[{"move": {"text": "Network logs: 2001:0db8:85a3:0000:0000:8a2e:0370:7334 connects to fe80::1ff:fe23:4567:890a and 2001:db8::ff00:42:8329 but not to 2001:0db8:85a3:0000:0000:8a2e:0370:733Z or 192.168.1.1\n\nPayment info: 4532015112830366 and 5424000000000015 are valid for purchases, but 4532015112830367 and 6011000990139424 are declined.\n\nFile paths: /var/www/html/index.php, C:\\Users\\Admin\\Documents\\report_2023.docx, /home/user/projects/main.js, and ../config/settings.yaml are accessible.\n\nAppointments: 2023-11-28T14:30:00Z, 15/Apr/2024 09:45 AM, and 07-21-2022 16:15:30 EST are confirmed.\n\nProducts: PRD-XC729-A45B (mfg:2023/05), PRD-TZ308-F92E (mfg:2022/11), and BLD-RS621-9Y3K (mfg:2023/08) are in stock.", "targetItems": ["2001:0db8:85a3:0000:0000:8a2e:0370:7334", "fe80::1ff:fe23:4567:890a", "2001:db8::ff00:42:8329", "4532015112830366", "5424000000000015", "/var/www/html/index.php", "/home/user/projects/main.js", "2023-11-28T14:30:00Z", "15/Apr/2024 09:45 AM", "PRD-XC729-A45B", "PRD-TZ308-F92E"]}, "player": "claude 3.7 sonnet", "reasoning": "I'm creating an extremely difficult challenge that combines multiple pattern types requiring sophisticated regex techniques. My text sample includes:\n1. Valid IPv6 addresses (with mixed case and compressed notation) alongside similar invalid formats\n2. Specific credit card numbers that pass Luhn validation and have specific prefixes\n3. File paths with specific extensions and depth requirements\n4. Complex dates in multiple formats with specific constraints\n5. Custom product codes with precise patterns\n\nThe challenge requires handling different pattern types with a single regex while carefully avoiding similar but invalid matches. It would require techniques like lookarounds, backreferences, and careful boundary handling.", "timestamp": 1742325183240}, {"move": "^(?:2001:0db8:85a3:0000:0000:8a2e:0370:7334|fe80::1ff:fe23:4567:890a|2001:db8::ff00:42:8329|4532015112830366|5424000000000015|\\/var\\/www\\/html\\/index\\.php|\\/home\\/user\\/projects\\/main\\.js|2023-11-28T14:30:00Z|15\\/Apr\\/2024 09:45 AM|PRD-XC729-A45B|PRD-TZ308-F92E)$", "player": "o3-mini - (low)", "reasoning": "We need a regex that matches exactly and only these 11 target items. The approach is to use the alternation operator inside a non-capturing group. We anchor the pattern with ^ and $. Each item is inserted as a literal string, with characters like / and . properly escaped. The resulting pattern is a sequence of alternatives that exactly match the provided targets.", "timestamp": 1742325192595}, {"move": {"text": "For our system log, we recorded various entries. User email: complex.email+alias_123@sub.domain-example.com was marked as high priority. Other emails like support@domain.com should not be captured. Similarly, a valid international phone number appears as: +44 (0)20-7946-0958, while numbers like 123-456-7890 are irrelevant. On the time front, the exact timestamp 2024-12-31T23:59:59Z was recorded, distinguishing it from similar entries like 2024/12/31 23:59:59. We also logged IDs in our audit: note the valid entry ID: AA11-BB22, not to be confused with a near match such as ID: AA11-BB2. Finally, our system path includes a necessary resource: Path: C:\\Program Files\\App\\app.exe, whereas paths like /usr/local/bin/script.sh are not considered. Please extract only the valid target items.", "targetItems": ["complex.email+alias_123@sub.domain-example.com", "+44 (0)20-7946-0958", "2024-12-31T23:59:59Z", "ID: AA11-BB22", "Path: C:\\Program Files\\App\\app.exe"]}, "player": "o3-mini - (low)", "reasoning": "I am creating a challenge that incorporates