BlackJack
Blackjack, also known as twenty-one, is one of the most popular casino card games in the world. Much of blackjack's popularity is due to the mix of chance with elements of skill and decision making, and the publicity that surrounds the practice of card counting, a skill with which players can turn the odds of the game in their favor by making betting decisions based on the values of the cards known to remain in the deck. Blackjack's precursor was vingt-et-un ("twenty-one"), which originated in French casinos around 1700, and did not offer the 3:2 bonus for a two-card 21.
When blackjack was first introduced in the United States it wasn't very popular, so gambling houses tried offering various bonus payouts to get the players to the tables. One such bonus was a 10-to-1 payout if the player's hand consisted of the ace of spades and a black Jack (either the Jack of clubs or the Jack of spades). This hand was called a "blackjack" and the name stuck even though the bonus payout was soon abolished.
As in all casino games, the house has a statistical advantage over the players that will play itself out in the long run. But because blackjack, unlike other games, has an element of player choice, players can actually reduce the casino advantage to a small percentage by playing what is known as basic strategy. This strategy determines when to hit and when to stand, and also determines when doubling down or splitting is the correct action. Basic strategy is based on the player's point total and the dealer's visible card. There are slight variations in basic strategy depending on the exact house rules and the number of decks used. Under the most favorable conditions (single deck, downtown Las Vegas rules), the house advantage over a basic strategy player can be as low as 0.16%. Indeed, casinos offering special rules like surrender and double-after-split may actually be offering a positive expectation to basic strategy players; they are counting on players making mistakes to make money.
The following rules are beneficial to the player:
- Doubles are permitted on any two-card hand except a blackjack.
- Doubles are permitted after splitting.
- Early surrender; the ability to forfeit half your wager against a face or ace before the dealer checks for blackjack.
- Normal (aka "late") surrender.
- Resplitting Aces.
- Drawing more than one card against a split Ace.
- Five or more cards with the total still no more than 21 as an automatic win (a "Charlie")
SOURCE: http://en.wikipedia.org/wiki/Blackjack
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