Triple Up 21
Last Update: Sep 07, 2009
Triple Up 21 is a blackjack variant found at a few casinos in Las Vegas. It allows the player to triple up (or "triple down" if you prefer) in some situations. This is at the cost of blackjack paying even money, including blackjack ties.
Contrary to what the rule cards may say, the following are the rules of Triple Up 21. In any game, ask the dealer about the rules if you are not sure.
The following three charts show the basic strategy for one, two, and six decks.
It is not a typo that the player should triple down on a blackjack, against a dealer six, in the six-deck game. Tripling on a blackjack may be allowed in single-deck and double-deck games too, in which cases it should also be done against a dealer six only. It is a very borderline play, reducing the overall house edge by much less than 0.01% when allowed.
The following table shows the house edge according to the number of decks and whether double after a split (DAS) is allowed, assuming the basic strategies above and a cut-card game.
Known locations to have Triple Up 21 are:
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