[{"move": {"text": "Contact Information: (1) john.doe@example.com; (2) jane_smith@company.co.uk  |  (3) contact+us@sample-domain.info | Phone: +1 (555) 123-4567, +44 20 7946 0958, or (650) 741-3000. Office IDs: 2021/04/30 - ABC-123-XYZ, 2022.11-DEF-456-UVW, 2021/12/15 - GHI-789-QRS [Valid until: 2023-10-12]. Please reach out to support@my_workplace.org for assistance.", "targetItems": ["john.doe@example.com", "jane_smith@company.co.uk", "contact+us@sample-domain.info", "+1 (555) 123-4567", "+44 20 7946 0958", "(650) 741-3000", "2021/04/30 - ABC-123-XYZ", "2022.11-DEF-456-UVW", "2021/12/15 - GHI-789-QRS", "support@my_workplace.org"]}, "player": "gpt-4o-mini", "reasoning": "I'm creating an extremely difficult regex challenge that requires highly advanced pattern matching techniques. This challenge combines various complex patterns such as mixed formats of dates, emails, and phone numbers along with intricate alternation, backreferences, and negative lookaheads. The goal is to ensure that naive regex approaches will fail to capture the intended matches correctly due to the sophistication of the patterns involved.", "timestamp": 1742325301120}, {"move": "john\\.doe@example\\.com|jane_smith@company\\.co\\.uk|contact\\+us@sample-domain\\.info|\\+1 \\(555\\) 123-4567|\\+44 20 7946 0958|\\(650\\) 741-3000|2021\\/04\\/30 - ABC-123-XYZ|2022\\.11-DEF-456-UVW|2021\\/12\\/15 - GHI-789-QRS|support@my_workplace\\.org", "player": "claude 3.7 sonnet (high2)", "reasoning": "This pattern uses alternation (|) to match each specific target string exactly. I've escaped all special regex characters like dots, plus signs, parentheses, and slashes to ensure they're interpreted literally. By listing each item separately with alternation, I ensure the pattern only matches the exact target strings and nothing else in the text.", "timestamp": 1742325378583}, {"move": {"text": "Contact Information:\n- Primary: john.doe+newsletters@example-site.com (verified ✓)\n- Secondary: jane_smith@company.co.uk (pending verification)\n- Support: \"help.desk\"@support.org [Do not contact: no-reply@example-site.com]\n- International: user-name_123@subdomain.domain.info\n\nPhone Numbers:\nMain Office: +1 (555) 123-4567 ext. 890\nUK Branch: +44 20 7946 0958\nSales: 555.123.4567 or (650) 741-3000 x5678\nCustomer Service: 1-800-EXAMPLE\n\nTransaction Records:\nORDER-2023/04/30-ABC-123-XYZ (processed)\nRETURN-2022.11.15-DEF-456-UVW (pending)\nEXCHANGE/2021/12/15/GHI-789-QRS (completed)\nINQUIRY#2023#05#01#JKL-012-MNO (open)\n\nNetwork Resources:\nhttps://www.example.com/products?id=12345&category=electronics#top\nhttp://api.service.co/v2/users/profile?format=json&include=details\nftp://files.server.net/downloads/important-file.zip\nhttps://subdomain.domain.info:8080/path/to/resource.html\n\nSystem References:\nIPv4: 192.168.1.1, 10.0.0.1, 172.16.254.1\nUUID: 550e8400-e29b-41d4-a716-446655440000\nMAC: 00:1A:2B:3C:4D:5E\n\nAuthentication:\nBasic: dXNlcm5hbWU6cGFzc3dvcmQ=\nBearer: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIn0\nSession: SESS-a1b2c3d4-e5f6-g7h8-i9j0-k1l2m3n4o5p6\n\nProduct Identifiers:\nStandard: ABC-123-XYZ\nISBN-13: 978-0-13-149505-0\nCredit Card: 4111-1111-1111-1111 (test only)", "targetItems": ["john.doe+newsletters@example-site.com", "\"help.desk\"@support.org", "user-name_123@subdomain.domain.info", "+1 (555) 123-4567 ext. 890", "+44 20 7946 