Blackjack Basic Strategy Trainer
NewLook up the mathematically optimal blackjack action (hit, stand, double, or split) for any hard total, soft total, or pair against any dealer upcard.
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basic strategy recommended action
Frequently Asked Questions
What is "basic strategy"?
Basic strategy is the mathematically derived optimal play for every possible player-hand-vs-dealer-upcard combination in blackjack, computed from the game's odds assuming no card counting — following it consistently minimizes the house edge to roughly 0.5% in most standard rule sets, far lower than intuition-based play.
Why does a soft total get treated differently?
A "soft" total includes an Ace counted as 11 (for example, Ace+7 = "soft 18"), which means you can't bust by hitting once since the Ace can drop to count as 1 if needed — this extra safety margin makes hitting or doubling correct in situations where the same hard total would call for standing.
Why does the strategy depend so heavily on the dealer's upcard?
A dealer showing a weak upcard (4, 5, or 6) is statistically more likely to bust when forced to hit to reach 17, so basic strategy favors standing on marginal totals against those cards to let the dealer bust — while a strong dealer upcard (9, 10, Ace) favors hitting more aggressively since you can't rely on a dealer bust.
Does this account for card counting or deck penetration?
No — this shows flat basic strategy assuming a fresh, well-shuffled shoe with no information advantage. Card counting adjusts some of these decisions ("deviations") based on the ratio of high to low cards remaining, which is a more advanced technique beyond the scope of this reference chart.