Blackjack table

Hard 5 against a dealer 7 is a clear hit under basic strategy; doubling is wrong with such a low total and standing is far worse.

Soft 16 against a dealer 7 is a basic-strategy hit; standing on 16 vs 7 is far worse and the soft ace means no bust risk on this card.

Soft 18 versus dealer 7: basic strategy says stand, since the dealer's likely 17 loses to 18 and hitting risks weakening the hand.

Hard 10 versus a dealer Ace: basic strategy (6 decks, S17, dealer peeks) says hit rather than double, since the Ace upcard is too strong to justify doubling.

Hard 7 vs dealer 6: basic strategy says hit; doubling 7 is not profitable and standing on 7 is far worse.

Hard 11 with three cards cannot bust on a hit and double is not allowed, so hitting is clearly correct against a dealer 6.

Hard 11 versus dealer 8 is a basic strategy double in a 6-deck S17 game; doubling maximizes expected value here.

Hard 16 vs dealer 9 with no surrender: basic strategy says hit, since standing loses far more often against a strong upcard.

Hard 19 against a dealer 4 is a clear stand under basic strategy; hitting or doubling would risk busting a strong hand.

Hard 15 against a dealer 7 is a basic strategy hit; standing loses more often since the dealer makes a hand frequently with a 7 up, and surrender isn't available.

Hard 12 against a dealer 10 is a hit per basic strategy; standing or doubling would be worse in expectation.

Hard 15 against a dealer 10 with no surrender available: basic strategy says hit, since standing loses more often than hitting.

Hard 19 against a dealer 7 is a clear stand by basic strategy; hitting or doubling would risk busting a strong hand.

Hard 12 versus a dealer 2 is a basic-strategy hit; the dealer busts too rarely with a 2 to justify standing.

Hard 20 against a dealer 7 is a strong standing hand; basic strategy never splits tens or hits/doubles here.

Hard 20 versus dealer 10 is a clear stand under basic strategy; splitting tens or hitting would sacrifice a strong favorite position.

Hard 16 versus a dealer 10 with no surrender available: basic strategy says hit, since standing loses more often than hitting in the long run.

Hard 11 against a dealer 4 is a standard double down in basic strategy; the dealer busts often and we have a strong chance to draw a 10-value card.

Basic strategy: hard 10 vs dealer 10 is a hit, not a double, since the dealer's strong upcard makes doubling unprofitable.

Hard 20 against a dealer ten; standing is clearly correct since any hit almost certainly busts.

Hard 17 versus a dealer 8 is a stand by basic strategy; hitting busts far too often and doubling is worse.

Basic strategy with double after split allowed: split 4s against dealer 5 or 6.

With double after split allowed, basic strategy says split 4s against a dealer 5 or 6, since the dealer is weak and each resulting hand has good doubling potential.

Hard 7 against a dealer 5 is a hit per basic strategy; doubling is not favorable with a total this low.

Hard 17 against a dealer 5 is a clear stand per basic strategy; the dealer is likely to bust and hitting 17 risks busting.

Hard 12 versus a dealer 5 is a basic strategy stand; the dealer busts often enough that hitting a 12 loses more value than it gains.

Hard 9 against a dealer 5 is a standard double per basic strategy, and double after split is allowed.