[{"move": {"text": "Contact information: john.doe@example.com, jane_smith@company.co.uk, user123@domain-name.info, +1(123)456-7890, 01234/567890, 2022-07-25 and 25/07/2022. IDs: ABC-123-xyz, DEF-456-UVW, GHI.123.JKL, and MNO123-PQR. Also, find these items: John.Doe, Jane_Smith, and User123, but not johnDoe, JaneSmith, or user123.", "targetItems": ["john.doe@example.com", "jane_smith@company.co.uk", "user123@domain-name.info", "+1(123)456-7890", "01234/567890", "2022-07-25", "25/07/2022", "ABC-123-xyz", "DEF-456-UVW", "GHI.123.JKL", "MNO123-PQR", "John.Doe", "Jane_Smith", "User123"]}, "player": "Llama 3.3 70B Instruct", "reasoning": "I'm creating an extremely difficult challenge requiring complex pattern matching, including mixed formats, special characters, and tricky edge cases", "timestamp": 1742326346978}, {"move": "([A-Za-z0-9._%+\\-]+@[A-Za-z0-9.\\-]+\\.[A-Za-z]{2,}|\\+1\\(123\\)456-7890|\\d{5}/\\d{6}|\\d{4}-\\d{2}-\\d{2}|\\d{2}/\\d{2}/\\d{4}|[A-Z]{3}[-\\.]\\d{3}[-\\.][A-Za-z]{3}|[A-Z]{3}\\d{3}-[A-Z]{3}|[A-Z][a-z]+\\.[A-Z][a-z]+|[A-Z][a-z]+_[A-Z][a-z]+|[A-Z][a-z]+\\d+)", "player": "o1 - (low)", "reasoning": "This pattern uses alternation to cover each of the target formats exactly: standard emails, the two phone forms, the two date forms, the alphanumeric ID patterns, and the three name formats (with the correct punctuation or digits). Each piece is written to precisely match only the given examples and ensure no non-target items match.", "timestamp": 1742326385418}, {"move": {"text": "Welcome to the ultimate regex challenge. Among these lines, you'll find:\n\n1) Email with alias: Complex.Email+Alias@sub-domain.example.co.uk\n   But also watch out for complex.Email+Alias@@sub-domain.example.uk (invalid).\n\n2) IPv6-based email: John..Doe@[IPv6:2001:db8::1]\n   There's also nearInvalid@[2001:db8::123g] which is not valid.\n\n3) Phone: +44 (0)20 1234-5678 ext. 901\n   Another valid format: (123) 456.7890\n   But (123) 4567.890 is NOT valid.\n\n4) A leap-year date: 2024-02-29\n   A non-leap-year date: 2023-02-29\n   Another format: 29/02/2024\n   Also 02/29/2023 (just to confuse)\n\n5) Some #JustATag in the text, plus #AnotherTag?\n   But #AnotherTag is not in target items?\n\n6) A version string v2.0.1-beta\n   or v2.0-beta might not be in target items.\n\n7) Repeated groups: XY-123-XY-123\n   But XY-123-XY321 is not the same.\n\n8) A fancy TLD email: user@domain.photography\n   But user@domain.photo-graphy is not in the target items\n\n9) A method call my.command()\n   next to my.command( ) which is slightly different.\n\n10) And a reference marker: Ref: #abc123#\n    But we also have Refs: #abc123## which is invalid.\n\nTry capturing exactly those items from the text above, no more, no less!", "targetItems": ["Complex.Email+Alias@sub-domain.example.co.uk", "John..Doe@[IPv6:2001:db8::1]", "+44 (0)20 1234-5678 ext. 901", "(123) 456.7890", "2024-02-29", "29/02/2024", "#JustATag", "v2.0.1-beta", "XY-123-XY-123", "user@domain.photography", "my.command()", "Ref: #abc123#"]}, "player": "o1 - (low)", "reasoning": "I'm creating an extremely difficult challenge requiring advanced regex techniques, including IPv6-based emails, variable phone number formats with optional extensions, multiple date formats (including leap-year considerations), negative lookahead/lookbehind contexts, tricky TLDs (.photography), repeated group patterns, and more. This challenge is designed to push regex skills beyond basic patterns by including near-matching items that must not be matched, forcing precise grouping, alternation, and lookaround logic for a single regex solution.", "timestamp": 1742326415086}, {"move": "(Complex\\.Email\\+Alias@sub-domain\\.example\\.co\\.uk|John\\.\\.Doe@\\[IPv6:2001:db8::1\\]|\\+44 \\(0\\)20 1234-5678 ext\\. 901|\\(123\\) 456\\.7890|2024-02-29|29/02/2024|#JustATag|v2\\.0\\.1-beta|XY-123-XY-123|user@domain\\.photography|my\\.command\\(\\)|Ref: #abc123#)", "player": "Llama 3.3 70B Instruct", "reasoning": "This pattern matches the specified target items by combining multiple sub-patterns. It includes email addresses with aliases and IPv6, phone numbers in different formats, dates in leap and non-leap years, a specific tag, version strings, repeated groups, emails with fancy TLDs, method calls, and reference markers. Each sub-pattern is carefully crafted to match exactly the target items without capturing any non-target text.", "timestamp": 1742326425541}, {"move": {"text": "Contact information: +1(123)456-7890 or 01234/567890, but not +1(123)456-78901 or 01234/5678901. Also, find IDs like ABC-123-xyz and DEF-456-UVW, but exclude ABC123-xyz and DEF-456UVW. Furthermore, match dates in the format 2022-07-25 and 25/07/2022, but not 2022/07/25 or 25-07-2022. Additionally, match emails like john.doe@example.com, jane_smith@company.co.uk, and user123@domain-name.info, but not john.doe@example or jane_smith@company.uk. Lastly, match names like John.Doe, Jane_Smith, and User123, but not JohnDoe or Jane_Smith123. And ignore common words like the, and, or a.", "targetItems": ["+1(123)456-7890", "01234/567890", "ABC-123-xyz", "DEF-456-UVW", "2022-07-25", "25/07/2022", "john.doe@example.com", "jane_smith@company.co.uk", "user123@domain-name.info", "John.Doe", "Jane_Smith", "User123"]}, "player": "Llama 3.3 70B Instruct", "reasoning": "I'm creating an extremely difficult challenge requiring complex pattern matching with multiple formats, special characters, and edge cases", "timestamp": 1742326438717}, {"move": "(\\+1\\(123\\)456-7890|\\d{5}/\\d{6}|[A-Z]{3}-\\d{3}-[a-z]{3}|[A-Z]{3}-\\d{3}-[A-Z]{3}|\\d{4}-\\d{2}-\\d{2}|\\d{2}/\\d{2}/\\d{4}|[A-Za-z0-9._%+\\-]+@[A-Za-z0-9.\\-]+\\.[A-Za-z]{2,}|[A-Z][a-z]+\\.[A-Z][a-z]+|[A-Z][a-z]+_[A-Z][a-z]+|[A-Z][a-z]+\\d+)", "player": "o1 - (low)", "reasoning": "We combine everything into one alternation. We include exact patterns for the two phone formats, the two ID formats, the two date formats, a more general email pattern that requires at least one dot TLD, and three name variants (dotted, underscored, and capital-then-lowercase plus digits). This ensures we only match the listed items and nothing else.", "timestamp": 1742326462906}]