Common Ground

Twelve rounds. Each round we both look at the same few things, and each of us picks the one we think the other will pick. We can’t talk. The only way to win is to be knowable.

• I choose first, and seal my choice — you’ll see the seal before you move, and the proof after.
• I keep a small model of how you decide. It survives between games, in your browser only.
• There is no losing. There is only how often we meet.