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Thread: holecarding online. calculating player advantage. no card counting

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    Question holecarding online. calculating player advantage. no card counting

    I am trying to calculate if there is a player advantage when it is possible to tell when a certain hole card is present at the dealer.
    I have noticed a certain online casino studio that has imperfect cards/scanner combination that makes it possible to recognize exactly two type of ten cards.two out of the 52 cards have a imperfection, lets say 10 of hearts and 10 of diamonds.
    So whenever one of these two 10's is the holecard there is a tell and it is possible to say with 95% accuracy that it is indeed a ten in the holecard.
    Would this information give enough player advantage to make it profitable to play flat betting with no additional card counting.


    rules:
    dealer has hole card
    only checks for blackjack on upcard Ace,
    soft 17 dealer stands
    double allowed on every two cards
    max 1 split
    aces max 1 split
    double after split allowed
    no surrender option




    I have tried using the CVData programme to simulate this scenario but I have not been successful to get the holecards scenario correctly into the simulation.
    I would appreciate the input of experts in here.
    What would your intuition say is the approx player advantage?
    Is anyone capable of running a simulation and getting estimates of player advantage/house edge.

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    i guess i posted this in the wrong forum so please delete this if that is the case

  3. #3
    Random number herder Norm's Avatar
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    So, if I understand correctly, you are saying you know dealer has a BJ with ace up and red ten down. Don't use the hole carding functions. Instead, use the custom bonus function to create a bonus in that situation.
    "I don't think outside the box; I think of what I can do with the box." - Henri Matisse

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    Norm - just to understand the software better, would you create an additional situation for hitting player hard 17,18,19 when the hole card is one of the two known 10's AND the dealer up card is one higher than the player hard totals listed above (8, 9, 10 respectively)?

    Quote Originally Posted by Norm View Post
    So, if I understand correctly, you are saying you know dealer has a BJ with ace up and red ten down. Don't use the hole carding functions. Instead, use the custom bonus function to create a bonus in that situation.

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    Random number herder Norm's Avatar
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    Wouldn't apply in the OP's situation as dealer only peaks on Ace. Assuming you know anyhow, that's not supported. The HC function can distinguish between T, J, Q, K, but not suits. So, you could set it up to work for just tens, but not just red tens.

    Having said that, if you have any sort of hole card opportunity, you oughtn't destroy it by hitting 17, 18, 19.
    "I don't think outside the box; I think of what I can do with the box." - Henri Matisse

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    My understanding, and maybe the OP can clarify, is that the imperfection is on the back of the card so he is able to recognize two specific hole cards as being a 10 without the online dealer needing to check the hole card.
    In that event why wouldn't the OP hit his hard 17 if he is facing a dealer up card of 8 or higher with this distinguishable hole card of a 10. In the hope of catching a Ace, 2, 3 or 4.

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    Random number herder Norm's Avatar
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    1 out of 1 members found this post helpful. Did you find this post helpful? Yes | No
    If you hit 17 when the dealer has 18, it will look suspicious to the casino. Do it more than once and it will look very suspicious. You don't want to risk losing an opportunity.
    "I don't think outside the box; I think of what I can do with the box." - Henri Matisse

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    The imperfection is not on the back of the card but the front. the front of the card includes a barcode which is scanned when the card is pulled from the deck. In two specific cards the barcode nearly overlaps with the card number and suit. this means this card is almost always not scanned properly in 1 smooth motion. so the dealer has to rescan this specific card 2/3 times before it is recognized by the scanner.
    So the advantage tell that the player can see is not visibly on the card but in the way the dealer scans the card. As it takes longer to scan the red 10.


    So I get to apply hole carding strategy in every situation with any dealer upcard + the red 10 as a hole card
    Not only this would help with taking insurance in the case the hidden red ten is there.
    But I would also for example double down on 7/8/9 against any dealer 13-16 in this case. and not double down on 10/11 if dealer has 17+
    I would not hit 17+ if dealer has 18/19/20 since that would be too obvious.
    I would also stand every 16 vs dealer 10 if the hole card does not contain the red ten.
    Last edited by miroslav; 12-07-2022 at 04:13 AM.

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    Quote Originally Posted by Norm View Post
    So, if I understand correctly, you are saying you know dealer has a BJ with ace up and red ten down. Don't use the hole carding functions. Instead, use the custom bonus function to create a bonus in that situation.
    The holecard is always scanned, so i get the information that the holecard is the red ten with every upcard.

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    Quote Originally Posted by miroslav View Post
    and not double down on 10/11 if dealer has 17+
    Did you mean to write if dealer has >17? Because you definitely would double 10 and 11 vs. dealer 17.

    Don

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    Random number herder Norm's Avatar
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    Quote Originally Posted by miroslav View Post
    The holecard is always scanned, so i get the information that the holecard is the red ten with every upcard.
    In this case, you could set the HoleCard screen as follows:

    Partial HC
    Always Peek
    HC Seen Percentage 50%
    T in the first row
    Attach the Hole Carding strategy in the NW/QFIT folder
    "I don't think outside the box; I think of what I can do with the box." - Henri Matisse

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    Quote Originally Posted by DSchles View Post
    Did you mean to write if dealer has >17? Because you definitely would double 10 and 11 vs. dealer 17.

    Don
    Upon double checking, it would appear that what I wrote above is wrong. Although there are more cards that can help your double than not (i.e., you would win your double more than you'd lose it), the benefit from being able to hit more than once outweighs the value of the double. Sorry about that!

    Don

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    Quote Originally Posted by DSchles View Post
    Upon double checking, it would appear that what I wrote above is wrong. Although there are more cards that can help your double than not (i.e., you would win your double more than you'd lose it), the benefit from being able to hit more than once outweighs the value of the double. Sorry about that!

    Don
    Yes, I was also wondering why you should double in this situation and had in mind that the optimal play for 10 and 11 versus 17-20 is to hit. As a general rule, these optimal hole card strategy tables (e.g. from WizardOfOdds) say that doubling is never favorable against a dealer pat hand. The only situation which might be different is when the dealer has soft 17 and the H17 rule applies. I have not seen any HC strategy table addressing the S17 versus H17 issue, so I am not sure if there are any differences. Also, the surrender rule is often not addressed but I read that surrendering stiff hands versus 10,11 and 19,20 is favorable.

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