— Famous people & IQ
Garry Kasparov IQ — estimated score & cognitive profile
Garry Kasparov's IQ is estimated at 190. This is a widely-cited estimate based on Garry Kasparov's body of work and historical accounts — not a verified, administered psychometric test score. An IQ of 190 would place a person in the top 0.001% of the population (roughly 1 in 1,013,594,782).
Important note: Most famous-person IQ figures are estimates, retroactive assessments, or based on childhood tests not directly comparable to adult standardised IQ. We present these as historically reported estimates — not verified psychometric measurements.
Kasparov's IQ was reported at 190 in Russian media, though this is difficult to verify. Chess grandmasters, as a group, average around IQ 170 on standardised tests. Kasparov was world chess champion for 15 years and is widely regarded as the greatest chess player of all time.
What IQ 190 means
→Pause. Find out YOUR IQ before you keep reading.An IQ of 190 — if accurate — would place Garry Kasparov in the Profoundly gifted range, scoring higher than an estimated 99.99%+ of the adult population. Scores above 145 occur in roughly 1 in 1,000 people; scores at 190 are far rarer (about 1 in 1,013,594,782).
The limits of IQ estimates for famous people
→Curious how YOU score? 20-min calibrated test.Famous-person IQ estimates circulate widely online but are often unreliable:
- Many historical figures (Einstein, Newton) never took any IQ test — scores are extrapolated from their work, not measured
- Childhood ratio-IQ tests (which divided mental age by chronological age) produce inflated numbers not comparable to adult deviation IQ scores
- Reported scores are often laundered through celebrity media without primary sources
- Very high scores (above 160-170) have measurement precision issues even on the best adult tests — the tail of the distribution is hard to measure accurately
High IQ doesn't guarantee success (and vice versa)
→The numbers above? Find out where YOU land.The most instructive case here is Richard Feynman, who reportedly scored 125 on his high-school IQ test — not exceptional — and went on to win the Nobel Prize in Physics. As Feynman himself noted, the test measures a specific kind of reasoning, not the full spectrum of ability required to make world-changing scientific contributions.
What the highest-IQ people tend to share is:
- Exceptional working memory — holding many variables in mind simultaneously
- Speed of abstract reasoning — recognising patterns and relationships quickly
- Deep focus on topics that interest them
- Willingness to persist through difficult problems
Other famous IQs
→Knowing about IQ ≠ knowing yours. Take the test.- Isaac Newton — estimated IQ 190
- Marie Curie — estimated IQ 185
- Christopher Langan — estimated IQ 195
- James Woods — estimated IQ 180
- Bobby Fischer — estimated IQ 187
Frequently asked about Garry Kasparov's IQ
What was Garry Kasparov's IQ?
Garry Kasparov's IQ is estimated at 190, though this is a retrospective estimate based on their work and accomplishments rather than a verified test result.
Did Garry Kasparov actually take an IQ test?
There is no reliable public record of Garry Kasparov taking a standardized adult IQ test with a verified score. The figure of 190 is an estimate that circulates in popular media.
How rare is an IQ of 190?
An IQ of 190 occurs in roughly 1 in 1,013,594,782 people — the top 0.001% of the population on a standard deviation IQ scale (SD 15).
Is Garry Kasparov's IQ score reliable?
Treat it as suggestive, not definitive. Famous-person IQ figures are often extrapolated from achievements, childhood ratio-IQ tests, or unsourced media claims, none of which are directly comparable to a modern administered adult IQ test.