Blackjack: When Is It Best To Split?

Published Date: 5 Oct 2024|
Last Updated: 2 Nov 2024|
Read Time: 8 mins
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What Does Split Mean in Blackjack?

Splitting in blackjack is a strategic option that can boost your odds of winning. It occurs when you receive two cards of the same rank, like two 8s or two Aces, and decide to split them into two distinct hands. Each hand carries its own separate bet, equal to the original. This strategy allows you to potentially increase your winnings by playing two hands at once, each with a new card drawn. The choice to split is influenced by factors like the dealer’s upcard and plays an important role in blackjack strategy.

Blackjack Split Rules

Grasping the rules of blackjack splitting is crucial for successfully using this tactic in your gameplay. Below are the fundamental rules and other key factors to consider:

Blackjack Split Rules

Basic Rules for Splitting in Blackjack:

Pair Requirement: Splitting is only allowed with cards of the same rank, such as two 8s or two Aces.

Additional Bet: An additional bet matching your original one is required for each new hand created by the split.

New Card Deal: After the split, the dealer will provide a new card to each hand, forming two separate hands to play.

Playing Each Hand: You’ll play each hand separately, choosing to hit, stand, double down, or re-split (if permitted) based on the cards dealt.

Separate Outcomes: Each hand is judged independently, so you could win one hand and lose the other, win both, or lose both, depending on your cards and the dealer's hand.

Can You Re-Split in Blackjack?

In many casinos, players may re-split if they receive an additional pair of the same rank following an initial split. For instance, if you split two 8s and draw another 8, you could split again, potentially creating up to four separate hands. However, since re-splitting rules vary, it’s essential to review the specific casino policies beforehand.

Some casinos do not allow players to re-split Aces. Others set a re-split limit, typically between one and three times. Unlimited re-splits are uncommon.

Can You Double Down After a Split?

In some casinos, you can double down on one or both hands after a split. This option allows you to increase your bet and receive only one additional card per hand. While this rule can boost your winnings, it varies by casino.

Can the Dealer Split?

In standard blackjack, only players are allowed to split pairs, while the dealer cannot. The dealer must adhere to fixed rules, usually standing on 17 or higher and hitting on 16 or lower, with no option to split pairs.

Example of a Game Sequence with a Split on a Pair of Aces

Initial Hand:

Player is dealt two Aces (A♠ A♦).

Dealer's upcard is a 6 (6♣).

Action:

Player decides to split the Aces into two separate hands.

Player places an additional bet equal to the original bet.

New Hands: First hand: A♠

Dealer deals a 7 (7♠) to the first hand.

Player decides to stand with a total of 18.

New Hands: Second hand: A♦

Dealer deals a 9 (9♥) to the second hand.

Player decides to stand with a total of 20.

Dealer's Play: Dealer's hand: 6♣

Dealer reveals the hole card, which is a 10 (10♦), giving the dealer a total of 16.

Dealer must hit and draws a 5 (5♠), making the dealer's total 21.

Result

First hand: 18 loses to the dealer's 21.

Second hand: 20 loses to the dealer's 21.

Can the Dealer Split?

In standard blackjack, only players are allowed to split pairs, while the dealer cannot. The dealer must adhere to fixed rules, usually standing on 17 or higher and hitting on 16 or lower, with no option to split pairs.

Pairs to Always / Never Split

In blackjack, certain pairs are nearly always beneficial to split, as they provide the best opportunity to increase your winnings or reduce your losses. Similarly, there are pairs that should never be split because of the unfavorable odds associated with them.

Pairs to Always Split:

Aces (AA): Splitting aces allows you to create two hands starting with a strong base of 11, which can lead to two hands of 21 with just one more card each. Given the high likelihood of drawing a 10-valued card next, splitting aces is nearly always beneficial.

Eights (88): Splitting eights is essential since a total of 16 is a weak hand, with a significant risk of busting if you hit and a low chance of winning if you stand. By splitting eights, you start two hands with 8, enhancing your chances of improving each hand with subsequent cards.

Pairs to Never Split:

Tens (10-10): Holding a pair of tens totals 20, a very strong hand in blackjack. Splitting tens would dismantle this powerful hand, making it unlikely to achieve two equally strong hands and raising the risk of losing.

Fives (5-5): A pair of fives totals 10, an excellent position for doubling down. Splitting fives would convert a potentially strong hand into two weaker ones, diminishing your chances of winning. In this situation, consider doubling down unless the dealer's face card exceeds 8.

Fours (4-4): A pair of fours totals 8, which is not a strong starting point. However, splitting them usually leads to two weak hands with limited chances of significant improvement. It’s generally wiser to hit and try to raise the total of 8 rather than splitting.

Blackjack Split Chart: When to Split?

This chart, designed for a blackjack game using 4 to 8 decks where the dealer stands on all 17s, summarizes previous explanations and provides insight into when splitting is advisable or should be avoided.

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In addition to hands where splitting is consistently recommended or discouraged, there are situations that require case-by-case evaluation, depending on the dealer's visible card. This chart helps you make the most informed decision.

Advantages and Disadvantages of Splitting

Utilizing splitting in blackjack can be an effective strategy if applied appropriately, but it also has its advantages and disadvantages. Grasping these aspects can assist you in making more informed choices while playing.

Advantages of Splitting:

Increased Winning Potential: Splitting enables you to transform a potentially weak or average hand into two stronger ones. This can greatly enhance your chances of winning more money in a single round, particularly if you split aces or eights.

Enhanced Flexibility: By splitting pairs, you gain the ability to play two separate hands according to the circumstances, potentially doubling your opportunities to defeat the dealer. This is especially beneficial if you receive a pair of 8s, turning a poor total of 16 into two hands starting with 8 each.

Maximized Bets: When you split, you make an additional bet equal to your initial wager, which can lead to higher payouts if both hands succeed. This feature of splitting can be especially profitable in favorable scenarios.

Disadvantages of Splitting:

Increased Risk: Splitting requires you to double your initial wager, raising the amount of money at stake. If the dealer ends up with a strong hand, you could lose twice what you initially bet.

Complex Decision-Making: Knowing when to split can be complicated and necessitates a solid grasp of blackjack strategy. Making an incorrect decision can turn potential gains into losses, particularly if you split in unfavorable situations.

Variable Rules: The rules regarding splitting can differ among casinos, with some permitting re-splits and double downs after splits, while others do not. This inconsistency can influence the overall effectiveness of splitting as a strategy and may restrict your options based on where you play.

Our Opinion on Split in Blackjack

Utilizing the split strategy in your blackjack game can be an effective method to enhance your winning potential, particularly when handling pairs like aces and eights. However, despite the considerable benefits of splitting, it's crucial to recognize its limitations. The heightened risk and the necessity for careful decision-making can render splitting a double-edged sword.

In my view, although splitting can be extremely advantageous, it should be applied carefully and with a thorough grasp of blackjack strategy and the game's specific rules. Relying too heavily on splitting without taking the overall context into account may result in avoidable losses, making it vital to balance this strategy with prudence and experience.

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