Blackjack rules may even vary at different tables in a casino. Some casinos only allow players to double after splitting certain cards. The more changes to the original rules of blackjack usually mean that the house edge is increasing. When the blackjack rules allow players to double after splitting the casino loses a bit of their advantage.
Double Down? So what does Double Down mean in Blackjack and why is it such a popular strategy?
In short, it is bumping up your initial bet by 100% and staying in the game after only receiving one more card. It might seem like a risky strategy and for some doubling their winnings is the main motivator, but there can be some good reasons behind such a bold move.
The beauty about Blackjack Double Down is that there are some useful and well defined rules based on mathematical probability and tested by generations of players.
That said, the calculability of a hand's success is not a guarantee of its profitability, nor does it rob the game of its excitement.
Watch a tutorial here. Credit: androidslots.co.uk
Double Down Rules. Double down on 10, 11 - Almost universal, this rule allows doubling down on two cards totaling 10 or 11 without using an Ace. On extremely rare occasions, you might find a casino that only allows double down on 11. These games should be avoided as the penalty is.45.52. You may also double down to an amount less than the initial wager if the casino has this exception to its rules on blackjack decisions. One of the best times to double down is when you have 11 cards or more, and the dealer's hand is at 6 or lower. After you found out what is double down in blackjack, it is a matter of a great importance to be aware of the situations when it is necessary to double down in blackjack. When the game starts, you get two playing cards while the dealer receives just one card.
Blackjack Double Down – A Numbers Game
Firstly, however green you are to Blackjack, we can all agree that the highest number you can sensibly get is 21. Secondly, we're out to beat the dealer, either by having the higher value hand, or watching them go bust.
From there on in it's a case of using statistics to your advantage. This means that whenever you've drawn one of the lower 6 cards, there remains a high statistical probability that the remaining cards are all more likely to be a help rather than a hindrance.
Equally, when the dealer draws a 4; 5; or 6, they are statistically more likely to go bust. It therefore seems quite reasonable that when these two scenarios are in play, Blackjack Double Down may well be a good payoff.
Jumping the Gun
Blackjack 21 tutorial. Sadly, many players can become a little hyper focused, looking at only the dealers hand or their own and basing their decision to Double Down on that one factor.
For example, many players will draw a 9 and Double Down if the dealer has anything other than a 10. This is strategically flawed and will lead to a significant loss over time.
The other ill-judged manoeuvre is for a player to split a pair of 5's, which in itself is a risk. A sensible rule here is to keep them together and treat them like a 10. That way you stand a better chance when Doubling Down.
Blackjack Double Down Rules
Rules can vary slightly between casinos, but generally Doubling Down can be used after the player draws their first two cards. Some venues, both online and real-world allow Doubling Down on a Blackjack, whilst others can restrict its use to totals of 9; 10; or 11.
Wherever you play, make sure you know the house rules before you play.
Where it is permitted, splitting a hand into a pair and then doubling down can be useful, but as already mentioned, use this with caution.
Once you have signalled your intention to Double Down, you place your wager. Normally this is 100% your original bet, though some casinos will allow a less-than-double additional wager. Poker saint amand tournoi.
Once you have signalled your intention to Double Down, or simply pressed the relevant button in an online casino, only one more card can be drawn for the player, and they are committed to play.
How to Double Down in Blackjack?
Plenty of rookies have come unstuck, learning the various strategies for making a good Blackjack Double Down play, but not paying attention to its execution.
Etiquette and protocol are a must if you're not going to spoil the atmosphere at the table. Thankfully online gaming has made the embarrassment from a faux pas less of weighty on the ego, however, you could still miss out if you don't know when to make the right move.
In short, most games expect the Double Down to be executed immediately after being dealt their second card. If you accidentally hit, you'll miss your chance and that would really be a shame.
History
The question of when to double down in Blackjack is one that was answered back in the 1950's when Magician John Scarne took the time to work out the mathematics behind the King of Casino games, Blackjack. His work, published in a book ‘Scarne's New Complete Guide to Gambling' described the odds and various plays to be able to make the best possible calls.
