21+3 Blackjack Side Bet

21+3 is an exciting and fun blackjack variation that is played as a side bet in a standard game. This side wager comes across as a mix of basic blackjack and three-card poker and promises some attractive odds for the players.

What Is The 21+3 Blackjack Side Bet?

The 21+3 side wager in blackjack is a bet that the player's original two cards combined with the dealer's up card will make a winning poker hand. The three combined cards can lead to:

• a Flush (three cards of the same suit like J♥4♥2♥),
• a Straight (three cards of consecutive values like 3♥4♣5♠),
• a Three of a Kind (three cards of the same denomination like 8♥8♣8♠),
• a Straight Flush (three cards of the same suit and with consecutive values like 8♠9♠T♠), or
• a Suited Three of a Kind (three cards of the same denomination from the same suit like 5♦5♦5♦).

21+3 Blackjack Rules

21+3 blackjack rules are the simple and standard ones. The game is usually played with 6 decks of cards. The dealer stands on all 17s. Players are allowed to double down on 9, 10, and 11 values. When a player doubles down, he receives just one additional card. Also, players are allowed to split up to 2 blackjack hands including the Aces. Doubling down after a split is also allowed. The standard blackjack pays 3:2.

The 21+3 side bet offers different ways to win for the players. Accordingly, this blackjack side bet payout varies depending on the combination the player receives from his two cards and the dealer's up card. A Flush pays 5/1, Straight pays 10/1, Three of a Kind pays 25/1, Straight Flush pays 40/1, and Suited Three of a Kind pays 100/1. As you can tell, these are similar to poker hands in terms of card combinations.

How To Play Blackjack 21+3

The blackjack game starts in the usual way with every player being dealt two cards. The dealer gets one card face up and another, face down. Typically, the blackjack table will have a 21+3 box in which the player can place the stake for this wager. If the first two cards of the players combined with the dealer's up card provide one of the following hands, then the player wins the 21+3 blackjack side bet. If not, he loses the bet amount. The winning amount also varies depending on the hand the player gets. Each hand offers different statistics in the gameplay as delineated below:

Three of a Kind

A player can get Three of a Kind, which implies three cards of the same value or face cards. These cards can belong to the same suit making for a Suited Three of a Kind hand, which pays the maximum that is 100. In a standard game with 6 decks of cards, the probability is 0.000207 with an RTP of 0.020745. When the cards are not from the same suit, a winning hand pays 33 and offers a probability and RTP of 0.005041 and 0.166352 respectively. The odds are quite high at 1:199.

Flush

A Flush is a combination of three cards of the same suit. In a standard 6 deck game, a Flush pays 5 and with a combination of 292896, it guarantees a probability of 0.058424 and RTP of 0.292118. The probability and RTP (with the Flush and the rest of the factors remaining the same) for a game of 8 decks of cards would be 0.058841 and 0.294207 respectively.

Straight

A Straight is a very interesting hand in the 21+3 blackjack side bet. It means that the initial two cards of the player and the dealer's up card are of consecutive values such as 3♣4♦5♠. Such a hand pays 10 and has odds of 10:1 in a blackjack game with 6 decks of cards. The probability and RTP for a Straight are 0.031021 and 0.310214 respectively.

Straight Flush

A Straight Flush hand calls for three cards of consecutive values as well as from the same suit. In a standard game, a Straight Flush pays 30 with an odd of 1:499. The combination, probability, and RTP would be 10.368, 0.002068, and 0.062043 respectively. Because this is the hand that beats nearly everything else in poker, your odds of forming this one are incredibly low.

Odds of 21+3 in Blackjack

The original 21+3 side bet is paid out 9:1 for a winning hand, which results in a house edge of about 3.24%. However, the house edge can vary depending on the blackjack table you are sitting at and the casino you are playing in. Also, the different variations of the 21+3 side bet have house edges ranging from 2.78% to 13.39%.

That being said since the theoretical RTP of this wager is 95.38%, the standard house edge can be considered to be 4.62%. Compared to many other side bets, the house edge of the 21+3 side bet seems to be quite reasonable, especially because the wager gives multiple options for the players to win. Here is an overview of the statistics of the 21+3 hand in a standard blackjack game with 6 decks.

Where To Play 21+3 Blackjack?

The 21+3 side wager is a comparatively newer addition to blackjack. As a result, in spite of being popular and loved by blackjack players, it is not quite widely available in casinos.

Where to play 21+3 online

Online gaming software and casinos have somewhat made this 21+3 side bet popular. Among the most notable ones, there is Wager Works which offers the blackjack. In it, the 21+3 blackjack is played with 6 decks of cards and the standard rules remain the same.

Felt Gaming and Evolution Gaming also have their 21+3 blackjack variation for players. Playtech has recently launched its online blackjack with a 21+3 side bet. The Royal Panda live blackjack is also well-known and is basically an online live dealer blackjack game offering 21+3 side bets.

Where to play 21+3 in land-based casinos

The 21+3 side bet commonly accompanies the European blackjack variation and therefore, it can be found in a few casinos in Europe. In Las Vegas too, you can play the 21+3 blackjack in casinos like Vegas Ace.

21+3 Blackjack - FAQ

Our answers to the most common questions about the 21+3 side bet in the game of blackjack.

The 21+3 side bet is quite interesting and often loved by blackjack players. It is also a popular blackjack side bet because it is widely played in online casinos.