Probably is higher than 170, but I will search in Google
What's is Magnus Carlsen's IQ?
I would speculate... 130 - 150
He's not so much "intelligent" as having a very good memory.
He's also quite immature for a 24 year old.
I read online that Kasparov's IQ is around 190.
For any fictions readers out there, "The Queen's Gambit" by Walter Tevis is one of my favorite books; it gives you an inside look at a great chess player's mind. For fans of old-time movies, Tevis also wrote "The Hustler".
I realize this isn't perfect science but, it is quite hard to ignore:
This speaks for itself, you should notice an interesting correlation to the one below it:
I chose this set of stats because it best characterizes the behavior of the tactics trainer's timer.
I lol'd. If I put up a graph of the time it takes people to poop, it would likely have the same binomial distribution. Would you then conclude that pooping times and chess prowess were linked? Durrrrrrrr........

Why wouldn't IQ correlate with chess which is supposed to be a thinking game (in particular memory recall, judgment, and calculation)? It would be like saying powerlifting doesn't correlate with physical strength.
It is correlated, however not as strong correlated as people (in this topic) want it to be.
I also get my fair share of laughs with all these internet websites stating various IQs of famous people and/or chess players... Remember: if it's on the internet, it must be true!

Here is a link to the doctoral dissertation of Roy Roring submitted in 2008.
Interesting observations , including one that some chess masters have IQs lower than the general population. Pages 4 - 7 discuss IQ and chess.
Kasparov's IQ is given as 123 at the peak of his career.
Review of Expert Chess Performance
Interesting question. I think having good spatial ability would be an enormous asset in chess. I've just started chess and am doing well enough, but the "visualize the chess board" problems leave me stumped.