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Chess Rating ELO and IQ Score CorrelationWritten by Yury MarkushinSaturday, 30 June 2012 18:42Many people are curious if there is a correlation between ones chess rating and IQ score. I did some information research, compiled facts and data and decided that it should be a good time to write an article about IQ score and ELO rating correlation.

If there is a correlation between IQ and ELO it would be also interesting to know how strong it is. Is it true that only people with high IQs can be strong chess players? Do all strong chess players have high IQs? We will try to answer those and other questions throughout this article.

First of all we need to figure out what is IQ. It is an abbreviation for intelligence quotient, which is a numerical score derived from one or more standardizedtests. Most average humans have an IQ score of 100, while 95% of population hasIQ between 70 and 130. But what do these tests actually measure, or at least attempt to measure? That something is called intelligence. Strangely enough thereisn't any good formal definition for this word. Many understand what it means but only few can define it.

According to Wikipedia, intelligence includes the abilities, but not limited to:

1. abstract thinking

2. understanding

3. self-awareness

4. communication

5. reasoning

6. learning

7. having emotional knowledge

8. retaining

9. planning

10. problem solving

Again, this is not a full list, but just a few classical intelligence model characteristics. Which of this 10 abilities are needed to be successful in the gameof chess?

Abstract thinking is definitely something needed for playing chess, the chess pieces can be visualized in terms of their relative pawn value and arrows to represent ability to move.

Understanding is defined as knowing about the object and be able to deal with it. That's also definitely needed in the game of chess. For example, all chess players know that a chess knight (an object) can move L-shaped and jump the pieces(behavior), the only way to stop threatened with a knight piece is to capture the knight (dealing with problem).

Self awareness is the ability to differentiate yourself and others: "I think, therefore I exist, as a thing that thinks." It's not directly correlated to the thinking process in chess, but it's common to all humans and even some animals lik

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e apes and elephants. I'm not sure what the elephant's IQ scores or ELO ratingscould be, but they definitely possess some intelligence, according to this list.

Communication is technically not needed to be good at chess. However, it's veryhard or nearly impossible to become a good chess player without communicating with others who play chess. Since reading a chess book, acquiring knowledge from the chess database or studying an endgame on TheChessWorld.com is a form of visual communication, it is absolutely essential for success at chess. Let me take itback, communication ability is essential to be a strong chess player.

Reasoning is the capacity of humans to make sense of things, establish and verify facts. That's is definitely one of the very important abilities for chess players since they use it for many different things while over the chess board. Chess position analyses is one of the examples when reasoning plays a crucial role at chess.

Learning is acquiring new or modifying existing knowledge or skill. In chess it's actually both. Learning to play openings is acquiring a new knowledge. Sharpening tactics by the means of solving chess problems is modifying existing skill.Ability to learn is absolutely essential for a chess player.

Having emotional knowledge also plays some role in chess. For example, if a person hates losing at chess he we use that negative stimulus and prior emotional knowledge to avoid it in future. He can either learn and play better chess or stop

playing chess to avoid loses.

Retaining is absolutely important for chess. Good memory can give a chess playera huge advantage against another player. Ability to memorize chess games, position, classical endgames and openings is essential for playing high level chess.

Planning is a key of any chess game. Chess is all about planning and strategy. In order to outplay your opponent you need to come up with a plan which is suitable for specific position and also execute it well. Wikipedia defines strategy asplan aimed for gaining (or being prepared to gain) a position of advantage overadversaries or best exploiting emerging possibilities. That's perfectly applicable to chess, since we want to take advantage of all the available resources onthe chess board to actually win the game.

Problem solving is something that a chess player does literally during each movewhile playing chess. He has to make many decisions throughout the game and figure out ways to defend and attack, develop pieces and manage time. Tactics is also 100% problem solving.

As we can see from the list above 9 out of 10 intelligence characteristics are also very important for the game chess. From that we can make a conclusion that in order to be a strong chess player, one needs to possess a higher than averagelevel of intelligence. But does that mean that a good chess player must have a high IQ score? That all depends on how accurately and reliably can IQ test measure one's intellectual abilities. Many scientists debate whether or not an IQ test is actually an accurate enough measure of intelligence since it estimates IQ b

ased on many false assumptions. Some scientists dispute the idea of IQ entirelysince they believe that it is impossible to evaluate one's intelligence based solely on standardized tests.

As of my opinion, I believe that IQ test is not an accurate measure of intelligence, it's only a measure of how well a person can take specific test (a skill which can be learned). Therefore, making a statement that a person with high IQ will necessarily be a strong chess player or a person with high ELO will have high IQ score is not correct.

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Here is the IQ Chart from Levitt's Genius in Chess:

IQ 185 High natural neuro-kinesthetic control; high curiosity drive; anti trivia; in a hurry

IQ 180 New creation

IQ 175 Knows intelligent (and right!)

IQ 165 Formalization; beginnings of self confidence; less hiding

IQ 160 Interest in logic; paranoia; minor creation; recognizes good work; art;music

IQ 150 Trivial formalization

IQ 145 Below this level and often above is everywhere found a slavery to conditioning

Levitt states that the population of IQ distribution is as follows (100 being anaverage IQ):

16% above 1152.3% above 130

0.13% above 1450.003% above 160

Levitt comes up with a equation which relates ELO and IQ score:

ELO ~ (10 x IQ) + 1000

The "~" symbol means "given many years of effort will tend to be equal approximately".

If we plug in 100 IQ (average IQ score) into equation we will get 2000 ELO, meaning that an average person should be rated 2000. However, some chess players (actually most chess players) play their whole life and never reach even 1700, maki

ng 2000 mark fall into top 4-5% of all chess players on planet. So, maybe this '1000' term in the equation needs to be decreased somewhat.

Here is an (estimated) list of IQ scores of famous chess players:

Garry Kasparov Chess player Russia 190Bobby Fischer Chess player USA 187Donald Byrne Chess Player Ireland 170Judith Polgar Chess player Hungary 170Robert Byrne Chess Player Ireland 170

International team of psychologists have attempted to measure IQ score of GarryKasparov and after many tedious tests has concluded Kasparov's IQ to be 135, mak

ing him fall into 'moderately gifted' category. According to the Levitt's equation Kasparov's ELO should be 2350 and not 2850 as it is in reality.

Conclusions:

1. There is a direct correlation between the intelligence level and chess ability

2. IQ tests are not an accurate measure of intelligence level and therefore cannot be accurately compared to ELO

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3. Levitt's formula, correlating IQ to ELO, is not accurate and the '1000' coefficient should be somewhat decreased.