The Basic Strategy for a particular set of rules was developed by intensive computer simulation which performed a complete combinatorial analysis. The computer "played" tens of thousands of hands for each BlackJack situation possible and statistically decided as to which play decision favored the player. The following three charts are the results of this analysis.
Legend: H = Hit S = Stand D = Double P = Split
Las Vegas Single Deck Basic Strategy Table
| Dealers Up Card | ||||||||||
| Your Hand |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
A |
| 8 |
H |
H |
H |
D |
D |
H |
H |
H |
H |
H |
| 9 |
D |
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 |
D |
| 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 |
H |
H |
| 16 |
S |
S |
S |
S |
S |
H |
H |
H |
H |
H |
| 17 |
S |
S |
S |
S |
S |
S |
S |
S |
S |
S |
| A,2 |
H |
H |
D |
D |
D |
H |
H |
H |
H |
H |
| A,3 |
H |
H |
D |
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 |
D |
D |
D |
D |
D |
H |
H |
H |
H |
H |
| A,7 |
S |
D |
D |
D |
D |
S |
S |
H |
H |
S |
| A,8 |
S |
S |
S |
S |
D |
S |
S |
S |
S |
S |
| A,9 |
S |
S |
S |
S |
S |
S |
S |
S |
S |
S |
| A,A |
P |
P |
P |
P |
P |
P |
P |
P |
P |
P |
| 2,2 |
H |
P |
P |
P |
P |
P |
H |
H |
H |
H |
| 3,3 |
H |
H |
P |
P |
P |
P |
H |
H |
H |
H |
| 4,4 |
H |
H |
H |
D |
D |
H |
H |
H |
H |
H |
| 6,6 |
P |
P |
P |
P |
P |
H |
H |
H |
H |
H |
| 7,7 |
P |
P |
P |
P |
P |
P |
H |
H |
S |
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 |
Las Vegas Multiple Deck Basic Strategy
| Dealers Up Card | ||||||||||
| Your Hand |
2 | 3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
A |
| 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 |
H |
H |
| 16 | S |
S |
S |
S |
S |
H |
H |
H |
H |
H |
| 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 |
D |
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 |
D |
D |
D |
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 |
| A,A | P |
P |
P |
P |
P |
P |
P |
P |
P |
P |
| 2,2 | H |
H |
P |
P |
P |
P |
H |
H |
H |
H |
| 3,3 | H |
H |
P |
P |
P |
P |
H |
H |
H |
H |
| 4,4 | H |
H |
H |
H |
H |
H |
H |
H |
H |
H |
| 6,6 | H |
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 |
Atlantic City Multiple Deck Basic Strategy Table
| Dealers Up Card | ||||||||||
| Your Hand |
2 | 3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
A |
| 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 |
H |
H |
| 16 | S |
S |
S |
S |
S |
H |
H |
H |
H |
H |
| 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 |
D |
D |
D |
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 |
| A,A | P |
P |
P |
P |
P |
P |
P |
P |
P |
P |
| 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 |
| 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 |


