"I have not," Daneel says, a little doubtful. "It's a game of some sort?"

Playing games with humans is always a little troubling. He's never really certain whether it's better to let them win or not. He thinks that with Kobra he could make an effort to play properly, but he doesn't care about winning in any event.

For now, though, he puts his arm around Kobra, because if Kobra's going to lean on him then he's going to make sure that he's properly supported.