I have read many times that Bobby Fischer had an IQ of 180. Did he really have that high an IQ? Does anyone have proof that he was ever even tested (like a citation from an early book about him)?
Sure, Fischer was an intelligent guy, but I tend to think that someone once made up that number, and it just stuck. Lately, I have seen the same, suspiciously rounded, number given to Kasparov and Carlsen.
A 180 IQ is so rare that most people have probably never met someone, who was officially tested, with such high IQ, and thus, maybe they just assumed it must be super high, and threw out a number. 180 is in the 99.9999712895 percentile. 140 is already considered a genius, and is in the 99.3790320141 percentile.
How can one even tell by just listening to his interviews if he was that intelligent? Is there any legitimate way to prove that claim, or disprove it?