[{"move": {"text": "Here is the ultimate challenge:\n\nPlease extract all valid items from the following text.\n\nEmails: jNaIL@example-domain.com, info+special@sub.domain.co.uk, tricky.email@test-domain.org.\nPhones: +1 (123) 456-7890, 123-456-7890, (555) 123 4567 ext. 123.\nDates: 2021/04/01, 01-04-2021, 2021-04-01.\n\nNote: Ensure your regex distinguishes between similar but invalid patterns, handles optional white space and potential noise, and extracts only the items above exactly.", "targetItems": ["jNaIL@example-domain.com", "info+special@sub.domain.co.uk", "tricky.email@test-domain.org", "+1 (123) 456-7890", "123-456-7890", "(555) 123 4567 ext. 123", "2021/04/01", "01-04-2021", "2021-04-01"]}, "player": "o3-mini - (low)", "reasoning": "I'm proposing a complex challenge that requires matching multiple distinct patterns in a single regex: emails with subdomains, plus signs, and hyphens; phone numbers in various international and domestic formats, including those with extensions; and dates in different formats with varying delimiters. This challenge demands advanced regex techniques including alternation, grouping, optional components, and more, making it a significantly difficult challenge.", "timestamp": 1742325554115}, {"move": "[a-zA-Z0-9.+_-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,}|\\+1 \\(\\d{3}\\) \\d{3}-\\d{4}|\\d{3}-\\d{3}-\\d{4}|\\(\\d{3}\\) \\d{3} \\d{4} ext\\. \\d{3}|\\d{4}/\\d{2}/\\d{2}|\\d{2}-\\d{2}-\\d{4}|\\d{4}-\\d{2}-\\d{2}", "player": "gpt-4.5-preview", "reasoning": "This regex exactly captures given emails, phones, and dates separately by explicitly specifying the recognized formats. Emails have special permitted characters; Phones explicitly match provided formats (international, standard, and extension format); Dates strictly match YYYY/MM/DD, DD-MM-YYYY, and YYYY-MM-DD.", "timestamp": 1742325775688}, {"move": "propose", "player": "gpt-4.5-preview", "random": true, "reasoning": "Random move selected after failed API responses", "timestamp": 1742325943690}]