That's GPT-4, not ChatGPT (3.5-turbo I think).
Also, yes you can get correct information by tailoring your prompts, but that isn't the issue. The issue is that some prompts lead to bad results and confusing/incorrect answers. You changed what OP queried by providing the riddle and asking for hints to that riddle, whereas OP asked for a random riddle and then hints to that riddle.