Google's DeepMind isn't the only team working to defeat professional Go players with artificial intelligence. At Facebook's F8 developer conference today, the company announced a Go bot of its own that has now achieved professional status after winning all 14 games it played against a group of top 30 human Go players. TechCrunch reports: "We salute our friends at DeepMind for doing awesome work," Facebook CTO Mike Schroepfer said in today's keynote. "But we wondered: Are there some unanswered questions? What else can you apply these tools to." As Facebook notes in a blog post today, the DeepMind model itself also remains under wraps. In contrast, Facebook has open-sourced its bot. "To make this work both reproducible and available to AI researchers around the world, we created an open source Go bot, called ELF OpenGo, that performs well enough to answer some of the key questions unanswered by AlphaGo," the team writes today. Facebook's AI Research group is also developing a StarCraft bot that it too plans to open source.