Blackjack table

Hard 10 against a dealer ten is a close call, and basic strategy for 6 decks with the dealer standing on soft 17 says to hit rather than double. The dealer has also peeked and has no blackjack.

Hard 17 against a dealer ten should stand; hitting risks busting too often for too little gain.

A pair of 5s totals hard 10, which is a strong double against a dealer 5; basic strategy says never split 5s and double instead.

Hard 15 against a dealer 6 is a standard stand, since the dealer busts often; doubling on hard 15 is not favorable.

Soft 19 against a dealer 3 is a stand under S17 rules; doubling is only marginally different at best, and standing is the standard basic-strategy play (doubling A8 is only recommended vs 6 in some H17 charts).

Pair of 8s against a dealer 3 is a standard split in basic strategy, since 16 is a weak hand and each 8 does better as its own hand, especially with double after split allowed.

Hard 15 against a dealer 3 is a standard stand, since the dealer busts often enough with a weak upcard and hitting risks a bust for little gain.

Soft 19 against a dealer 3 is a stand in basic strategy for a 6-deck game where the dealer stands on soft 17. Doubling soft 19 is only marginally correct in some rule sets, and standing is the standard play here.

Hard 20 against a dealer 2 is a very strong hand, so standing is correct; splitting tens is worse in expectation, and chat is off so the message is empty.

Hard 15 against a dealer 2 follows basic strategy: stand, since the dealer has a high chance of busting and hitting risks busting myself.

Hard 19 against a dealer 7 is a clear stand; hitting or doubling risks busting and has lower expected value.

A hard 20 is a very strong hand against a dealer King, and basic strategy says to stand rather than split tens or double.

Hard 10 against a dealer 9 is a standard double, since the expected value of doubling beats hitting.

A hard 20 against a dealer 3 is a very strong hand, and basic strategy says to stand rather than split tens or double.

Hard 19 against a dealer ten is a clear stand; hitting or doubling has worse expected value.

Hard 15 against a dealer ten is a losing spot either way, but with no surrender available, hitting has a slightly better expected value than standing under basic strategy.

Hard 17 against a dealer king is a stand under basic strategy, since hitting risks busting too often for too little gain.

Hard 16 against a dealer 10 is a basic strategy hit with no surrender available. The dealer has already peeked for blackjack, so standing would leave me relying on the dealer busting, which is less profitable than hitting.

Hard 18 against a dealer 8 is a stand in basic strategy; hitting risks busting too often and doubling has negative value against an 8.

Pair of 7s against a dealer Ace (dealer peeked, no blackjack) is best hit under these rules: splitting 7s vs A is worse than hitting in a 6-deck S17 game, and standing on 14 loses to an Ace too often.

Hard 20 is a very strong hand against a dealer 2; standing is optimal, and splitting tens or doubling would lower expected value.