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Old September 12th, 2007, 10:18 AM
SilentBob420BMFJ SilentBob420BMFJ is offline
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Default Where can I find a double down for less strategy?

im looking for a strategy for doubling for less, or perhaps some tables on hit/stand/split/double would help me? im not sure.. if your thinking, "it is bad to double for less", then read this..

this excerpt is from an article on scavenger play http://www.blackjackforumonline.com/...vengerbjfo.pdf
Traditional
basic strategy has an articial dichotomy|full doubling or not at all|that must be dismissed.
Our generalized approach to basic strategy will answer a dierent question: At what additional
wager amount will doubling produce the same expectation as not doubling? For instance, instead of
saying, \Basic strategy is to double A2 v. 5 (6-deck S17)," we will now say, \The critical doubling
fraction for A2 v. 5 (6-deck S17) is 0.964." This means that if we double for 96.4% of our original bet,
doubling will produce the same expectation as hitting. If we double for more than this fraction|
for instance, doubling for the full amount|then doubling is the expectation-maximizing play, over
hitting

the doubles in basic strategy, yes you double for the full, but there are times when doubling for less are better than hitting or doubling for full, probably with such hands as A2 vs 4 or something next to another double on the bs chart

Last edited by SilentBob420BMFJ; September 12th, 2007 at 10:21 AM.
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Old September 12th, 2007, 10:25 AM
SilentBob420BMFJ SilentBob420BMFJ is offline
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Default nvm

note to self: read the entire article before you have a question

sentences later after i posted the above, it said this..

The tables following report the critical fractions, in thousandths, for doubling down. Since these
"indices" advise the expectation-maximizer to double for the specified amount or more, we rounded
the fractions up to the nearest thousandth. So, doubling for exactly the amount shown will produce
a slightly higher expectation than the alternative play.

the end of the article has lengthy tables on this
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Old September 12th, 2007, 11:34 AM
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Sonny Sonny is online now
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Quote:
Originally Posted by SilentBob420BMFJ View Post
note to self: read the entire article before you have a question
Good lesson. I often read through an article several times before posting about it. Sometimes I find the answers I’m looking for, and other times I find more questions to ask. Either way it always helps to be familiar with the article first.

-Sonny-
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Old September 12th, 2007, 12:35 PM
SilentBob420BMFJ SilentBob420BMFJ is offline
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i think i made a mistake with that article, i understood what they were saying, but assumed it would work with doubling for less on your own hand, but i dont think it does.. if anybody is down for reading that article and giving me your thoughts on it that would be great.. basically my question is, is there a situation where for doubling for less (a defined %) is more advantageous than hitting or doubling for full? this is on your own hand, not a scavenger move
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Old September 12th, 2007, 10:58 PM
Kasi Kasi is offline
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Quote:
Originally Posted by SilentBob420BMFJ View Post
basically my question is, is there a situation where for doubling for less (a defined %) is more advantageous than hitting or doubling for full? this is on your own hand, not a scavenger move
Not that I know of.

Although sometimes it is proper to double even though you will win less than 50% of the hands.
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Old September 14th, 2007, 01:52 PM
Cardcounter Cardcounter is offline
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Cool Doubling for less

It is never the correct stragedy if by just hitting you can take more hits to your hand. Doubling for less is always the wrong play in cash games. If splitting and doubling cause you to run out of chips in one hand you are playing above your means and will always lose. NEVER play beyond your bankroll. However doubling for less can be a good or a correct play in tournament blackjack where you are competting against other players.
Cameo plays might have some people doubling for less lets say you have a 13 and the dealer shows a 2 as a cameo play you put $1 out there and double for less to show the pit boss you are an idiot. You won't want another hit anyway and you will win less than 50% so you don't double for the full amount. Every basic stragedy double down wins more than 50% of the time for them to be correct, but they also have to produce a greater profit than just hitting. Lets take a 9 against a 7 if you double down you will win 53% of the time if you hit retaining your right to rehit a 9 against a 7 you will win 59% of the time. Lets look at the profit on a $100 bet hitting produces a profit of $18 doubling a profit of $12 on $200 risked. The $18 profit is greatest and there for is the prefered play.
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Old September 14th, 2007, 01:55 PM
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Quote:
Originally Posted by SilentBob420BMFJ View Post
. basically my question is, is there a situation where for doubling for less (a defined %) is more advantageous than hitting or doubling for full? this is on your own hand, not a scavenger move
No.
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Old September 14th, 2007, 01:59 PM
shadroch shadroch is offline
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None that I can think of,in a cash game.
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Old September 14th, 2007, 09:55 PM
Brock Windsor Brock Windsor is offline
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Default Double for less

I believe some North Michighan casinos allow doubling on split aces, but not hitting them. This is when doubling for less has value. I think Wong has done the math on it in one of his books.
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Old September 14th, 2007, 10:01 PM
shadroch shadroch is offline
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Quote:
Originally Posted by Brock Windsor View Post
I believe some North Michighan casinos allow doubling on split aces, but not hitting them. This is when doubling for less has value. I think Wong has done the math on it in one of his books.

I'm not following you. Please explain what doubling on split aces means?Lets assume I have a $30 bet out and draw a pair of Aces.Walk me thru the next move.
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