The Truth About Card Counting in Blackjack

Because of pop culture and movies, the concept of card counting is viewed as some kind of magical superpower. Most people believe that to beat the casino, you need a photographic memory capable of instantly memorizing the exact order of all 312 cards in a six-deck casino shoe. This is completely and utterly false. True card counting requires absolutely no memorization. It is actually a basic mathematical tracking system that uses simple addition and subtraction to determine what is left in the deck. Here is exactly how professional blackjack players use simple math to crush the casino.

The Hi-Lo System: The Foundation of Counting

The most popular and effective counting method is the classic Hi-Lo method. Under this strategy, nobody memorizes the deck; they simply assign a tag to every card that comes out of the dealer’s shoe. The small cards (2 through 6) help the casino make hands, so when they are dealt and removed from the deck, the player adds +1 to the count. Face cards and Aces are what the player wants, so when they leave the deck, the count goes down by one. The cards 7, 8, and 9 have very little impact on the math, so they count as zero and require no math.

The Running Count vs The True Count: The Secret to the Bet Size

While the game is being played, the advantage player keeps this simple addition and subtraction in their brain, known as the Running Count. If the table is full of low cards, the count goes way up. A highly positive count is mathematical proof that the remaining cards in the shoe are completely packed with Face cards and Aces. However, in modern casinos, blackjack is dealt from a shoe containing six or eight decks, not just one. To find their actual mathematical advantage, they must find the True Count. This requires dividing the running tally by the physical decks left in the shoe. If the Running Count is +6, and there are 3 decks left, the True Count becomes +2.

• If the count is highly negative, the casino has a massive mathematical advantage. Counters will lower their bets completely or simply walk away from the table.
• When the deck is rich in tens, the player mathematically holds the advantage over the casino. This is exactly when the counter bets the absolute maximum to crush the casino.
• It is not a crime to count cards. You cannot be arrested for math. However, because casinos are private property, they have the legal right to ban you for winning which is called a back-off.
• A high count also changes basic strategy. If the count is +5, basic strategy changes completely because they know a 10 is almost guaranteed to be dealt.

The Hi-Lo Tags: How to Tag the Cards

To show exactly how simple the memorization is, here is a breakdown of the tags assigned to every card in the classic Hi-Lo card counting system.

To wrap up, card counting is not a magical superpower; it is just a grind based on of basic arithmetic. The real difficulty of beating the casinos does not lie in the arithmetic. The challenge is maintaining perfect focus in a loud, distracting casino, managing a huge bankroll, and acting like a normal, clueless tourist so that the casino security team does not realize you are systematically destroying their house edge. It is a tough way to make an easy living, but it is the only mathematically proven way to legally beat the casino at their own game.