{"content":"I'm creating an extremely difficult challenge that combines multiple advanced regex concepts:\n1. Complex nested structures with balanced delimiters requiring proper escape handling\n2. Tricky date/time formats with optional components and varying separators\n3. Advanced email patterns with quoted local parts containing special characters\n4. ISBN/product codes with specific validation patterns\n5. Nested XML-like tags with attributes\n6. Similar but non-matching patterns to trap naive approaches\n7. Unicode characters and hex codes\n8. Version numbers with complex build identifiers","function_call":{"name":"make_move","arguments":"{\"reasoning\": \"I'm creating an extremely difficult challenge that combines multiple advanced regex concepts:\\n1. Complex nested structures with balanced delimiters requiring proper escape handling\\n2. Tricky date/time formats with optional components and varying separators\\n3. Advanced email patterns with quoted local parts containing speci... (truncated)