Blackjack table

Hard 18 is a strong hand against a dealer 5 upcard, and the dealer is likely to bust or make less than 18. Doubling would risk too much for marginal gain, so standing is the correct play.

With a hard 12 against a dealer 10, hitting gives the best chance to improve before the dealer's strong upcard. Standing on 12 is too risky here.

Soft 18 is weak against a dealer 10 upcard, so hitting gives the best chance to improve while standing risks losing to a likely dealer total of 20.

Hard 17 is a made hand and basic strategy says to stand against a dealer 8, as hitting risks busting too often.

Hard 20 is a very strong hand against a dealer upcard of K, so hitting or doubling risks a made hand. Standing maximizes expected value.

Hard 13 against a dealer 5 is a stand in basic strategy because the dealer is likely to bust or make a weak hand.

Basic strategy says to stand on hard 15 against a dealer 2, as the dealer is likely to bust or make a lower total.

Total 20 is a very strong hand against a dealer 3 upcard; hitting, doubling, or splitting would only risk a strong made hand. Standing maximizes expected value.

With a hard 11 against a dealer 10, doubling has positive expectation in this six-deck game, so I maximize the bet while taking one card.

Hard 18 against dealer 4 is a strong hand; standing avoids busting and maximizes expected value.

Dealer shows a 6 and must stand on soft 17, so standing with 17 is the correct basic strategy play.

Splitting 3s against a dealer 3 is the basic strategy play, as it gives two chances to draw to a strong total against a weak upcard.

Hard 10 is strong against dealer 3, and doubling maximizes expected value in this spot. Doubling after split is allowed, so I take the extra chips.

Hard 11 is a strong doubling hand against a dealer 3, and doubling is allowed after split. This maximizes expected value on this hand.

Dealer shows a 6, a likely bust card, so standing on 12 avoids the risk of drawing and busting while giving the dealer a chance to exceed 21.

Hard 12 against a dealer 10 is a losing hand, so hitting gives the best chance to improve while standing is too weak against a likely dealer total of 20.

Hard 13 against a dealer king is a losing hand, so hitting gives the best chance to improve without the risk of doubling into a strong dealer upcard.

Soft 16 is a drawing hand against a dealer 8; doubling is not profitable here, so I take a hit to improve the hand.

Hard 16 against a dealer 8 is a losing hand if I stand, so hitting gives the best chance to improve before the dealer acts.

Hard 17 is a made hand and hitting risks busting against a dealer 8, so standing is the correct basic strategy play.

Dealer upcard 6 is a bust card, and standing on 15 avoids the risk of busting while the dealer is likely to bust.

Dealer shows a 4, a bust card, so standing on 14 is the basic strategy play to let the dealer draw and likely bust.

With 14 against a dealer 10, hitting is the standard play to try to improve without risking an extra bet on a double.