Redouble-Strategy,Advantage?

#1
Hi all,

i found something new? in one of the local casinos here:

6D,ENHC,S17,DAS,Dany2,Surrender,REDOUBLE

redouble means that you can double for the initial bet a second time

example:

initial bet $100
,you double 9 vs x by betting another $100,
you get dealt a 2,you double again by betting $100 and you get dealt one more card.
total wager $ 300,payout $300

As i can`t find this variation in the net,i wonder what it is worth (basic)?

And is my "homemade" doubling strategy (basic) correct?

7 vs 6
8 vs 3-6
9 vs 2-7
T vs 2-9
11vs 2-9

A2 vs 2-7
A3 vs 2-6
A4 vs 3-6
A5 vs 3-6
A6 vs 3-6
A7 vs 2-6

4,4 noo split,instead double vs 3-6

as always,thanks in advance for helping

Mike
 

moo321

Well-Known Member
#2
Hmm, you should always be doubling 11 vs. 10 and Ace.

Anyways, I know it's worth about .4% in spanish, so it's probably something comparable in blackjack. However, the spanish re-doubling is actually a quadrupling, so that may affect things...

As far as a stategy, I have no idea. I would imagine more soft doubles, probably doubling 8 vs. 2-6, etc. I don't want to give any recommendations without knowing the right answers.
 
#3
moo321 said:
Hmm, you should always be doubling 11 vs. 10 and Ace.

Anyways, I know it's worth about .4% in spanish, so it's probably something comparable in blackjack. However, the spanish re-doubling is actually a quadrupling, so that may affect things...

As far as a stategy, I have no idea. I would imagine more soft doubles, probably doubling 8 vs. 2-6, etc. I don't want to give any recommendations without knowing the right answers.
No Peek=no doubling vs T,A
 
#6
response

j.a.o.p. said:
Hi all,

i found something new? in one of the local casinos here:

6D,ENHC,S17,DAS,Dany2,Surrender,REDOUBLE

redouble means that you can double for the initial bet a second time

example:

initial bet $100
,you double 9 vs x by betting another $100,
you get dealt a 2,you double again by betting $100 and you get dealt one more card.
total wager $ 300,payout $300

As i can`t find this variation in the net,i wonder what it is worth (basic)?

And is my "homemade" doubling strategy (basic) correct?

7 vs 6
8 vs 3-6
9 vs 2-7
T vs 2-9
11vs 2-9

A2 vs 2-7
A3 vs 2-6
A4 vs 3-6
A5 vs 3-6
A6 vs 3-6
A7 vs 2-6

4,4 noo split,instead double vs 3-6

as always,thanks in advance for helping

Mike
Your strategy is completely off. See Kat's book.
 
#8
ur homemade stgy is almost no error.
only i wonder if u DD A2 vs7?
one thing 2 remind if u get point 12 vs 7 after DD, u should re-double at
12 vs 7, even 12 vs 8.
besides, a Qn a bit odd, the rule allow u to re-double to take a new card to replace the card u hit at 1st time Double?
e.g. double to hit 3, remove it n replaced by a new card.
i heard this special rule b4, but never met it.
 

farmdoggy

Well-Known Member
#9
I think you can also add 6vs6 and 5vs6 to your doubles (also in SP21 strategy). Possibly even 7vs5? (not in SP21 strategy, but the dealer has a better chance of busting in your game)

What country is this game in??? I wanna play! I feel that there would also be alot more instances where you would double (redouble, that is) on 12 or possibly even 13 since you are not risking as much $ in taking an extra card as you would be in SP21.

Sadly, there probably isn't any research done on this one-of a-kind game.
 
#10
jnrwilliam said:
ur homemade stgy is almost no error.
only i wonder if u DD A2 vs7?
one thing 2 remind if u get point 12 vs 7 after DD, u should re-double at
12 vs 7, even 12 vs 8.
besides, a Qn a bit odd, the rule allow u to re-double to take a new card to replace the card u hit at 1st time Double?
e.g. double to hit 3, remove it n replaced by a new card.
i heard this special rule b4, but never met it.

sorry, i open the wrong door.
i misunderstood it is BJ.
i have no idea at SP21 at all.
 

blackriver

Well-Known Member
#11
redoubling solved yet?

im faced with a game that allows this. have we still not solved this? i think we should be doubling more than in spanish 21 since the dealer will bust more, etc
 

FLASH1296

Well-Known Member
#12

You need to explain a lot more than you have.

I assume that you referring to Blackjack ~ and not ~ [6 deck H17] Spanish21,

where the redouble-rule is accompanied by "double-down rescue" ?

The redouble rule, (without "rescue"/surrender) is a nice option to have but is not as valuable if you are bound to it.

The only changes to Basic Strategy is that you will be doubling
Soft hands, 9's and 8's more often than without re-double.
For the most part, you will need to adjust your indices for borderline decisions.
 

Sucker

Well-Known Member
#13
You would want to double on almost ALL non-stiffs vs a dealers' small card.

Example:
8 deck shoe, S17 -
If you have 3-2 vs. a dealers' 6 upcard, and decide to play BS, you will earn 0.26% of one bet. In other words, for a $100 base bet your expectation is 26 cents.

If you double down on 3-2, with the intention of redoubling; after all is said and done, your expectation will be 13.4% of one bet. For that same $100 base bet you will risk either $200 or $400, but you will have EARNED an average of $13.40.

The main reason it's correct to double on a hand as weak as 3-2, is because although you'll be risking 2 bets when the next card gives you a stiff (8 out of 13 times), the 5 out of 13 times that you GET the redouble card you'll be playing the redouble for FOUR bets!

Please don't ask me for the full strategy for this game, because I DON'T know it, and it already took me an hour just to tweak my simulator enough to get THIS answer. :grin:
 

blackriver

Well-Known Member
#14
the redouble gamei played has your second double being a match of your original bet, not matching you total bet. so your final wage is up to 3x ur original bet, not 4x
 
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