You can overcome this with prompt engineering. “If a player tries to do something not strictly within the rules of <insert game>, then you must inform me that

You can overcome this with prompt engineering. “If a player tries to do something not strictly within the rules of <insert game>, then you must inform me that it is an invalid move and not accept it” GPT appears to be slightly tuned to default to “yes and” in these ‘creative’ situations by default rather than “block/deny”. IMO lots of things where people don’t think GPT can do something end up being possible with basic prompt engineering. Usually people go too-short and too-non-specific on the prompt.