Online Blackjack strategy

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Quick Blackjack Rules Recap
Blackjack is played against the dealer with one goal: finish with a hand closer to 21 than the dealer without going over 21. Players place their bets before any cards are dealt. Each player receives two face-up cards. Number cards count as their value, face cards count as 10, and Aces count as 1 or 11. The dealer has one face-up card and one face-down hole card in most standard games. Players can hit to take another card or stand to keep their total. Players can hit multiple times until they stand or bust. If a player busts, they lose immediately, regardless of what the dealer later draws. After all players have acted, the dealer plays according to fixed rules, typically hitting on 16 or less and standing on 17 or higher. This recap exists only to support the strategy context.
Essential Blackjack Strategy Terms
To understand blackjack strategy charts and recommendations, you need a small set of standard terms. These definitions are listed alphabetically so you can quickly reference them as you learn. Knowing this vocabulary makes charts easier to read and prevents confusion when rules or options change between tables.
- Blackjack or Natural: An Ace plus a 10-value card on the first two cards. Typically pays 3:2, so a $10 bet wins $15.
- Bust: A hand total over 21. A bust loses automatically and ends the hand immediately.
- Double Down or Doubling: Placing an equal additional bet after the first two cards and receiving exactly one more card only.
- Hard or Hard Hand: A hand with no Ace counted as 11, such as 10 plus 7 for a hard 17.
- Hit: Requesting another card to increase your hand total. You may hit multiple times unless the table limits the number of cards per hand.
- Insurance: A side bet up to half your original wager when the dealer shows an Ace. Pays 2:1 if the dealer has a blackjack. Generally not recommended.
- Push: A tie with the dealer. The original bet is returned if both finish with 19.
- Soft or Soft Hand: A hand where an Ace counts as 11, such as Ace plus 6 for soft 17. Soft hands can hit more safely.
- Split: Separating two equal cards into two hands, placing an equal additional bet, then playing each hand independently.
- Stand or Stay: Keeping your current hand total and ending your turn with no additional cards.
- Surrender: Giving up the hand before the dealer completes play to recover half the bet. Best when losing is highly likely. Not always offered.
Basic Blackjack Strategy
To play blackjack well, you have to make the right decision repeatedly, and there are more situations than most players expect. Basic strategy is the simplified, practical version of optimal play that most players can actually memorize. It is not always perfectly optimal for every rule variation, but it is almost always correct and produces strong results under typical casino rules. The performance gap between the basic and perfect strategies is small in real play. For many common games, the difference is roughly the equivalent of a small fraction of a hand per hour, not a dramatic swing. Basic strategy also puts new players far ahead of uninformed players who rely on instincts or table myths. If you want a single strategy layer that delivers the most value with the least effort, this is it. It is the best starting point before learning a perfect strategy.
Basic Strategy Charts
Strategy charts tell you what to do by comparing two things: your hand and the dealer’s upcard. Your hand total appears on the left, and the dealer’s showing card appears along the top or in grouped columns. The chart output tells you the correct action for that situation. These simplified tables are designed to be easy to learn and to cover the most common decisions.
Hard Hands Table
| Your Hand | Dealer Showing 2-6 | Dealer Showing 7-A |
|---|---|---|
| 4 to 8 | HIT | HIT |
| 9 | DOUBLE | HIT |
| 10 or 11 | DOUBLE | DOUBLE if more than dealer* |
| 12 to 16 | STAND | HIT |
| 17 to 21 | STAND | STAND |
*Explanation: If you have 10 and the dealer shows 9 or less, double. If the dealer shows 10 or Ace, hit. If you have 11, double if the dealer shows 10 or less. If the dealer shows an Ace, hit.
Soft Hands Table
| Your Hand | Dealer Showing 2-6 | Dealer Showing 7-A |
|---|---|---|
| 13 to 15 | HIT | HIT |
| 16 to 18 | DOUBLE | HIT |
| 19 to 21 | STAND | STAND |
Splits Table
| Your Pair | Dealer Showing 2-6 | Dealer Showing 7-A |
|---|---|---|
| 2/2, 3/3, 6/6, 7/7, 9/9 | YES | NO |
| 8/8, A/A | YES | YES |
| 4/4, 5/5, 10/10 | NO | NO |
Note: If you do not split, treat the hand as a hard hand. Example: two 7s not split becomes a hard 14.
