Blackjack table

Hard 11 against a dealer 4 is a strong double per basic strategy; expected value beats hitting.

Soft 14 (A-3) against dealer 3: basic strategy says hit (soft 13-18 hit vs 3 in S17 rules), doubling soft 14 vs 3 is not recommended.

Hard 14 (A+3+10) against a dealer 3 falls in the stand range; hitting risks busting with little gain since the dealer must hit to 17 on a weak upcard.

Hard 16 against a dealer 5 is a basic-strategy stand: the dealer's bust probability is high with a 5 upcard, and hitting risks busting. Doubling is not warranted with a stiff total.

Hard 9 vs dealer 8 is a hit per basic strategy; doubling is only correct against dealer 3-6, and standing leaves the hand too weak against an 8.

Hard 13 vs dealer 8 is a basic-strategy hit; standing loses more often than drawing since the dealer likely makes 18.

Hard 15 vs dealer 8 is a basic-strategy hit; standing loses against the dealer's likely 18+ and only ~22% bust risk makes drawing correct.

Hard 13 against a dealer 4 is a standing hand in basic strategy; the dealer's high bust probability makes hitting or doubling -EV.

Basic strategy: hard 13 against a dealer 5 stands—dealer bust probability is high with small upcards, and hitting risks breaking.

Hard 10 vs dealer Ace (peek confirms no blackjack) is a clear hit per basic strategy; doubling is only correct against 2-9.

Hard 19 is a strong standing hand; only dealer blackjack (already peeked) or rare draws beat it, and hitting risks busting for negligible gain.

Hard 20 is a near-made hand; standing against a dealer 6 maximizes expected value since the dealer has high bust potential and no draw can improve 20.

Hard 15 against a dealer 5 is a basic-strategy stand; the dealer's bust risk is high and hitting risks breaking the hand.

Hard 19 is a strong standing hand; the dealer peeked under the Ace and no blackjack was declared, so standing maximizes expected value versus hitting or doubling.

Pair of 4s vs dealer 2 with double-after-split allowed: splitting is the basic-strategy play and slightly better EV than hitting hard 8.

Hard 13 against a dealer 2 is a basic-strategy stand; the dealer's weak upcard gives high bust probability and hitting risks breaking.

Hard 14 against a dealer 2 is a basic-strategy stand: the dealer's weak upcard busts often enough that hitting risks busting my 14 for little gain. Doubling is not justified at 14.

Hard 14 against a dealer 6 is a standard stand per basic strategy; the dealer's high bust probability makes hitting unnecessary, and doubling a hard 14 is too risky.

Basic strategy: split 7,7 against a dealer 7, since 14 is a poor standing total and 7 is a strong starting card, especially with double-after-split allowed.

Hard 9 against a dealer 7 is a basic-strategy hit; doubling is only correct against dealer 3-6, so I take one card and reassess.

Hard 19 is a strong made hand; standing against a dealer 7 maximizes expected value since hitting risks busting for negligible gain.

Soft 18 vs dealer 7 is a basic-strategy stand: dealer likely holds 17 or busts, and hitting risks turning a probable winner into a stiff hand. Doubling soft 18 vs 7 is -EV.

Hard 9 vs dealer 2 is a hit per basic strategy; doubling is only profitable against dealer 3-6, so I take one card and reassess.

Hard 19 is a very strong hand; standing is clearly optimal against a dealer 2 regardless of composition.

Two-card 10 against a dealer 2 is a standard double in 6-deck S17 basic strategy, maximizing expected value with a strong drawing hand.

Hard 18 against a dealer 5 is a strong standing hand; doubling risks turning a likely winner into a bust, and hitting can only hurt. Stand.

Hard 16 against a dealer 6 is a standard stand: the dealer's bust rate is high from a 6, and hitting 16 risks busting first. Doubling a 16 is not profitable.

Hard 17 against a dealer 10 is a standard stand; hitting risks busting with most of the deck while standing already beats the dealer's likely stiffs and lets them bust.