Blackjack table

Hard 16 against a dealer 6 is a standard stand, since the dealer is most likely to bust. Doubling is not favorable on a hard 16.

Basic strategy says to split 7s against a dealer 2 when double after split is allowed. Splitting gives a better expected value than standing on 14.

Hard 17 against a dealer 2 is a standard stand; hitting risks busting with little gain and doubling has negative value.

Soft 18 against a dealer 2 is a stand under basic strategy when the dealer stands on soft 17. Doubling is only better against 3 through 6.

Hard 20 against a dealer 6 is a very strong hand, so standing is correct. Splitting tens is worse in expectation, even against a weak upcard.

Hard 20 is a very strong hand against a dealer 8; basic strategy says to stand rather than split tens or double.

Hard 13 against a dealer Ace (dealer has already peeked and has no blackjack) is weak, and standing loses more often than hitting. Basic strategy says hit, and doubling is not advisable on 13.

Hard 13 against a dealer King (who has already peeked and has no blackjack) is a losing stand, and doubling is worse than hitting. Basic strategy says hit.

Hard 12 against a dealer 3 is a hit in basic strategy for a 6-deck game where the dealer stands on soft 17. Standing only wins against 3 when the dealer busts, and hitting has the higher expected value.

Hard 20 is a very strong hand against a dealer 3, so standing is clearly correct and hitting would almost surely bust or throw away value.

Hard 20 against a dealer 6 is a very strong hand. Standing is the basic-strategy play, and splitting tens or doubling would lower expected value.

Hard 20 against a dealer 4 is a strong made hand; splitting tens is not worth it in basic strategy, so standing maximizes expected value.

Hard 15 against a dealer ten is a weak spot with no surrender available. Basic strategy says hit, since standing loses more often than hitting does in the long run.

Hard 15 against a dealer 2 is best played as a stand under basic strategy, since the dealer busts often with a weak upcard. Doubling on 15 is not favorable.

Hard 13 against a dealer 5 is a standard stand, since the dealer busts often with a weak upcard. Doubling on 13 is not correct basic strategy.

Hard 15 against a dealer Ace (who has already peeked and has no blackjack) is a weak hand, but hitting has a better expectation than standing, and doubling is clearly worse.

Hard 16 against a dealer Ace (no dealer blackjack after the peek) is a hit in basic strategy when surrender isn't available, since standing loses more often than hitting.

Hard 12 against a dealer 6 is a standard stand, since the dealer is most likely to bust and hitting risks busting with many ten-value cards.

Hard 6 against a dealer Ace is a weak hand, and doubling is not favorable here, so the standard basic-strategy play is to hit.

Hard 8 against a dealer Ace is far too weak to stand on, and doubling is not legal with three cards, so hitting is the best option.

Hard 18 against a dealer Ace that has already been checked for blackjack is a stand under basic strategy, since hitting risks busting or improving only to a marginal total.

Hard 12 against a dealer 6 is a basic strategy stand, since the dealer is most likely to bust and hitting risks busting first.