In the 21+3 blackjack side bet, a Straight Flush is a specific combination of the player's first two cards and the dealer's upcard that are all of the same suit and in consecutive rank order.
21+3 is a side bet option in some versions of Blackjack that allows players to place a wager on the combination of their two hole cards plus the dealer's up card. If the combination of these three cards forms a straight flush, the player wins a bonus payout.
To get a straight flush in Blackjack, the three cards must not only be the same suit but also consecutive numbers. It's a tricky bet to land, but if you manage it, a payout of up to 40 to 1 could be yours to win. This side bet is typically offered in addition to the main Blackjack game, and is based on the rules of standard poker hand rankings.
The payout for a straight flush can vary depending on the casino and the specific rules of the game, but it is generally quite high. For example, a payout of 30 to 1 or 40 to 1 is not uncommon. Some casinos may also offer lower payouts for a straight flush, such as 10 to 1 or 20 to 1.
For example, if the player is dealt an 8 of hearts and a 9 of hearts, and the dealer's upcard is a 10 of hearts, it would be considered a straight flush. It's a relatively rare and high-paying outcome in the 21+3 side bet, with the payout varying depending on the specific casino or Blackjack game.
The winning of this side bet doesn't affect the outcome of the standard blackjack hand but rather is paid to the player as a bonus. It's important to note that this variation of the game is less common than the traditional version and not all casinos offer this kind of side bet.
The odds of hitting a straight flush in the 21+3 side bet can vary depending on the specific rules of the game and the number of decks being used. However in general, the odds of hitting a straight flush side bet is quite low because it needs 3 cards to form a straight flush. In order to hit a straight flush, the player needs to have the first two cards of the same suit, and the dealer's upcard also of the same suit as the first two, and all three cards should be in consecutive order as well, which is quite a rare combination.
It's also important to note that the odds for the side bets like 21+3, perfect pairs and others are established by the casinos and can vary from one to another. So, it's advisable to check with the specific casino or the table rules to know the exact odds of hitting a straight flush in the Blackjack game that you're playing.
To truly grasp the concept of Blackjack side bets, there's no substitute for hands-on experience. By trying them for yourself, you'll quickly learn which side bets offer the best odds and payout potential.
Other popular side bets in the 21+3 include a flush, straight, three of a kind and suited three of a kind. Only the latter pays out a bigger prize than a straight flush, so it’s an excellent bet to try land.
David Winter is our in-house casino aficionado with over 10-years experience in the industry. Having written for several major casino groups in the UK and Europe, we are proud to have snagged him for ourselves. He’s been with us for six years now and writes about all our upcoming slots and our casino strategy guides.