points in Elo, sometimes I drop about the same number of points and I have no idea why. However, my IQ remains stable. 
In addition, consider this: More people started playing chess online in the recent years. An Elo of 500 today may not be comparable to one 10 years ago, since elo It measures how well you perform relative to the rest of the pool. The pool has changed.

Was there any reason to resurrect this dumb topic? It was already down in the gutter (where it belongs) for more than a year, abandoned and forgotten, and now you bring it up again. Why?

How did you find it anyway? And again, why?

> What does your chess rating say about your overall IQ?

Nothing in general, if you are good at chess, you are just good at chess

I remember once watching a video that included a top chess player (I want to say one of the Polgar sisters), and other people in other professions such as brain surgeons and comparing how they function in general intelligence-based activities. Anyone know what video I'm thinking of?