Chess Grandmasters Don't Have a Better Memory Than You

Give a chess grandmaster any memory test, with no piece or board in sight. They’ll perform about as well as any college student. And yet they can memorize entire games at a single glance.

They don’t have a photographic memory.

They don’t have some general gift for retention that other people lack.

They have something else, much more specific and, according to the research, far more trainable than it looks at first glance.

Duffers, strong players, and grandmasters: three different ways of playing

Psychologist Arthur Jensen documents in The g Factor (1998) the research on how chess experts actually think, and he starts by dismantling the most obvious explanation.

• A mediocre player (what’s affectionately called a duffer in the jargon) usually thinks, at most, one move ahead.
• A strong player thinks several moves ahead.
• A grandmaster, however, works in a way that’s qualitatively different from both.

The difference between an amateur and a grandmaster, according to the research Jensen summarizes, isn’t how many moves ahead they plan. It’s something much faster and more automatic: the ability to perceive an entire pattern at a glance on the board.

Exceptional memory, but only within their specialty

Here comes the finding that breaks the “genius with a prodigious memory” intuition.

• Grandmasters memorize entire chess games after seeing the board for just a few seconds, recognizing the whole sequence the way you’d recall a sentence you just read, without consciously attending to each individual letter.
• But on general memory tests, unrelated to chess, their performance matches that of any college student. Their memory capacity isn’t above average.
• What they do have is a long-term memory extraordinarily well stocked with chess rules, strategies, positions, and combinations, which get activated automatically the moment they see a particular arrangement of pieces.

Jensen compares it to reading in your native language: nobody needs to “decode” a familiar word letter by letter, the brain recognizes it whole, at a glance. A grandmaster does the same with the board, after thousands of hours of exposure to that specific language.

The only known road to that level: a lot of practice, and a particular kind of it

If the edge isn’t a superior general memory, where does it come from?

According to the research Jensen documents on exceptional performance in any field (not just chess), the critical difference between an expert and an average person isn’t raw g, it’s the degree of automatization of certain knowledge and skills specific to that field.

• The road to that automatization, Jensen notes, is practice, a lot of it, paired with a conscious effort to improve.
• Few people realize just how much, and how consistently, practice recent studies have found to be an indispensable precursor to outstanding expertise in any discipline.
• This automatization isn’t just “doing the same thing faster”: it’s marked by the simultaneity of different processes and by a form of “pattern thinking” that doesn’t exist in someone still processing information step by step.

The other side of the coin: isolated talent that almost never takes off

There’s an almost uncomfortable fact that Jensen connects directly to this idea: that of so-called idiot savants, people with a stunning talent in one very specific area (calculation, music, drawing) alongside a general IQ well below average.

According to the book, almost none of these cases go on to become a recognized top-tier mathematician, musician, artist, or dancer, and very few, if any, manage to make a living from that special talent.

The conclusion Jensen draws is that an average or above-average level of g seems to be an almost necessary condition for any special talent, however stunning in isolation, to reach its most significant and influential expression within its field.

Put another way: the pattern a grandmaster recognizes at a glance doesn’t replace general intelligence, it needs it as the foundation to build on.

What this finding changes about the idea of “talent”

Putting both pieces together, the picture that emerges is more nuanced than the myth of the born genius:

• Expert skill (in chess or any other field) depends, to a large extent, on automatization built through a lot of practice, not on a general gift for memory.
• Isolated talent, without a general level of g to support it, rarely reaches its fullest expression within its discipline.
• Both ideas coexist without contradiction: the g factor appears to be the foundation on which practice builds expertise, not a substitute for that practice.

What a chess grandmaster ultimately teaches us isn’t that some people are born seeing the board differently. It’s that seeing a board “differently” is something built, move by move, over thousands of hours, on a foundation that was already there from the start.

If you’re curious how this same idea of a “necessary foundation” even shows up in the history of how intelligence itself came to be studied, the 2,000-year-old advice psychology took a century to take seriously explains why something so obvious took so long to become an object of scientific study.

Sources

• Jensen, A. R. (1998). The g Factor: The Science of Mental Ability. Praeger.