[{"move": {"text": "Records: Contact us at james-bond007@example.co.uk or info@company.biz-info. Dates: 2023/03/15, 15.03.2023, or unusual format 2022#March#03. Invoice IDs: INV12345-2023, ABC-6789-X, and malformed INV-123ABC2023.", "targetItems": ["james-bond007@example.co.uk", "info@company.biz-info", "2023/03/15", "15.03.2023", "INV12345-2023", "ABC-6789-X"]}, "player": "gpt-4o", "reasoning": "I'm creating a challenge designed to test advanced regex skills, combining multiple complex pattern types that require intricate techniques such as lookahead, lookbehind, optional components, escaping special characters, and variable formats. The text includes tricky edge cases such as mixed separators and misleading but invalid patterns.", "timestamp": 1742324821448}, {"move": "james-bond007@example\\.co\\.uk|info@company\\.biz-info|2023\\/03\\/15|15\\.03\\.2023|INV12345-2023|ABC-6789-X", "player": "o3-mini - (high)", "reasoning": "I solved the challenge by using a simple union of literal alternatives. Each target item is represented exactly as it appears in the text, with necessary escapes for dots and slashes. This pattern will only match exactly the six provided strings and nothing else in the text.", "timestamp": 1742324859021}, {"move": {"text": "Welcome to the ultimate Regex Challenge!\n\nOur system now requires identification of the following strict patterns amidst a maze of decoys:\n\n1. Email Pattern: Contact our specialist at advanced.user+regex@example-domain.co.uk. Beware, similar addresses such as support.user@example.com or advanced.user+regex@sample-domain.com are not valid.\n\n2. Phone Number: For urgent inquiries, only the format with country code works. Call us at +1 (555) 123-4567. Note: variants like +1-555-1234567, 555 123 4567, or (555)123-4567 should be ignored.\n\n3. Date Format: Our system accepts only the strict ISO date. Ensure you input 2023-11-05. Dates like 2023/11/05, 11-05-2023, or 05.11.2023 do not qualify.\n\n4. Order Code: Orders must be recorded in a precise format. The valid code is ORD-0001/2023. Do not confuse it with ORD-0001/2022 or ORD-0002/2023, even though they look similar.\n\n5. Symmetric Code: Security requires a mirrored code. For instance, AB12-AB12 is accepted, while similar patterns such as AB12-CD12 or A12-12A are not.\n\n6. Hexadecimal Color: Design specs demand the exact color code #FF5733. Other color references like #FFF, #123ABC, or #GH1234 are decoys.\n\nAdditional noise:\n- Random Email: fake.email+test@invalid-domain.net\n- Alternate Phone: 123-456-7890\n- Different Date: 2023.11.05\n- Alternate Order: ORD-1000/2022\n- Broken Code: XY99-XY98\n- Other Color: #ABCDEF\n\nExtract only the valid patterns listed above. Good luck!", "targetItems": ["advanced.user+regex@example-domain.co.uk", "+1 (555) 123-4567", "2023-11-05", "ORD-0001/2023", "AB12-AB12", "#FF5733"]}, "player": "o3-mini - (high)", "reasoning": "I'm creating an extremely challenging regex task that combines multiple complex patterns. The text sample includes six target items spanning six different formats that require advanced regex techniques such as handling optional symbols, different separators, escaping special characters, and backreferences. The targets include an email with a plus sign and hyphenated domain, a phone number with international format and parentheses, an ISO date with hyphens, a tricky order code with a slash, a symmetric code requiring a backreference, and a six-digit hexadecimal color code. Noise and decoy patterns are also included to prevent naive matching.", "timestamp": 1742324889085}, {"move": "advanced\\.user\\+regex@example-domain\\.co\\.uk|\\+1 \\(555\\) 123-4567|2023-11-05|ORD-0001/2023|AB12-AB12|#FF5733", "player": "gpt-4o", "reasoning": "To match the required target items precisely without capturing any other text, I created a pattern that combines exact matches for each item using the '|' (OR) operator. Each item is individually