Microgaming composition dependent exceptions
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Two cards
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Three cards
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Four cards
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Five cards
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Six cards
In single deck blackjack, the effect of the removal of certain
cards in certain situations is sufficiently great to enable strategic alterations
to be made that marginally improve the expected return. For example: basic
strategy says to stand on a 12 against a dealer 4. However, if the 12 is
composed of a ten and a two, that ten card reduces by 25% the chance of
busting with the draw of another card - there now being only three 10 cards
remaining in the deck as opposed to four. Hence, although basic strategy
says to stand,
composition dependent strategy says to hit.
The sum total of all the composition-dependent variations doesn't amount
to more than a few tenths of a percent, but in the context of the Microgaming
single deck game the house edge is already sufficiently low for those few tenths
extra to make a respectable difference - 99.87% becomes 99.90%. It would be an almost impossibly
hard slog to learn each one of the variations, but if you want to shave the house
edge down at least a bit more then learn
a few of the simpler ones such as the two-card and three-card alterations
- it makes the game more fun. Thanks again to
The
Wizard Of Odds for use of these charts.
Two Cards
Basic Strategy Changes: None
Exceptions:
Total | Cards | Dealer | Play |
8 | 6+2 | 5 | Hit |
6 |
12 | 7+5 | 3 | Stand |
8+4 |
10+2 | 4 | Hit |
6 |
13 | 10+3 | 2 |
Three Cards
Basic Strategy Changes:
• 12 vs 3 = Stand
• 16 vs 10 = Stand
Exceptions:
Total | Cards | Dealer | Play |
13 | 10+2+A | 2 | Hit |
15 | 5+5+5 | 10 | Stand |
6+5+4 |
6+6+3 |
16 | 6+5+5 | 9 |
8+4+4 |
8+5+3 |
6+6+4 | 10 | Hit |
7+6+3 |
8+6+2 |
9+6+A |
Four Cards
Basic Strategy Changes:
• 12 vs 3 = Stand
• 16 vs 10 = Stand
Exceptions:
Total | Cards | Dealer | Play |
12 | A+2+2+7 | 3 | Hit |
A+2+3+6 |
A+3+3+5 |
2+2+2+6 |
2+2+3+5 |
2+3+3+4 |
15 | A+4+5+5 | 10 | Stand |
A+3+5+6 |
A+2+6+6 |
16 | 2+4+5+5 | 7 |
2+4+5+5 |
3+3+5+5 |
3+4+4+5 |
4+4+4+4 |
A+5+5+5 | 8 |
2+4+5+5 |
3+3+5+5 |
3+4+4+5 |
4+4+4+4 |
4+4+4+4 | 9 |
5+4+4+3 |
5+5+3+3 |
5+5+4+2 |
5+5+5+A |
6+4+4+2 |
6+5+4+A |
8+3+3+2 |
8+4+2+2 |
8+4+3+A |
8+5+2+A |
9+5+A+A |
9+4+2+A |
6+6+2+2 | 10 | Hit |
6+6+3+A |
7+6+2+A |
8+6+A+A |
10+2+2+2 |
Soft 18 | A+2+2+3 | Stand |
Five Cards
Basic Strategy Changes:
• 12 vs 3 = Stand
• 16 vs 10 = Stand
• 16 vs 9 = Stand
Exceptions:
Total | Cards | Dealer | Play |
12 | A+A+3+3+4 | 3 | Hit |
A+2+2+2+5 |
A+2+2+3+4 |
A+2+3+3+3 |
2+2+2+2+4 |
2+2+2+3+3 |
15 | A+A+A+6+6 | 10 | Stand |
A+A+3+5+5 |
16 | A+A+4+5+5 | 7 | Stand |
A+2+3+5+5 |
A+2+4+4+5 |
A+3+3+4+5 |
A+3+4+4+4 |
2+2+2+5+5 |
2+2+3+4+5 |
2+2+4+4+4 |
2+3+3+3+5 |
2+3+3+4+4 |
3+3+3+3+4 |
A+A+4+5+5 | 8 |
A+2+3+5+5 |
A+2+4+4+5 |
A+3+3+4+5 |
A+3+4+4+4 |
2+2+2+5+5 |
2+2+3+4+5 |
2+2+4+4+4 |
2+3+3+3+5 |
2+3+3+4+4 |
3+3+3+3+4 |
10+3+A+A+A | 9 | Hit |
7+6+A+A+A |
10+2+2+A+A |
7+5+2+A+A |
6+6+2+A+A |
7+4+3+A+A |
7+4+2+2+A |
7+3+3+2+A |
6+3+3+3+A |
7+3+2+2+2 |
6+3+3+2+2 |
6+3+3+2+2 | 10 |
7+6+A+A+A |
10+2+2+A+A |
6+6+2+A+A |
Six Cards
Basic Strategy Changes:
• 12 vs 3 = Stand
• 16 vs 7 = Stand
• 16 vs 9 = Stand
• 16 vs 10 = Stand
Exceptions:
Total | Cards | Dealer | Play |
12 | 3+3+3+A+A+A | 3 | Hit |
3+3+2+2+A+A |
3+2+2+2+2+A |
4+2+2+2+A+A |
15 | 6+5+A+A+A+A | 10 | Stand |
16 | A+A+A+A+3+9 | 7 | Hit |
A+A+A+A+6+6 |
A+A+A+2+2+9 |
A+A+A+3+5+5 | 8 | Stand |
A+A+2+2+5+5 |
A+A+2+3+4+5 |
A+A+2+4+4+4 |
A+A+3+3+3+5 |
A+A+3+3+4+4 |
A+2+2+2+4+5 |
A+2+2+3+3+5 |
A+2+2+3+4+4 |
A+2+3+3+3+4 |
2+2+2+2+3+5 |
2+2+2+2+4+4 |
2+2+2+3+3+4 |
2+2+3+3+3+3 |
6+6+A+A+A+A | 9 | Hit |
7+3+3+A+A+A |
7+3+2+2+A+A |
7+2+2+2+2+A |
6+3+2+2+2+A |
6+6+A+A+A+A | 10 |
6+3+2+2+2+A |
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