He's probably referring to Centaur Chess, where a team of a human assisted by a chess computer (or perhaps more accurately a computer assisted by a human) compe

He's probably referring to Centaur Chess, where a team of a human assisted by a chess computer (or perhaps more accurately a computer assisted by a human) competes against another similar team. https://en.wikipedia.org/wiki/Advanced_Chess https://en.wikipedia.org/wiki/Advanced_Chess