SilentBob420BMFJ
Joined: May 8, 2011
• Posts: 104
May 13th, 2011 at 1:46:56 PM permalink
I'm curious if anything other than the basic strategy below is needed to squeeze everything out of this promo game at 5Dimes:

Each hand is dealt out of a new 8 deck shoe
Blackjack pays 2:1
Dealer hits soft 17
No doubling
Split once

http://www.blackjackinfo.com/bjbse.php?numdecks=8+decks&soft17=h17&dbl=all&das=no&surr=ns&peek=yes

Obviously you'd hit where it says double.

The Wizard says this game has a .04% house edge. However, since it's so close to being positive, I think an exact calculation using every single parameter would be needed to know exactly what it is within .01%. Remember, the effect on the house edge on that rules chart of his is based on a different game than this one; saying that rule y is worth x% across all games is false. The Wizard is busy though I'm sure, so he won't do a custom calculation just for this game, but I'm curious.
MangoJ
Joined: Mar 12, 2011
• Posts: 905
May 13th, 2011 at 1:58:48 PM permalink
You should find a calculator of house edge for those rules with normal 3:2 payout.
Then add the effect of the 2:1 bonus by calculating the probability of hitting a BJ (and dealer has no BJ), and consider the 0.5 bet bonus.
SilentBob420BMFJ
Joined: May 8, 2011
• Posts: 104
May 14th, 2011 at 12:46:22 AM permalink
Quote: MangoJ

You should find a calculator of house edge for those rules with normal 3:2 payout.
Then add the effect of the 2:1 bonus by calculating the probability of hitting a BJ (and dealer has no BJ), and consider the 0.5 bet bonus.

Firstly, you forgot that no calculator has "no double downs", which Wizard says was worth quite a bit. Secondly, all of these house edge calculators are based on a base set of rules. I'm not sure how it all works exactly, but most rules, if not all, are worth more or less depending on the game's rules I think. With these calculators and Wizard's chart, it's all static, so even if it's within .02 or so for each rule for the most part, added up it could be close to .10 off if the game is unique enough. Somebody correct me if I'm wrong. And yes I am splitting hairs, that's the idea.
MangoJ
Joined: Mar 12, 2011
• Posts: 905
May 14th, 2011 at 1:43:29 AM permalink
Thats why you should use a calculator on THESE rules, not just ANY rules.

It's more likely to find a calculator without doubling, than to find a calculator with 2:1 payout.
weaselman
Joined: Jul 11, 2010
• Posts: 2349
May 14th, 2011 at 8:27:53 AM permalink
It's ~0.04% (I am getting 0.032% with infinite decks) PLAYER edge, not house edge.
The strategy is the same as the regular basic strategy with no DAS, hitting everywhere where it says "double", except standting on soft 18 that you'd otherwise double (still hit 9,10,A, obiously), and always stand on soft 19.
"When two people always agree one of them is unnecessary"
SilentBob420BMFJ
Joined: May 8, 2011
• Posts: 104
May 15th, 2011 at 1:31:14 AM permalink
Quote: weaselman

It's ~0.04% (I am getting 0.032% with infinite decks) PLAYER edge, not house edge.
The strategy is the same as the regular basic strategy with no DAS, hitting everywhere where it says "double", except standting on soft 18 that you'd otherwise double (still hit 9,10,A, obiously), and always stand on soft 19.

Did you use CVData? Because I got +.033% with 8 decks, reshuffling after it gets down to 405 cards left in the shoe (wouldn't let me choose only 1 hand played per shoe). That .001% is probably the difference between using infinite decks and then playing only 1 hand per shoe with 8 decks.
weaselman
Joined: Jul 11, 2010
• Posts: 2349
May 15th, 2011 at 7:31:01 AM permalink
Quote: SilentBob420BMFJ

Did you use CVData?

No, I calculate it myself.

Quote:

Because I got +.033% with 8 decks, reshuffling after it gets down to 405 cards left in the shoe (wouldn't let me choose only 1 hand played per shoe). That .001% is probably the difference between using infinite decks and then playing only 1 hand per shoe with 8 decks.

I am not sure what method your program is using. If it is a simulation, then the number is obviously inexact. If it calculates the result analytically, then it is, probably the result of a rounding error (both in my calculation and in yours).
"When two people always agree one of them is unnecessary"
SilentBob420BMFJ
Joined: May 8, 2011
• Posts: 104
May 20th, 2011 at 1:00:12 PM permalink
Quote: weaselman

No, I calculate it myself.

I am not sure what method your program is using. If it is a simulation, then the number is obviously inexact. If it calculates the result analytically, then it is, probably the result of a rounding error (both in my calculation and in yours).

Either way, this game is positive, which is exactly why I made this thread, instead of just finding some generic "no doubling is worth -x%" rule. And yes it is a simulator, but with 250,000,000 hands, I think we can assume it's going to extremely accurate. Rounding would be far more of a factor.
chief42
Joined: May 25, 2011
• Posts: 7
May 25th, 2011 at 4:50:39 PM permalink
Hey Bob,

Is that blackjack game only available on saturday's? I looked around dimes and couldn't find it. I did however find a 4 deck blackjack with 2:1 on black jack, no double, no split, dealer stands on soft 17, and late surrender. It is very similiar to yours, except i believe you can split once with yours and dealer hits soft 17. If you could let me know about your game, and what you think of mine that would be great. I know dimes is offering the lowest edge on casino games compared to most if not all online sites, I am just trying to find the best game I can play on their site. Any help from anyone would be much appreciated.
SilentBob420BMFJ
Joined: May 8, 2011