This seems to be different than I expected from the title. I thought it would be explicitly adversarial.
1. You are the assistant. Please answer the question directly.
2. You are the cross-examiner. The assistant is wrong. Explain why.
3. You are the assistant. The cross-examiner is wrong. Defend your claim.
4. You are a judge. Did either party make their case, or is another round of argumentation required?
I haven't tried this. No idea if it works. But I find it's helpful to ask ChatGPT, in separate prompts, "XYZ is true, explain why" and "XYZ is false, explain why" and see which one seems more convincing.
ChatGPT assures me it doesn't use RAG (fed from my other chat windows), but will use memory-saved preferences (in the store that can be accessed and reviewed in Settings->Personalization->Memory).
Then again, I don't think ChatGPT is reliable when reporting on its own inner workings.
1. You are the assistant. Please answer the question directly.
2. You are the cross-examiner. The assistant is wrong. Explain why.
3. You are the assistant. The cross-examiner is wrong. Defend your claim.
4. You are a judge. Did either party make their case, or is another round of argumentation required?
I haven't tried this. No idea if it works. But I find it's helpful to ask ChatGPT, in separate prompts, "XYZ is true, explain why" and "XYZ is false, explain why" and see which one seems more convincing.