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Exploring the Excitement of
21+3 in Blackjack

The 21+3 in blackjack refers to a popular side bet that can be placed alongside your main bet in the game. It combines elements of blackjack and three-card poker, offering attractive odds for certain combinations of cards.


Here's how the 21+3 side bet works:

You place the 21+3 side bet in addition to your regular blackjack wager.

The side bet is based on the combination of your first two cards and the dealer's face-up card.

The goal is to form one of the following three-card poker hands:


  • Flush: Three cards of the same suit.
  • Straight: Three cards of consecutive values (e.g., 2-3-4). Aces can be high or low.
  • Three of a Kind: Three cards of the same value or face card.
  • Straight Flush: Three cards of consecutive values that are all in the same suit.
  • Suited Three of a Kind: Three cards of the same value and suit.

The payout for winning hands varies depending on the specific casino and table you're playing at. For example, a straight flush might pay 180 to 1, while three of a kind suited could pay 270 to 1.


It's important to note that the house edge for the 21+3 side bet can vary depending on the table rules and the casino. The range of house edges for this side bet can be anywhere from 2.78% to 13.39% . Therefore, it's advisable to understand the specific rules and payouts of the 21+3 side bet before placing it.

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Odds of Blackjack 21+3 Side Bet

The odds of the 21+3 side bet in blackjack can vary depending on the specific casino and table rules. The payout odds for winning hands also differ based on the combination achieved. Here are some insights from the search results:

The house advantage on the 21+3 side bet can change significantly depending on the number of decks in play. For example, the house advantage on the top three bet can be approximately 9%.

The odds and payouts for the 21+3 side bet can vary. For instance, a straight flush might pay 180 to 1, while three of a kind suited could pay 270 to 1.

The probability of landing specific hands and the associated odds can differ based on the number of decks used and the specific game variation. For example, the odds of landing a flush can be around 0.058424 with a payout of 5 to 1.

It's important to note that the house edge for the 21+3 side bet can be relatively high, ranging from 2.78% to 13.39% depending on the specific table rules and casino.

Remember, these odds and payouts are general guidelines and can vary depending on the specific casino and table you're playing at. It's always advisable to understand the rules and payouts of the 21+3 side bet at the particular table you're playing on.


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Here are some additional details about this side bet:

  • How it Works: In the 21+3 side bet, you wager on whether the first two cards of your hand, along with the dealer's face-up card, combine to form one of the following three-card poker hands: flush, straight, three of a kind, straight flush, or suited three of a kind.
  • Placement of the Bet: The 21+3 side bet is placed alongside your main blackjack wager. It is typically located in a designated area on the table.
  • Payouts: The payout odds for winning hands in the 21+3 side bet can vary depending on the specific casino and table rules. For example, a straight flush might pay 180 to 1, while three of a kind suited could pay 270 to 1. It's important to check the specific payouts offered by the casino where you're playing.
  • House Edge: The house edge for the 21+3 side bet can vary depending on the number of decks used and the specific table rules. The range of house edges for this side bet can be anywhere from 2.78% to 13.39%. It's advisable to understand the specific rules and payouts of the 21+3 side bet at the particular table you're playing on.
  • Availability: The 21+3 side bet can be found in both land-based and online casinos. It has gained popularity over the years and is offered in various blackjack variations by different casino operators.