Blackjack Strategy Trainer

Play real hands against the basic-strategy chart for your table rules. Every mistake is priced in the maths, and missed hands come back.

Dealer

Your hand

Your session

Accuracy: –
Hands: 0
Streak: 0
Best streak: 0
Avg. cost per 100 units: 0.0
Weak spots: 0

Deal

Table rules 6D · S17 · DAS · D any · LS · peek · 3:2

See the full chart for these rules

Last hands

Hands you play are listed here.

Progress stays in this browser only. No account, no real money.

How it works

Choose your table rules (they are shared with the strategy chart).
Each hand deals two cards to you and one up to the dealer. Pick a play with the buttons or the keys H, S, D, P, R.
You get the chart play straight away, the reason for it, and what your choice costs per 100 units bet.
Missed hands go into Drill weak spots and come back until you get them right twice in a row.

What the maths says

Each hand is graded against the basic-strategy chart for your rules, computed by the same engine as the strategy chart. The cost of a mistake is the difference in expected value between your play and the best one, per 100 units bet.

Mistakes are not equal. With standard rules, standing on 16 against a 10 instead of surrendering costs 4.0 units per 100; hitting 11 against a 6 instead of doubling costs 33.7; standing on a pair of 8s against a 10 instead of splitting costs 6.1. Hitting 12 against a 4 costs just 0.4. The trainer shows you which ones are expensive so you can fix those first.

Perfect basic strategy still leaves the house its edge. The trainer teaches you to stop paying extra on top of it.

Read the guide

Blackjack House Edge 2026: Where It Actually Comes FromThe blackjack house edge comes from one rule: you act first. See how each table rule moves it, what insurance and mistakes cost, and what it means in money.
Blackjack Odds: Dealer Busts, Blackjacks and Losing StreaksThe dealer busts 28.19% of hands, you get a blackjack once in 21 and lose 49% of rounds. Exact blackjack odds by upcard, plus how long losing streaks last.
Hardest Blackjack Hands: 12 Plays Ranked by What They CostThe hardest blackjack hands are the ones where instinct loses money. Twelve common mistakes ranked by cost per 100 hands, from insurance to splitting tens.
Are Blackjack Strategy Cards Allowed in Casinos? 2026 GuideStrategy cards are tolerated at most live blackjack tables, with limits on pace and some tournaments. Learn the rules, the etiquette and how to use one.