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If you’ve spent any time studying blackjack basic strategy, you’ve probably heard that you should always split aces and eights. The goal of this post is to explain why this is the appropriate move in almost any variation of blackjack. It doesn’t matter what the dealer’s face-up card is, by the way. Splitting aces and eights is always the right move.A Note on “Basic Strategy”
A guide to when you should & shouldn’t split in blackjack. Always split Aces & Eights, but never split Fives & Tens. Rules about re-splitting are covered, too. Same is with splitting cards with the same value. Some games will let you split a 10 and a Queen, others won’t, allowing only for identical cards to be split. You may also stumble upon an online blackjack variant which does not allow doubling down after splitting. In the example, you split a pair of 6s and receive 5 at one hand; some games.
If you’re new to blackjack, you might not have heard what basic strategy is. In brief, it’s a table of the mathematically correct moves to make in any blackjack situation.
You have 2 pieces of information, which are cross-referenced on a blackjack basic strategy chart:
*What’s in your hand
*Half of what’s in the dealer’s hand
In your hand, you have a soft total, a hard total, and possibly a pair of cards of the same rank.
In the dealer’s hand, you know one of his or her cards. In almost all blackjack variations, the dealer gets one card face-up.
The correct decision in any of these situations is the one with the highest mathematical expected return.
If you make the correct mathematical decision on every hand, you reduce the house edge that the casino has over you to its lowest possible number—usually between 0.5% and 1%, depending on the rules at the casino. Bwin live casino bonus.How Splitting Cards in Blackjack Works
One of the options you have in blackjack is “splitting” a pair of cards of the same rank. When you do this, you start 2 hands. The first card of each of those hands is one of the 2 cards from your original hand.
You also must put up another bet when you split your hand. You then play each hand independently of each other.
You could win both the new hands, lost both the new hands, or lose with one and win with the other.
Basic strategy tells you that you should never splits 4s, 5s, or 10s. It also tells you that you should always split aces or 8s.Why You Do the Things You Do in Basic Strategy
Basic strategy has been derived by mathematicians and computer programs who run simulations of millions of hands. They look at the results of those hands to determine the playing decision which wins the most or loses the least amount of money in each situation.
But some of the thinking behind basic strategy makes sense, too.
Here’s an example:
You should never split 10s, no matter what the dealer’s upcard is.
Why not?
You have a hard total of 20. The only possible hand that could beat that 20 is a 21. It’s such a good hand that it’s hard to imagine improving your chances by creating 2 new hands—even though any hand which starts with a single 10 is going to turn out pretty good.
Let’s think about how many cards left in the deck will improve on a hard total of 20.
If you get a 10 on your new hand, that’s great. You now have what you would have had originally. You have 14 cards left in the deck which are worth 10 points. (There are 16 of those cards to begin with, but you already have 2 of them.)
If you get an ace, that’s even better. You get 3 to 2 on your payout. That’s not as likely as getting another 10, though. There are only 4 aces in the deck.
All the other cards, though, give you a worse hand. That’s a total of 32 cards which will give you a hand that’s not as good as your original hand. That’s about a 65% chance of getting a hand with a total not as good as you started with.
And some of those cards are rough, too. You get a 2, 3, 4, 5, or 6, and you have a stiff hand. That’s a hand that’s unlikely to beat the dealer unless you hit it. But it’s also a hand that has a good chance of going bust if you hit it.
This kind of thinking—about how good your total is, and about how the remaining cards in the deck might affect that total—is crucial to an understanding of basic strategy.
Let’s look at one more example:
You should also never split 5s. That’s a hard total of 10.
That’s a lousy total as it stands, but it’s a total you can’t bust with an additional card. Any card will improve your total, and a lot of those cards will give you a hand you’ll feel good about standing on. You have 16 cards worth 10 left in the deck, and 4 aces. That’s 20 cards that will give you a total of 20 or 21.
If you get a 7, 8, or 9, you also have a solid total you can feel good about. That’s another 12 cards, for a total of 32 cards which will improve your total.
Even if you get a 2, 3, 4, 5, or 6, it’s not the end of the world. You’re liable to get a stiff hand, but it’s not as likely as getting a good hand.
But what would happen if you split those 5s?
You’d wind up with 2 hands with a starting card of 5. It’s impossible to get a card on top of that to make you feel good about your hand. If you get an ace, you have a soft 16, and that’s probably the best you can hope for. If you get a 10, you have a total of 15, which is awful. It won’t beat the dealer, and it’s likely to bust when you take another card.
The other, lower value cards don’t help much either. A 9 gives you a total of 14, which is also awful. An 8 gives you a total of 13. Nothing to write home about there, either.What Happens When You Split Aces
A hand of 2 aces that you don’t split is just a soft total of 12. That’s not terrible, because it’s hard to bust. But it’s not likely to win.
