poker over the course of 20 days. That whole time, all four players working as a team to try to exploit the AI in any way they could find. In fact, actually, I had lunch with one of the players, just a couple months ago. He said that the thing they found most shocking about the competition is that, at the end of each day, we gave them a log of all the hands that were played and we told them what the bot had on each hand that was played. This is big because in poker, a big part of the game is actually keeping your strategy hidden.