I'm creating an extremely difficult challenge by mixing multiple formats (emails, phone numbers in varied formats, tricky URLs, date and time representations, false positives that look similar but shouldn't match, special characters, optional segments, etc.), forcing the solver to use advanced regex features (lookaheads/lookbehinds, alternations, capturing groups, backreferences, and careful escaping). Overly simplistic patterns will either miss real matches or falsely include invalid ones.