Basic strategy
The table below shows optimal strategy for typical casino rules (Vegas Strip) 4 to 8 decks, dealer stands on soft 17, player may double any 2 cards, double after split (DAS) allowed, and dealer checks for blackjack. If you are were to learn only one strategy by heart, this should be it.
| Your hand | Dealer’s face-up card | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A | |
| 5-8 | H | H | H | H | H | H | H | H | H | H |
| 9 | H | D | D | D | D | H | H | H | H | H |
| 10 | D | D | D | D | D | D | D | D | H | H |
| 11 | D | D | D | D | D | D | D | D | D | H |
| 12 | H | H | S | S | S | H | H | H | H | H |
| 13 | S | S | S | S | S | H | H | H | H | H |
| 14 | S | S | S | S | S | H | H | H | H | H |
| 15 | S | S | S | S | S | H | H | H | R | H |
| 16 | S | S | S | S | S | H | H | R | R | R |
| 17+ | S | S | S | S | S | S | S | S | S | S |
| A,2 | H | H | H | D | D | H | H | H | H | H |
| A,3 | H | H | H | D | D | H | H | H | H | H |
| A,4 | H | H | D | D | D | H | H | H | H | H |
| A,5 | H | H | D | D | D | H | H | H | H | H |
| A,6 | H | D | D | D | D | H | H | H | H | H |
| A,7 | S | D/S | D/S | D/S | D/S | S | S | H | H | H |
| A,8 | S | S | S | S | S | S | S | S | S | S |
| A,9 | S | S | S | S | S | S | S | S | S | S |
| 2,2 | P | P | P | P | P | P | H | H | H | H |
| 3,3 | P | P | P | P | P | P | H | H | H | H |
| 4,4 | H | H | H | P | P | H | H | H | H | H |
| 5,5 | D | D | D | D | D | D | D | D | H | H |
| 6,6 | P | P | P | P | P | H | H | H | H | H |
| 7,7 | P | P | P | P | P | P | H | H | H | H |
| 8,8 | P | P | P | P | P | P | P | P | P | P |
| 9,9 | P | P | P | P | P | S | P | P | S | S |
| 10,10 | S | S | S | S | S | S | S | S | S | S |
| A,A | P | P | P | P | P | P | P | P | P | P |
| H | Hit | |||||||||
| S | Stand | |||||||||
| D | Double if Possible, Otherwise Hit | |||||||||
| D/S | Double if Possible, Otherwise Stand | |||||||||
| P | Split (Pair) | |||||||||
| R | Surrender if Possible, Otherwise Hit | |||||||||

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