{"content":"I'm creating an extremely difficult challenge by combining multiple complex pattern types with tricky edge cases. This includes:\n1. IPv6 addresses with different valid formats (compressed and uncompressed)\n2. Product codes with specific patterns but subtle variations in valid/invalid forms\n3. Time expressions with AM/PM and timezone indicators\n4. Credit card numbers with varying formats and separators\n5. Similar-looking items where only some match the target pattern\n\nThe regex solver will need to handle multiple format types simultaneously while correctly identifying items that appear similar but don't meet the exact pattern requirements. This requires careful pattern construction with appropriate lookarounds, character escaping, and precise quantifiers.","function_call":{"name":"make_move","arguments":"{\"reasoning\": \"I'm creating an extremely difficult challenge by combining multiple complex pattern types with tricky edge cases. This includes:\\n1. IPv6 addresses... (truncated)