The amazing thing about his work is that it still stands true today, with the mathematics and odds transcending time and permeating every Blackjack table in the world.
Today there are many Blackjack Double Down charts that simplify the learning process so that committed players can memorise the best plays.
The Strategies
When to double in blackjack is one of the most asked questions about the game. The best advice originates mainly from John Scarne's work and has been published and republished in various forms. However, a problem arises whenever that advice is shortened or misquoted.
For example, if the player has drawn 11, they should Double Down, or so the rule says. In reality, there are factors that can influence the probability of this being a successful strategy.
The main one being what cards are left in the deck. Now this question is mainly one reserved for card counters who are able to discern whether the remaining deck is negative heavy, i.e. full of low cards, or not.
In this case, Doubling Down could be risky, especially if the dealer is showing a 10 or higher.
In contrast, where the remaining deck is positive, the player can be assured of more 10's and above in the pack and has the option to play more hands that could result in a 20 or 21.
For those without that card counting knowhow, it's usually a good strategy to stick to Doubling Down whenever you have an 11. Princess cruises casino promotion.
What are Hard and Soft Hands then?
Terminology is important, so get it right. Hard Hands don't normally have and Ace unless it is being used as a 1. Soft Hands, conversely will have an Ace being used as either 11 or 1. With this tid-bit of knowledge under our belt, let's move on…
What to do with a Soft Hand
This primarily depends on what the dealer's hand is showing. Using the Rule of 9 can offer some guidance. This is where the Player has drawn an Ace and any card from 2 to 7. Where the player's ‘number' card and the dealer's up-card sum up to 9 or more, the player should Double Down.
Two important exceptions to this rule should be heeded. The first is where the dealer's up-card shows an Ace, the obvious reason being its ability to be played as its lower denomination.
The second is to never Double Down in Blackjack when the deal's up-card is a 7 or above, again, the odds are not with you. So don't do it!
Light work for Hard Hands
There are so many opportunities to Double Down it can feel like you can do it any time, but the reality is that you should choose your moment wisely.
When you have a hard 11, always Double Down, it's too good to miss. You can also take a fairly good risk with a hard total of 10, but don't ever try it when the dealer has a 10 or an Ace.
To Split or not To Split?
Many casinos allow a player to Double Down after they have split their hand. Here the rule is simple, where you have a pair of 5's don't touch them.
Treat them like any other 10 and if the dealer's hand is 9 or less, you would be wise to double down. Any other cards and splitting may be a sensible option.
What the Dealer's Hand Reveals
The dealer's hand is key to knowing how to play your own hand, and thankfully there are some statistics on the bust rates for a dealer's cards.
For example, a Deuce or Three have just under 40% chance of seeing the dealer go bust. Whilst a 4; 5 or 6 raise that probability to just over 40%.
Meanwhile a 7; 8; 9 or 10 only have a roughly 23% chance of working in the player's favour whilst the Ace gives a dismally low 17% chance of seeing the dealer fail.
How To Play Blackjack At A Casino
These figures can give hope to a player, especially when they know they also have a favourable hand, and underlines the premise of being fore warned is being fore armed!
Double Down – Down
There are unfortunately occasions where a player is unable to Double Down, despite all the signs that it is a good move to make. One may be the house rules as we mentioned before.
One piece of advice from the experts is that whenever you find yourself with a soft hand, i.e. a hand with an Ace, then it is usually more prudent to hit rather than go for the Double Down.
The Hard 9
We've already mentioned the propensity for some players to find themselves with a 9 and to jump down the Double Down hole if the dealer has anything other than a 10.
This is flawed thinking. This idea comes from a very valid play in games where you draw a Hard 9.
The important thing to remember is that this has to be in conjunction with when the dealer draws anything lower than a 7, excluding the Ace.
How Much to Bet?
Ultimately, this is a question reserved for the player, but there are two important rules that may help.
The first is never, and this cannot be stressed enough, NEVER Double Down with an additional bet of less than 100%. The whole aim of the play is to maximise on the odds that sit in your favour, so to bet anything less than the maximum allowed is a waste.
Secondly, if the prospect of doubling your bet at a table makes you sweat, even though you know the mathematics is on your side, then you should probably be at a table with lower stakes!