Additional Basic Strategy Rules
- Surrender Rule: Surrender if you have 16 and the dealer shows 10. If surrender is not allowed, hit instead.
- Doubling Exception: If the strategy says double but doubling is not allowed, hit instead. Exception: if you have soft 18 and doubling is not allowed, stand.
- Insurance Rule: Never take insurance. When the dealer shows an Ace, insurance is offered up to half the original bet. It pays 2:1 if the dealer has blackjack. If the dealer does not have blackjack, it loses. It is mathematically unfavorable for most players.
- Even Money Rule: Never take even money on blackjack. If you have blackjack and the dealer shows an Ace, even money offers a guaranteed 1:1 payout. Example: a $10 bet wins $10 instead of the usual $15 at 3:2. If you decline and the dealer also has blackjack, the hand is a push, and you get your original bet back. Declining even money has better long-term value.
Perfect Blackjack Strategy
Basic strategy is extremely strong, but it is not always flawless because blackjack rules vary. A perfect strategy is the fully optimized version that accounts for rule details that basic charts simplify away. The correct play can change depending on the number of decks and whether the dealer stands on soft 17 or hits on soft 17. Perfect strategy also accounts for option rules such as double restrictions, surrender availability, and double after split. Most casinos run multi-deck shoe games, often six decks, while single-deck games exist but are less common. Dealer standing on a soft 17 generally improves the player's odds compared to the dealer hitting a soft 17. Perfect strategy reduces the house edge to the minimum possible for that exact ruleset, but it requires more memorization and often multiple chart versions. For serious players who want maximum mathematical efficiency, it is worth learning because it eliminates avoidable errors.
Understanding Perfect Strategy Chart Abbreviations
Perfect strategy charts often use shorthand to fit all decisions into compact tables. Here are the most common abbreviations:
- H = Hit
- S = Stand
- Dh = Double if allowed, otherwise hit
- Ds = Double if allowed, otherwise stand
- Rh = Surrender if allowed, otherwise hit
- Rs = Surrender if allowed, otherwise stand
- Rp = Surrender if allowed, otherwise do not split
- P = Split
- Ph = Split if double after split allowed, otherwise hit
- Pd = Split if double after split allowed, otherwise double
- Ps = Split if double after split allowed, otherwise stand
Chart format: dealer upcards are listed across the top, and your hand totals appear down the left.
Single Deck Blackjack Perfect Strategy
Single-deck blackjack is known for strong odds when rules are favorable, but it is less common than multi-deck shoe games. Perfect strategy charts for a single deck come in two core sets: dealer stands on soft 17, and dealer hits on soft 17. Each set includes three charts: hard hands, soft hands, and splits. Always check the dealer's soft 17 rule before relying on a chart, because this rule alone can change correct plays in key spots.
