Strategy changes when you can double down, with an option to do it again.

I found a standard blackjack game where it’s possible to double, get a card, and then double again. Therefore the double does not close the action (you may double again, but not hit)

For example, 9 vs 6. Double down and get a 2. You can now add a third bet for another card.

This no doubt makes some additional doubles viable that are not part of the chart. Would anyone have any idea what the correct deviations would be under these rules? I’m unable to find anything matching online.


Well-Known Member
Wong's Basic Blackjack, Table 10, pages 58-59 has the correct BS. Extra doubles are:
8 (including 4-4) vs. 4-6; 9 vs. 2 and 7; and A-2 and A,3 vs. 4.



Well-Known Member
For the second double, because you can only double or stand:
  1. The hands you re-double on are not the same as for the original double.
  2. For some hands, you want to re-double for as little as possible and you do not double at all if you can not do so below the critical fraction of the total amount already bet.
For #2 above, this strategy for doubling or standing after splitting aces at Kewadin is appropriate for any situation in which you can only double or stand in a shoe game:

As mentioned above, when the strategy calls for "double for less" you should double for as little as possible. See the notes included after the strategy charts.