An artificial intelligence programme from Open AI, a research firm backed by entrepreneur Elon Musk, has beat a hundreds of players to win a world championship video game contest. As reported by CNN, the Open AI team taught a bot to play Dota 2, an online multi-player battle game where teams compete to take down a structure in an opposing team's home base. Explaining how the bot was trained, Greg Brockman, Open AI co-founder and chief technology officer, said that it "self-trained" until its skill level reached that of the world's best Dota 2 players. "Our bot is trained entirely through self-play. It starts out completely random with no knowledge of the world, and simply plays against a copy of itself -- which means it always has an evenly matched opponent," he said.