Blackjack Double Down With Ace
- Blackjack Double Down With Ace Inhibitor
- Blackjack Double Down With Ace Frehley
- Blackjack Double Down With Ace Hardware
- Blackjack Double Down With Ace Inhibitors
Here's why: Let's say you decide to double down with 11 against the dealers Queen. They don't check for the blackjack ahead of time, so now you have double your bet out there. You end up catching a. The double down feature is one of the primary moves in blackjack and one that any blackjack player should become familiar with. To double down is to increase the size of your bet to twice its value. When this happens, you will be dealt one more card and you will have to stand on that particular hand. For each suit, there are nine numbered cards, 2 through 10, and four face cards, a King, Queen, Jack, and an Ace. That’s 13 cards per suit, but again, the suit isn’t important in Blackjack. It’s just good to know. This is NOT a matter of what you or I or anyone else 'does'. Blackjack Computer Simulations where the hand is played out billions of times (doubling vs. Hitting), and the results are then compared provides the absolutely correct decision.
Ace-seven is by far the most difficult hand for the professional blackjack player to handle. Depending on what the dealer is showing, you will either hit, stand, or double down.
Basic Strategy tells us that we should double if the dealer is showing 3 through 6, stand on 2, 7, and 8, and hit on 9, 10, and A. This may come as a shock to some since common sense tells us to stay with an 18 regardless of what the dealer has. Let's look at the math behind the strategy.
First, we must look at A-7 as a plain old 18. Basic Strategy dictates that we stand on a pat 18 regardless of what the dealer is showing; we want to get to 17 or higher and then let Lady Luck determine the outcome. This isn't necessarily the case for a soft 18.
- If the dealer is showing a 2, the return on an 18 is $.12 for each dollar invested.
- For 3 through 6, this jumps up ranging from $0.40 to $0.50 per dollar.
- 7 is also $0.40.
- At 8, it goes back down to $0.11.
- 9 through A plummets into a negative return of $0.18 to $0.10 loss per dollar.
So is it really worthwhile to go against the common sense factor and hit an 18 if the dealer is showing 9-A?
- Hitting A-7 on a dealers 9 gives us a negative return of $0.10,
- 10 a negative return of $0.14, and
- Ace a negative return of $0.09.
The spread here, while not seeming like much, is less than the -$0.18 to -$0.10 return of staying. To minimize the damage, hitting on these cards is a necessity.
Doubling is the third option with this hand. In this case, you count the hand as an 8 and pray for a 9 or 10, or you count it as an 18 and hope for an Ace through 3.
First of all, doubling when the dealer is showing:
- 9 through A gives us a -$0.29 to -$0.36 return, far greater of a loss than hitting. So doubling on those cards is out of the question.
- Doubling on 8 is also a negative return (-$0.03), whereas it's a positive return to hit. Again, out of the question.
- Doubling on 7 is a positive return of $0.22, which is less than the $0.40 you will get with staying. If the dealer is showing a 7, it makes economic sense to stand.
- Doubling on the dealer's 2 is also $0.12 return, but it is less than a cent less difference of a return than standing. In the long run, this adds up to major dollars, believe me. You will want to stay rather than risking the double in this case.
- That leaves 3 through 6. The math here gets tricky, so pay careful attention. The numbers above regarding standing on 18 don't take into account the power of the Ace. As you know, the Ace can be counted as either a 1 or an 11, and because of this, hitting on A-7 is not nearly as dangerous as hitting a pat 18. In fact, the 23% (3/13) chance of drawing a card to better your 18 makes the diminished return on doubling the right move.
While the return ranges from $0.18 to $0.38 (compared to the $0.40 to $0.50 of staying), the 23% odds of improving plus the doubled amount of money pumped into the hand make doubling the most profitable choice.
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More on How to play Blackjack
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Introduction
Blackjack Double Down With Ace Inhibitor
Rule variations will have an effect on the player's expected return. The numbers below show the effect on the player's return under various rules and after taking into consideration proper basic strategy adjustments. These changes are relative to the following rules: eight decks, dealer stands on soft 17, player may double on anyfirst two cards, player can double after splitting, playermay split to 4 hands.
