Blackjack is a game where you compete against the dealer for a winning hand of cards. It is usually played with one or more 52-card decks, with the value of each card being either its number (for number cards) or face (Jack, Queen and King) cards or an Ace that can be treated as a 1 or 11. You begin the game with two cards and may ask for additional cards (hit) or keep your current hand (stand) based on predetermined rules. If your hand is closer to 21 than the dealer’s, you win and are paid according to a set of rules. If your hand is higher than 21, you bust and lose.

You can also choose to double down (when allowed) on your initial two cards if the dealer’s upcard is anywhere from 2 to 10. This will give you an extra card which increases your chances of getting a strong hand or even blackjack.

Doubling down can be a profitable strategy, but only when done correctly. When you double down, you increase your original bet by up to two times it. This is a good option when you are confident that you will beat the dealer’s hand and are not worried about losing your money if you don’t make it.

Another way to make more money at blackjack is by taking advantage of the rules on splitting pairs. When you have a pair of starting cards such as two nines, two threes or even a couple of eights, it is always worth splitting them into separate hands. By doing so, you place a second bet of the same value on the other hand and play it as a separate hand. You can then hit each of the two new hands until you are satisfied with your total or you bust.

The best way to increase your odds of winning at blackjack is to use a basic blackjack strategy chart. These charts will help you to determine the right move in every situation. They will help you to avoid making mistakes that will cost you more than you can afford to lose.

There are also a number of blackjack side bets that can be placed. These bets are made against the house and can add to your bankroll. Insurance is the most common side bet, but there are hundreds of other variations that can be found on any blackjack table.

When you are playing blackjack, it is important to remember that you are only competing against the dealer and not against the other players at the table. It is easy to get distracted by what other players are doing and if you lose focus, your chances of winning will diminish. The key is to stay focused and to only raise your stakes when you are sure that you can beat the dealer. This way, you can minimize your losses and maximize your wins. You can also practice your skills by playing free online blackjack games.