Blackjack table

Hard 17 against a dealer ten-value upcard is a stand in basic strategy; hitting risks busting too often and doubling is clearly worse.

Pair of 4s versus a dealer 7 is best played as a hard 8 and hit. Splitting 4s is only marginal, and doubling an 8 against a 7 is not favorable, so hitting is the standard play.

Hard 14 against a dealer 7 is a hit under basic strategy. The dealer stands on all 17s and the dealer's likely total is 17, so standing on 14 loses more often than hitting.

Hard 9 against a dealer 9 is a marginal double in 6-deck basic strategy (double 3-6 only in some charts, but with double-after-split and stands on soft 17, hard 9 vs 9 is generally a hit). Hit is the standard play here, but doubling is legal and slightly riskier; I choose double for the extra expected value from a strong total draw.

Hard 15 against a dealer 5 is a stand by basic strategy, since the dealer busts often with a weak upcard. Doubling on 15 is not favorable.

Hard 12 against a dealer 4 is a basic strategy stand, since the dealer busts often with a 4 upcard and hitting risks busting the hand.

Hard 7 against a dealer ten is a clear hit under basic strategy. Doubling is unfavorable here, and standing on 7 is too weak.

A hard 9 against a dealer Queen is far too weak to stand on, and doubling is not legal with three cards, so hitting is the best play.

Hard 18 against a dealer ten is a stand in basic strategy; hitting risks busting for little gain, so standing has the better expected value.

Hard 6 against a dealer 6 is a hit by basic strategy, since doubling is only correct with totals of 9 to 11. Chat is off, so the table message is empty.

Hard 14 against a dealer 6 is a standard stand, since the dealer busts often and hitting risks busting first.

Hard 11 against a dealer 2 is a standard double, since the chance of landing a strong total is high and the dealer is weak.

Hard 13 against a dealer 10-value upcard is a losing spot either way, but basic strategy says hit because the dealer makes a pair-of-tens-strength hand often and standing on 13 does worse.

Hard 16 against a dealer ten is a losing spot either way, but hitting loses less often than standing. Basic strategy says hit.

Soft 14 against a dealer ten is best played by hitting, since standing on 14 loses too often and doubling is not favorable against a ten. Hitting cannot bust the hand and gives a chance to improve.

Soft 18 against a dealer 10 is a hit in basic strategy: standing on 18 loses to a dealer 19 or 20 more often than the soft hand's chance to improve costs, and hitting cannot bust.

Basic strategy for 3,3 against a dealer 5 is to split, especially with double after split allowed, since the dealer is in a weak bust-prone position.

Hard 5 against a dealer 5 is too low to double; basic strategy says hit, since doubling only starts at 9 or higher.

A hard 8 against a dealer 5 is too weak to stand on, and doubling is not allowed here. Hitting is the correct basic-strategy play.

Basic strategy says a hard 13 stands against a dealer 5, since the dealer busts often with a weak upcard and hitting risks busting first.

Hard 8 against a dealer 5 is normally a hit under basic strategy, since doubling is only marginally better with 8 in a multi-deck game. Hitting is the standard, safe play here.

Soft 19 against a dealer 5 is a stand; hitting would risk a worse hand for little gain, and doubling is not legal here.

Hard 12 against a dealer 9 is a basic strategy hit, since standing on 12 loses more often against a strong upcard and doubling is not correct here.

Hard 18 against a dealer 2 is a standard stand; hitting risks busting and doubling has negative expected value.

Hard 16 against a dealer ten is a weak spot, and with no surrender available basic strategy says hit. The dealer peeked for blackjack, so a ten upcard means the dealer does not have it, but standing on 16 still loses more often than hitting.

A hard 20 is a very strong hand against a dealer ten, and hitting would almost certainly hurt it, so standing is the clear choice.

Hard 17 against a dealer King: basic strategy says stand, since hitting risks busting with most cards and doubling is clearly worse.

Hard 9 against a dealer 9 is a marginal double under basic strategy in a multi-deck game, and doubling is allowed on any first two cards, so doubling has the highest expected value.

Soft 18 against a dealer ten is a hit in basic strategy, since standing on 18 loses more often than hitting a hand that cannot bust on one card. Doubling is not favorable against a ten.

Hard 12 (7+A+4, ace counted as 1) against a dealer Queen: basic strategy says hit, since standing on 12 versus a 10 loses more often than hitting does.

Hard 10 against a dealer ten is a hit in basic strategy for 6 decks, since doubling is only marginally profitable against a 10 and the dealer peeked, so no blackjack risk remains. Both hit and double are close, but hit is the standard play here.

Hard 20 against a dealer Queen is a very strong hand, so standing is clearly correct. Hitting would almost certainly bust or worsen the total.

Hard 20 against a dealer 8 is a strong made hand, so standing is best. Splitting tens is worse in expectation, and chat is off so the table message is empty.