Single Deck: Dealer Stands on Soft 17
Hard Hands Chart
| Hard | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| 5-7 | H | H | H | H | H | H | H | H | H | H |
| 8 | H | H | H | Dh | Dh | H | H | H | H | H |
| 9 | Dh | Dh | Dh | Dh | Dh | H | H | H | H | H |
| 10 | Dh | Dh | Dh | Dh | Dh | Dh | Dh | Dh | H | H |
| 11 | Dh | Dh | Dh | Dh | Dh | Dh | Dh | Dh | Dh | Dh |
| 12 | H | H | S | S | S | H | H | H | H | H |
| 13 | S | S | S | S | S | H | H | H | H | H |
| 14 | S | S | S | S | S | H | H | H | H | H |
| 15 | S | S | S | S | S | H | H | H | H | H |
| 16 | S | S | S | S | S | H | H | H | Rh | Rh |
| 17+ | S | S | S | S | S | S | S | S | S | S |
Soft Hands Chart
| Soft | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| 13 | H | H | Dh | Dh | Dh | H | H | H | H | H |
| 14 | H | H | Dh | Dh | Dh | H | H | H | H | H |
| 15 | H | H | Dh | Dh | Dh | H | H | H | H | H |
| 16 | H | H | Dh | Dh | Dh | H | H | H | H | H |
| 17 | Dh | Dh | Dh | Dh | Dh | H | H | H | H | H |
| 18 | S | Ds | Ds | Ds | Ds | S | S | H | H | S |
| 19 | S | S | S | S | Ds | S | S | S | S | S |
| 20 | S | S | S | S | S | S | S | S | S | S |
Splits Chart
| Splits | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| 2,2 | Ph | P | P | P | P | P | H | H | H | H |
| 3,3 | Ph | Ph | P | P | P | P | Ph | H | H | H |
| 4,4 | H | H | Ph | Pd | Pd | H | H | H | H | H |
| 6,6 | P | P | P | P | P | Ph | H | H | H | H |
| 7,7 | P | P | P | P | P | P | Ph | H | Rs | H |
| 8,8 | P | P | P | P | P | P | P | P | P | P |
| 9,9 | P | P | P | P | P | S | P | P | S | S |
| A,A | P | P | P | P | P | P | P | P | P | P |
Single Deck: Dealer Hits on Soft 17
Hard Hands Chart
| Hard | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| 4-7 | H | H | H | H | H | H | H | H | H | H |
| 8 | H | H | H | Dh | Dh | H | H | H | H | H |
| 9 | Dh | Dh | Dh | Dh | Dh | H | H | H | H | H |
| 10 | Dh | Dh | Dh | Dh | Dh | Dh | Dh | Dh | H | H |
| 11 | Dh | Dh | Dh | Dh | Dh | Dh | Dh | Dh | Dh | Dh |
| 12 | H | H | S | S | S | H | H | H | H | H |
| 13 | S | S | S | S | S | H | H | H | H | H |
| 14 | S | S | S | S | S | H | H | H | H | H |
| 15 | S | S | S | S | S | H | H | H | H | Rh |
| 16 | S | S | S | S | S | H | H | H | Rh | Rh |
| 17 | S | S | S | S | S | S | S | S | S | Rs |
| 18+ | S | S | S | S | S | S | S | S | S | S |
Soft Hands Chart
| Soft | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| 13 | H | H | Dh | Dh | Dh | H | H | H | H | H |
| 14 | H | H | Dh | Dh | Dh | H | H | H | H | H |
| 15 | H | H | Dh | Dh | Dh | H | H | H | H | H |
| 16 | H | H | Dh | Dh | Dh | H | H | H | H | H |
| 17 | Dh | Dh | Dh | Dh | Dh | H | H | H | H | H |
| 18 | S | Ds | Ds | Ds | Ds | S | S | H | H | S |
| 19 | S | S | S | S | Ds | S | S | S | S | S |
| 20 | S | S | S | S | S | S | S | S | S | S |
Splits Chart
| Splits | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| 2,2 | Ph | P | P | P | P | P | H | H | H | H |
| 3,3 | Ph | Ph | P | P | P | P | Ph | H | H | H |
| 4,4 | H | H | Ph | Pd | Pd | H | H | H | H | H |
| 6,6 | P | P | P | P | P | Ph | H | H | H | H |
| 7,7 | P | P | P | P | P | P | Ph | H | Rs | Rh |
| 8,8 | P | P | P | P | P | P | P | P | P | P |
| 9,9 | P | P | P | P | P | S | P | P | S | Ps |
| A,A | P | P | P | P | P | P | P | P | P | P |
4-8 Deck Blackjack Perfect Strategy
Most casinos use multi-deck shoe blackjack, and six decks is the most common configuration. For practical purposes, a perfect strategy for 4 to 8 decks is very similar, with only minor differences compared to a single deck. As with single deck, you need two chart sets based on whether the dealer stands on soft 17 or hits on soft 17. Each set includes hard hands, soft hands, and splits. If you learn only one perfect strategy ruleset, multi-deck is the one that applies most often in real play.
