Blackjack table

Hit hard 15 against the dealer's ace; without surrender, standing has a worse expectation.

Hard 16 against an ace should hit after the dealer peek has ruled out blackjack; standing loses too often to the dealer's likely made hand.

Hit hard 8 against the dealer's 10; standing is far too weak and doubling is not favored.

Hit hard 10 against a dealer 10; standing has very poor expected value.

Stand on hard 18 against a dealer 10; hitting has too much bust risk.

Stand on hard 13 against a dealer 2; the dealer's weak upcard makes standing preferable to taking bust risk.

Stand on hard 18 against a dealer 9; hitting has too high a bust risk and doubling is not favorable.

Hard 15 against a dealer 10 is a disadvantageous standing spot; with no surrender available, basic strategy calls for a hit.

Hard 17 should stand against a dealer 7 under standard blackjack basic strategy.

Hard 12 should hit against the dealer's 7, since standing is unlikely to win often enough.

Hard 12 stands against a dealer 3 under basic strategy, since the dealer has a relatively high bust chance.

Hard 16 versus a dealer 10 should hit when surrender is unavailable; standing loses too often against the dealer's strong upcard.

Stand on hard 17 against a dealer 4; drawing is more likely to bust than improve.

Hard 14 should stand against a dealer 5, which is a weak upcard likely to force dealer busts.

Hard 11 against a dealer 10 is a standard double: a single additional card has strong expected value despite the dealer's upcard.

Stand on hard 20 against a dealer 10; drawing risks busting and splitting tens reduces expected value.

Hard 12 versus a dealer 3 is a hit under basic strategy, as standing leaves too much dealer improvement equity.

Stand on hard 16 against dealer 3; the dealer's weak upcard makes standing preferable to risking a bust.