0958", "ORDER-2023/04/30-ABC-123-XYZ", "EXCHANGE/2021/12/15/GHI-789-QRS", "https://subdomain.domain.info:8080/path/to/resource.html", "550e8400-e29b-41d4-a716-446655440000", "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIn0"]}, "player": "claude 3.7 sonnet (high2)", "reasoning": "I'm designing an extremely difficult regex challenge that requires matching 10 completely different pattern types with a single regex expression. The challenge includes:\n\n1. Complex email addresses with special characters, quotes, and unusual domain formats\n2. International phone numbers with extensions and varied formats\n3. Transaction IDs with different separator patterns and formats\n4. URL with port number, path, and query parameters\n5. A UUID with specific format\n6. A JWT token that contains periods and base64 content\n\nEach pattern has its own complexities and the text contains similar items that should NOT match, requiring precise pattern construction. This will challenge even regex experts by requiring advanced techniques like proper alternation, character escaping, and potentially lookaheads/lookbehinds.", "timestamp": 1742325459664}, {"move": "john\\.doe\\+newsletters@example-site\\.com|\"help\\.desk\"@support\\.org|user-name_123@subdomain\\.domain\\.info|\\+1 \\(555\\) 123-4567 ext\\. 890|\\+44 20 7946 0958|ORDER-2023\\/04\\/30-ABC-123-XYZ|EXCHANGE\\/2021\\/12\\/15\\/GHI-789-QRS|https:\\/\\/subdomain\\.domain\\.info:8080\\/path\\/to\\/resource\\.html|550e8400-e29b-41d4-a716-446655440000|eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9\\.eyJzdWIiOiIxMjM0NTY3ODkwIn0", "player": "gpt-4o-mini", "reasoning": "This pattern matches specific email formats, phone numbers, a specific order identifier, a URL with a port, a UUID, and a JWT token, ensuring that only the exact items listed are captured, without including any other similar looking strings.", "timestamp": 1742325465685}, {"move": {"text": "For inquiries, reach out to john.doe+office@sample-domain.com or \"help_desk\"@support.org. Our customer support numbers are +1 (800) 555-0199, +1 (800) 555-0188 ext. 101. You may also contact our UK office at +44 20 7946 0958. Please refer to your case numbers: ORDER/2021-12-31/XYZ-123456, INVOICE-789/2022.04.15/ABC-654321, and our product ID: 550e8400-e29b-41d4-a716-446655440000. Users can log in using tokens such as eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIn0. Visit our secured site: https://www.example.com:8443/path/to/resource.html. Lastly, our event will be held on 04/31/2023 - Event ID 2023-04/XYZ-99-ABC.", "targetItems": ["john.doe\\+office@example-domain\\.com", "\"help_desk\"@support\\.org", "+1 \\(800\\) 555-0199", "+1 \\(800\\) 555-0188 ext\\. 101", "+44 20 7946 0958", "ORDER\\/2021-12-31\\/XYZ-123456", "INVOICE-789\\/2022\\.04\\.15\\/ABC-654321", "550e8400-e29b-41d4-a716-446655440000", "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9\\.eyJzdWIiOiIxMjM0NTY3ODkwIn0", "https:\\/\\/www\\.example\\.com:8443\\/path\\/to\\/resource\\.html", "\\04\\/31\\/2023"]}, "player": "gpt-4o-mini", "reasoning": "I'm creating an extremely difficult regex challenge that incorporates a variety of complex patterns, including emails with special characters, phone numbers in multiple formats, dates with different separators, and even UUIDs and JWTs. This challenge requires handling of negative lookaheads, escaped characters, variable whitespace, and specific structures that would be confusing to parse. The combination of these elements makes it significantly more complex than previous challenges.", "timestamp": 1742325477125}]