Ha, I gave Bing Chat something from Advent of Code and it correctly identified that it came from Advent of Code (without that being anywhere in the prompt). It

Ha, I gave Bing Chat something from Advent of Code and it correctly identified that it came from Advent of Code (without that being anywhere in the prompt). It provided a solution, but given that it identified the source of the question I don't think it was a good test. As you say, maybe changing some values will help.