Some Rules of Thumb
It's usually a good idea to Double Down when:
- The player has drawn 11
- The player has 10 and the dealer has 4; 5; 6
- The player has 9 and the dealer has 5 or 6
- Player has an Ace and any card from 2 to 7 when the Player's non-Ace and the dealer's card add-up to 9 or more
- Dealer has a soft 17
- Also, remember that if you have a pair of 5's; you should not be tempted to split them, it's better to consider them as a 10
Top Three Plays
Out of all the pieces of advice, there are probably three plays which give the player the best advantage against the dealer.
The first of those is the Hard 9 which we've already mentioned. This is an excellent play with a very good chance of success.
The second is a similar Hard 10 or 11. Again these should be used against a lower draw from the dealer. As long as the hand is not made up with an Ace and the dealer's hand is lower than yours, Doubling Down is a good move to make.
The third of our Top Three is a Soft 16 to 18. As with the previous two hands we're looking for the dealer to have a low draw. As long as they have anything from 2 to 6 then Doubling Down is going to position the player favourably against the dealer.
Word to the Wise
The other ill-judged manoeuvre is for a player to split a pair of 5's, which in itself is a risk. A sensible rule here is to keep them together and treat them like a 10. That way you stand a better chance when Doubling Down.
Blackjack Double Down Rules
Rules can vary slightly between casinos, but generally Doubling Down can be used after the player draws their first two cards. Some venues, both online and real-world allow Doubling Down on a Blackjack, whilst others can restrict its use to totals of 9; 10; or 11.
Wherever you play, make sure you know the house rules before you play.
Where it is permitted, splitting a hand into a pair and then doubling down can be useful, but as already mentioned, use this with caution.
Once you have signalled your intention to Double Down, you place your wager. Normally this is 100% your original bet, though some casinos will allow a less-than-double additional wager. Poker saint amand tournoi.
Once you have signalled your intention to Double Down, or simply pressed the relevant button in an online casino, only one more card can be drawn for the player, and they are committed to play.
How to Double Down in Blackjack?
Plenty of rookies have come unstuck, learning the various strategies for making a good Blackjack Double Down play, but not paying attention to its execution.
Etiquette and protocol are a must if you're not going to spoil the atmosphere at the table. Thankfully online gaming has made the embarrassment from a faux pas less of weighty on the ego, however, you could still miss out if you don't know when to make the right move.
In short, most games expect the Double Down to be executed immediately after being dealt their second card. If you accidentally hit, you'll miss your chance and that would really be a shame.
History
The question of when to double down in Blackjack is one that was answered back in the 1950's when Magician John Scarne took the time to work out the mathematics behind the King of Casino games, Blackjack. His work, published in a book ‘Scarne's New Complete Guide to Gambling' described the odds and various plays to be able to make the best possible calls.
The amazing thing about his work is that it still stands true today, with the mathematics and odds transcending time and permeating every Blackjack table in the world.
Today there are many Blackjack Double Down charts that simplify the learning process so that committed players can memorise the best plays.
The Strategies
When to double in blackjack is one of the most asked questions about the game. The best advice originates mainly from John Scarne's work and has been published and republished in various forms. However, a problem arises whenever that advice is shortened or misquoted.
For example, if the player has drawn 11, they should Double Down, or so the rule says. In reality, there are factors that can influence the probability of this being a successful strategy.
The main one being what cards are left in the deck. Now this question is mainly one reserved for card counters who are able to discern whether the remaining deck is negative heavy, i.e. full of low cards, or not.
In this case, Doubling Down could be risky, especially if the dealer is showing a 10 or higher.
In contrast, where the remaining deck is positive, the player can be assured of more 10's and above in the pack and has the option to play more hands that could result in a 20 or 21.
For those without that card counting knowhow, it's usually a good strategy to stick to Doubling Down whenever you have an 11. Princess cruises casino promotion.
What are Hard and Soft Hands then?