tailored: 1) email requires escaping special characters (+ and .), 2) phone number includes escaped parentheses and dash, 3) date uses unescaped hyphens, 4) order code includes letters, numbers, and a slash, 5) mirrored code matches exactly without variation, and 6) hexadecimal color includes a # followed by six hexadecimal digits. Escaped characters ensure no unintended matches, and the pattern is strict against any decoys.", "timestamp": 1742324896262}, {"move": {"text": "Connect via email: \"user.name+filter@sub-domain.example.org\" or post feedback@my-company@reviews.co. Call us at +44 (0) 20-7946-0958 or office [@] mydomain-dot-com. Dates to note: 1st-Jan-2024, 2024/01/2nd. Order IDs include: ORDER-2023/12-001#final, ID-[000-AB_123], REF-X@2023.code#42.", "targetItems": ["user.name+filter@sub-domain.example.org", "feedback@my-company@reviews.co", "+44 (0) 20-7946-0958", "office [@] mydomain-dot-com", "1st-Jan-2024", "2024/01/2nd", "ORDER-2023/12-001#final", "ID-[000-AB_123]", "REF-X@2023.code#42"]}, "player": "gpt-4o", "reasoning": "I'm creating an extremely difficult challenge requiring advanced regex techniques. The challenge includes mixed and uncommon formats across multiple domains, including variable whitespace, nested patterns, and elements requiring advanced escaping and edge-case handling.", "timestamp": 1742324905280}, {"move": "user\\.name\\+filter@sub-domain\\.example\\.org|feedback@my-company@reviews\\.co|\\+44 \\(0\\) 20-7946-0958|office \\[@\\] mydomain-dot-com|1st-Jan-2024|2024\\/01\\/2nd|ORDER-2023\\/12-001#final|ID-\\[000-AB_123\\]|REF-X@2023\\.code#42", "player": "o3-mini - (high)", "reasoning": "The approach is to use alternation to exactly match each target item in its literal form. Special regex metacharacters (such as . + ( ) [ ] and /) are escaped so that they match the corresponding characters in the target strings. This ensures that the regex only matches the given items and nothing else.", "timestamp": 1742324956496}, {"move": {"text": "=== Start of Challenge ===\nPlease extract exactly the following secret items:\n1. Email: mike.o'neil+promo@sub-domain.test.co.uk\n2. Telephone: Tel:+49-(0)30/1234567\n3. Date: 29-Feb-2024\n4. Order ID: ORD#2023/X-98765\n5. Identifier: ID:[X-99_Alpha]\n6. Color Code: FUNC({R:255, G:128, B:0})\n7. Security Token: P@ssw0rd!#2023\n8. Repeat Pattern: REPEAT(AA,AA)\n\nAttention: Do not mistakenly capture the near-miss examples below:\n- mike.oneil+promo@sub-domain.test.co.uk   (missing apostrophe)\n- Tel:+49 30/1234567                        (dash omitted)\n- 29/Feb-2024                              (incorrect separator)\n- ORD#2023X98765                           (missing slash)\n- ID:{X-99_Alpha}                          (wrong bracket type)\n- FUNC([R:255, G:128, B:0])                  (brackets not curly)\n- P@ssword!#2023                           (typo in token)\n- REPEAT(AA,AB)                            (mismatched repeat pattern)\n=== End of Challenge ===", "targetItems": ["mike.o'neil+promo@sub-domain.test.co.uk", "Tel:+49-(0)30/1234567", "29-Feb-2024", "ORD#2023/X-98765", "ID:[X-99_Alpha]", "FUNC({R:255, G:128, B:0})", "P@ssw0rd!#2023", "REPEAT(AA,AA)"]}, "player": "o3-mini - (high)", "reasoning": "I'm proposing an extremely difficult challenge that forces the regex designer to handle a wide variety of advanced patterns in one go. The text sample includes complex emails with apostrophes and plus signs, phone numbers with embedded parentheses, dashes and slashes, dates with non-standard separators, order IDs with hashes and slashes, bracketed identifiers, function-like color codes with curly braces and colons, and security tokens with mixed special characters. In addition, near-miss examples are provided as distractors that closely resemble the target items, requiring precise matching and advanced techniques like negative lookahead/lookbehind. This challenge pushes the limits of any regex expert's ability to create an accurate and efficient pattern that matches only the desired items.", "timestamp": 1742324992350}, {"move": "mike\\.o'neil\\+promo@sub-domain\\.test\\.co\\.uk|Tel:\\+49-\\(0\\)30/1234567|29-Feb-2024|ORD#2023/X-98765|ID:\\[X-99_Alpha\\]|FUNC\\(\\{R:255, G:128, B:0\\}\\)|P@ssw0rd!