{"id":123361,"date":"2022-09-17T11:25:14","date_gmt":"2022-09-17T18:25:14","guid":{"rendered":"https:\/\/www.lasvegasadvisor.com\/gambling-with-an-edge\/?page_id=123361"},"modified":"2024-01-25T13:04:34","modified_gmt":"2024-01-25T21:04:34","slug":"estimation-of-true-count-using-the-red-7","status":"publish","type":"post","link":"https:\/\/www.lasvegasadvisor.com\/blog\/estimation-of-true-count-using-the-red-7\/","title":{"rendered":"Estimation of True Count Using the Red 7:"},"content":{"rendered":"\n

Sensitivity of Blackjack True Count to Errors in Estimating Decks Remaining<\/h4>\n\n\n\n

by Conrad Membrino<\/strong>
\u00a9 Blackjack Forum 1990<\/strong><\/p>\n\n\n\n

rc.r7 = red 7 running count
n = number of decks
tc = true count
dr = decks remaining<\/p>\n\n\n\n

rc.r7 = 2*n + (tc – 2) * dr<\/p>\n\n\n\n

Number of Decks = 8<\/p>\n\n\n\n

Red-7 Running Counts corresponding to various True Counts for an Eight deck game<\/p>\n\n\n\n

Eight Deck Game<\/td>rc.r7<\/td><\/tr>
rc.r7 = 23456 + (7p\/2) – TAp<\/td>decks played<\/td><\/tr>
tc<\/td>rc.r7<\/td>3<\/td>4<\/td>5<\/td>6<\/td>7<\/td><\/tr>
2<\/td>16<\/td>16<\/td>16<\/td>16<\/td>16<\/td>16<\/td><\/tr>
3<\/td>16 + dr<\/td>21<\/td>20<\/td>19<\/td>18<\/td>17<\/td><\/tr>
4<\/td>16 + 2*dr<\/td>26<\/td>24<\/td>22<\/td>20<\/td>18<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Estimation of true count with the Red 7 in an Eight Deck Game:<\/p>\n\n\n\n

  1. Estimate decks remaining<\/li>
  2. Compare Red 7 running count with 16, 16 + dr, or 16 + 2*dr for true counts of 2, 3, or 4<\/li>
  3. Use calculated true count with High-Low strategy indicies.<\/li><\/ol>\n\n\n\n

    Sensitivity of True Count to Errors in Estimating Decks Remaining:<\/p>\n\n\n\n

    1. The Closer to the Pivot Point, the less sensitive the true count is to errors in estimating the decks remaining.<\/li>
    2. At the pivot point, ther true count is independent of the decks remaining<\/li>
    3. Pivot Point of the Red 7: True Count = 2<\/li>
    4. Pivot Point of High-Low: True Count = 0<\/li>
    5. At True Counts = 2:
      (a) Red 7 is closer to its pivot point (tc=2) than the High-Low is to its pivot point (tc=0)
      (b) Red 7 is less sensitive to errors in estimating decks remaining when calculating true count.
      (c) Red 7 gives more accurate true counts than High-Low.<\/li><\/ol>\n\n\n\n

      Example:<\/p>\n\n\n\n

      A = Actual
      E = Estimated
      dr:a = actual dr
      dr:e = estimated dr
      tc:a = actual tc
      tc:e = estimated tc<\/p>\n\n\n\n

      Eight Decks<\/p>\n\n\n\n

      r7 = red 7<\/td>hi = high-low<\/td><\/tr>
      tc.r7 = 2 + (rc.r7 – 16) \/ dr<\/td>tc.hl = rc.hl \/ dr<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

      Eight Decks
      dr:a = 4 and tc:a = 3<\/p>\n\n\n\n

      <\/td><\/td>Red 7<\/td><\/td><\/td>High-Low<\/td><\/tr>
      <\/td><\/td>estimated<\/td>error<\/td><\/td>estimated<\/td>error<\/td><\/tr>
      dr:e<\/td>rc.r7<\/td>tc:e<\/td>(tc:e – tc:a)<\/td>rc.hl<\/td>tc:e<\/td>(tc:e – tc:a)<\/td><\/tr>
      6<\/td>20<\/td>2.7<\/td>-0.3<\/td>12<\/td>2.0<\/td>-1.0<\/td><\/tr>
      5<\/td><\/td>2.8<\/td>-0.2<\/td><\/td>2.4<\/td>-0.6<\/td><\/tr>
      4<\/td><\/td>3.0<\/td>0.0<\/td><\/td>3.0<\/td>0.0<\/td><\/tr>
      3<\/td><\/td>3.3<\/td>0.3<\/td><\/td>4.0<\/td>1.0<\/td><\/tr>
      2<\/td><\/td>4.0<\/td>1.0<\/td><\/td>6.0<\/td>3.0<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"

      Sensitivity of Blackjack True Count to Errors in Estimating Decks Remaining by Conrad Membrino\u00a9 Blackjack Forum 1990 rc.r7 = red 7 running countn = number of deckstc = true countdr = decks remaining rc.r7 = 2*n + (tc – 2) * dr Number of Decks = 8 Red-7 Running Counts corresponding to various True Counts […]<\/p>\n","protected":false},"author":55,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"categories":[631,1],"tags":[],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.lasvegasadvisor.com\/shop\/wp-json\/wp\/v2\/posts\/123361"}],"collection":[{"href":"https:\/\/www.lasvegasadvisor.com\/shop\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lasvegasadvisor.com\/shop\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lasvegasadvisor.com\/shop\/wp-json\/wp\/v2\/users\/55"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lasvegasadvisor.com\/shop\/wp-json\/wp\/v2\/comments?post=123361"}],"version-history":[{"count":0,"href":"https:\/\/www.lasvegasadvisor.com\/shop\/wp-json\/wp\/v2\/posts\/123361\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.lasvegasadvisor.com\/shop\/wp-json\/wp\/v2\/media?parent=123361"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lasvegasadvisor.com\/shop\/wp-json\/wp\/v2\/categories?post=123361"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lasvegasadvisor.com\/shop\/wp-json\/wp\/v2\/tags?post=123361"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}