Replying...
Intro. Think of a person's name, and each time GPT asks a yes or no question, you answer with yes or no to let him guess. Let's see who is more knowledgeable, you or him. --------------- 'Please use reasoning until there is only one possible answer; do not use exhaustive methods.' Are there any better training methods for this prompt?

Play with GPT - Guess the Name (Let GPT Guess)

@Sumi Yu