Unusual Split A,A Rule

[BOND]

I recently encountered a BJ 6d game with allows the player to split A,A and have option to double or draw more cards. It is a ENHC were the player loses all splits and double downs to a dealers blackjack. The double rule is permitted on any of the single Ace cards that are split. The player can only resplit Aces if he does not double. After the player elects to double on a split A, he cannot draw more cards on this split A.

If the player elects to double and receives a 2nd A he cannot resplit the 2 aces. According to basic strategy, the player should always split A,A against all dealer cards except against a dealers A. According to basic strategy, I the player should double against all dealer cards except a dealer's T, J, Q, and K (only double at high true counts of 4 or more). If the dealer has a T, J, Q, or K, the player should draw more cards according to basic strategy.

A few questions:

1) Are there any other exceptions for the player to draw vs. double OR double vs. draw?

2) According to Snyder, draws after splitting Aces is worth about 0.14%. How much is this particular rule worth: double after spltting Aces + draws after splitting Aces?

[bjarg]

?? You have to decide on a double down before being dealt the second card?

[BOND]

?? You have to decide on a double down before being dealt the second card?

Yes...

[hitthat16]

In that case, wouldn't you always double down each ace as long as the dealer was showing 2-9? It's the same as starting with eleven on each hand. Sounds like a pretty sweet deal.

Against a ten just take the draw and hit as necessary since this is ENHC. Against an ace you shouldn't have split them in the first place. (Although if you're able to draw on them, I'm not sure if that last statement is correct.)

[BOND]

In that case, wouldn't you always double down each ace as long as the dealer was showing 2-9? It's the same as starting with eleven on each hand. Sounds like a pretty sweet deal.

Against a ten just take the draw and hit as necessary since this is ENHC. Against an ace you shouldn't have split them in the first place. (Although if you're able to draw on them, I'm not sure if that last statement is correct.)

1) Yep, basic strategy says to double if the dealer is showing 2-9. The only drawback is the player cannot resplit if another A is drawn on the double.

2) Basic strategy indicates that the player should not double after splitting A,A against a dealer's T, J, Q, K and only take draws according to basic strategy. Only at high true counts of 4 or more should the player double after splitting A,A if the dealer is showing T, J, Q, or K.

3) Against a dealer's A, the player should not split A,A no matter how high the true count.

[hitthat16]

1) Yep, basic strategy says to double if the dealer is showing 2-9. The only drawback is the player cannot resplit if another A is drawn on the double.

That is a drawback, but then it's just like getting a stupid ace on any other eleven. That's the only way to look at it.

[Exoter175]

This sounds vaguely familiar to a game in an Indian Casino I played last year in the "northern" part of the country. Any chance that's where it is located?

[BOND]

This sounds vaguely familiar to a game in an Indian Casino I played last year in the "northern" part of the country. Any chance that's where it is located?

This particular casino is located outside the USA.

[Exoter175]

This particular casino is located outside the USA.

But not so far "outside" the USA to be close to the "Northern" part of it?

[moo321]

1. The EV of double is the same as the EV-double 11 vs. that upcard.

2. But, the EV of not doubling is higher than the EV-hit vs. that upcard, because you could resplit the aces.

I'm certain you don't double against the 10,A up due to ENHC (you don't double 11 v. 10, A anyways).

I don't know how to evaluate this. You could guess based on the EV-hit vs. EV-double. I'm guessing it might swing the 7-9, but I'm sure you would still double against 2-6.

[BOND]

1. The EV of double is the same as the EV-double 11 vs. that upcard.

2. But, the EV of not doubling is higher than the EV-hit vs. that upcard, because you could resplit the aces.

I'm certain you don't double against the 10,A up due to ENHC (you don't double 11 v. 10, A anyways).

I don't know how to evaluate this. You could guess based on the EV-hit vs. EV-double. I'm guessing it might swing the 7-9, but I'm sure you would still double against 2-6.

I went through Wong's Basic Blackjack and other resources and did not find any cambinatorial analysis or simulations of this rule. I am guessing that double on split Aces vs. dealer's 2-6 in all counts and double 7-9 in positive counts.

[Aslan]

aces In DD ENHC, would you double down against a dealer ten? Ace? In DD, would you choose not to split aces at -18 per the index?