Blackjack table

Hard 20 is a near-lock winner against a dealer 5, so standing maximizes expected value. Doubling or splitting would only risk destroying a strong made hand.

Hard 18 against a dealer 10 is a standing hand; hitting risks busting and doubling is not favorable here.

Hard 18 against a dealer 10 is a standing hand; hitting or doubling risks busting or increasing loss frequency without enough gain.

Hard 19 vs dealer Q is a clear stand; hitting or doubling would only risk busting or weakening a made hand with no upside.

Soft 18 against a dealer 4 is a strong double spot: the dealer is likely to bust, and doubling maximizes value while I can still improve with one card.

Hard 19 against a dealer 9 is strong enough to stand; hitting risks busting and doubling is far too risky with a 9 showing.

Hard 15 against a dealer 5 is a standing hand per basic strategy; the dealer's high bust probability (4-6 upcards) makes hitting too risky and doubling inappropriate.

Hard 13 against an Ace is too weak to stand, and doubling would be reckless; hitting gives the best chance to improve without increasing the bet.

Hard 13 versus dealer upcard 2 is a standing hand in multi-deck basic strategy: the dealer's 2 is a bust-prone card and hitting 13 risks busting before the dealer must draw.

Standing on soft 20 is optimal; dealer cannot have blackjack after peeking, and hitting or doubling risks turning a likely winner into a loss.

Hard 17 against a dealer 5 is a standing hand; the dealer is likely to bust, and doubling a 17 would be a losing play.

Hard 12 against a dealer 10 is a losing stand, so I hit; doubling is not favorable for this total.

Hard 18 against a dealer 2 is a strong standing hand; hitting risks busting and doubling is not favorable with 18.

Hard 15 against a dealer 4 is a standing hand in basic strategy; the dealer is likely to bust, so hitting or doubling would only risk busting first.

Soft 13 against a dealer 3 is not a profitable double; basic strategy is to hit and try to improve while keeping the hand flexible.

Soft 17 against a dealer 3 is not strong enough to stand, and doubling is unavailable because the hand has three cards. Hitting gives a chance to improve while the ace still provides flexibility.

Hard 17 against a dealer 3 is a standing hand; hitting risks busting with little chance to improve safely.

Hard 12 against a dealer 10 is a losing stand, so I hit to try to reach 17–21. Doubling is not favorable with a weak 12.

Hard 8 against dealer 5 is a strong double-down spot, maximizing expected value with one card to improve.

Hard 15 against a dealer 7 is a losing stand, so I hit to try to reach 17-21; doubling is too risky since I'd be committing more chips on a weak total.