How computers beat humans at chess

My son turned four yesterday.

A couple of weeks ago, he was with his older cousin, who became really good at chess, and wanted to play against everyone. So my son watched this new game being played in front of him, and he started to be intrigued. More than anything, the threat of saying « Check » seemed to be an exciting perspective.

He has been talking about chess since then, so yesterday, his birthday gift was a small chess board. On the box, it said: « Object of the game: Capture enough of your opponent’s chessmen to take your opponent’s king into a checkmate position. »


AlphaZero is the most advanced computer program to play chess. Instead of being taught chess through exposure of the thousands of games played by the best human chess masters, AlphaZero discovered chess from scratch, playing games against itself.

Today, AlphaZero can beat any human being at chess. To understand where his strategic strength comes from, an analysis of AlphaZero’s gameplay has been made. One major insight came up: it seems like, after doing all its analyses, AlphaZero is not obsessed about capturing opponent’s chessmen as much as the best human chess masters. The common wisdom about chess was that, the more chessmen you capture from your opponent, the easier it will be for you to corner his king into defeat. But, because AlphaZero didn’t learn chess from humans, it didn’t pick up this piece of wisdom. It just focused on the most effective way to win a game, as proven by millions of simulations. And, it turned out, capturing your opponent’s chessmen does not rank as high as human thought.


The fact that my son’s chess box used that incorrect piece of wisdom as a way to describe the purpose of chess is fascinating. It’s the perfect metaphor for so many situations: Offering advice to someone, framing a problem to be solved without hinting at a particular solution, wondering about the long-term damages of short-term thinking, giving a fish vs teaching out to fish vs showing the river, etc.

Two stories

Exposure and need

Walking the talk

Chante, Papa

No magic wand

A backyard of thoughts

Sneaky blind spots

A framework to look at your life

Learning happens in stages

Sous prétexte de profiter du moment

Etude de cas : mes résolutions 2014

Comment tenir une résolution

Pourquoi écrire

L’avantage caché de la liseuse sur la tablette

Pourquoi prendre une résolution

Les moments de vide

3 ways to improve your focus


You become an expert

Do you suffer from mental inertia?

Discovering your unconscious topics of interest

The challenge of delegating

Psychological mecanisms

The more experienced you are

An old problem

Quand l’inspiration survient

Choisir ses batailles

Une autre solution

Trouver son énergie interne


10 choses apprises en 10 ans d’obsession

Y associer des gestes