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Blackjack basic strategy
Most of a strategy chart is edge cases. Four rules cover almost every hand you will actually be dealt.
Hit 11 or under. Stand on 17 or more. Let the dealer's card decide 12 to 16. Split aces and eights.
The point is basic strategy for the great majority of hands. The chart exists for the rest.
The four rules
| Your hand | Do this | Because |
|---|---|---|
| Hard 11 or less | Hit | No single card can bust you |
| Hard 17 or more | Stand | Most of the deck busts you from here |
| Hard 12 to 16 | Dealer 2–6: stand Dealer 7–A: hit | The only genuinely difficult range |
| A A or 8 8 | Split | Two live hands beat one weak one |
Add doubling on 11, 10 and 9 and you have covered essentially everything that comes up.
What basic strategy actually is
Blackjack is not a winning system. It is the set of decisions that are correct given what you can see — your total and the dealer's upcard — and nothing else.
Following it reduces the house edge to well under one percent. It does not remove it, and no sequence of correct decisions changes what the deck deals. Basic strategy is the play that loses least, not the play that wins.
The mistake almost everyone makes
Standing on 15 against a dealer showing ten.
It feels safe. You avoid busting, which feels like avoiding a loss. But the dealer showing ten is probably holding twenty, and fifteen does not beat twenty. Standing there is not caution — it is choosing to lose quietly rather than risk losing loudly.
Hitting fifteen against a ten busts often. It also wins sometimes, and standing wins almost never. See when to hit or stand for the full range.
Why the dealer's card carries more information than yours
The dealer has no choices. They draw to 16 and stand on 17, always. That makes their visible card a genuine predictor — a six will bust more often than not, a ten will usually finish near twenty.
Your own total tells you what you have. Their card tells you what you need. The second is the more useful of the two, which is why every difficult decision in the game references it.
The two house rules that shift things
- Dealer draws on soft 17 — gives the dealer a free chance to improve, and shifts several borderline decisions.
- Doubling restricted to 9, 10 and 11 — removes soft doubling entirely.
Both are posted before play. Neither changes the four rules above.
The four rules, with the numbers behind them
| Rule | The number |
|---|---|
| Hit 11 or under | 0 of 52 cards can bust you |
| Stand on 17 or more | 36 of 52 bust you — 69.2% |
| 12 to 16 is the hard range | Bust risk runs 30.8% to 61.5% |
| Split eights, never stand on 16 | 16 busts 61.5%; an 8 busts 0% |
| Split aces | Each new hand hits 21 on 31.37% of cards |
| Double on 11 | 30.77% of the deck makes it 21 |
Every figure above is a count of a standard deck, not an estimate. The average card is worth 7.31 points with aces at eleven, and that single number is why the thresholds fall where they do.
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Common questions
What is basic strategy in Blackjack?
The set of decisions that are mathematically correct for every combination of your total and the dealer's upcard. It is not a system for winning; it is the play that loses least.
Does basic strategy guarantee you win at Blackjack?
No. It reduces the house edge to well under one percent but does not remove it. Basic strategy makes each decision correct; it cannot change what the deck deals.
Do you need to memorise a chart to play Blackjack well?
No. Four rules cover the large majority of hands: hit 11 or under, stand on 17 or more, use the dealer's card to decide 12 to 16, and split aces and eights.
What is the most common Blackjack mistake?
Standing on 12 to 16 against a dealer showing 7 or higher. It feels safe because you avoid busting, but a weak total against a strong dealer card loses far more often than a bust does.
Why does the dealer's upcard matter so much?
Blackjack is the only information you have about the hand you are trying to beat, and the dealer has no choices — so their visible card predicts their outcome far better than your own total predicts yours.
Is basic strategy the same at every table?
Almost. Two house rules shift a few decisions: whether the dealer draws on soft 17, and whether doubling is restricted to certain totals.
Correct play becomes automatic through repetition, not memorisation. A free Blackjack game download for Android.
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References
- Blackjack on Wikipedia, the reference article on the game