What Does Su Mean in Blackjack?

In blackjack, the term “su” refers to the value of the dealer’s upcard. The dealer’s upcard is the card that is face up on the table in front of the dealer.

The value of the dealer’s upcard dictates how much the player must bet in order to have a chance to win the hand.

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PRO TIP:In Blackjack, ‘Su’ stands for the card suit (e.g. Spades, Hearts, Diamonds, Clubs). It is used to differentiate between the cards when multiple players have the same rank (e.g. two players both have a King of Spades and King of Clubs).

If the dealer’s upcard is an Ace, the player must bet at least 11 units in order to have a chance to win the hand. If the dealer’s upcard is a Two, Three, Four, Five, or Six, the player must bet at least 9 units in order to have a chance to win the hand.

If the dealer’s upcard is a Seven, Eight, or Nine, the player must bet at least 7 units in order to have a chance to win the hand.

The term “su” can also be used to refer to any hand that has a value of 21 or less. For example, if a player has a hand with a value of 19 and the dealer has an upcard with a value of Ace, Four, or Five, the player can say “I’ve got su” meaning that they have a hand that cannot bust (go over 21) no matter what card they are dealt next.