Terminology is important, so get it right. Hard Hands don't normally have and Ace unless it is being used as a 1. Soft Hands, conversely will have an Ace being used as either 11 or 1. With this tid-bit of knowledge under our belt, let's move on…
What to do with a Soft Hand
This primarily depends on what the dealer's hand is showing. Using the Rule of 9 can offer some guidance. This is where the Player has drawn an Ace and any card from 2 to 7. Where the player's ‘number' card and the dealer's up-card sum up to 9 or more, the player should Double Down.
Two important exceptions to this rule should be heeded. The first is where the dealer's up-card shows an Ace, the obvious reason being its ability to be played as its lower denomination.
The second is to never Double Down in Blackjack when the deal's up-card is a 7 or above, again, the odds are not with you. So don't do it!
Light work for Hard Hands
There are so many opportunities to Double Down it can feel like you can do it any time, but the reality is that you should choose your moment wisely.
When you have a hard 11, always Double Down, it's too good to miss. You can also take a fairly good risk with a hard total of 10, but don't ever try it when the dealer has a 10 or an Ace.
To Split or not To Split?
Many casinos allow a player to Double Down after they have split their hand. Here the rule is simple, where you have a pair of 5's don't touch them.
Treat them like any other 10 and if the dealer's hand is 9 or less, you would be wise to double down. Any other cards and splitting may be a sensible option.
What the Dealer's Hand Reveals
The dealer's hand is key to knowing how to play your own hand, and thankfully there are some statistics on the bust rates for a dealer's cards.
For example, a Deuce or Three have just under 40% chance of seeing the dealer go bust. Whilst a 4; 5 or 6 raise that probability to just over 40%.
Meanwhile a 7; 8; 9 or 10 only have a roughly 23% chance of working in the player's favour whilst the Ace gives a dismally low 17% chance of seeing the dealer fail.
How To Play Blackjack At A Casino
These figures can give hope to a player, especially when they know they also have a favourable hand, and underlines the premise of being fore warned is being fore armed!
Double Down – Down
There are unfortunately occasions where a player is unable to Double Down, despite all the signs that it is a good move to make. One may be the house rules as we mentioned before.
One piece of advice from the experts is that whenever you find yourself with a soft hand, i.e. a hand with an Ace, then it is usually more prudent to hit rather than go for the Double Down.
The Hard 9
We've already mentioned the propensity for some players to find themselves with a 9 and to jump down the Double Down hole if the dealer has anything other than a 10.
This is flawed thinking. This idea comes from a very valid play in games where you draw a Hard 9.
The important thing to remember is that this has to be in conjunction with when the dealer draws anything lower than a 7, excluding the Ace.
How Much to Bet?
Ultimately, this is a question reserved for the player, but there are two important rules that may help.
The first is never, and this cannot be stressed enough, NEVER Double Down with an additional bet of less than 100%. The whole aim of the play is to maximise on the odds that sit in your favour, so to bet anything less than the maximum allowed is a waste.
Secondly, if the prospect of doubling your bet at a table makes you sweat, even though you know the mathematics is on your side, then you should probably be at a table with lower stakes!
Some Rules of Thumb
It's usually a good idea to Double Down when:
- The player has drawn 11
- The player has 10 and the dealer has 4; 5; 6
- The player has 9 and the dealer has 5 or 6
- Player has an Ace and any card from 2 to 7 when the Player's non-Ace and the dealer's card add-up to 9 or more
- Dealer has a soft 17
- Also, remember that if you have a pair of 5's; you should not be tempted to split them, it's better to consider them as a 10
Top Three Plays
Out of all the pieces of advice, there are probably three plays which give the player the best advantage against the dealer.
The first of those is the Hard 9 which we've already mentioned. This is an excellent play with a very good chance of success.
The second is a similar Hard 10 or 11. Again these should be used against a lower draw from the dealer. As long as the hand is not made up with an Ace and the dealer's hand is lower than yours, Doubling Down is a good move to make.
The third of our Top Three is a Soft 16 to 18. As with the previous two hands we're looking for the dealer to have a low draw. As long as they have anything from 2 to 6 then Doubling Down is going to position the player favourably against the dealer.
Word to the Wise
Doubling Down can seem like an unnecessary risk, and it is true that doing it can make or break your time at the table. However, the strategies and rules for identifying the best times to Double Down are tried and tested.
