Card counting is a technique that is employed by gamblers of card games to gain an opportunity by tracking cards that have been played. This gives the player a theory of the value of cards, that have to be dealt with. Card counting is a technique that is more advantageous in 21 than in any other card game.

In vingt-et-un, a gambler is at an advantage when the remaining shoe holds "high cards." Big value cards could be tens or aces. The card counter in the gambling den takes advantage of these circumstances by making larger bets, as and when they happen. Most knowledgeable gamblers use the makeup of the deck to adjust their overall plan. Fairly new gamblers sometimes experience problems while engaged in fast counting and could be prone to mistakes, when it comes to working with dealt decks. Chemin de fer card counting is a business on its own. Millions are won or lost, both by the players and the gambling dens, depending on card counting strategies in play.

Computing has made its impact on counting cards too, with enhanced computing power impacting the entire process. Long-standing gamblers will vow that a card counting scheme of greater complexity is more prone to error, canceling out the additional accuracy permitted by the use of computers. One can dig up many schemes for vingt-et-un card counting by visiting web resources dedicated to the game. With the game increasing in popularity in casinos all over the planet, there are newer strategies being developed every other day. One can dig up easily thousands of Web pages giving you pointers on counting cards and the overall strategy to earn cash through blackjack.