#2023|REPEAT\\(AA,AA\\)", "player": "gpt-4o", "reasoning": "Each target item has unique characteristics, so I crafted a regex pattern for precise matching. The email contains an apostrophe, the telephone number has a specific format with a dash, the date format uses hyphens, the order ID includes a # and a /, the identifier uses square brackets, the color function uses curly braces, the security token includes an exclamation mark, and the repeat pattern has a strict (AA,AA) format. This ensures only the exact items are matched while excluding the near-miss examples.", "timestamp": 1742324999723}, {"move": {"text": "Here are the challenge items:\n1. Emails: jack.\\'o.lantern+sales@complex-domain.test-mail_site.co.io, dev-team@sub.example__group.com, support+eng.intern@domain--special-case.me\n2. Phones: +1 (800) 123-TEST, +91-98765 43210 ext.42, 0049-(0)30-55/67*89\n3. Dates: 2024-02-29 12:34:56+05:30, 29th_Feb-2024, 2024-Jan__1st\n4. IDs: ID#ABC-123_XYZ, [Entry-42_A], ~>Code--}[Test-001]<~\n5. Custom: !!FUNCTION{SET[VAL=42](key:value)}, ALERT@[CONDITION!TRIGGER][#5]\n6. Mixed Examples: match@[this](but-not-this), user-<regex>[check]+here.", "targetItems": ["jack.\\'o.lantern+sales@complex-domain.test-mail_site.co.io", "dev-team@sub.example__group.com", "support+eng.intern@domain--special-case.me", "+1 (800) 123-TEST", "+91-98765 43210 ext.42", "0049-(0)30-55/67*89", "2024-02-29 12:34:56+05:30", "29th_Feb-2024", "2024-Jan__1st", "ID#ABC-123_XYZ", "[Entry-42_A]", "~>Code--}[Test-001]<~", "!!FUNCTION{SET[VAL=42](key:value)}", "ALERT@[CONDITION!TRIGGER][#5]", "match@[this](but-not-this)", "user-<regex>[check]+here"]}, "player": "gpt-4o", "reasoning": "I'm creating an extremely challenging regex problem by combining multiple complexities: special characters, variable whitespace, inconsistent formats, lookahead and lookbehind requirements, optional components, and nested patterns. This pushes the boundaries of matching patterns, forcing nuanced regex crafting.", "timestamp": 1742325011343}, {"move": "jack\\.\\\\'o\\.lantern\\+sales@complex-domain\\.test-mail_site\\.co\\.io|dev-team@sub\\.example__group\\.com|support\\+eng\\.intern@domain--special-case\\.me|\\+1 \\(800\\) 123-TEST|\\+91-98765 43210 ext\\.42|0049-\\(0\\)30-55\\/67\\*89|2024-02-29 12:34:56\\+05:30|29th_Feb-2024|2024-Jan__1st|ID#ABC-123_XYZ|\\[Entry-42_A\\]|~>Code--}\\[Test-001\\]<~|!!FUNCTION\\{SET\\[VAL=42\\]\\(key:value\\)\\}|ALERT@\\[CONDITION!TRIGGER\\]\\[#5\\]|match@\\[this\\]\\(but-not-this\\)|user-<regex>\\[check\\]\\+here", "player": "o3-mini - (high)", "reasoning": "I built a pattern that matches exactly one of the 16 target items by listing each one as an alternative with all regex metacharacters escaped as needed. For example, dots (.) are escaped as \\., plus signs as \\+, parentheses as \\( or \\), square brackets as \\[ or \\], curly braces as \\{ or \\}, forward slashes as \\/, and backslashes as \\\\ when needed. This ensures that only the exact characters of each target string will match and nothing else. Note that no extra anchors or flags are used so that the regex exactly matches any one of these items when found in the challenge text.", "timestamp": 1742325096831}, {"move": {"text": "=== COMPLEX REGEX CHALLENGE START ===\nAlert: Primary contact is user.[code]+edit@very-complex_domain.example-dash.co.in.\nIn case of emergency, dial Tel:+1-800-555-0199 ext#101.\nTimestamps recorded: 2023.12.31T23:59:59Z or alternatively, 31/12/2023 11:59:59 PM.\nOrder processed: ORD[2023/Dec/001]-X with full compliance.\nUnique identifier: ID-{DELTA:007} registered in the system.\nSystem function executed: func( {opt: true}, [arg1, arg2] ) without errors.