On the other hand, if you take a mediocre hand and turn it into 2 really good hands, you’ve accomplished something.
And let’s face it—anyone with a brain in his or her head knows that an ace is the best possible starting card in blackjack. If you get a 10 on top of that ace, you have a blackjack, which pays off at 3 to 2.
In fact, in a lot of casinos, you can split those aces and then immediately double down on them.
Remember, you have 16 cards worth 10 points each in the deck—more than any other specific total. Most of the cards aren’t worth 10 points, but enough of them are that you can be optimistic about getting that natural at least some of the time.
But if you miss your 10, you still wind up with a good hand almost every time. If you get a 9, you have a total of 20, which is a great hand. If you get an 8, you have a total of 19, which is good. Even a 7 leaves you with a total of 18.
If you get a 6 or less, you don’t have such a great hand. But because one of the cards is an ace, you’re going to be able to try to improve that hand with little fear that it’s going to bust.What Happens When You Split Eights
First, if you have a hand made up of 2 eights, you have a hard total of 16. That’s a lousy hand. You’re probably going to stand rather than take an additional card. Either way, you’re unlikely to win. If you stand, the dealer will probably wind up with a better total than you. If you hit, you’re probably going to bust.
On the other hand, if you split this into 2 new hands, each with a starting card of 8, a lot of good things can happen.
16 of the cards in the deck are worth 10 points, so you have a reasonably good chance of getting a total of 18 on your new hand.
If you get a 9, you have a total of 17, which is also a big improvement.
If get another 8, which is unlikely, since you already have 2 of them, you’re no worse off than you were to begin with.But What If the Dealer Has a 9 or 10 Upcard?
Thoughtful blackjack players might wonder why you would split 10s or 8s in the face of a dealer’s upcard of 9 or 10. After all, the odds are good that the dealer will beat you. Aren’t you just losing twice as much money by splitting in this situation?
The crucial factor to keep in mind is whether you’ll win more in the long run or lose more in the long run by making a specific decision. In the case of a dealer 9 or 10, you’re not trying to win more often. You’re just trying to lose less often.
This is built into the logic of the game and into the logic of basic strategy.
Here’s an example:
Any total of 12, 13, 14, 15, 16, or 17 is probably going to lose to the dealer—more than 51% of the time, anyway. And you’ll see one of those totals a little more than twice out of every 5 hands.
The best you can do in that situation is try to lose less often than you would if you made another decision.
Let’s say you face a dealer upcard of 9, 10, or ace with a pair of 8s. If splitting weren’t an option, the correct strategy would be to hit the hard total of 16. You’d lose $52 out of every $100 you bet in this situation. (It seems like you’d lose more often than that, even, but remember—the dealer doesn’t always have an ace in the hole.)Do You Always Split 8s In Blackjack
But if you split that into 2 hands that each start with an 8, you’ll lose $43 of every $100 you bet in this situation. Yes, you’ve put twice as much money into the situation. But each of those should be thought of as 2 bets with a better on-average outcome than the one bet with a terrible possible outcome.
These are both losing situations, but one situation saves you $9 on average per $100 bet.
In fact, you’ll sometimes get some grief from the other players or even the dealer when you make this decision. The best thing to do is ignore them. They mean well, but they clearly don’t understand the math behind the game or behind basic strategy.
As an aside, I used to employ a former blackjack dealer to clean my house. Her understanding of the game and the math behind it was abysmal. Don’t make the mistake of thinking that just because someone deals blackjack for a living means they understand how to minimize the house edge.
Always follow basic strategy, and always ignore other people who advise you to do something different.Splitting Aces Is a No-Brainer, Though
Even people who are a little confused about basic strategy in blackjack understand the logic behind splitting aces. You’ll occasionally run into someone who’s too timid or too under-bankrolled to make the mathematically best choice. If you’re in a helpful mood, you might offer to cover the extra bet for that person at no risk to them. The dealer might or might not allow this. The player might or might not take you up on it.
But if he or she does, it’s a good deal, because you have an excellent chance of getting that 3 to 2 payout for a blackjack.
If you’re counting cards, you might even be in a situation where the deck is rich in 10s. In this case, such a play makes even more sense. That’s the reason card counting works, after all—it measures the ratio of 10s and aces in the deck to the number of lower cards in the deck.Splitting and Re-Splitting Aces
It’s possible when you split aces to get another ace on top of one or both of your new hands. In that case, if the casino allows it, you should split again. You could easily wind up with 4 hands in play at a time, all of which stand an excellent chance of turning into a blackjack.
Not all casinos allow this, and it’s easy to see why. At many casinos, after you split aces, the casino only lets you take one additional card. If you were to get another ace and not have the option of re-splitting, the casino has you. A total of 12 versus almost any dealer total is a likely loser.
