{"content":"I'm designing an extremely difficult regex challenge that combines multiple advanced pattern types:\n1. Nested JSON objects with escaped quotes and unicode\n2. IPv6 addresses with compressed sections and mixed formats\n3. Complex nested XML with CDATA sections\n4. Mathematical expressions with superscripts/subscripts\n5. CSS selectors with complex pseudo-classes\n6. Custom format timestamps with microsecond precision\n7. Unicode domain names in URLs with complex query parameters\n8. Quoted strings with escape sequences and unicode\n9. Multi-line SQL with comments\n\nThe challenge includes many near-matches and edge cases that require precise pattern matching with lookaheads/lookbehinds and careful handling of escape sequences.","function_call":{"name":"make_move","arguments":"{\"reasoning\": \"I'm designing an extremely difficult regex challenge that combines multiple advanced pattern types:\\n1. Nested JSON objects with escaped quotes and unicode\\n2. IPv6 addresses with c... (truncated)