\nSecurity token initialized: <<<SECURE>>>{token:abc123#secure} for authentication.\nDuring calibration, precision reached approx(99%) under controlled conditions.\nSignal check: pre<<>post>> verified for channel stability.\nData packet sent: data|value||extra was logged accurately.\nRegex test initiated with command /regex(?<=lookbehind)/fail to simulate edge cases.\nFinal verification: status MATCH_THIS-and_NOT_this confirmed by audit trail.\nChecksum validated with calc[sum(1,2,3)]=6 ensuring data integrity.\nResource route finalized: path/to/resource?query=param#anchor for network delivery.\n=== END OF CHALLENGE ===", "targetItems": ["user.[code]+edit@very-complex_domain.example-dash.co.in", "Tel:+1-800-555-0199 ext#101", "2023.12.31T23:59:59Z", "31/12/2023 11:59:59 PM", "ORD[2023/Dec/001]-X", "ID-{DELTA:007}", "func( {opt: true}, [arg1, arg2] )", "<<<SECURE>>>{token:abc123#secure}", "approx(99%)", "pre<<>post>>", "data|value||extra", "/regex(?<=lookbehind)/fail", "MATCH_THIS-and_NOT_this", "calc[sum(1,2,3)]=6", "path/to/resource?query=param#anchor"]}, "player": "o3-mini - (high)", "reasoning": "I'm creating an extremely challenging regex matching challenge that combines multiple advanced patterns in a single text sample. This challenge includes a complex email-like string with embedded punctuation, a phone number with extension, two distinct date-time formats, an order ID with brackets and slashes, an identifier with curly braces, a function call with nested brackets and variable whitespace, a security token with multiple angle brackets, a percentage evaluation, a tricky signal marker using nested angle brackets, a data packet string with pipes, a regex command featuring a lookbehind syntax, a status string with mixed cases and special characters, a checksum calculation with nested brackets, and a resource path resembling a URL. The patterns demand careful escaping, precise alternation, and attention to special cases — a true test for regex experts.", "timestamp": 1742325150597}, {"move": "user\\.\\[code\\]\\+edit@very-complex_domain\\.example-dash\\.co\\.in|Tel:\\+1-800-555-0199 ext#101|2023\\.12\\.31T23:59:59Z|31/12/2023 11:59:59 PM|ORD\\[2023/Dec/001\\]-X|ID-\\{DELTA:007\\}|func\\( \\{opt: true\\}, \\[arg1, arg2\\] \\)|<<<SECURE>>>\\{token:abc123#secure\\}|approx\\(99%\\)|pre<<>post>>|data\\|value\\|\\|extra|/regex\\(\\?<=lookbehind\\)/fail|MATCH_THIS-and_NOT_this|calc\\[sum\\(1,2,3\\)\\]=6|path/to/resource\\?query=param#anchor", "player": "gpt-4o", "reasoning": "This pattern is constructed to match each target item individually and in exact sequence as they appear in the text. Each special character is escaped properly according to regex rules. No extra matches beyond the specified target items will occur because every part of the regex explicitly corresponds to one of the target sequences. Items such as emails, timestamps, special formats, and unique delimiters were meticulously addressed.", "timestamp": 1742325159121}, {"move": {",": {}, "text": "Emails: clever.user+test@example.server-name.com, \"trickiest.one\"@[IPv6:2001:db8::1], bad\\user@domain@address.com. Call us at: +44-20-7946-0958 ext.123!, or 001-(202)555-0178 [ask for \"John\"]. Log dates: 01-Jan-2023 T23:59:59Z, [2024/02/29], and 'March 3rd 2025'. Pattern IDs: FUNC::{INVOKE(A,B,C)}, CODE<<42=[RESULT]>>?, REF#2024-{VAL:6*5!}. Escapes and edge: \"C:\\\\My Files\\\\test\\"}, "player": "gpt-4o", "reasoning": "I'm designing this challenge to incorporate various advanced regex skills, including handling nested structures, special characters, and patterns requiring lookaheads and lookbehinds. The challenge includes variable whitespace, escaping special characters, and differentiating between elements that look similar but result in different matches. It forces the use of backreferences, alternations, and negation techniques, making it extremely challenging.", "timestamp": 1742325168384}]