# Card counting { "id": "S2003009173", "title": "Card counting", "url": "/topics/S2003009173", "kind": "topic-directory", "aeo_cohort": "topic-directory", "provider": "lcsh", "revision": "7a4a6dff5f632d8d", "catalogue_revision": "f050b5d4780b1289", "numeric_address": "5190482160913900098", "address_version": "morton4x16-v1", "coordinates": [ 0, 477, 36346, 21504 ], "answer_status": "Directory metadata; local answer requires separate source review", "truth_status": "Subject descriptor, not a factual answer or a demonstrated knowledge gap" } Here are entered works on systems and techniques used to determine the number and value of undealt cards in games such as blackjack and poker, including casino and cardroom responses to such activity. Directory metadata is not a factual answer or evidence of a global knowledge gap. Source: https://id.loc.gov/authorities/subjects/sh2003009173 No owner-reviewed local answer yet.