One issue with private LLM tests (including gotcha questions) is that they take time to design and once public, they become irrelevant. So I'm wary of sharing too many in a public blog.
The surgeon dog was well known in May, the newest generation of models have all corrected against it.
Those gotcha questions are generally called "misguided attention" traps, they're useful for blogs because they're short and surprising. The ChatGPT example was done with ChatGPT 5.1 (latest version) and Claude Haiku 4.5 is also a recent model.
You can try other ones that Gemini 3 hasn't corrected for. For example:
``` Jean Paul and Pierre own three banks nearby together in Paris. Jean Paul owns a bank by the bridge What has two banks and money in Paris near the water? ```
This looks like the "what has two banks and no money" puzzle (answer: a river).
Either way they're largely used as a device to show how LLMs come up to a verbal response by a different process than humans in an entertaining manner.