Blackjack Basic Strategy

Basic strategy is the optimal play for a blackjack player oblivious to what cards have been exposed since the last shuffle. The complete set of optimal player decisions on the first hand after a shuffle in a single-box game is known as alson considered basic strategy. The basic strategy table below applies to the following ruleset:

• 4 to 8 decks
• Dealer stands on soft 17
• Double on any 2 cards
• Double after split allowed
• Only original bets lost on dealer Blackjack
• Late surrender

Most Las Vegas Strip casinos hit on soft 17. This rule change requires a slightly modified basic strategy table: double on 11 verses a dealer's upcard being an ace, double on A/7 verses a dealer 2, and double on A/8 versus a 6. Most casinos outside of Las Vegas still stand on soft 17.

Source: Wikipedia