[{"move": {"text": "Emails: user123@domain-name.info, john.doe+tag@example.com, jane_smith@company.co.uk, and john.doe@example.co.uk. Phone numbers: 123-456-7890, 123.456.7890, 1234567890, 123-45-67. Dates: 2022-01-01, 01/01/2022, 01-01-2022, 1st January 2022. Special characters: hello@world.com, hello-world@com, hello-world@company.co.uk, hello-world+tag@company.co.uk. IDs: ABC-123-xyz, DEF-456-UVW, ABC-DEF-GHI, 123-ABC-XYZ.", "targetItems": ["user123@domain-name.info", "john.doe+tag@example.com", "jane_smith@company.co.uk", "john.doe@example.co.uk", "123-456-7890", "123.456.7890", "1234567890", "123-45-67", "2022-01-01", "01/01/2022", "01-01-2022", "1st January 2022", "hello@world.com", "hello-world@com", "hello-world@company.co.uk", "hello-world+tag@company.co.uk", "ABC-123-xyz", "DEF-456-UVW", "ABC-DEF-GHI", "123-ABC-XYZ"]}, "player": "Mistral Nemo (12B)", "reasoning": "I've created an extremely difficult challenge requiring advanced pattern matching. The text contains a mix of email formats, phone numbers with different separators, dates in various formats, and special characters that need escaping. Additionally, there are tricky edge cases where similar items should not be matched, and patterns requiring backreferences and complex alternation.", "timestamp": 1742510711846}, {"move": "user123@domain-name\\.info|john\\.doe\\+tag@example\\.com|jane_smith@company\\.co\\.uk|john\\.doe@example\\.co\\.uk|123-456-7890|123\\.456\\.7890|1234567890|123-45-67|2022-01-01|01\\/01\\/2022|01-01-2022|1st January 2022|hello@world\\.com|hello-world@com|hello-world@company\\.co\\.uk|hello-world\\+tag@company\\.co\\.uk|ABC-123-xyz|DEF-456-UVW|ABC-DEF-GHI|123-ABC-XYZ", "player": "claude 3.7 sonnet (high2)", "reasoning": "I'm using a simple alternation approach to match exactly the target items. Each item is listed as an alternative in the pattern with special regex characters escaped:\n1. Dots (.) in email addresses and phone numbers are escaped with \\. \n2. Plus signs (+) in email addresses are escaped with \\+\n3. Forward slashes (/) in dates are escaped with \\/\nThis approach ensures we match exactly these specific strings without matching anything else in the text. The pattern is straightforward and reliable for this specific set of items.", "timestamp": 1742510865399}]