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#1
07-24-2007, 04:14 AM
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a few blackjack strategy questions
I've got a few cheat sheets from the web and noticed a few things that go against my intuition (I know intuition can ruin a gambler, that is why I got the cheat sheets).
*Why is it right to only hit on 4,4 with dealer 2,3,4? No split? *why is it right to only hit A,5 dealer 2 or 3? No Double? *Why not double with A,6 showing 2? This should be profitable. *Splitting 9,9 on anything with dealer 9 and down EXCEPT dealer's 7, why? *Why hit at all with 12 on dealers 2 or 3? Is standing better? 
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#2
07-24-2007, 04:49 AM
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Re: a few blackjack strategy questions
Looks like you are referring to BJ Basic Strategy where there is a definite action for each possible combination of player/dealer cards.
Quite simply the actions, through repeated mathematical simulations, are the ultimately most profitable ones although it may be a very close call.
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#3
07-24-2007, 06:31 AM
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Re: a few blackjack strategy questions
Last time I got the 9,9 and dealers 7. Instictly I somehow didnt split and just checked. I was actually pretty surprised afterwards when I checked the sheet that this hand was the only one where you shouldnt split. I've just glanced at the sheet a couple of month back so I might had it in my subconsious. Anyway, just wanted to brag and say that this doesnt really make sense to me to...
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#4
07-24-2007, 07:01 AM
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Re: a few blackjack strategy questions
basic strategy has already been tested over computer simulations of billions of hands. you win more and/or lose less when you follow the "cheat sheet", simple as that.
if you really want to know the "why" mathematically, you can find EV chart breakdowns in books like "Professional Blackjack" by Stamford Wong, or "Blackjack Attack" by Don Schlesinger.
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#5
07-24-2007, 10:50 AM
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Re: a few blackjack strategy questions
[ QUOTE ]
I've got a few cheat sheets from the web and noticed a few things that go against my intuition (I know intuition can ruin a gambler, that is why I got the cheat sheets). *Why is it right to only hit on 4,4 with dealer 2,3,4? No split? *why is it right to only hit A,5 dealer 2 or 3? No Double? *Why not double with A,6 showing 2? This should be profitable. *Why hit at all with 12 on dealers 2 or 3? Is standing better? [/ QUOTE ] Very generally, the dealer is less likely to bust when holding a 2 or 3 than when holding a 5 or 6. Thus, you need to take actions than are both riskier in terms of busting yourself, and less expensive in terms of your investment when the dealer holds a 2 or 3. So you will be more likely to hit, and less likely to double or split, in these circumstances. [ QUOTE ] *Splitting 9,9 on anything with dealer 9 and down EXCEPT dealer's 7, why? [/ QUOTE ] If the dealer has a 7, he is is more likely to get a 17 than with any other up-card. Since a dealer 17 is a guaranteed win for you with 9-9, splitting only risks busting with one or both hands. However, against another low dealer up-card, 18 really isn't a very good hand, and you want to split the 9's in hopes of hitting a 19 or 20 on one or both hands. Against a dealer 10, hitting to a 19 is less likely to win the hand for you, so you don't want to increase your investment in the hand if you don't have to...this is a likely loser no matter what you do.
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#6
07-24-2007, 11:03 AM
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Re: a few blackjack strategy questions
The decisions in the Basic Strategy are determined by calculating your expectation for all possible options. Generally speaking, you calculate your expectation by hitting and subtract your expectation by standing. if the abstract of the two is positive, you should hit -- If it is negative, you should stand. You can do this with all of your double/split options factoring the differences in the wager to determine the best action. Obviously -- the individual plays in the resulting strategy are not necessarily +EV, they're just better than your next best option.
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#8
07-26-2007, 01:08 AM
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Re: a few blackjack strategy questions
[ QUOTE ]
[ QUOTE ] *Splitting 9,9 on anything with dealer 9 and down EXCEPT dealer's 7, why? [/ QUOTE ] If the dealer has a 7, he is is more likely to get a 17 than with any other up-card. Since a dealer 17 is a guaranteed win for you with 9-9, splitting only risks busting with one or both hands. However, against another low dealer up-card, 18 really isn't a very good hand, and you want to split the 9's in hopes of hitting a 19 or 20 on one or both hands. Against a dealer 10, hitting to a 19 is less likely to win the hand for you, so you don't want to increase your investment in the hand if you don't have to...this is a likely loser no matter what you do. [/ QUOTE ] Very good points. My cheat sheet actually suggests splitting! 99 vs dealers 9, 10! This seems like 'spewing.' Wouldn't standing be better? Chances of dealer winding up with 20 outweight the cost of splitting (doubling my investment) and trying for 19/20 (landing a T or A) which results in either losing or pushing. What do you guys do with 9,9 vs 10 or A?
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#9
07-26-2007, 02:57 AM
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Re: a few blackjack strategy questions
http://www.expertinsight.com/_Blackjack.html
Go towards the bottom and look at his basic strategy chart if you have any questions, his chart is 100% mathematically correct and has been tested a zillion times. On that note you may actually be interested in that video, I own it and thought it was pretty good.
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