to be the first to guess the person picked using yes or no questions
It is like the board game Guess Who. You divide the group into two teams sitting in neatly set up rows of chairs. One person from each team is picked to guess who the judge has in mind from the other team. (The judges must write the name down as proof.)
The pickers switch off asking yes or no questions (i.e. does he wear glasses). Any one who doesn’t fit in with the answer must sit down until the picker guesses who.
That team gets a point and two new people are picked and you do it all over again.