<human>:  Why do you think it is so hard to train a deep neural network to play chess?
<bot>: It’s hard to play chess because it’s hard to play chess. It’s a very complicated game that requires a lot of knowledge of chess rules, strategy, and tactics. The main challenge is that the game of chess is a complex task, which means that the game has many possible outcomes and many different ways to win. The game of chess has a very large state space, which means that the number of possible moves is huge. For example, there are more than 200 million legal chess positions, and the game can last for hundreds of moves.