Double Down on Soft 12

[hwjman]

i have a similar question too. one of the online bj i play here in asia, they allow you to hit or double down after split aces but not re-split them. should i double down when the dealer has 4, 5, 6?

[k_c]

i have a similar question too. one of the online bj i play here in asia, they allow you to hit or double down after split aces but not re-split them. should i double down when the dealer has 4, 5, 6?

When resplitting is not allowed, Double A-A vs 6 (if allowed) if:
(s17) number of decks <= 12
(h17) always
otherwise hit

When resplitting is not allowed, Double A-A vs 5 (if allowed) if:
(s17) decks <= 2
(h17) decks <= 2
otherwise hit

hit A-A vs 4 if resplit is not allowed, do not double

k_c

[Zenfighter]

When resplitting is not allowed, Double A-A vs 6 (if allowed) if:
(s17) number of decks <= 12
(h17) always
otherwise hit

Correct. By example for 6 decks, I got:

s (17)
A, A vs 6

db = 0.190709
hit = 0.187974

h (17)
db = = 0.206312
hit = 0.189536

Here the dealer is somehow penalized for the “greed” of hitting soft seventeen, with the player increasing the expectations of both actions.

When resplitting is not allowed, Double A-A vs 5 (if allowed) if:
(s17) decks <= 2
(h17) decks <= 2
otherwise hit

Agree. Very close but correct.

For 2 decks and s (17):

db =0.170637
hit = 0,169241

hit A-A vs 4 if resplit is not allowed, do not double

Again, for 6 decks and s (17):

db = 0.071156
hit = 0.129004

Here doubling looks but foolish (with BS only).

My two cents.

Zenfighter

[Gronbog]

have a similar question too. one of the online bj i play here in asia, they allow you to hit or double down after split aces but not re-split them. should i double down when the dealer has 4, 5, 6?

You don't state the rules, but for using 6D S17 I get the following indices to double A,A when you can't split:

A,A vs 3: +9
A,A vs 4: +4
A,A vs 5: +1
A,A vs 6: 0

For 6D H17, I get

A,A vs 3: +8
A,A vs 4: +4
A,A vs 5: +1
A,A vs 6: 0

These data were extracted from the sims I ran to generate indices for the upcoming book from Don and I. Too be fair, though, these specific plays are not discussed.

[Midwest Player]

These data were extracted from the sims I ran to generate indices for the upcoming book from Don and I. Too be fair, though, these specific plays are not discussed.

Gronbog and Don, when do you expect your new book to be available? Will there be a kindle version of the book?