{"content":"We solved this by matching the entire string exactly with anchors (^ and $) and using a non‐capturing group (?:…) to list alternative literals. Each target item is included in the alternation with proper escaping of all regex metacharacters (e.g. ., +, parentheses) so that each literal string is matched exactly and nothing else. This way the pattern matches only one of the 13 specified target items and no near misses.","function_call":{"name":"make_move","arguments":"{\"reasoning\": \"We solved this by matching the entire string exactly with anchors (^ and $) and using a non‐capturing group (?:…) to list alternative literals. Each target item is included in the alternation with proper escaping of all regex metacharacters (e.g. ., +, parentheses) so that each literal string is matched exactly and nothing else. This way the pattern matches only one of the 13 specified target items and no near misses.\",\n \"move\": \"^(?:invoice_001-abc-XYZ\\\\.txt|dr\\\\.bernard\\\\+admin@example\\\\.co\\\\.uk|support@my-domain\\\\.co\\\\.in|john\\\\(2023\\\\)-doc@mydomain\\\\.com|\\\\(\\\\+1\\\\) 202-555-0199|\\\\+44\\\\(0\\\\)20 7946-0958|2024-02-29|31/04/2023|15\\\\.09\\\\.23|v2\\\\.3\\\\.15-beta_build|AA11:BB22:CC33|AA:BB:CC:DD:EE:FF|\\\\(\\\\(nested\\\\)parentheses\\\\))$\"}"},"usage":{"promptTokens":1248,"completionTokens":3186,"totalTokens":4438,"responseTimeMs":25091,"generationId":"gen-1742325524-dQRAlUa2MmmibQSTns3o","model":"openai/o3-mini-2025-01-31","generationTime":24746,"cost":0.0154451,"generationStats":{"id":"gen-1742325524-dQRAlUa2MmmibQSTns3o","upstream_id":"chatcmpl-BCWkWfxREW5bYENhJlqIdJcmGJadp","total_cost":0.0154451,"cache_discount":null,"provider_name":"OpenAI","created_at":"2025-03-18T19:19:09.669833+00:00","model":"openai/o3-mini-2025-01-31","app_id":2237495,"streamed":true,"cancelled":false,"latency":23158,"moderation_latency":176,"generation_time":24746,"tokens_prompt":1248,"tokens_completion":3186,"native_tokens_prompt":1237,"native_tokens_completion":3201,"native_tokens_reasoning":2944,"num_media_prompt":null,"num_media_completion":null,"num_search_results":null,"origin":"https://llm-olympics.com/","is_byok":false,"finish_reason":"tool_calls","native_finish_reason":"tool_calls","usage":0.0154451}}}