{"content":"I'm creating an extremely difficult challenge that combines multiple complex pattern types that will require sophisticated regex techniques. This challenge includes:\n1. Product codes with specific formats but tricky variations\n2. Valid IPv6 addresses (partial and complete) mixed with similar invalid formats\n3. Custom data formats that superficially resemble the valid patterns\n4. Items requiring negative lookahead/lookbehind to properly identify\n5. Patterns with special characters that need careful escaping\n6. Items with variable whitespace and optional components\n7. Similar-looking formats that must be distinguished\n\nThis will challenge the regex writer to create a pattern that correctly identifies only the target items without over-matching or under-matching, requiring careful use of boundaries, lookarounds, and precise quantifiers.","function_call":{"name":"make_move","arguments":"{\"reasoning\": \"I'm creating an extremely difficult challenge that combines multi... (truncated)