{"content":"Creating an extremely difficult challenge requiring complex pattern recognition across emails, domain-literal addresses, tricky phone numbers with variable spacing and extensions, various date/time formats with different separators, IPv4 (valid vs invalid) and IPv6 addresses, CIDR notations, and advanced URLs (including subdomains, ports, queries, and fragments). Also including an item needing backreferences or negative lookaheads. Unwanted items that look similar but are invalid should not match.","function_call":{"name":"make_move","arguments":"{\n  \"reasoning\": \"Creating an extremely difficult challenge requiring complex pattern recognition across emails, domain-literal addresses, tricky phone numbers with variable spacing and extensions, various date/time formats with different separators, IPv4 (valid vs invalid) and IPv6 addresses, CIDR notations, and advanced URLs (including subdomains, ports, queries, and fragments). Also including an item needing backreferences o... (truncated)