Luckily, that doesn’t come up often enough to worry about it. Just remember that you always split aces, regardless of the dealer’s upcard, and you’ll be fine.Conclusion
And that’s my explanation of why you should always split aces and 8s when playing blackjack. The dealer’s upcard doesn’t matter in any situation. You’ll either win more money more often or lose less money in the long run.
Splitting aces is an aggressive move that increases your winnings dramatically. Splitting 8s is a defensive move that helps to minimize your long-term losses.
Both are the mathematically correct play.
Splitting is an interesting component of playing Blackjack that allows you to enter two hands in the same round if the first two cards in your initial hand are of the same value. So what is splitting, when can you do it and when should you? Read on to find out.What is splitting in Blackjack?
A player can split in a round of Blackjack if their opening two cards are of the same value. This means any pair from Ace through to nine and any two cards valued at ten (for instance, a ten and a Queen).
If a player decides to split, they must place a second bet for that round of the same value as their original bet, essentially doubling their stake. The two cards are then treated as the first card of two new independent hands that are played out separately. Should one of these hands become a pair, the player is allowed to split again and enter a third hand whilst tripling their stake, and so on.
Generally, you are allowed to hit or double down on a split hand, with the exception of if you have split two Aces, in which case the two hands are often not allowed to consist of more than two cards. In some cases, a Blackjack achieved on a split hand will not count as such, and simply be valued at 21.
In a game of Blackjack, opportunities to split will likely be rare. You have an approximate 0.5% chance of getting any pair from Aces to nines in your opening two cards, and a 9.4% probability of getting two cards valued at ten.When to split in Blackjack
It is arguably universally agreed that there are two scenarios in which you should always split: if you have a pair of Aces or a pair of eights.You must carefully consider if you are going to split in Blackjack.
While you are likely to be prohibited to getting only one more card on two split Aces, this nonetheless presents two separate opportunities to get Blackjack. There will be an approximate 30.4% chance of a hand starting on an Ace getting Blackjack, equating to a 51.6% probability that at least one of your two hands will do so.
Meanwhile, a pair of eights presents a value of 16. This is widely considered to be the weakest opening hand in Blackjack, by virtue of the fact it is one beneath the minimum value of 17 that the dealer is required to finish on (meaning it is always likely to lose) but has a significant risk of going bust when hitting. Splitting a pair of eights averts this problem.
For a pair of nines, you should split in all circumstances unless the dealer’s face up card is a seven, worth ten or an Ace, in which case you should stand. If the dealer’s face up card is a seven, the most likely outcome is that their second card will be worth ten, meaning they will be forced to finish the round with a hand worth 17, less than your hand’s value of 18.Should You Split 8’s In Blackjack
If the face up card is worth ten or an Ace then they have a chance to get Blackjack, meaning standing on a value of 18 is the option that presents the best chance of winning.
With the exception of pairs of fives, for pairs between two and seven you should look to split when the dealer’s face up card is certain values between two and seven and they are at the greatest risk of going bust. The information discussed in the last few paragraphs is summarised in the table below:
Blackjack splitting strategy
NB: This table assumes four to eight decks in play and that the dealer hits on a soft 17.When not to split in Blackjack
Under no circumstances should you split on a pair of tens. An opening hand worth 20 is very strong and can only be beat by a Blackjack or a three-card hand worth 21, and the dealer has just an approximate 12.2% chance of getting this in any given round. When splitting a pair of tens, you are likely to end up with two separate hands both worth less than 20, essentially spurning a strong opportunity to win the round by putting yourself at risk of doubling your losses.
You should also never split on a pair of fives. In this situation, the best approach is to double down, as this will provide an approximate 53.8% chance of finishing your turn with a strong hand containing a value of 18 or higher. Cabo rojo casino. The exception here is if the dealer’s face up card is worth ten or an Ace and they therefore have a chance to get Blackjack, at which point you should hit.
For pairs of twos, threes and sevens you should not split if the dealer’s face up card is at least an eight, and for pairs of fours and sixes you should not split if the dealer’s face up card is at least a seven. For pairs of fours, you should also never split if the dealer’s face up card is beneath five, at which point they have a plausible opportunity to build a high value hand via three cards.Enhance your Blackjack strategy
If you’re looking for general advice on how to play Blackjack, read our guide to Blackjack. If you want to learn more on how to inform your Blackjack strategy, remember to read our articles on how to double down and surrender, alongside how to place a side bet and insurance bet.
We also have an article outlining an advanced Blackjack strategy. If you want to learn more about Blackjack beyond how to play the game, you can read about the history of Blackjack.
Should I Split 8s In BlackjackPlay Blackjack on Pinnacle CasinoDo You Always Split 8’s In Blackjack
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