Blackjack Double Down With Ace Frehley
Blackjack Rule Variations
Blackjack Double Down With Ace Hardware
| Rule | Effect |
|---|---|
| Blackjacks pay 2 to 1 | +2.27% |
| Triple down on any two cards | +1.64% |
| Five cardCharlie1 | +1.46% |
| Optional half win for 5-card Charlie9 | +0.77% |
| Suited blackjacks pay 2 to 1 | +0.57% |
| Player 21-points is automatic winner | +0.54% |
| Single deck | +0.48% |
| Early surrender against ace | +0.39% |
| Player 21 vs. dealer blackjack is a push | +0.35% |
| 5-card win pays 3-2 | +0.33% |
| Blackjack tie pays 3 to 2 | +0.32% |
| Six-card Charlie pays 3 to 2 | +0.31% |
| Early surrender against ten | +0.24% |
| 5-card (or more) 21 automatically pays 2 to 1 | +0.24% |
| Player may double on any number of cards | +0.23% |
| Ace and 10 after splitting aces is a blackjack (paying 3-2) | +0.21% |
| Player may draw to split aces | +0.19% |
| Double deck | +0.19% |
| Six card Charlie1 | +0.16% |
| Player may double, double for less, or stand after splitting aces | +0.15% |
| Tied blackjack pays 1-2 | +0.11% |
| Ace and 10 after splitting aces is a blackjack (paying 6-5) | +0.11% |
| Double Down Rescue | +0.10% |
| 6-card win pays 2-1 | +0.09% |
| Player may resplit aces | +0.08% |
| Player may double or stand after splitting aces | +0.08% |
| Late surrender against ten | +0.07% |
| Four decks | +0.06% |
| 7-card win pays 5-1 | +0.05% |
| 777 pays 3 to 1 automatically | +0.05% |
| Five decks | +0.03% |
| 777 pays 2 to 1 automatically | +0.03% |
| Six decks | +0.02% |
| Seven card Charlie1 | +0.01% |
| Late surrender against ace | +0.00% |
| Dealer must stop with six cards | +0.00% |
| Late surrender after splitting | +0.00% |
| Split to only 3 hands | -0.01% |
| No-peek: ace showing2 | -0.01% |
| BB+13 | -0.01% |
| Dealer secretly goes first5 | -0.02% |
| OBBO4 | -0.03% |
| European no hole card (splitting)7 | -0.03% |
| European no hole card (doubling)7 | -0.08% |
| Player may double on 9-11 only | -0.09% |
| No-peek: ten showing6 | -0.10% |
| Player may not resplit | -0.10% |
| European no hole card7 | -0.11% |
| Player may not double after splitting | -0.14% |
| Player may double on 10,11 only | -0.18% |
| Player may not split aces | -0.18% |
| Dealer hits on soft 17 | -0.22% |
| Blackkjack pays 7-5 | -0.45% |
| Player may not split | -0.57% |
| Red blackjack pays 2-1, Black blackjack pays 3-2, Mixed blackjack pays 1-1 | -0.57% |
| Blackjack pays 6-5 | -1.39% |
| Player may not double | -1.48% |
| Player loses 17 ties | -1.87% |
| Player may not double nor split | -1.91% |
| Blackjacks pay 1 to 1 | -2.27% |
| Player loses 17,18 ties | -3.58% |
| Player loses 17-19 ties | -5.30% |
| Dealer bust on 22 is a push8 | -6.91% |
| Player loses 17-20 ties | -8.38% |
| Player loses 17-21 ties | -8.86% |
Blackjack Double Down With Ace Inhibitors
Notes
- A 'Charlie' is an automatic winner. For example the five-card Charlie rule means the player automatically wins with 5 cards, as long as he didn't bust.
- Dealer does not peek for blackjack with an ace up. If dealer has a ace-up blackjack, player loses all bets made, including from doubling and splitting. A 10-up blackjack will be revealed immediately after peeking, and the player will lose only his original wager, except a blackjack tie will push.
- BB+1 refers to an Australian rule, in which the player will lose all busted bets, plus one unit, if the dealer gets a blackjack. For example, if the player splits 8's to three hands of a 20, (doubled) 19, and a busted hand, and the dealer get a blackjack, then the player will lose 2 units, one for the busted hand, and one from the remaining 3 units on the table. There is a great deal of confusion for the term for his rule, some sources calling it 'OBBO,' for Original and Busted Bets Only.
- OBBO stands for Original Bets and Busted Only. 'Original Bets' means each original bet per hand. So, if the player bet $5 and split to three hands, he would have three original bets of $5 each. As far as I know, the OBBO rule is confined to some parts of Australia and Malaysia. In the example above, the player would lose 3 units under this rule, one for the busted hand and two for the number of unbusted hands. The term is discussed in depth in the bookThe Pro's Guide to Spanish 21 and Australian Pontoon by Katarina Walker.
- This strange rule is actually followed in Pennsylvania, on Shufflemaster TMS-300 video multi-player blackjack games. State law prohibits one player taking the cards of another player. The way they implement this rule is to give every player, and the dealer, a separate shoe. The dealer plays out his hand first, secretly, and the results stored in memory. Then the cards used by the dealer are removed for each player shoe. When all players have finished acting, the game shows what cards the dealer drew already. According to Shufflemaster, the effect of this rule is 0.02% in favor of the dealer. Shufflemaster wishes to add this rule is part of a patent-pending technology.
- Dealer does not peek for blackjack with a 10 up. If dealer has a 10-up blackjack, player loses all bets made, including from doubling and splitting. An ace-up blackjack will be revealed immediately after peeking, and the player will lose only his original wager, except a blackjack tie will push.
- Dealer does not take a hole card, or never peeks at it if he does. If the dealer has a blackjack, then player loses all bets made, including from doubling and splitting, except a blackjack tie will push. The cost of this rule to the player is 0.08% when doubling, and 0.03% when splitting. This breakdown is important in the case of Galaxy casinos in Macau, where the player only loses the original bet when doubling, but everything when splitting, if the dealer gets a blackjack.
- The push on a dealer 22 rule is a legally protected rule. The rights belong to the owner of Blackjack Switch.
- This rule can be found at the Pharaoh's Palace in Macau. The player may invoke the rule before the dealer checks for blackjack. The effect shown is based on the dealer not taking a hole card.
Written by: Michael Shackleford