4-8 Decks: Dealer Stands on Soft 17
Hard Hands Chart
| Hard | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| 4-8 | H | H | H | H | H | H | H | H | H | H |
| 9 | H | Dh | Dh | Dh | Dh | H | H | H | H | H |
| 10 | Dh | Dh | Dh | Dh | Dh | Dh | Dh | Dh | H | H |
| 11 | Dh | Dh | Dh | Dh | Dh | Dh | Dh | Dh | Dh | H |
| 12 | H | H | S | S | S | H | H | H | H | H |
| 13 | S | S | S | S | S | H | H | H | H | H |
| 14 | S | S | S | S | S | H | H | H | H | H |
| 15 | S | S | S | S | S | H | H | H | Rh | H |
| 16 | S | S | S | S | S | H | H | Rh | Rh | Rh |
| 17+ | S | S | S | S | S | S | S | S | S | S |
Soft Hands Chart
| Soft | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| 13 | H | H | H | Dh | Dh | H | H | H | H | H |
| 14 | H | H | H | Dh | Dh | H | H | H | H | H |
| 15 | H | H | Dh | Dh | Dh | H | H | H | H | H |
| 16 | H | H | Dh | Dh | Dh | H | H | H | H | H |
| 17 | H | Dh | Dh | Dh | Dh | H | H | H | H | H |
| 18 | S | Ds | Ds | Ds | Ds | S | S | H | H | S |
| 19+ | S | S | S | S | S | S | S | S | S | S |
Splits Chart
| Splits | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| 2,2 | Ph | Ph | P | P | P | P | H | H | H | H |
| 3,3 | Ph | Ph | P | P | P | P | H | H | H | H |
| 4,4 | H | H | H | Ph | Ph | H | H | H | H | H |
| 6,6 | Ph | P | P | P | P | H | H | H | H | H |
| 7,7 | P | P | P | P | P | P | H | H | H | H |
| 8,8 | P | P | P | P | P | P | P | P | P | P |
| 9,9 | P | P | P | P | P | S | P | P | S | S |
| A,A | P | P | P | P | P | P | P | P | P | P |
4-8 Decks: Dealer Hits on Soft 17
Hard Hands Chart
| Hard | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| 4-8 | H | H | H | H | H | H | H | H | H | H |
| 9 | H | Dh | Dh | Dh | Dh | H | H | H | H | H |
| 10 | Dh | Dh | Dh | Dh | Dh | Dh | Dh | Dh | H | H |
| 11 | Dh | Dh | Dh | Dh | Dh | Dh | Dh | Dh | Dh | Dh |
| 12 | H | H | S | S | S | H | H | H | H | H |
| 13 | S | S | S | S | S | H | H | H | H | H |
| 14 | S | S | S | S | S | H | H | H | H | H |
| 15 | S | S | S | S | S | H | H | H | Rh | Rh |
| 16 | S | S | S | S | S | H | H | Rh | Rh | Rh |
| 17 | S | S | S | S | S | S | S | S | S | Rs |
| 18+ | S | S | S | S | S | S | S | S | S | S |
Soft Hands Chart
| Soft | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| 13 | H | H | H | Dh | Dh | H | H | H | H | H |
| 14 | H | H | H | Dh | Dh | H | H | H | H | H |
| 15 | H | H | Dh | Dh | Dh | H | H | H | H | H |
| 16 | H | H | Dh | Dh | Dh | H | H | H | H | H |
| 17 | H | Dh | Dh | Dh | Dh | H | H | H | H | H |
| 18 | Ds | Ds | Ds | Ds | Ds | S | S | H | H | H |
| 19 | S | S | S | S | Ds | S | S | S | S | S |
| 20+ | S | S | S | S | S | S | S | S | S | S |
Splits Chart
| Splits | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| 2,2 | Ph | Ph | P | P | P | P | H | H | H | H |
| 3,3 | Ph | Ph | P | P | P | P | H | H | H | H |
| 4,4 | H | H | H | Ph | Ph | H | H | H | H | H |
| 6,6 | Ph | P | P | P | P | H | H | H | H | H |
| 7,7 | P | P | P | P | P | P | H | H | H | H |
| 8,8 | P | P | P | P | P | P | P | P | P | Rp |
| 9,9 | P | P | P | P | P | S | P | P | S | S |
| A,A | P | P | P | P | P | P | P | P | P | P |
How to Learn Blackjack Strategy
Blackjack strategy can look intimidating because charts compress a lot of decisions into a small space. The simplest learning path is to start with a basic strategy, then decide whether a perfect strategy is worth the additional memorization for your play style. The goal is not to study everything at once. It is about building automatic decisions you can execute consistently without hesitation.
