Every card played in a single deck blackjack hand affects how the remaining cards are distributed in a significant way. In the event that the dealer hits a soft 17, the following lists will outline exactly how you should play your cards after the shuffle in a single deck game. My calculations show that adhering to these deviations from the basic strategy will reduce the house edge by 0.0010%.

Go to the list based on how many cards you have in your hand before using this guide. Next, take note of the fundamental strategy modifications, and lastly, the changes' exclusions. Look under the 3 card list, for instance, if your hand is a 16 made up of a 10, 4, and 2 against a 10. You'll discover that, with three cards, you ought to be able to stand 16 against 10. As you continue, you'll notice that there are a few exceptions. For instance, you should hit if the 16 is made up of a 6, 6, and 4. You should stand if your hand is not included in the list of exceptions. This is not intended to be a guide for card counting. Nothing is based on numbers; everything is based on exact cards.

Two Cards

Basic Strategy Changes: None

Exceptions:

8 (6+2) vs 6 = Hit
12 (7+5) vs 3 = Stand
12 (8+4) vs 3 = Stand
12 (10+2) vs 4 = Hit

Three Cards

Basic Strategy Changes:

12 vs 3 = Stand
16 vs 10 = Stand

Exceptions:

15 (5+5+5) vs 10 = Stand
15 (6+5+4) vs 10 = Stand
15 (6+6+3) vs 10 = Stand
16 (6+5+5) vs 9 = Stand
16 (8+4+4) vs 9 = Stand
16 (8+5+3) vs 9 = Stand
16 (6+6+4) vs 10 = Hit
16 (7+6+3) vs 10 = Hit
16 (8+6+2) vs 10 = Hit
16 (9+6+A) vs 10 = Hit

Four Cards

Basic Strategy Changes:

12 vs 3 = Stand
16 vs 10 = Stand

Exceptions:

12 (2+2+2+6) vs 3 = Hit
12 (2+2+3+5) vs 3 = Hit
12 (2+3+3+4) vs 3 = Hit
15 (A+4+5+5) vs 10 = Stand
15 (A+3+5+6) vs 10 = Stand
15 (A+2+6+6) vs 10 = Stand
16 (6+6+2+2) vs 10 = Hit
16 (6+6+3+A) vs 10 = Hit
16 (7+6+2+A) vs 10 = Hit
16 (8+6+A+A) vs 10 = Hit
16 (10+2+2+2) vs 10 = Hit
16 (4+4+4+4) vs 9 = Stand
16 (5+4+4+3) vs 9 = Stand
16 (5+5+3+3) vs 9 = Stand
16 (5+5+4+2) vs 9 = Stand
16 (5+5+5+A) vs 9 = Stand
16 (6+4+4+2) vs 9 = Stand
16 (6+5+4+A) vs 9 = Stand
16 (8+3+3+2) vs 9 = Stand
16 (8+4+2+2) vs 9 = Stand
16 (8+4+3+A) vs 9 = Stand
16 (8+5+2+A) vs 9 = Stand
16 (9+5+A+A) vs 9 = Stand
16 (9+4+2+A) vs 9 = Stand

Five Cards

Basic Strategy Changes:

12 vs 3 = Stand
16 vs 10 = Stand
16 vs 9 = Stand

Exceptions:

12 (A+2+2+2+5) vs 3 = Hit
12 (A+2+2+3+4) vs 3 = Hit
12 (A+2+3+3+3) vs 3 = Hit
12 (2+2+2+2+4) vs 3 = Hit
12 (2+2+2+3+3) vs 3 = Hit
15 (A+A+A+6+6) vs 10 = Stand
15 (A+A+3+5+5) vs 10 = Stand
16 (6+3+3+2+2) vs 10 = Hit
16 (7+6+A+A+A) vs 10 = Hit
16 (10+2+2+A+A) vs 10 = Hit
16 (6+6+2+A+A) vs 10 = Hit
16 (10+3+A+A+A) vs 9 = Hit
16 (7+6+A+A+A) vs 9 = Hit
16 (10+2+2+A+A) vs 9 = Hit
16 (7+5+2+A+A) vs 9 = Hit
16 (6+6+2+A+A) vs 9 = Hit
16 (7+4+3+A+A) vs 9 = Hit
16 (7+4+2+2+A) vs 9 = Hit
16 (7+3+3+2+A) vs 9 = Hit
16 (6+3+3+3+A) vs 9 = Hit
16 (7+3+2+2+2) vs 9 = Hit
16 (6+3+3+2+2) vs 9 = Hit

Six Cards

Basic Strategy Changes:

12 vs 3 = Stand
16 vs 9 = Stand
16 vs 10 = Stand

Exceptions:

12 (3+3+3+A+A+A) vs 3 = Hit
12 (3+3+2+2+A+A) vs 3 = Hit
12 (3+2+2+2+2+A) vs 3 = Hit
15 (6+5+A+A+A+A) vs 10 = Stand
16 (6+6+A+A+A+A) vs 10 = Hit
16 (6+3+2+2+2+A) vs 10 = Hit
16 (6+6+A+A+A+A) vs 9 = Hit
16 (7+3+3+A+A+A) vs 9 = Hit
16 (7+3+2+2+A+A) vs 9 = Hit
16 (7+2+2+2+2+A) vs 9 = Hit
16 (6+3+2+2+2+A) vs 9 = Hit