Blackjack basic strategy: American rules | 21Count

Blackjack basic strategy: American rules 6 decks, dealer hits soft 17, double on any two cards, double after split allowed, late surrender

Hard hands: player total against dealer up-card
Player Hand / dealer up-card	2	3	4	5	6	7	8	9	10	A
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	Rh	Rh
16	S	S	S	S	S	H	H	Rh	Rh	Rh
17	S	S	S	S	S	S	S	S	S	Rs
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
21	S	S	S	S	S	S	S	S	S	S

Soft hands: Ace plus card against dealer up-card
Player Hand / dealer up-card	2	3	4	5	6	7	8	9	10	A
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	Ds	Ds	Ds	Ds	Ds	S	S	H	H	H
A,8	S	S	S	S	Ds	S	S	S	S	S
A,9	S	S	S	S	S	S	S	S	S	S

Pairs: when to split against dealer up-card
Player Pair / dealer up-card	2	3	4	5	6	7	8	9	10	A
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
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	Rp
9,9	P	P	P	P	P	S	P	P	S	S
10,10	S	S	S	S	S	S	S	S	S	S

H Take another card
S Keep your current hand
D Double if allowed, otherwise Hit
Ds Double if allowed, otherwise Stand
P Separate pairs into two hands
Rh Surrender if allowed, otherwise Hit
Rs Surrender if allowed, otherwise Stand
Rp Surrender if allowed, otherwise Split

Blackjack strategy chart by 21Count