The deal, step by step

At the start of a round, everyone at the table — including the dealer — is dealt two cards. Players’ cards are usually face up; the dealer takes one card face up and one face down, called the hole card. That single hidden card is the whole tension of blackjack: you’re always playing against information you can’t fully see.

If your first two cards are an Ace plus any ten-value card, that’s a blackjack — an instant 21 that normally pays 3:2 and beats every other hand except another blackjack. Deal a few rounds below to see how often it shows up.

Why the count never stops at two

After the deal, the number of cards in your hand is entirely up to you. Hit and you take one more; keep hitting and a hand can grow to five, six, even more cards before you stand. You can double down — take exactly one more card for a doubled bet — or split a pair into two separate hands, each then dealt a second card.

So “how many cards are dealt” has a floor of two and no fixed ceiling. The dealer, by contrast, has no choice at all: house rules force them to hit until they reach 17 and then stop. That asymmetry — your judgement against their fixed rule — is exactly what basic strategy exploits.

The chart isn’t opinion — it’s arithmetic

The trainer at the top isn’t a hunch. Every cell is the play that, run across millions of simulated hands, loses the least or wins the most. Followed perfectly, basic strategy drops the house edge in a common multi-deck game to around 0.5% — among the lowest in any casino.

It was worked out before computers were everyday tools. In 1956, four US Army mathematicians — Roger Baldwin, Wilbert Cantey, Herbert Maisel and James McDermott, later nicknamed the “Four Horsemen” — published the first optimal strategy using desk calculators. Edward Thorp then refined it with an IBM 704 and laid out card counting in his 1962 book Beat the Dealer, the work that forced casinos to change their rules.

One quirk that drives every decision

Why does the chart treat a “soft” hand so differently from a “hard” one? Because the Ace is worth either 1 or 11, a hand like Ace-6 can’t bust on the next card — it’s a “soft 17” that becomes a hard 17 only if a big card lands. That dual value is the hinge the whole strategy turns on. We pull it apart on the companion page, how many points a blackjack hand is worth.

Sources

• Blackjack Apprenticeship — basic-strategy charts for 4–8 deck, dealer-stands-soft-17 games (hard, soft and pair plays used in the trainer).
• Baldwin, Cantey, Maisel & McDermott, “The Optimum Strategy in Blackjack,” Journal of the American Statistical Association, 1956.
• Edward O. Thorp, Beat the Dealer (1962) — first published card-counting system and ~0.5% house-edge figure.
• William Hill / Vegas-Aces strategy guides — soft-17 rule and deck-count effects on the chart.

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