Becoming a chess grandmaster is an extremely challenging feat that requires a high level of skill, dedication, and strategic thinking. It typically takes many years of intense study, practice, and competition to achieve this title.

However, in general, it is believed and research indicates that top grandmasters usually have very high IQs. A person with average IQ is expected to reach a maximum rating of about 2000 in chess. Strong grandmasters with a rating of around and over 2600 are expected to have an IQ of 160 plus.