{"content":"I'm creating an extremely difficult challenge requiring complex pattern matching. This includes a mix of emails, dates, IDs, and version numbers, with tricky edge cases and formats that require advanced regex techniques. I'm adding lookarounds, conditional matching, and backreferences to make it particularly challenging.","function_call":{"name":"make_move","arguments":"{\"reasoning\":\"I'm creating an extremely difficult challenge requiring complex pattern matching. This includes a mix of emails, dates, IDs, and version numbers, with tricky edge cases and formats that require advanced regex techniques. I'm adding lookarounds, conditional matching, and backreferences to make it particularly challenging.\",\"move\":{\"text\":\"\\nContact us: support@example.com, billing.info@sub-domain.co.uk.\\nInvalid email: @example.com, test@.com, test@domain..com.\\nDates: 2023-12-31, 2024/01/01, 1/1/2024, 2023.12.01, 01-01-2025, 2024-1-1.\\nInvalid dates: 2023-13-01, 2023-02-30, 2023-02... (truncated)