DD 10 vs dealer 9?

[Preston]

Can someone do the numbers on this one?

Basic Strategy says to DD on 10 vs dealer 9. I've always struggled with this one. Any thoughts?

[Sonny]

Stand: -.544
Hit: 0.1166
Double: 0.15

You can get more accurate numbers for a specific set of rules or hand composition here:

http://www.bjmath.com/bjmath/ev/ev.htm

-Sonny-

[FGK42]

Originally Posted by Sonny

Stand: -.544
Hit: 0.1166
Double: 0.15

You can get more accurate numbers for a specific set of rules or hand composition here:

-Sonny-

Thanks for the link Sonny

Out of curosity, do you know HOW to calculate the EV? Do you have any links about how the EV is calculated/programed?

I mean it's nice to just flip a switch and get electricity but every once in awhile don't you just wonder HOW the juice gets to the source

[21forme]

The one that get's me is 11 vs. whatever. I pull more aces on 11's than I care to think about.

[Automatic Monkey]

Originally Posted by 21forme

The one that get's me is 11 vs. whatever. I pull more aces on 11's than I care to think about.

Amazing, isn't it? Hard to believe it's only selective memory. My personal theory is this way that we remember losing more than winning protects us from having gambling problems. Compulsive gamblers tend to block out the losses and remember winning.

DD 10 vs. 9 is also a worthwhile index play for reducing variance. Don't do it if your TC is less than -1 in High-Low or other balanced level 1 systems.

[EasyRhino]

Originally Posted by 21forme

The one that get's me is 11 vs. whatever. I pull more aces on 11's than I care to think about.

yeah, especially in high counts. However, doubling an eleven also gets you a drawn ten a ridiculously high percentage of the time, which is sooo worth it.

[ChefJJ]

It does SEEM like more aces come when you double on 11, but it's like the ol' "7's gonna come when the dice go off the table" deal in craps. It's all about perception/remembering what you want (or what you wish to forget)!

Calculating the EV is one of those things that you wont get much help on from most people...it is not the easiest things in the world. I did a whole Excel spreadsheet to come up with EVs. Granted it is based on an infinite deck, but I have come up with some interesting situations that slightly vary from BS...haven't tested them, but they are a bit aggressive.

Good luck

[MGP]

Calculating EV's is not difficult (except splits maybe). All you do is go through all the possible dealer hands given the cards that have been drawn from the deck and multiply the resulting EV (win/lose/push) by the probability of the hand happening.

The easiest way to see the details is to look at Eric Farmer's program here:

http://www.bjmath.com/bjcomputer/computer/gamegen.htm

[FGK42]

Originally Posted by MGP

Calculating EV's is not difficult (except splits maybe). All you do is go through all the possible dealer hands given the cards that have been drawn from the deck and multiply the resulting EV (win/lose/push) by the probability of the hand happening.

The easiest way to see the details is to look at Eric Farmer's program here:

http://www.bjmath.com/bjcomputer/computer/gamegen.htm

Just what the Dr. ordered MGP - thanks! :D

[shadroch]

Originally Posted by EasyRhino

yeah, especially in high counts. However, doubling an eleven also gets you a drawn ten a ridiculously high percentage of the time, which is sooo worth it.

But only when you have a minimum bet out.It certainly seems that the higher the bet,the less frequently the ten pops up.