>Chester: Don't go into that hand blind.
You feel that not-quite-vibration that tells you that someone is attempting to message you through the game's chat system, but somehow doubt you could get away with opening your menu in the middle of the game.
Suddenly you remember the menu. No, not the game's one, the one you ordered food from (which you did end up eating, and oddly enough did in fact taste like chicken). You look at it, and it's gibberish to you. But if you print it on the menu, the people must read it. And if they read this, then maybe...
You ask the waitress to get you a pencil. She responds with surprising promptness, given that a few moments ago she was watching the game with enough attention to make her forget she was still on the job. But regardless.
You write a short simple message. "Can't open menu. Can detect when you message. Can you read this? One message=yes, Two=no."
You recieve a single vibration in confirmation, but more importantly as you scan the faces of the growing crowd, you find confusion in the eyes of those reading over your shoulder. It would appear that your writing is just as incomprehensible to them as theirs is to you.
>Chester: Cheat well.
You smile. You are limited to simple binary questions, but it is amazing what an intelligent mind can garner from such limited resources.
Can you see his cards? Yes.
Does he have any Trumps numberless cards? Yes.
What about Shields? Yes.
Higher than a four? Yes.
And that's really all the information you need. If he plays that Shield, then you are obliged by the rules of the game to play yours. Then he plays his Trump, which regardless of what it is will beat your Rogue. Which would really be a token gesture, as the trumps themselves are valueless in terms of points, but there is your pride to consider.
However, if you can get him to play his trump first...
Well there it is. You've goaded him as best you can, now you just have to sit back and discover if this guy is the sort of player that you pegged him as.