“With six players, it is so much more complicated that you can’t search to the end of the game,” says Brown, who is now part of the Facebook Artificial Intelligence Research (FAIR) group. “The [search] algorithm is the key.”
The achievement is a major landmark for artificial intelligence. A computer program must use more than just brute computation to prevail at poker. It also needs an ability to negotiate under uncertain circumstances, using the principles of game theory.