Black Jack Strategy Table
These tables are based on the assumption that 
there are at least four decks in play at the casino
Assumptions 1) 4 decks or more in play
2) Lose original bet only on dealer blackjack
Dealer's upcard
2 3 4 5 6 7 8 9 10 A
Your total / / / / / / / / / /
17 or more / / / / / H H H H H
16 / / / / / H H H H H
15 / / / / / H H H H H
14 / / / / / H H H H H
13 / / / / / H H H H H
12 H H / / / H H H H H
                   
11 D D D D D D D D H H
10 D D D D D D D D H H
9 H D D D D H H H H H
8 or less H H H H H H H H H H
Rules You have
1 17 or more STAND
2 12 to 16 Dealer has powerful card (7 up) HIT
Dealer has weak card (6 down) STAND
except 12/2 and 12/3
3 11 DOUBLE against all dealer upcards except Ace
4 10 DOUBLE against all dealer upcards except Ace
5 9 DOUBLE against 3, 4, 5 and 6 only
6 8 or less HIT
Notes
1 If dealer takes evertything on his BJ do not double 11 against a 10 just HIT
2 Composition dependant strategies
2.1 Less than 14 decks STAND on 3 or more card
hard 16 versus dealer's 10 upcard
2.2 Less than 7 decksHIT on hard 12 versus dealer's 4
upcard if made up of a 10 and a 2