{"content":"I've created an exceptionally difficult challenge that combines multiple complex patterns:\n1. Mixed date formats with various separators and optional components\n2. Valid vs invalid IPv6 addresses (including compressed forms)\n3. Product codes with specific validation rules\n4. Strings that look similar but require precise matching\n5. Numbers with specific formatting requirements\nThis will require careful handling of:\n- Multiple format variations\n- Negative lookahead/lookbehind to avoid false matches\n- Complex boundary conditions\n- Proper escape sequences\n- Precise quantifier usage","function_call":{"name":"make_move","arguments":"{\"reasoning\": \"I've created an exceptionally difficult challenge that combines multiple complex patterns:\\n1. Mixed date formats with various separators and optional components\\n2. Valid vs invalid IPv6 addresses (including compressed forms)\\n3. Product codes with specific validation rules\\n4. Strings that look similar but require p... (truncated)