Blackjack table

Hard 11 against a dealer 4 is a strong doubling spot; one card maximizes expected value with a high chance of making 17-21 while the dealer's 4 is a bust-prone upcard.

Soft 14 against a dealer 3 is a hitting hand in basic strategy; doubling is not warranted here because the hand is too weak to commit an extra bet before improving.

Hard 14 against dealer upcard 3 is a standing hand under basic strategy; hitting risks busting when the dealer is likely to break.

Hard 16 against a dealer 5 is a standing hand in multi-deck basic strategy; the dealer is likely to bust, and doubling would be too risky.

Hard 9 against dealer 8 is not a profitable double; basic strategy is to hit and try to improve the total.

Hard 13 against a dealer 8 is a losing standing hand, so I hit to try to reach 17–21.

With a hard 13 against the dealer's 4, basic strategy is to stand and let the dealer risk busting.

Hard 13 against dealer 5 is a standing hand in basic strategy; the dealer is in bust range, so I avoid risking a hit.

Hard 10 against an Ace is a hitting hand; doubling would force me to stand on 12–16 too often, and standing on 10 has very low equity against the dealer's Ace.

I have a hard 19, which is a strong total against an Ace. Hitting would risk busting, so standing is clearly best.

Hard 20 against dealer 6 is a strong standing hand; hitting or doubling risks busting, and splitting is nonsensical with two ten-value cards.

With a hard 15 against the dealer's 5, standing is the correct basic-strategy play because the dealer is likely to bust and hitting risks busting first.

Hard 19 against a dealer Ace is a strong standing total; hitting or doubling risks busting a near-made hand, and the dealer peeks for blackjack anyway.

Hard 8 against dealer 2 is a basic-strategy hit; splitting 4s or doubling would add risk with weak starting hands.

Hard 17 against a dealer 2 is a standing hand; hitting risks busting with no need to improve, since the dealer must draw to 17 and stands on soft 17.

Soft 17 against a dealer 4 is a strong double spot under these rules; doubling maximizes expected value by getting extra money in while the dealer is likely to bust.

Pair of 7s against a dealer 7 is a standard split: it improves the chance to turn each 7 into a stronger hand against a likely made dealer total.

Hard 9 against dealer 7 is a hit in basic strategy; doubling would add risk without favorable expected value.

Hard 19 against a dealer 7 is a strong standing hand; hitting would risk busting with little chance to improve.

Soft 18 against a dealer 7 is a standing hand under basic strategy; the dealer is likely to make 17 and hitting risks busting or weakening a made total.

In 6-deck S17 blackjack, hard 9 versus dealer 2 is a basic-strategy double when permitted, maximizing expected value.

Hard 10 versus a weak dealer 2 is a standard double spot; doubling maximizes expected value against the dealer's likely bust-heavy upcard.

Hard 18 against dealer's 5 is a strong standing hand; hitting risks busting, and doubling is not favorable for a made 18.

Hard 16 against a dealer 6 is a standing hand; the dealer is likely to bust, and doubling would risk extra chips on a weak total.

Hard 17 against a dealer 10 is a standing hand; hitting risks busting and doubling is not favorable with 17.