{"content":"I'm creating an extremely difficult challenge that mixes multiple complex patterns in one text sample. This sample includes advanced email formats (with plus signs, dots, and hyphens in subdomains), international phone numbers with optional parentheses and varied separators, multiple date formats (ISO, European, and US styles) including a leap day date, and product codes that require strict format and symmetry (with the last block as the reverse of the first). Additionally, the text sample is interleaved with similar-looking noise that should not match. This forces regex experts to use advanced grouping, alternation, and possibly lookahead/lookbehind to correctly capture only the target items.","function_call":{"name":"make_move","arguments":"{\"reasoning\": \"I'm creating an extremely difficult challenge that mixes multiple complex patterns in one text sample. This sample includes advanced email formats (with plus signs, dots, and hyphens in subdomains), international phon... (truncated)