Exactly what of substance has DeepMind delivered other than more private information to aid Google's main business, advertising. Google isn't a suitable company to receive ANYONE's medical information, even with informed consent.
"A human player, thus, would be well advised to plan moves ahead of time. The DeepMind agent, because it's capable of such planning too, is also well suited for this game, the researchers suggest."
That applies to Chess, or Go too. No creativity or AI needed.