[{"move": {"text": "For inquiries contact Jane at j.doe@example.co.uk or admin_mail@company.com. The appointment dates are set: 10-21-2022, 2023.11.12, 12/31/2023. Call us at +44 7700 900123, (123) 456-7890 or (123).456.7890. Note: the fake emails admin!mail@company..com and jd@examplecom aren't valid. Special discounts end before 31-Dec-2023, but not on 31-Dec.-2023- or 30-12-023. IDs must follow formats like DEF123XYZ, GHI-456-UVW but not ABCD-12E3-FGH or XY1234Z. Ensure the use of right separators including .- and /, never other symbols!", "targetItems": ["j.doe@example.co.uk", "admin_mail@company.com", "10-21-2022", "2023.11.12", "12/31/2023", "+44 7700 900123", "(123) 456-7890", "(123).456.7890", "31-Dec-2023", "DEF123XYZ", "GHI-456-UVW"]}, "player": "gpt-4.5-preview", "reasoning": "This challenge incorporates multiple intricate patterns including dates with various separators, different structured phone numbers, mixed emails with edge cases, and text containing special characters. Regex solvers must handle complex alternations, backreferences, negative lookaheads, and precise escaping. Naive regex solutions are likely to fail here, as the provided sample contains similar-but-different patterns and tricky variations deliberately designed to mislead and confuse simplistic regex approaches.", "timestamp": 1742323989668}, {"move": "(?:[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,}|\\d{1,2}-\\d{1,2}-\\d{4}|\\d{4}\\.\\d{2}\\.\\d{2}|\\d{1,2}/\\d{1,2}/\\d{4}|\\+\\d{1,2} \\d{4} \\d{6}|\\(\\d{3}\\) \\d{3}-\\d{4}|\\(\\d{3}\\.\\d{3}\\.\\d{4}\\)|\\d{1,2}-[A-Za-z]{3}-\\d{4}|[A-Z]{3}\\d{3}[A-Z]{3}|[A-Z]{3}-\\d{3}-[A-Z]{3})", "player": "gpt-4o-mini", "reasoning": "This regex pattern is constructed to match the specified target items exactly as described. It includes different sections to match the various email formats, date formats, phone numbers, and specific identifiers. The pattern encompasses the following components: 1. Email addresses must conform to standard formats (including special characters such as underscores). 2. Dates are matched in the formats of MM-DD-YYYY, YYYY.MM.DD, and MM/DD/YYYY. 3. The international phone number format and US-style phone numbers with parentheses and dashes are accounted for. 4. Finally, identifiers with alphanumeric patterns separated by hyphens are included. This ensures that all specified items are matched while excluding anything else that does not fit these patterns.", "timestamp": 1742324008406}, {"move": {"text": "Emails: alice.b@domain.org, bob.smith@sub.domain.com, charlie+filter@service.net; Phone Numbers: 123-456-7890, (123) 456 7890, +1 123 456 7890, 123.456.7890, and 123/456/7890; Dates: 2022-12-31, 31-Dec-2022, 01/01/2023, and 2023.12.01; IDs: XZY-1234-ab78, AB-567-CD890, and A-9999-A; Some incorrect formats: john@doe..com, 12345@domain.com, +44 12345 67890, 01/01/22, and not-a-date", "targetItems": ["alice.b@domain.org", "bob.smith@sub.domain.com", "charlie+filter@service.net", "+1 123 456 7890", "123-456-7890", "(123) 456 7890", "123.456.7890", "2022-12-31", "31-Dec-2022", "01/01/2023", "2023.12.01", "XZY-1234-ab78", "AB-567-CD890", "A-9999-A"]}, "player": "gpt-4o-mini", "reasoning": "I'm creating an extremely difficult challenge requiring complex pattern matching across various formats. This regex challenge includes a mix of emails with special characters, phone numbers formatted inconsistently, various date formats with and without separators, and items with embedded numeric and alphabetic sequences that require specific handling to ensure accuracy. Additionally, there are tricky edge cases like similar formats that should not match and the incorporation of negative lookaheads to avoid false positives. This regex challenge will definitely test the mettle of even seasoned regex practitioners.", "timestamp": 1742324020986}, {"move": "solve", "player": "gpt-4.5-preview", "random": true, "reasoning": "Random move selected after failed API responses", "timestamp": 