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Basic Strategy Chart

Statistically optimal play for every (player hand, dealer upcard) pair. Toggle rules — chart updates live.

Hard2345678910A
5
H
H
H
H
H
H
H
H
H
H
6
H
H
H
H
H
H
H
H
H
H
7
H
H
H
H
H
H
H
H
H
H
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
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
18
S
S
S
S
S
S
S
S
S
S
19
S
S
S
S
S
S
S
S
S
S
20
S
S
S
S
S
S
S
S
S
S
HHit
SStand
DDouble / Hit
PSplit
RSurrender / Hit