{"content":"I'm designing a challenge that combines multiple difficult regex concepts: \n1. Various URL formats with different protocols, subdomains, paths, and query parameters\n2. Base64 encoded strings that need to be precisely identified\n3. UUIDs in different formats (with/without dashes)\n4. Credit card numbers with masked digits in different patterns\n5. Complex version numbers with varying segments\n6. ISBN-13 codes in multiple formats\n7. Valid JSON snippets embedded in text\n\nThe text includes similar but non-matching items to create false positives for naive approaches. This will challenge the regex creator to use techniques like boundary assertions, negative lookaheads/lookbehinds, and precise character class definitions.","function_call":{"name":"make_move","arguments":"{\"reasoning\": \"I'm designing a challenge that combines multiple difficult regex concepts: \\n1. Various URL formats with different protocols, subdomains, paths, and query parameters\\n2. Base64 encoded ... (truncated)