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Thread: Doubling A8 and receiving a 2

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    Doubling A8 and receiving a 2

    Hello there guys!

    I came across a doubt: When doubling A8 in a casino with D9 or similar.... if you get a 2, what's the casino's policy you've seen or faced? They say it's 11 since "you doubled on 9" or they validate it as a 21?

    Fortunately what I've seen so far is that you get a 21, but at least one place had the "A8 + DD + 2 = 11" rule

    Thanks in advance!

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    In D9 game you are calling your ace a 1 to double a 9. Sticky with that concept catching a 2 should total 11. Be thankful that some casinos allowed the 21. It may be some dealers and not some casinos. You can take a shot and then not double again if the rules prove to disadvantage or ask the dealer before doubling. You may kill the play if you ask. The dealer might have called it 21 and then ask the Floor for clarification and may be told to call it 11 when the dealer would have called it 21.

  3. #3


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    I've never been in that situation, but I've heard it go both ways.
    "Everyone wants to be rich, but nobody wants to work for it." -Ryan Howard [The Office]

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    Quote Originally Posted by Goodboy View Post
    Hello there guys!

    I came across a doubt: When doubling A8 in a casino with D9 or similar.... if you get a 2, what's the casino's policy you've seen or faced? They say it's 11 since "you doubled on 9" or they validate it as a 21?

    Fortunately what I've seen so far is that you get a 21, but at least one place had the "A8 + DD + 2 = 11" rule

    Thanks in advance!
    Yeah. It is a popular ruling in Reno and some part of Nevada. It is a regional thing.

  5. #5
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    They generally enforce the D9 rule. Sometimes the Pit Critter
    will "cut you some slack" on the first occasion, (if you are the
    type of player they do not want to "run off"). Good luck.

    A few notes are in order:

    Firstly, the House Edge is tainted by this rule, more so than
    a neophyte player would know. Do you know by how much ?

    Secondly, you do NOT play ANY game without knowing the
    precise rules that are in effect.

    Thirdly ... Repeat after me: "Due Diligence."

  6. #6


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    "Firstly, the House Edge is tainted by this rule, more so than
    a neophyte player would know. Do you know by how much?"

    Virtually not worth talking about. Most common doubles for counters of A,8 are vs. dealer's 5 or 6. The difference in edge for the BS player for doubling over standing is 3% vs. 5 and 1% vs. 6. You get each holding about once every 1,100 hands. To double, you need a TC of +1 or higher, which occurs about 29% of the time, so now you're doubling once every 3,800 hands for each upcard, or once every 1,900 hands, or once every 19 hours. Now, of course, the count may be higher and the edge somewhat greater. I'll give you 5% (which is way too high) on, say, a $500 bet. That's $25 once every 19 hours, or $1.32 an hour. BFD.

    In short, it isn't worth jack shit.

    Don


  7. #7


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    For years (they have since allowed soft doubling), Puerto Rico rules were double on hard 9, 10, and 11 only. But, I discovered early on that you could double on A,8, and if you caught a deuce, they called it 21. Dumb, but there you go.

    Don

  8. #8


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    Quote Originally Posted by Tthree View Post
    In D9 game you are calling your ace a 1 to double a 9. Sticky with that concept catching a 2 should total 11. Be thankful that some casinos allowed the 21. It may be some dealers and not some casinos. You can take a shot and then not double again if the rules prove to disadvantage or ask the dealer before doubling. You may kill the play if you ask. The dealer might have called it 21 and then ask the Floor for clarification and may be told to call it 11 when the dealer would have called it 21.
    Thank you T3. In the casinos I've played, the decision is based on house policy, not dealer dependant. Sometimes the dealer doesn't know the policy but he is quickly informed by the pit boss or supervisor
    Last edited by Goodboy; 02-26-2016 at 09:32 PM.

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    I was not referencing a particular hand like the Ace-8 that the O.P. referenced.

    Losing the ability to double any soft hand (and 8's) is worth Jack Shit, and the Mrs. too!

  10. #10


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    Quote Originally Posted by ZenMaster_Flash View Post

    They generally enforce the D9 rule. Sometimes the Pit Critter
    will "cut you some slack" on the first occasion, (if you are the
    type of player they do not want to "run off"). Good luck.

    A few notes are in order:

    Firstly, the House Edge is tainted by this rule, more so than
    a neophyte player would know. Do you know by how much ?

    Secondly, you do NOT play ANY game without knowing the
    precise rules that are in effect.

    Thirdly ... Repeat after me: "Due Diligence."
    Thank you ZenMaster

    About your notes:

    First: Yes, I am fully aware of the effect the D9 rule on the house edge. Unfortunately it's what's normally available to me. I'd say around 90% of my played hours come from tables with that rule.

    Second: I always play knowing the rules of the place. Including the A8 doubling situation. I just happened to wonder what was the policy where you (fellow forum members) usually play or what you usually have seen.

    Third: I agree.
    Last edited by Goodboy; 02-26-2016 at 09:33 PM.

  11. #11
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    Goodboy,

    I assume that you are in Reno.

    I commiserate. Bad rules you may tolerate,

    but how do you feel about the preferential shuffling,

    as I assume that you are not playing with a cut-card.


  12. #12


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    Quote Originally Posted by ZenMaster_Flash View Post

    Goodboy,

    I assume that you are in Reno.

    I commiserate. Bad rules you may tolerate,

    but how do you feel about the preferential shuffling,

    as I assume that you are not playing with a cut-card.

    I feel bad for those who have to deal with preferential shuffling. Fortunately it's not my case. I have never played a game without a cut card.
    Last edited by Goodboy; 02-26-2016 at 09:32 PM. Reason: 8

  13. #13


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    Quote Originally Posted by Goodboy View Post
    I feel bad for those who have to deal with preferential shuffling. Fortunately it's not my case. I have never played a game without a cut card.
    In single deck, a cut card is bad for the player...
    https://www.blackjackincolor.com/blackjackeffects1.htm

    But yeah, it's even worse if they don't deal a consistent number of rounds.

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