Learn what 21+3 blackjack is. Discover how the poker-style side bet works, its typical payouts for flushes and straights, and the house edge.
What Is 21+3 Blackjack?
21+3 blackjack is a popular side bet that combines your first two cards with the dealer's upcard to form a poker hand. The main blackjack game proceeds as usual, but you have the option to place an extra wager on this side bet before the cards are dealt. It adds an extra layer of excitement and potential payout based on three-card poker rankings.
The '21' refers to the standard blackjack game, while the '+3' represents the three cards used for the side bet: your two initial cards and the dealer's one face-up card. Winning combinations for the side bet include flushes, straights, three-of-a-kind, and straight flushes. Payouts for these hands are significantly higher than even money.
How the 21+3 Side Bet Works
To participate, you place a separate chip in the designated 21+3 betting area on the layout before any cards are dealt. After receiving your two cards and seeing the dealer's upcard, these three cards are evaluated as a poker hand. The outcome of the side bet is determined independently of whether you win, lose, or push on your main blackjack hand.
If your three cards form a qualifying poker hand, you win the side bet according to a fixed paytable. If they do not, you lose the side bet wager. The main blackjack hand is then played out completely, following all the standard rules of hit, stand, double, and split.
Common Payouts and Winning Hands
The paytable for 21+3 can vary between casinos and software providers, but a typical structure offers escalating payouts for stronger poker hands. A flush, where all three cards are the same suit, is the most common winning hand. A straight, where the cards are in consecutive order, pays more. The top payout is usually reserved for a suited three-of-a-kind.
It's crucial to check the specific paytable before playing, as the house edge on this bet changes with the payouts. Some versions offer a bonus for a suited three-card straight flush, which is the rarest and highest-paying combination. Always remember that the side bet has a significantly higher house edge than the main blackjack game.
- Flush (3 cards same suit): 5 to 1
- Straight (3 cards in sequence): 10 to 1
- Three of a Kind: 30 to 1
- Straight Flush (suited sequence): 40 to 1
- Suited Three of a Kind: 100 to 1
Strategy and House Edge Considerations
The 21+3 side bet is purely a game of chance, as you cannot influence which three cards are dealt. There is no strategic decision involved; you either win or lose based on the random deal. For this reason, it is generally considered a high-variance, high-house-edge proposition compared to the main game.
While it can be entertaining and lead to large payouts, it should be treated as a form of entertainment rather than a reliable way to make money. Savvy players often limit their side bet wagers to a small fraction of their main bet or avoid it altogether to focus on the strategically sound main blackjack game where skill can reduce the house edge.
Frequently Asked Questions
Does the 21+3 bet affect my main blackjack hand?
No, it does not. The 21+3 side bet is resolved immediately after the initial deal, before you play your main hand. Winning or losing the side bet has no impact on your decisions or the outcome of the standard blackjack game against the dealer.
What is the house edge on the 21+3 side bet?
The house edge varies with the specific paytable, but it is typically much higher than the edge on the main blackjack game, often ranging from 3% to over 7%. This means the casino has a greater statistical advantage on this side bet over the long run.
Can you win both the side bet and the main hand?
Yes, absolutely. They are independent wagers. It is possible to have a winning poker hand for the 21+3 bet and also win your main blackjack hand against the dealer. In this case, you collect payouts for both bets.
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