For Beginners
Start with a basic strategy and focus on the most common decisions first. You will be correct in most situations, and the mistakes you do make will be less frequent and less costly than playing by instinct. Basic strategy is the best foundation and the fastest way to improve.
Using Charts at the Table
Some casinos allow players to refer to a printed chart, and many online games provide quick access to rules. Still, repeatedly checking charts can slow decisions and may irritate other players in live environments. The practical approach is to use charts for practice, then rely on memory during real play.
Learning Perfect Strategy
Learn one chart set that matches the game you actually play, such as six decks with dealer hits soft 17. Drill one chart category at a time, starting with hard hands, then soft hands, then splits. Use repetition tools such as practice apps, online trainers, or simulated hands. Test yourself until decisions become automatic. If you forget during play, fall back to basic strategy rather than guessing. A perfect strategy can take weeks or months to internalize, depending on how often you practice.
Choosing the Best Blackjack Games
Strategy matters, but the ruleset you choose matters too. A player using a strong strategy at a bad table can still face a steep disadvantage, while a good ruleset makes every correct decision more valuable.
Ideal Blackjack Game Features
- Allowed Options: Look for tables that allow doubling down, doubling after split, and resplitting where possible. Surrender is less common but valuable when available. Fewer player options generally means worse odds.
- Dealer Rules: A dealer standing on a soft 17 is better for the player than a dealer hit on a soft 17. This rule difference meaningfully shifts the house edge, especially over long sessions.
- Payout Structure: Prioritize blackjack paying 3:2. Avoid 6:5 blackjack payouts, which sharply increase the house advantage. A table can look normal while quietly costing you much more through payout reductions.
Common Strategy Mistakes to Avoid
- Taking Insurance: Insurance is not a protective feature in the mathematical sense. It is a separate side bet with unfavorable long-term value for most players.
- Not Splitting Aces and 8s: Splitting Aces creates two strong starting hands. Splitting 8s breaks up a weak 16 into two more playable hands.
- Splitting 10s: A total of 20 is one of the strongest hands in blackjack. Splitting it reduces your chance of winning.
- Playing 6:5 Blackjack: Reduced blackjack payouts significantly increase the house edge, often wiping out much of the strategy’s advantage.
- Ignoring the Dealer’s Upcard: Strategy is built around both hands. Dealer cards 2 through 6 are weak and change correct plays dramatically compared to dealer 7 through Ace.
Conclusion
Blackjack strategy is what turns a simple card game into one of the most favorable casino games for informed players. Basic strategy is easy to learn and delivers results close to perfect play in most common situations. A perfect strategy goes further by accounting for rule variations and eliminating errors, but it requires additional memorization and discipline. The best learning path is to start with a basic strategy, then expand only if you consistently play the same ruleset. Game selection matters as much as decisions, so prioritize 3:2 blackjack payouts, dealer stands on soft 17 when available, and full player options like doubling and splitting. Declining insurance and even money remain one of the most important long-term choices. With the correct strategy and the right table, blackjack offers some of the lowest house edges in the casino.
FAQ's
What is basic blackjack strategy?
How much does blackjack strategy reduce the house edge?
Should I use a basic or a perfect strategy?
Can I bring strategy charts to a casino?
What is the difference between a single-deck and a multi-deck strategy?
Why should I never take insurance in blackjack?
Should I always split Aces and 8s?
What does it mean when the dealer hits on soft 17?
Is card counting the same as blackjack strategy?
How long does it take to learn perfect blackjack strategy?
