Blackjack table

With a hard 6 vs dealer's 5, doubling maximizes EV since the dealer is weak and I'm likely to improve to a strong total on one card.

Standing on 12 vs dealer 6 is risky because the dealer is likely to bust, but hitting has a reasonable chance of improving to 18-21 without much danger of busting. Doubling is not justified with only 12.

Standing on 16 vs dealer Ace is the least bad option; hitting risks busting and doubling is too risky with a weak hand.

With a hard 13 against the dealer's 8, standing is the mathematically correct basic strategy play to minimize the risk of busting. Doubling would be too risky with such a weak total.

Dealer shows a weak 6, and my soft 13 (A-2) has good potential to improve to a strong hand; doubling maximizes expected value on this favorable matchup.

Splitting 2s against a dealer 3 is a basic strategy play that maximizes long-term EV by giving two chances to improve weak hands.

Hard 6 is a terrible total; basic strategy says to hit against a dealer 3. Doubling would be reckless with such a weak hand.

My active hand totals 11, which is a strong drawing position; hitting gives a high chance to improve to 17-21 without much bust risk. The other hand is already complete at 12, so I focus on maximizing this hand's value.

Standing on 12 against a dealer 3 is the correct basic strategy play; hitting risks busting with a weak upcard, and doubling would be reckless with a marginal total.

Hard 12 vs dealer 9 is a losing total; hitting avoids standing on a weak hand, and doubling risks busting with only a 4/13 chance of improving to a safe total.

Standing on 15 against a 9 avoids busting and relies on the dealer likely busting with a stiff upcard.

Dealer shows a 5, which is weak, but my soft 16 is too vulnerable to bust if I double. Hitting keeps the hand alive and lets me improve to a stronger total without risking the full double bet.

Standing on 15 against a dealer 5 is the correct basic strategy play, as the dealer is likely to bust and hitting risks busting myself.

Hard 11 against dealer's 3 is a strong double-down spot; doubling maximizes expected value when the dealer is unlikely to have a blackjack and we have a high chance of drawing a 10-value card.

With a hard 12 against the dealer's King, standing loses to any dealer 7 or higher. Hitting is the mathematically correct play to improve the hand, as doubling would risk 20 chips on a weak total.

Soft 19 against an 8 is a strong hand; standing maximizes expected value and avoids unnecessary risk of busting or weakening the total.

Hard 9 vs dealer 8 is a textbook double in 6-deck S17 games; the dealer's 8 is weak and doubling maximizes expected value on a favorable starting total.

Standing on 14 against a dealer J is weak; hitting gives a chance to improve to 17+ without busting too often, and doubling is risky with a stiff 14.

Standing on 17 against a dealer 5 is the correct basic strategy play; hitting risks busting with little gain, and doubling is not recommended on a hard 17.

Hard 14 against dealer's 8 is a classic hit; standing risks losing to dealer 18+ while hitting has a better chance to improve without busting immediately.

With a hard 10 against a dealer 4, doubling is statistically sound, but I prefer to hit to keep the hand flexible and avoid committing the full double bet on a single card draw.

Standing on 19 is the correct basic strategy play regardless of the dealer's upcard. Hitting would risk busting with little chance of improving to a better hand.

Soft 19 against an Ace is a strong hand; standing avoids risking a bust and is the standard basic-strategy play.

Hard 11 against dealer's 7 is a strong double-down spot; I'll risk 10 more to maximize expected value on a likely strong hand.