While you may stand to lose more money on each individual attempt, in the long term, Doubling Down is a sensible strategy as the rewards will more than make up for time you take to practice the techniques above.
Just remember to know the Double Down rules of the casino you're in as they are likely to place some restrictions on which of the techniques you can use.
This way you can pick the casino with the most favorable rules, and have more opportunity to see and make those Double Down plays.
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. The double down option gives you the opportunity to make great plays and exponentially increase your winnings potential. While this move does sound cut and dry there are certain subtleties to it and you should not take it lightly. Below, you will find a comprehensive guide about when it is a good idea to double down, as well as the different types of the double down option and the circumstances in which you can use it.
Double Down Variations
Double down comes in a variety of different forms, though some are more commonly seen than others. While you may only be interested in one type, it is a good idea to know the different variations so if you ever come across an unfamiliar type you know what's going on and how to react.
Standard Double Down
The standard double down feature is the one that you will experience the most often. It is a simple as it sounds, all that happens is that you double the size of your bet and you win or lose depending on the outcome. There is nothing complicated to it, though knowing when to double down is a different matter. Additionally, some blackjack variations restrict your ability to double down only on hard totals of 9, 10, and 11.
Doubling Down on Three Cards
This is among the rarest double down variations that you will find in the gambling world since it pushes the odds in the player's favor. While rare, it is not unheard of for casinos to allow this. Typically, you are only permitted to double down on your opening hand which consists of two hands. However, there are some establishments that will give you the option of doubling down after hitting. As you can imagine, this allows you to make much better plays that you would normally have the chance to make. Basically, with this double down variation, you have more options and that is never a bad thing.
Doubling Down for Less
Doubling down for less is an option at some land-based casinos and possibly certain online blackjack variations. The idea is that you increase your bet for a lower amount than its original value. For example, your starting wager is $10 and then the game gives you the option to double down for $5. This is the whole premise behind this double down variation and with that said, you should really avoid doubling down for less whenever possible.
The whole idea behind doubling down, in general, is to maximize your potential profit on the back of a strong hand. By doubling down for less, you reduce your winnings potential by a significant margin and this will hurt not only your bankroll but also how long you can keep playing. Furthermore, having standard double down options keeps the odds closer to you, even if still in the favor of the house. However, by giving up the opportunity to increase your bet, you push the advantage further in the casino's favor and thus, reduce your overall chances of winning.
Show MoreHide MoreLet's run a simulation. Suppose you have a hard 11 against a dealer's 10. In this situation, you come out on top 54% of the time when you double down. At $10 per standard bet, assuming traditional double down rules and that you will double down on such hands, you will win $10*2 * 54 = $1,080 in gross winnings and $10*2 * 46 = $920 in losses, which makes for a net profit of $160.
However, when you play with ‘double down for less' rules, things take a different turn. Assume that you double down for 50% of your original bet ($10 + $5) in the same scenario. Now you have ($10 + $5) * 54 = $810 in gross winnings and ($10 + $5) * 46 = $690 in losses, which makes for a net profit of only $120 or 25% less than you would with standard rules. The profit loss percentage only increases as you reduce the double down amount.
No matter how you split it, doubling down for less is a bad move and you should avoid such tables in favor of those with standard doubling down rules. The only acceptable situation for doubling down for less is when you are low on funds and close to losing what is left of your bankroll. You could make an argument for such cases, yet even then, traditional double down rules will still give you better chances of making it out with something.
Doubling Down on Soft Hands
Something that not many players think about is the effect that an Ace can have on their hand total. As you are aware, the Ace can have a shifting value of 1 or 11, depending on your current total. If your hand is lower than 21, the Ace will count for 11. But if it potentially exceeds 21, the Ace will revert to its 1 value state. For instance, you are dealt a hand of Ace and 3 for a total of soft 14. You choose to hit and receive an 8, for a total of 22. However, since the Ace can also count as 1, your new total is not 22, rather 12.
Something to note is that not all blackjack variations will allow you to double down on soft hands. By their very nature, soft hands are always totals of 13 or more, while certain games only allow you to double down on 9, 10, and 11. With this in mind, choose your game of choice carefully. Granted, where it's allowed to double on any hand, soft totals could potentially be very profitable.
