Double down is used when players assume that they only need only another card to win the game. Players can take full advantage of this playing option when they have an Ace in the hand already, and the dealer shows that he has a six-value card. If you have a soft 20, you should not make use of this option. Similarly, in case the dealer’s hand has a five, you should use this option as much as possible unless you have a soft 19 or 20.
