Blackjack

Beat the dealer by getting closer to 21 without going bust.

FAQ

How do I play Blackjack?

You play against the dealer: face cards count 10 and an ace counts 1 or 11. Hit for more cards, then stand when you are happy; going over 21 busts and loses. Beat the dealer without busting to win double your bet back.

What are the dealer rules?

The dealer's second card starts face down. Once you stand, the dealer reveals it and draws automatically until reaching at least 17 (soft 17 stands). If the dealer busts, every player hand that did not bust wins.

How do Double and Blackjack pay?

With your first two cards you may Double: the bet doubles and you receive exactly one more card. A natural 21 on the first two cards is a blackjack and pays 3 to 2 (fractional chips rounded down); if the dealer also has blackjack, the round is a push and your bet is returned.

What happens when I run out of chips?

When your chip count reaches zero the game-over screen appears; tap Play again to restart with a fresh 1000 chips. Your best chip total is stored locally in your browser and never uploaded.

How to use

Pick a chip and deal
Choose your stake at the top (10/25/50/100) and press Deal. The bet leaves your bankroll immediately, and both hands receive two cards. The second dealer card stays face down.
Learn the count in a minute
Cards 2 to 10 count face value, J/Q/K count 10, and an ace is 1 or 11. An ace plus a face card is an instant 21, called Blackjack. The goal is simple: finish closer to 21 than the dealer without going over.
Hit or stand
Press Hit for another card. Over 21 busts and loses at once. Press Stand when you are done, and the dealer reveals the hole card then draws automatically to at least 17. Keyboard: H to hit, S to stand.
Double down on strong starts
With your first two cards you may Double: the bet doubles, and you take exactly one more card. The hand then stands automatically. A two-card 11 is the classic doubling spot.
Settle and go again
A win returns twice your bet, a push returns it, and a natural blackjack pays 3 to 2. Run out of chips and the game-over screen offers a fresh 1000 to start again.

About this tool

Blackjack grew out of Vingt-et-Un, a French casino game of the 1600s, and is now among the most played card games worldwide. Its lasting appeal comes from real decision space hidden inside simple rules. Every upcard is information, and hitting, standing or doubling at the right moment shapes your long-run results. Compared with pure luck games, blackjack rewards good decisions.

This build uses common casual rules. The dealer stands on all 17s including soft 17, blackjack pays 3 to 2, and doubling is allowed on the first two cards. The shoe reshuffles itself when it runs low. Chips and your best total are stored locally in the browser. A round takes well under a minute: long enough to practise basic strategy, short enough to play on a whim.

How it works

Basic strategy is dealer bust rates turned into a table. With a 2 through 6 showing, the dealer busts roughly forty percent of the time. A 7 or higher drops that to the low twenties. That is why hard 12 to 16 stands against small cards and hits against big ones, because waiting to lose is worse than drawing. The chart is the expected-value optimum from billions of simulated hands, not a feeling. Memorise it and your results sit close to the theoretical floor, with the short-term swings left to luck.

Blackjack is one of the few classic card games that can genuinely be computed. Perfect basic strategy holds the house edge near half a percent, while loose play widens it past two percent. The whole gap comes from decision quality. In 1962 Ed Thorp used early computers to show that card counting could flip the advantage, and casinos answered with multi-deck shoes. The auto-reshuffling shoe in this build is a relic of that arms race. The name itself came from an early casino bonus on an ace of spades with a black jack; the payout vanished, the label stayed.

When to use it

Basic strategy drills
Keep the chart beside you, play the table on every hand, and dozens of hands pass in a few minutes. No real money is at stake, and a reset costs nothing, which makes this the cheapest classroom a strategy table gets.
A probability intuition lab
Why stand on 16 against a 6 but hit against a 10? Play a few dozen hands, then reread the bust-rate table, and the once-arbitrary rules turn into visible distributions.
Micro-decisions between tasks
Each hand asks three or four small questions, hit, stand or double, and settles in well under a minute. That makes it a tidy palate cleanser between work sessions rather than a time sink.

Tips & tricks

Basic strategy in one line: hit hard 12–16 against a dealer 7 or higher, stand against 2–6 and let the dealer bust.
Double 11 without hesitation: one more big card makes 18 to 21, the best long-run expectation in the game.
Do not copy the dealer and freeze on 17: against a strong upcard, drawing one more below 17 is often better than waiting to lose.

Things to watch

Treating 17 as gospel
The dealer stands on 17 as a rule, not as advice. Hard 16 against a dealer 10 actually plays better on a hit than a stand. Copying the house logic is the most common rookie error.
Doubling on feeling
Double earns its keep when a strong hand meets a weak dealer card, never as an emotional flourish. Doubling a 12 or 13 is donating chips, so reserve it for strong spots like a two-card 11.
Chasing losses with stakes
Chips swing randomly, and losing three or four hands in a row is ordinary variance. Raising bets to win it back only accelerates the zero, so flat stakes plus the strategy chart gives the smoothest curve.