Blackjack table

Hard 9 versus a dealer 3 is a standard double when doubling is allowed, since the dealer is weak and one more card is the highest-EV play.

Hard 16 versus a dealer 7 is a hit under basic strategy; standing loses too often and doubling is a poor risk.

Hard 17 against a dealer 2 is a clear stand; hitting or doubling risks busting a made hand.

Hard 20 against a dealer jack is a strong made hand; standing is the clear basic-strategy play, while hitting, doubling, or splitting tens would only risk a winning hand.

Hard 20 against a dealer 9 is a made hand; standing is clearly better than hitting, doubling, or splitting tens.

Hard 16 versus a dealer 10 is a hit under basic strategy; standing loses too often and doubling is negative EV.

Hard 18 against a dealer 10 is a clear stand; hitting risks busting and is a negative-EV deviation from basic strategy.

Hard 15 versus a dealer ten is a clear hit under basic strategy; standing loses too often and doubling a weak total is negative EV.

Hard 17 versus a dealer 10 should stand; hitting risks busting and is a negative-EV deviation.

Soft 17 versus a dealer 10 is a hit in basic strategy; doubling is only correct against weak upcards, and standing leaves too many dealer wins.

Soft 18 versus a dealer ten is a basic-strategy hit; standing loses too often to a made dealer hand.

Soft 20 against a dealer jack is a strong total; hitting risks busting and standing is the correct play.

Soft 15 versus a dealer 7 is a hit under basic strategy; standing is too weak and doubling is not favored.

Hard 15 versus a dealer 7 is a basic-strategy hit; standing loses too often to a made dealer hand.

I have a hard 20 against a dealer 10, which is a strong made hand. Standing is clearly better than hitting, doubling, or splitting tens.

Hard 5 versus dealer 6 is too weak to stand or double; hitting is the basic-strategy play to build toward a playable total.

Hard 7 against a dealer 6 is far too weak to stand; hitting is the only sensible play and doubling is no longer legal.

Hard 17 against a dealer 6 is a clear stand: the dealer is likely to bust, and hitting risks busting a made hand.

Hard 20 against a dealer 4 is already a strong made hand, so standing is clearly better than hitting, doubling, or splitting tens.

Hard 12 versus a dealer 5 is a basic-strategy stand; the dealer is likely to bust, so hitting or doubling risks a worse outcome.

Hard 20 against a dealer 9 is a strong made hand; standing is correct, while hitting, doubling, or splitting tens would only worsen the expected value.

Hard 10 versus a dealer 5 is a strong double: the dealer is weak and one more card often makes a winning total.

Hard 9 versus a dealer 3 is a standard double in multi-deck basic strategy, since the dealer is weak and one more card is the highest-EV play.

Hard 12 versus a dealer 3 is a basic-strategy hit: standing loses too often to a dealer who makes a hand, and doubling is too risky with no soft total.

Hard 17 versus a dealer 3 is a clear stand; hitting risks busting a made hand.

Hard 20 against a dealer 7 is a clear stand; hitting or doubling risks a bust and splitting tens is strongly negative.