Written by
Alex VasileAlex Vasile has an iGaming background with over five years working in Support and Account / VIP management. He is also an experienced writer covering topics related to gambling legislation and jurisdictions, casino bonuses and wagering requirements and casino games rules.
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| Updated: September 30, 2024
With its low house edge and relatively simple rules, blackjack is a favorite casino game for several generations of gamblers around the world. Since players rely on both luck and skill to win in this game, learning the basic rules and strategies is crucial for long-term success on the blackjack table. In this blackjack guide, beginner players will find simple rules and useful tactics for playing this casino classic the best way possible, depending on the variety of Twenty-One they have chosen.
Furthermore, online blackjack comes with its specific features that require a different approach. Playing blackjack in online casinos is, in many ways, much simpler than playing against the dealer in a brick-and-mortar establishment. Still, it is important to know the differences between the most popular variations and between the releases of the largest software providers.
In the following sections, we have listed the basic rules of online blackjack, several simple strategies, as well as short descriptions of the versions created by leading gaming studios. This blackjack guide is recommended for all beginners but even seasoned players may find useful information for improving their skills and strategies.
Blackjack Moves
Once players are dealt two cards at the beginning of each round, they need to decide what action to take next in order to beat the dealer. If their initial hand is blackjack, they automatically win. In all other instances, they are given several options – to take more cards, to end their turn, etc.
Hit
Stand
Double
Split
Take Insurance
Surrender
Dealer’s Decisions
Hit
Players who request more cards need to opt for Hit and they will be dealt one additional card. Of course, Hitting is recommended if the total of the first two cards is a low value – 10, for instance (6,4).
Stand
When players receive an initial hand of 16 or 17 (or more), this is a high-value hand and they are advised to Stand, i.e. to refuse any additional cards. With this move, they effectively end their turn.
Double
Doubling down is a preferred option for players who believe they are likely to beat the dealer in the current round – when their hand is 19 or 20, for instance. Doubling your bet is usually allowed only on the first two cards or after a Split – your bet is doubled and you receive an additional, final card to your hand.
Split
This option is available only when the player’s initial hand is a pair – when it consists of two cards of the same value. When players decide to Split, they end up with two hands of one card and another card will be dealt to each of them. In addition, another bet equal to the original bet is placed.
Take Insurance
Insurance is a side bet equal to half of the original stake and when players purchase it, they insure against the dealer having blackjack. This option is available only if the dealer’s face-up card is an Ace. Insurance wins only when the dealer has blackjack and it pays 2:1.
Surrender
In some games, players are allowed to Surrender half their bet to the casino after the dealer checks for blackjack. When you surrender, you lose only half of your initial stake.
Dealer’s Decisions
In addition, there is one important rule beginner players need to understand and it involves the decisions made by the dealer. The dealer never Splits, Doubles or Surrenders. In some games, he is required Hit on Soft 17, i.e. a hand consisting of an Ace and totaling 17. In other games, the dealer must Stand on all 17s.
Blackjack Software
As blackjack remains the most popular casino game online, most leading developers of casino game software have released their own versions of this casino classic. In addition to the wide range of virtual games, some software providers also have different variations of live dealer blackjack. Below, you can see what the biggest names in this industry have to offer.
Playtech Blackjack
Microgaming Blackjack
NetEnt Blackjack
RTG Blackjack
Playtech Blackjack
Playtech is one of the largest software development companies in the online gambling industry and it has a nice range of blackjack variations. Most of its games follow the standard Las Vegas rules and use 6 decks of 52 cards. There are also several unconventional titles such as Blackjack Switch, Lucky Blackjack, and 21 Duel.
Microgaming Blackjack
Microgaming is probably the gaming studio with the largest collection of blackjack variations in its portfolio – some are played with 2 decks of cards but others use 8 decks, while there are also single-deck versions. Along with the multiple classic blackjack games, Microgaming has a wide range of interesting, untraditional versions of Twenty-One.
NetEnt Blackjack
The Swedish casino software provider creates some of the most stunning virtual and live blackjack games. Most versions are released in the Classic and the Professional Series and are usually played with 4 standard decks. NetEnt also has a special range of mobile blackjack games.
RTG Blackjack
RealTime Gaming, better known as RTG, has also developed various blackjack games in both instant-play and downloadable format. Online casinos are allowed to customize the games but they usually opt for 6 decks of cards and standard, American-style rules and gameplay. RTG also has several European versions of blackjack where the dealer draws a single card at the start of the round.
