This morning I talked about a house rule to work into your blackjack strategy in which the house rule actually favors the player. Well, there is another one. This particular house rules allows players to double down after they have they have split a pair.
The step by step breakdown of how this house rule works goes like this:
First you have to be dealt a pair. You then choose to split that pair and up your wager accordingly. Let’s say that you split a pair of 8s—which you are supposed to be splitting no matter what. Once those two 8s have been broken into new hands they then receive new second cards. We are going to say that one of those 8s receives a 2, making it a hard 10 against a dealer’s 6.
According to basic strategy you would double down on a hard 10 against a dealer’s 6. Normally you would not be allowed to double down after splitting a pair. But if you are playing in a blackjack game that does allow for doubling after splitting this would be the time to do so.
Doubling after splitting at advantageous times can lower the house edge by 0.14%, which is a nice hit to their edge. This is because doubling after splitting allows you to win more money from the house than you would if you were not allowed to double after splitting. But you have to do so only when it is advantageous.
How do you know if it is advantageous to double after splitting?
It is surprisingly easy. After splitting and receiving your new second cards for each of your new hands, check those new hands against a basic strategy chart as if each hand were the first two cards you had been dealt at the beginning of the round.
Using the above example, when I wound up with a hard 10 after splitting, I would check how to play a hard 10 against a dealer’s up card of 6 just as if I had been dealt that hard 10 from the beginning of the round.
Because of the 0.14% hit to the house’s edge, doubling after splitting is a good play to add to your blackjack strategy.