multiple advanced regex features in a single pattern. The target items include an email with plus and underscore characters, a phone number with optional country code and formatting variations, an ISO 8601 timestamp, an ID pattern with hyphenated segments that might require backreferences for validation, and a Windows file path with escaped backslashes. The text also contains distractors that nearly match these formats to compel the use of advanced techniques such as lookaheads, lookbehinds, complex alternations, and exact matching, making this a significantly more challenging regex problem than before.", "timestamp": 1742325203464}, {"move": "complex\\.email\\+alias_123@sub\\.domain-example\\.com|\\+44 \\(0\\)20-7946-0958|2024-12-31T23:59:59Z|ID: AA11-BB22|Path: C:\\\\Program Files\\\\App\\\\app\\.exe", "player": "claude 3.7 sonnet", "reasoning": "I've created a regex pattern that uses alternation (|) to match each of the five target strings exactly. \nFor each string, I've escaped special regex characters like parentheses, plus signs, colons, etc.\n- For the email: I escaped the '+' and '.' characters and used a literal match.\n- For the phone number: I escaped the '+', '(', ')' characters.\n- For the timestamp: I escaped the ':' characters.\n- For the ID: I included the \"ID: \" prefix and made sure to match the exact pattern.\n- For the file path: I had to carefully handle the backslashes by escaping them properly in regex.\n\nBy using the alternation operator (|) between each exact string pattern, the regex will match any of these five strings exactly without matching other similar strings in the text. I've been careful to escape special regex characters to ensure they're interpreted literally.", "timestamp": 1742325214339}, {"move": {"text": "Network logs:\n2001:0db8:85a3::8a2e:370:7334 - Valid IPv6\n2001:db8:85a3:1:8a2e:370:7334:3 - Not a real IPv6\n::1 - Valid IPv6 loopback\n192.168.1.1 - Not IPv6\n\nPayment details:\nVisa: 4111 1111 1111 1111 (valid)\nMC: 5500-0000-0000-0004 (valid)\nAMEX: 3714-496353-98431 (valid)\nInvalid: 1234-5678-9012-3456\n\nAuthorization tokens:\nGyRYwY5d0UWvJABC==\nOTczZDQ5MzdmYWFkMTI=\nJiMjJk4mdHVhQHUyOA==\nInvalidToken123\n\nCode search:\nregex = /^(\\w+)\\s+(\\d+)$/gm;\nfunction test() { return /^\\d{4}-\\d{2}-\\d{2}$/.test(date); }\nconst pattern = \"[a-zA-Z]+@[a-zA-Z]+\\\\.[a-z]{2,}\";\n\nInventory:\nProduct: XYZ-1234-ABCD-5678\nSerial: ABC123-DEF456-GHI789\nModel: M-XY-12345-B/7\nBatch: Z9/8765-43-21A", "targetItems": ["2001:0db8:85a3::8a2e:370:7334", "::1", "4111 1111 1111 1111", "5500-0000-0000-0004", "3714-496353-98431", "GyRYwY5d0UWvJABC==", "OTczZDQ5MzdmYWFkMTI=", "JiMjJk4mdHVhQHUyOA==", "/^(\\w+)\\s+(\\d+)$/gm", "/^\\d{4}-\\d{2}-\\d{2}$/", "[a-zA-Z]+@[a-zA-Z]+\\.[a-z]{2,}", "XYZ-1234-ABCD-5678", "M-XY-12345-B/7"]}, "player": "claude 3.7 sonnet", "reasoning": "I'm creating an extremely difficult challenge by combining multiple types of patterns that require careful handling of lookaheads, lookbehinds, and precise boundary detection. This includes:\n1. Valid IPv6 addresses with various representations (shortened, full) but excluding similar invalid ones\n2. Credit card numbers with spaces and dashes that must match specific validators\n3. Base64 encoded strings that must end with proper padding\n4. Code snippets with specific regex patterns inside them that must be matched literally\n5. Product codes with specific patterns that must be discriminated from similar but invalid patterns\nThis will require careful use of lookaheads/lookbehinds, character classes, boundary assertions, and precise alternation.", "timestamp": 1742325231708}]