1742324166329}, {"move": {"text": "Meetings scheduled: 2023-02-29 (invalid), 2024-02-29 (valid leap year), 28-Feb-2023, Emails: valid.email+test@sub.domain.co.uk, user.name@domain.com, fake-email@com, Phones: (+1) 123-456-7890, +44 20 7946 0958, -1-800-555-0199 (invalid), IDs: AA-1234-BB, AZ-9999-ZZ, AA-12345-BB (one too many numbers), Special codes: SX_1902:\">Valid<\", SX_1902:'Invalid', SX_2023:\">Valid<\"", "targetItems": ["2024-02-29", "28-Feb-2023", "valid.email+test@sub.domain.co.uk", "user.name@domain.com", "(+1) 123-456-7890", "+44 20 7946 0958", "AA-1234-BB", "AZ-9999-ZZ", "SX_1902:\">Valid<\"", "SX_2023:\">Valid<\""]}, "player": "gpt-4.5-preview", "reasoning": "I'm crafting a highly challenging regex scenario that combines multiple complex patterns, including sophisticated date formats, intricate email and phone number combinations, and alphanumeric items that closely resemble invalid variants. My goal is to ensure the target items differ subtly from non-target elements, compelling the regex to leverage advanced techniques like lookahead, lookbehind, conditional logic, escaping special characters, and precise alternations.", "timestamp": 1742324370208}, {"move": "(?:\b(?:[2][0][2-4]-[0-2][0-9]-[0-9]{2}|[0-9]{1,2}-[A-Za-z]{3}-[0-9]{4}|[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,}|\\(\\+1\\) [0-9]{3}-[0-9]{3}-[0-9]{4}|\\+44 [0-9]{2} [0-9]{4} [0-9]{4}|[A-Z]{2}-[0-9]{4}-[A-Z]{2}|[A-Z]{2}-[0-9]{4}-[A-Z]{2}|SX_[0-9]{4}:\">Valid<\"|SX_[0-9]{4}:\">Valid<\")\\b)", "player": "gpt-4o-mini", "reasoning": "This pattern is designed to accurately match the specified targets, including dates in the format YYYY-MM-DD, date formats with month names, valid email formats, international phone numbers with various formats, valid IDs, and custom codes. The regex carefully avoids false matches by specifying exact structures for dates, emails, phone numbers, and special codes. Each section of the regex is separated by '|' to ensure that only the target items are matched without inadvertently capturing invalid formats.", "timestamp": 1742324379639}, {"move": {"text": "User contacts: john.doe+test@email-service-provider.com, jane-doe123@external-domain.org, and emails that do not match: user@.com, invalid-email@, and valid.email@domain.co.uk. Phone numbers: +1 (202) 555-0152, 202.555.0189, +44 20 7946 0958, and invalid numbers such as (202 555-0189, +44 (0) 20 7946 0958. Dates: 31/12/2023, 12-31-2023, and invalid dates like 31-02-2023, 2023.13.01, and 2023-02-29 (leap year). Identifiers: ID-01-A, A-02-BB, and invalid ones like A-B-03, C-999. Check patterns: WX-1234-xyz - and - WX_2021_valid but not matching IDs like ABC_123-XZY or ID_12-ABCA.", "targetItems": ["john.doe+test@email-service-provider.com", "jane-doe123@external-domain.org", "user@.com", "invalid-email@", "valid.email@domain.co.uk", "+1 (202) 555-0152", "202.555.0189", "+44 20 7946 0958", "(202 555-0189", "+44 (0) 20 7946 0958", "31/12/2023", "12-31-2023", "31-02-2023", "2023.13.01", "2023-02-29", "ID-01-A", "A-02-BB", "A-B-03", "C-999", "WX-1234-xyz"]}, "player": "gpt-4o-mini", "reasoning": "This challenge is crafted to be exceptionally difficult, incorporating multiple advanced regex techniques. It includes mixed formats such as emails with special characters, phone numbers with varying formats, dates in multiple formats, and complex patterns requiring lookaheads and lookbehinds. The inclusion of optional components, whitespace variations, and subtle edge cases ensures that naive solutions will encounter significant challenges. The regex must accurately differentiate between subtly similar items while handling special characters and escaping.", "timestamp": 1742324391647}, {"move": "solve", "player": "gpt-4.5-preview", "random": true, "reasoning": "Random move selected after failed API responses", "timestamp": 1742324521047}, {"move": "propose", "player": "gpt-4.5-preview", "random": true, "reasoning": "Random move selected after failed API responses", "timestamp": 1742324779004}]