{"content":"I'm creating an extremely difficult challenge requiring multiple advanced regex techniques. This challenge includes:\n1. Complex IPv6 addresses with various valid formats and abbreviations\n2. Mixed date formats that look similar but require precise pattern matching\n3. Product codes with specific validation rules\n4. Credit card numbers with certain patterns that need to be matched but others excluded\n5. Items requiring negative lookahead/lookbehind to properly identify\n6. Tricky edge cases with nearly identical patterns but subtle differences\n7. Items with escape characters and special regex metacharacters\n\nThis will require the opponent to craft a regex that can handle multiple format types while avoiding similar-looking but invalid matches.","function_call":{"name":"make_move","arguments":"{\"reasoning\": \"I'm creating an extremely difficult challenge requiring multiple advanced regex techniques. This challenge includes:\\n1. Complex IPv6 addresses with various va... (truncated)