For example, assuming 4-8 decks are in play and you have a soft 13 (Ace-2) against a dealer's 5 or 6, you should double down. If this were a hard total, it would be advisable to stand, however, since you will not automatically bust by going over, you should take advantage. The same can be said of a soft 14 (Ace-3). When it comes to soft 15 (Ace-4) and soft 16 (Ace-5), you should always double down against a dealer's 4, 5, and 6. Having a soft 17 (Ace-6) total is an advantageous position for you, even more so if doubling down is an option. Going into a soft 18 (Ace-7), it is important to take note whether the dealer hits or stands on a soft 17. If they stand, then you should only double down against a dealer total of 3, 4, 5, and 6. However, if they hit a soft 17, then a better approach is to double down against their 2, in addition to the previous totals.
If you hand consists of a soft 19 (Ace-8) or more and the dealer stands on soft 17, you should always stand. But, if they hit a soft 17, you should double down on your soft 19 against their 6. In all other situations, you should either hit or stand.
Doubling Down in Single- and Multi-Deck Games
Doubling down is not the same across multiple variations. When there is a larger number of decks, the odds significantly change as opposed to single-deck versions of the game. Below, we will outline some of the differences between doubling on single-deck and multi-deck variations.
Doubling Down in Single-Deck Variations
If you prefer single-deck blackjack, the conditions under which you want to double down are pretty specific. For example, holding a total of 9 against a dealer's 2 through 6 is an ideal game state to double down. This is due to the fact that your hand will be made up of low-value cards, leaving all the high-value cards and Aces still in the shoe. Moreover, the dealer will also have the same chance of drawing similar cards, thus increasing their chance to bust. In the event that you hold a total of 8 (2-6; 3-5; 4-4) against a dealer's 5 or 6, you should take the same action based on the same logic. When holding a hand total of 11 you want to double down, regardless of the dealer's hand, as the chance to gain the upper hand is prime.
The reason why most of these situations are advantageous in single-deck versions is that doubling down on a low dealer's total in multi-deck variations is too much risk to sustain long-term plays. All in all, single-deck variations give you more leeway in this regard, provided you know what you are doing.
Blackjack Tips
Doubling Down in Multi-Deck Variations
Single-deck variations are popular but more often than not you will come across games played with 4-8 decks. Given the larger number of multi-hand titles, it is important that you also become familiar with those, as well. There is some slight variation if the dealer hits or stands on a soft 17 but we will get to that also. When holding a 9 against a dealer's 3 through 6, it is in your best interest to double down. The same is also true when you hold a total of 10 versus a dealer's 2 through 9. This gives you the best odds at scoring a good hand and getting that larger payout. When you hold a 10 against a dealer's 2 through 10, you should double down. However, if the dealer hits a soft 17 and they hold an Ace, you should double down in that situation as well.
Doubling Down Tips
Doubling down is a crucial aspect of blackjack, one that has a great effect on your success in the game. But just like it can bring in a lot of profit, it can also ruin your bankroll if you use it carelessly. A double down is a calculated risk, allowing you to benefit from a statistical advantage in any given moment. There is a right time to use any move allowed in the game and it is empirical to learn when the appropriate time for each is. When it comes to doubling down, you are expected to do so in less than half of all possible situations. Therefore, do not expect to make all of your profit from it. Doubling down is a tool that you use when the occasion calls for it and when you stand to make a profit from it. Of course, you should also not expect every time you double down for the game to simply give you money. You will likely lose quite often, but if you play right, you will win more than you lose.
If you take away anything from this article, let it be this:
Blackjack Double Down Rules
- Double down on 9 against dealer's 3 – 6 total
- Double down on 10 against dealer's 2 – 9 total
- Double down on 11 against dealer's 2 – 10 total (if dealer hits soft 17 double down on Ace, as well)
- Double down on soft 13/14 against dealer's 3 – 6 total (if allowed, otherwise hit)
- Double down on soft 17/18 against dealer's 3 – 6 total (if allowed, otherwise stand)
