Blackjack table

Hard 18 against a dealer 10 is a stand per basic strategy; hitting risks busting a strong hand for marginal gain.

Hard 15 against a dealer 5 is a stand per basic strategy; the dealer's high bust probability makes hitting unnecessary risk.

Hard 7 against a dealer 9 is far below the standing range; basic strategy says hit to build toward 17+, and doubling is too risky with such a weak total.

Hard 12 against a dealer 9 is a clear hit; standing loses against the strong upcard, and only a 10 busts the draw.

I have a hard 19 against a dealer 9; standing is clearly optimal since hitting risks busting a near-winning hand.

Hard 12 against a dealer 2 is a marginal hand; basic strategy says hit because standing loses more often than hitting against a weak-but-not-busting upcard.

With 15 against a dealer 6, basic strategy favors standing: the dealer's bust probability is high, and hitting risks busting a likely winning hand.

Hard 15 against a dealer 6 is a stand per basic strategy; the dealer's high bust risk makes hitting unnecessary and doubling too risky.

Soft 17 against a dealer 9 is a clear hit per basic strategy; standing loses to 19 often, and doubling is too risky against a strong upcard.

Hard 12 against a dealer 7 is a basic-strategy hit: the dealer is likely to make 17+, so standing on 12 loses too often, while only a 10 busts me.

Hard 19 is a very strong hand; standing wins against a dealer 7 the vast majority of the time, while hitting risks busting for negligible gain.

Hard 14 against a dealer 10 is a clear basic-strategy hit; standing loses to any dealer 17+ while drawing can improve to 17-21.

Hard 18 against a dealer King is a standing hand per basic strategy; hitting risks busting a strong total with little gain.

Hard 18 vs dealer ace: standing loses ~46% of the time, but hitting 18 is far worse since only 2-3 improve the hand. Basic strategy says stand.

Hard 10 against a dealer 3 is a strong doubling situation per basic strategy; the dealer is likely to bust and I have good odds of drawing a 10-value card.

With 20 against a dealer Ace and peek rules confirming no dealer blackjack, standing is clearly optimal; splitting or doubling would only risk a near-certain winner.

Hard 14 against a dealer 3 is a basic-strategy hit; standing only wins if the dealer busts, and a 3-upcard busts less often than 4-6.

Hard 19 is a strong made hand; standing is clearly optimal against a dealer 3.

Hard 17 against a dealer 8 is a standard stand; hitting risks busting with no meaningful gain.

Hard 14 against an Ace is a clear basic-strategy hit; standing only wins if the dealer busts, which is unlikely from an Ace. Since the dealer peeks and no blackjack was announced, hitting to improve is correct.

Basic strategy for a pair of 9s is to stand against a dealer 10-value upcard; splitting into a likely strong dealer hand is worse than holding 18.

Basic strategy calls for hitting hard 13 against a dealer 10 upcard; standing only wins on a dealer bust (~21%), and doubling isn't available on three-card totals.

Hard 17 against a dealer 10 is a standing hand under basic strategy; hitting risks busting (~69%) with little gain since the dealer's 10-up is not strong enough to justify it.

Hard 8 against a dealer King is a clear basic-strategy hit; standing on 8 has almost no chance to win, and doubling is far too weak here.

Soft 19 vs dealer 10: standing is near-optimal; hitting only helps against 20/21 but risks worse, and standard play stands.

Hard 20 is a near-made hand; standing wins the vast majority against a dealer 4, while doubling or splitting tens would destroy a dominant position.