Double Down To Advantage In Online Blackjack

April 8, 2017


The most common decision a player has to make in online blackjack is whether to hit or stand. But there are other options available as well. One of them is double down. In order to maximise your average return you can neither ignore this move nor can you use it indiscriminately. This article explains the move and outlines the optimum double down blackjack strategy.

You have to double down immediately after your first two cards are dealt before you hit or stand. Some online blackjack variants allow you to double down after splitting. If you decide to double down, then you will have to place an additional wager equal to the original one. After that you will be dealt one card and only one card.

We now come to the optimum strategy for using the double down move. The strategy given here is for Vegas Strip Blackjack. The double down optimum strategy for other online blackjack variants would be similar. This strategy has been generated through computer simulation of numerous blackjack hands. Double Down optimum strategy depends on three factors – the player’s hand value, whether the player’s dealt hand is a hard total or a soft total and the dealers face up card. A soft total contains an ace that can be valued as either 1 or 11. The hard total is one that is not a soft total.

You should never double down with hard totals of 12 or more. You are doubling your stake and the probability of busting by drawing a 10 value card high enough for you to desist from doubling down. Also, you should never double down with a hard total of 8 or less. You will be dealt only one more card and face a high probability of reaching a total that is weak. When your hand value is 9, 10 or 11 the decision depends on the dealer’s face up card. Double down on a hand value of 10 or 11 unless the dealer is a candidate for blackjack. With a hard total of 9, you should double down unless the dealer’s face up card is two, ace or valued at 7 or more.

With soft totals you can be more aggressive on doubling down when the dealer holds weak hands. Double down on a soft 17 when the dealer’s face up card is a three, four, five or six. Double down on a soft 15 or 16 when the dealer’s face up card is a four, five or six. Double down on a soft 13 or 14 when the dealer’s face up card is a five or six. Do not double down in any other situation.