Card Counting in Blackjack
What is card counting?
Card
counting is a blackjack strategy that tracks the ratio of
high cards (cards worth ten and/or eleven) to low cards still in the
deck. A deck that is rich in high cards offers a player an advantage
over a deck that isn't, because a player is more likely to receive a
blackjack. And since a blackjack pays out at 3 to 2, raising the size of
your bet when a blackjack is more likely results in a long term
mathematical advantage.
Other factors that add to the mathematical edge include the greater chance the dealer has of busting a stiff hand when the deck is rich in high cards, and doubling down becomes more profitable when there are a lot of high cards left in the deck.
How hard is card counting?
You don't have to be a genius to count cards. You do need to be able to concentrate in conditions which aren't favorable for concentration. (casino conditions) You also need the self-discipline to sit down and master the actual skills involved before trying to count cards in a casino. Most casinos bar card counters from playing their blackjack games, so you have to be able to keep track of the ratio of cards without looking like you're counting. That part is probably harder than the actual counting.
Counting cards does not involve keeping track of every card that's been played. A card counting system will give a value to certain cards, usually +1 or -1, and you keep a running total in your head. Based on that running total, you'll raise or lower your blackjack bets.
An easy card counting system
The Wizard of Odds (Michael Shackleford) offers an easy card counting
system called the Wizard's ace five count. The count starts at 0, and
ever ace counts a -1 and every five counts as a +1. You'll bet one unit
when the count is 0 or negative. When the count is positive, you'll bet
two units times the amount of the count, so two units at +1, four units
at +2. six units at +3 and so on.
This strategy is most effective in a six deck game where the dealer stands on a soft 17, late surrender is allowed, and the player is allowed to resplit aces. The strategy yields a small advantage of only 0.22%, but combined with comp drinks and a few other perks you might get for your blackjack play, it could be quite profitable. This counting system has the advantage of being very easy to learn and implement.
Card Counter Message Boards
Card counting discussion archives
There used to be a message board at this URL. (And there might be again one of these days, whenever we get around to adding one.) To find archives of these old posts, please click here: CardCounter.com message archives.
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Card Counting Online
You can't really count cards at online casinos, since they shuffle after every single hand. But you can read about card counting online, and we've included some resources for that purpose below.
- Card Counting Article at Wired - This is one of my favorite articles on the subject. It's basically an abbreviated version of the book by Ben Mezrich.
- Card Counting Movie Trailer - From the upcoming Kevin Spacey film, 21, which looks totally awesome.
- Card Counting TV Show on BBC - A summary of what card counting is and their television programme on the subject. Includes q&a and a transcript.
- Card Counting Systems - From Blackjack Hero. Includes details of ten different card counting systems, a history of card counting, and a guide to learning how to count cards.
- Card Counting at Online Blackjack Odds - A detailed, well-written, concise 4 part series of articles about counting cards. A great resource.
- Championship Blackjack - Offers blackjack seminars from a member of the MIT blackjack team.
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