Blackjack table

Hard 13 is a standing hand against a dealer 3 under basic strategy, since the dealer is less likely to bust and hitting risks busting more often.

Soft 13 vs dealer 4 is a hit per basic strategy; doubling is not optimal because the dealer upcard is not weak enough.

Dealer shows a 4, a weak upcard, so standing on hard 13 avoids unnecessary risk and lets the dealer likely bust or make a worse hand.

Hard 10 against a dealer 10 is too weak to double, since a dealer 10 is strong and hitting gives the best chance to improve without risking extra chips.

Hard 13 against a dealer 10 is a losing hand; hitting gives the best chance to improve to 17 or better before the dealer's strong upcard is resolved.

With a hard 10 against a dealer 10, doubling is not favorable; hitting gives the best chance to improve while preserving the option to draw again if needed.

With a hard 12 against a dealer queen, hitting is the correct basic strategy play to improve the hand.

Hard 17 vs dealer 10 is a stand per basic strategy; hitting risks busting with high probability.

Dealer upcard is 5, a weak card, so standing on 12 is the optimal basic strategy play to avoid busting while letting the dealer draw.

Hard 13 is too weak against a dealer 10 upcard, so hitting gives the best chance to improve while the dealer is likely to make a strong hand.

Hard 16 against a dealer 10 is a losing hand, but standing wins too rarely; hitting gives a chance to improve and the dealer is likely to make 17 or better.

12 vs dealer 9 is a stiff hand; hitting gives the best chance to improve without busting too often, while doubling is too risky with a weak total.

Hard 14 against a dealer 9 is a losing hand; hitting gives a better chance to improve to 17 or better than standing.

Hard 13 against a dealer 8 is a losing hand; hitting gives the best chance to improve to 17 or better, while standing leaves too much risk.

Total 20 is a very strong hand, and hitting risks busting against a dealer 8, so standing maximizes expected value.

Hard 12 vs dealer 3 is a hit per basic strategy; dealer's upcard is weak but our hand needs improvement, and doubling is too risky with a high bust chance.

Dealer shows a 4, which is a bust card, and standing on 15 avoids the high risk of busting while the dealer is likely to bust or make a lower total.

With a hard 13 against a dealer upcard of 2, standing is the basic strategy play since the dealer is likely to bust or make a low total. Hitting risks busting with little upside.

With a hard 17 against a dealer 10, standing is the optimal basic strategy play to avoid busting and to have a chance to push or win if dealer busts.

Hard 17 is a strong made hand against a dealer 8, and the risk of busting by hitting outweighs the chance of improving. Standing is the correct basic strategy play.

Dealer upcard 4 is a bust card, so standing on 14 is the basic strategy play to avoid risking a bust.

With 12 against a dealer 7, the dealer is likely to make a pat hand, so hitting gives the best chance to improve without excessive bust risk.

Hard 13 against a dealer 7 is a losing hand if I stand, so I hit to try to improve to at least 17.

Hard 15 is too weak against a dealer 10 upcard; standing wins too rarely, and doubling is unjustified. Hitting gives the best chance to improve to a making total.

Hard 17 is a made hand and the dealer shows a weak 2 upcard, so standing gives the best expected value.