[{"move": {"text": "==== SYSTEM LOGS ==== [Filtered view: recent 48h]\n\n## Format reference: [timestamp] IP [address] | User [email] | Session [id] | Status [state] | [optional notes]\n\n[2023-09-15T08:23:45Z] IP 192.168.1.1 | User admin@example.com | Session XY-12345 | Status active | Req: /api/v1/login\n[2023-09-15T08:25:12Z] IP 10.0.0.255 | User john.doe+test@sub.example.co.uk | Session AB-54321 | Status active | Req: /api/v1/data\n[2023-09-15T08:30:01Z] IP 172.16.254.1 | User user_name@domain-with-hyphen.com | Session CD-98765 | Status inactive | Req: /api/v1/logout\n[2023-09-15T08:35:45Z] IP 255.255.255.0 | User first.last@multi.level.domain.org | Session EF-24680 | Status active | Req: /api/v1/profile\n\n## Warning: Invalid login attempts detected from the following:\n\n[2023-09-15T09:10:22Z] IP 256.1.1.1 | User valid@email.com | Session GH-13579 | Status active | Req: /api/v1/data\n[2023-09-15T09:11:33Z] IP 192.168.1.1 | User invalid@email@domain.com | Session IJ-86420 | Status active | Req: /api/v1/profile  \n[2023-09-15T09:12:45Z] IP 10.0.0.1 | User valid@domain.com | Session KL-ABCDE | Status active | Req: /api/v1/settings\n[2023-09-15T09:13:57Z] IP 172.16.0.1 | User another.valid@email.net | Session MN-12345 | Status inactive | Req: /api/v1/data\n[2023-09-15T09:15:03Z] IP 192.168.0.1 | User missing.status@domain.com | Session OP-12345 | Status pending | Req: /api/v1/login\n\n## Security scan results - mixed format logs (for review):\n\n[2023-09-15T10:05:11Z] MAC 00:1A:2B:3C:4D:5E | IP 192.168.0.1 | User valid.format@domain.com | Session QR-86420 | Status active\n[2023-09-15T10:06:22Z] IP 192.168.1.1 | Comment \"This looks like user@domain.com\" | Session ST-97531 | Status active \n[2023-09-15T10:07:33Z] IP 8.8.8.8 | User admin@example.com | Port 8080 | Status active | No session information\n[2023-09-15T10:08:44Z] IP 192.168.1.100 | User admin@example.com | Session UV-45678 | Status active | Extra notes with email@domain.com\n\n## Developer test accounts (valid format, include in results):\n\n[2023-09", "targetItems": ["[2023-09-15T08:23:45Z] IP 192.168.1.1 | User admin@example.com | Session XY-12345 | Status active | ", "[2023-09-15T08:25:12Z] IP 10.0.0.255 | User john.doe+test@sub.example.co.uk | Session AB-54321 | Sta", "[2023-09-15T08:35:45Z] IP 255.255.255.0 | User first.last@multi.level.domain.org | Session EF-24680 ", "[2023-09-15T11:01:12Z] IP 127.0.0.1 | User email-with-hyphen@domain.com | Session WX-13579 | Status ", "[2023-09-15T11:02:23Z] IP 169.254.0.1 | User special+chars@domain.example | Session YZ-24680 | Statu", "[2023-09-15T11:03:34Z] IP 0.0.0.0 | User very.unusual.email@strange.domain.with.many.subdomains.exam", "[2023-09-15T11:04:45Z] IP 255.255.255.255 | User email_with_underscore@domain.co.jp | Session BB-678"]}, "player": "claude 3.7 sonnet (high2)", "reasoning": "This challenge combines multiple advanced regex requirements into one complex problem. It requires validating IPv4 addresses (with proper octet ranges 0-255), parsing various email formats (with subdomains, TLDs, plus addressing, hyphens), matching specific session ID patterns, and checking status - all while maintaining proper ordering and format. Invalid entries are carefully crafted to be just slightly off in various ways: invalid IPs (256.x.x.x), malformed emails (double @), incorrect session ID formats, or wrong statuses. The format also includes misleading similar patterns and edge cases that would trip up naive approaches.", "timestamp": 1742325860503}]