The best Blackjack strategy for a single-deck game closely follows basic strategy but with some adjustments due to the reduced number of cards. You should generally hit or stand as you would in multi-deck games, though the probabilities are slightly different in single-deck games, so it's often better to stand on 12 against a dealer’s 4-6 and hit against other cards. Doubling down is more favorable because the chances of drawing high cards (like 10s or Aces) are higher, so it's ideal to double down on 11 against any dealer card and on 10 against a dealer’s 2-9. You should always split Aces and 8s, and also split 2s, 3s, and 6s when the dealer shows a weak card. Surrendering is an option in single-deck Blackjack, and it’s often wise to surrender 16 against a dealer’s 9, 10, or Ace. As with multi-deck games, avoid taking insurance, as it's typically a losing bet. Overall, the single-deck game allows for a bit more aggressive play, especially when it comes to doubling down and splitting, and makes card counting more effective due to the smaller deck size.