Blackjack Trainer: Practise Basic Strategy Hand by Hand

A blackjack trainer is a practice game that deals you hands and checks every decision against basic strategy, the mathematically best play for each hand and dealer upcard. The trainer below is free and uses no money. It follows the chart for a 6-deck game where the dealer stands on soft 17 and you can double after splitting. With perfect play at those rules, our 10-million-hand simulation measured a house edge of about 0.47%. The trainer's job is to get you playing at that level without thinking.

Try the blackjack trainer

Pick the move you'd make. The trainer tells you whether it matches basic strategy, then deals a new hand. Split is only available when you hold a pair.

Basic strategy trainer

Rules: 6 decks, dealer stands on soft 17, double after split allowed. Choose the move basic strategy recommends for this hand.

Your handA + 7Soft 18 (A,7)

Dealer upcard9

Score0 / 0

Hit Stand Double Split

Next hand

A "Double" answer means double if the table lets you; if it doesn't (for example, after you've already hit), the fallback is in the chart: some hands should hit instead, a few should stand. The trainer checks the first decision on a two-card hand, which is where doubling and splitting are possible.

How basic strategy practice works

Basic strategy is a lookup table. Every combination of your hand and the dealer's upcard has one best move, worked out by calculating the expected return of each option. The Wizard of Odds publishes charts for 4 to 8 decks, and our own simulated chart for these rules matches that structure.

The chart has three parts, and it pays to learn them in order:

1. Hard totals (no ace, or an ace that must count as 1). These come up most often, so they're the best place to start.
2. Soft totals (an ace counted as 11, like A,6 = soft 17). These are where most players go wrong, because a soft hand can't bust on one hit.
3. Pairs, where you also decide whether to split.

Practise one block at a time. When you can answer every hand in a block correctly at speed, add the next. Our printable blackjack strategy card shows the complete chart if you want to study it before drilling.

A practice routine that sticks

• Short, frequent sessions. A few minutes at a time keeps your attention on each decision instead of clicking on autopilot.
• Say the reason, not just the move. "Stand on 13 against a 6 because the dealer's likely to bust" sticks better than a bare answer.
• Track your misses. Write down every hand you get wrong. Your misses will usually cluster in a few spots, and those are the hands to drill.
• Drill the misses directly. Look up those hands on the card, then go back to the trainer and wait for them to come round.
• Add pressure last. Once accuracy is near-perfect, speed up. Real-money RNG games and live tables both run on a clock.

The hands players miss most

These are the decisions that feel wrong to beginners. The answers below are pulled straight from the chart the trainer uses (6 decks, S17, DAS):

A few patterns explain most of these:

• Stiff hands against a weak upcard. With 12 to 16 against a dealer 2 to 6, you often stand and let the dealer risk busting. Hard 12 is the exception against a 2 or 3.
• Stiff hands against a strong upcard. Against a 7 or higher, hard 16 is a hit. It feels risky, but standing is worse on average.
• Soft hands are for doubling. A,6 and A,7 are doubles against several small upcards. Against a 9, 10 or ace, soft 18 is a hit, not a stand.
• Pair rules aren't intuitive. Always split 8s and aces in this chart; never split 10s or 5s. A pair of 5s is just a hard 10.

How the rules change the answers

The trainer uses one rule set. If your table differs, some answers change. Two examples from our charts:

For other rule sets, use the blackjack calculator: enter your hand, the upcard and the table rules, and it returns the right move. It's the quickest way to settle a hand you're unsure about while practising.

The Wizard of Odds two-deck strategy page also gives one rule worth memorising for every game: never take insurance or even money. Our trainer doesn't offer insurance, so remember it separately.

What perfect practice is worth

Basic strategy can't remove the house edge, but it gets you to the lowest edge the rules allow. We simulated 10 million hands per rule set with a player who never makes a mistake:

Each figure is a Monte Carlo estimate with a standard error of about 0.036 percentage points. Mistakes push your real edge above these numbers. We haven't measured the cost of individual mistakes, so we don't quote figures for them; the point of the trainer is to get you as close to the table as possible.

Blackjack trainer vs card counting trainer

People searching for a "blackjack counting cards game" or "card counting trainer" usually want something different: a tool that flashes cards and checks a running count. That's a separate skill, and it's useless without perfect basic strategy underneath it. Get your trainer accuracy to 100% first, then move on to our card counting practice drills. Bear in mind that counting does nothing in online games that reshuffle every hand.

From practice to real tables, with USDT

When you're ready for a real-money table, our guide to online blackjack for real money explains how to check a table's rules and size a bankroll. A few habits carry straight over from the trainer:

• Keep the chart open. There's no prize for memory at an online table.
• Budget in stakes, not hope. A split followed by doubling both hands puts four stakes on one round, so a 5 USDT player should be able to cover 20 USDT on a single hand.
• Use a stablecoin. A USDT balance keeps your results about the cards, not the crypto price.

If you'd like to compare blackjack with a crypto-native game where every round is independent and verifiable, see our crash gambling guide.

Common mistakes when practising

• Drilling only the easy hard totals and never the soft hands or pairs.
• Practising one rule set and playing another without checking the changes.
• Guessing quickly instead of thinking through misses, which trains the wrong answer.
• Treating a perfect trainer score as a winning system. It lowers the edge; it doesn't flip it.
• Jumping to card counting before basic strategy is automatic.

More guides are on the blackjack hub.