Counting cards is an ability which is employed by players of card games to achieve an edge by following cards that have been used. This provides the gambler a notion of the sum of cards, which have to be dealt with. Counting cards is an ability that has more use in blackjack than in any other card game.

In chemin de fer, a gambler is at an advantage when the remaining shoe holds "high cards." High cards could be tens or aces. The card counter in the gambling den brings into play these situations by laying bigger wagers, as and when they occur. Most accomplished players use the composition of the shoe to adjust their overall course of action. Inexperienced players sometimes will have problems while performing rapid card counting and might be subject to errors, when it comes to handling dealt decks of cards. Vingt-et-un card counting is an industry by itself. Millions are won or lost, both by the players and the gambling halls, depending on card counting schemes in play.

Computing has made its impact on counting cards too, with enhanced computing power impacting the entire process. Long-established gamblers will vow that a more complex card counting approach is more subject to problems, negating the extra accuracy allowed by the application of technology. One can discover a lot of game plans for chemin de fer card counting by going net pages dedicated to 21. With the game increasing in acceptance in gambling dens around the world, there are better techniques being created every other day. One can dig up literally a multitude of Web sites providing you hints on card counting and the all-around plan to earn cash through black jack.