Blackjack Variations
Over the years, multiple variations of blackjack have been created as nearly every casino and gambling establishment has tried to introduce some changes to the standard rules. Some of these variations have remained, while others have been further altered to either attract more players or increase the house edge. Today, there are more than a hundred different versions of online blackjack and new games are being released on a regular basis.
European Blackjack
Spanish 21
Atlantic City Blackjack
Blackjack Switch
Double Exposure
Perfect Pairs
European Blackjack
European blackjack is usually played with 8 decks, but some versions also use 4 or 6 decks of cards. The game has no hole card – the dealer draws only one initial card so peeking for blackjack is not an option. The dealer typically stands on Soft 17, while doubling is allowed only on hard 9, 10, and 11.
Spanish 21
In this interesting variation, all Tens are removed and 6 to 8 decks are used. Typically, all ties are won by the player and there are bonus payouts for 21 hands of 5 cards or more, as well as for getting three Sevens for a total of 21. In addition, Late Surrender rule may apply.
Atlantic City Blackjack
This variation is played with 8 standard decks of cards and the dealer stands on all 17s, a rule that is advantageous to the player. In fact, most of the rules here benefit the player, including the Late Surrender and the fact that you can Split up to 3 times.
Blackjack Switch
Blackjack Switch uses 6 standard decks of cards and the player is dealt two hands instead of one. The main difference from the standard rules is that players are allowed to switch the top cards of these two hands if they want to. Blackjack pays 1:1 and dealer’s hands of 22 are tied with all player’s hands, except for blackjack.
Double Exposure
In this variation, the dealer’s two cards are dealt face-up, hence the name of the game. Players are not allowed to buy Insurance or to Surrender and blackjack typically pays evenly (1:1). Players lose all ties.
Perfect Pairs
This game allows a side bet called Perfect Pairs to be made – players win it if they get a colored, mixed or perfect pair. The payouts for the side bet vary but usually, they reach 30:1 for having a hand that is a perfect pair. The game uses 2, 4 or 5 decks of cards and the dealer always stands on Soft 17.
Blackjack Strategies
Whether you play blackjack at a land-based casino or online, you should employ a certain strategy if you wish to increase your chances of winning. As blackjack is based on odds and mathematics, experts have developed a wide range of mathematically proven strategies for winning this game. Still, the only way to turn the odds in your favor and guarantee your success is to learn how to count cards – a complex practice for highly skilled individuals whose purpose is to calculate the probability of getting a good or bad card in the next deal.
Hi-Lo Count
10-Count System
KO Count
Uston SS Count
Shuffle Tracking System
Basic Strategy
Hi-Lo Count
This is the simplest and most basic card counting method, developed by mathematician Harvey Dubner in the 1960s. Giving a value of -1, +1 or 0 to all cards, this system is quite a simple way of keeping track of the high cards left in the deck – low cards (2-6) are +1, middle cards (7-9) are 0, and high cards are -1. The total value of the deck is 0.
10-Count System
This is the first known system of card counting and it was introduced by MIT mathematics professor Edward Thorpe. This method was fundamental in the development of many other systems, as well, although it is considered to be quite complex and difficult to implement by casual players.
KO Count
The Knockout Card Counting system is similar to the Hi-Lo method but it considers the Seven a low card, thus giving it a value of +1. Players who use this system will end up with a total count of plus 4 for the deck.
Uston SS Count
This system is a bit more complex than the Hi-Lo and, at the same time, it is more accurate. Instead of using 3 values for the different cards, it uses 6 – 2, 4, and 6 count as 2; 5 counts as 3; while 7 is 1 and 8 counts as 0. The high cards have the following values – 9 counts as -1 and cards from 10 to Ace count as -2.
Shuffle Tracking System
This is an advantage play technique, which allows players to keep track of a series of high cards in the shuffle. This method is highly unreliable on its own, which is why it is often combined with different card counting systems. It is also useless in online blackjack.
Basic Strategy
The Basic Blackjack Strategy is a method of playing, which is based on making the right decisions for every single hand or side bet. It does not involve counting of the cards, tracking the shuffle, or any other advantage play method. With Basic Strategy, recreational players can cut the house edge to its absolute minimum.