Double Attack Blackjack
Last Update: May 04, 2010
Double Attack Blackjack is a blackjack variant with lots of rule twists. The most interesting is that the player may double his bet after the dealer’s up card is dealt, before any player cards are. The game is popular in Atlantic City, where it can be found in about half the casinos. As of May, 2010, it was at the El Cortez in Las Vegas.
Following is the basic strategy for Double Attack Blackjack. "Double Down Surrender" refers to when to surrender after doubling down.
The next table shows the expected value against each dealer up card. Correct strategy is to raise with an expected value greater than zero. The table shows the player should raise if the dealer’s up card is a 2 to 8.
The lower right cell of the table above shows the house edge is 0.62%.
The player will raise 58.3% of the time. Additional money will also be bet doubling and splitting. The ratio of expected player loss to total money bet, the Element of Risk, is 0.35%.
The following return table is for insurance. The lower right cell shows a house edge of 12.27%.
BustIt Side Bet
The following table shows the probability and return for all possible outcomes of the BustIt side bet. The lower right cell shows a house edge of 8.01%.
A combinatorial program was used to determine total-dependent basic strategy. Then, this strategy was run through a random simulation in an eight-deck game, with cut card. This will result in a slightly higher house edge than a composition-dependent analysis, based on the first hand in the shoe, which is how blackjack is often analyzed, but in my opinion does not represent realistic playing conditions.
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