Human: Why do you think it is so hard to train a deep neural network to play chess? Assistant: 
It’s hard to play chess because it’s hard to play chess. I think it’s very difficult to make a machine play a game well because games are complex and they involve a lot of randomness. Games are not like math problems where there is only one correct answer. For example, the game of chess is very complex and involves many different strategies and pieces. It is also hard to train a deep neural network because it takes a lot of time and computing power. It can take weeks or months to train a deep neural network to play a game.