What is the house edge in this game?

[phantom]

I noticed a blackjack game at a casino in Tunica a couple of weeks ago. I think they called it "Single" blackjack.

The player could double down at any time even after more than 2 cards, surrender, double after split and automatically won with 6 cards.

The only thing they took away from the player was that blackjack only paid even money unless it was suited. Does this take away enough from the player to more than make up for the favorable rules?

 

[Mewtwo]

Blackjacks pay 1 to 1: -2.27
From what you mentioned, they only pay normallly (3 to 2) if suited; there's a 1/4 chance of them being suited so take 25% off of that -2.27, for a -1.7025 disadvantage.

Six card charlie: +0.16%
Double on any number of cards: +0.23%

Early Surrender could be worth as much as 0.39% but odds are it's after the dealer checks for blackjack which is late surrender, which could be only +0.10%.

Even with the possible interactions with a six-card winner and being able to double down with more cards, to potentially double down into a six-card bonus win, losing the premium pay on three quarters of your blackjacks is too much to overcome.

Hope this helps!

 

[phantom]

Thanks. I figured it was worse than a regular game. They don't give you anything without taking away more with these rule variations.

I just remembered that it was late surrender, but you could surrender at any time until you busted. You could even surrender after a split or double down.

 

[Sucker]

This game is very similar to "Super Fun 21", in which; according to Wizard of Odds has a house advantage of 1.16%. However, in Super Fun; suited BJ's pay even money UNLESS the suit is diamonds, for which you get paid 2-1 rather than 3-2.

If you get paid 1.5 for ALL suited BJ's rather than 2.0 for diamond BJ's only, then that would make the game better for the player by about .3%; which puts the house edge at somewhere near .86%.

 

[Dipsy]

Hi, i've posted this on the blackjack variations forum but got not much reply so i thought i'd re-post it here


I've found a single deck game with improved insurance payout, 11 to 5. The bet can be advantagous on any hand when the player does not have a 10 card showing:

3.2*16/49=1.0449 or a player edge of 4.49%.

I'm suspecting the overall house edge reduced would be the result calculated above multiplied by the chance of the advantagous situation happening, ie:

4.49%(4/52)(35/51)(34/50)=0.1612%

and this should be multiplied by the % of the insurance bet compared to the original bet which is

1/(11/5)=.45454545

the final answer is
0.0733%

It is an online casino game and shuffles after every hand. I'm wondering if my calculation of how much overall H/E this shaved off is right. The game has an H/E of -0.0899% without consideration of the insurance bonus. I would hope that i have made a mistake in the calculation so that i can have a +EV game off the top. Please also show how you calculated it if i'm wrong.

:whip: