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Thread: Probability Dealers UpCard v. Players Upcard

  1. #1


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    Probability Dealers UpCard v. Players Upcard

    Hello,

    my Name is Marc Im from Germany , quiting blackjack some years ago with the upcoming of Shuffle-machines.
    Before i was familar with counting, Shuffle-tracking and Ace-Location.

    Im Looking for a Chart of Probability for Dealers UpCard vs. Players UpCard.

    All i found was a Chart of ROI what includes Doubling, Splitting and BJ-Payout.
    Im looking for the "naked" winrate of the hand. especially if its the same.
    for example Dealer has a 2 , i have a 2 - what is the Probability for losing,winning and push. and so on till Ace.

    Has someone such a Chart ?
    Kind Regards

  2. #2


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    Why are we assuming that the player has ONE upcard? Are you looking for the e.v. of just the player's FIRST card, but not the two-card hand, vs. all the dealer's upcards? How would this information be used?

    Don

  3. #3


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    it is About a side bet, same (first) upcard + not lose the hand

  4. #4


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    Quote Originally Posted by TheGerman View Post
    it is About a side bet, same (first) upcard + not lose the hand
    May I have to explain it more detail to get Attention

    There are 2 sidebets

    1. If ur first 2 cards are the same (suit doesnt care) you get 11:1
    2. If ur first upcard is the same as dealers upcard and u win the hand u get 22:1

    Of course this side-bet are worse chance for No1 is at 6deck 23/311 , so u need 12,5:1, No2 even worser.

    Anyway people played it like hell and at the end lost much.
    Maybe that is why they changed the rule for No2 - Now u are paid at push too.
    I expect this is a big boost to +ev for side-bet no2.
    There is a big chance , that if ur upCrad (and dealers upcard) is 7 till Ace , for a push (cause of the 10-Value cards) - to mention: if u have e.g. 77 for a split, the first hand counts.

    Lets say in case u have the same upcard as the dealer and u not losing the hand by 65% , u need 19,8:1 to be equal, but u get 22:1

  5. #5


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    Quote Originally Posted by Bj200 View Post
    See at YouTube : [[redacted]]
    Yes, thats the ROI, but for this side-bet i need the net-outcome win/push/lose.



    however , I calculated it on single-Deck outcome of Dealers- UPCard for 7 till Ten , because its quite the same hit/stay for the player.

    for 7 till Ten its about 55,5% till 56,5 % not losing the hand (about 17,5% push included) far away from my assumed 65% ....
    Even its for starting cards 4,5,6 better , because player have not to hit untill 17. Maybe it grows to 58% overall. Thats just the % you need for 22:1. Dealer force u to tip brings u in -EV.

    However - ty
    Last edited by Norm; 08-10-2019 at 08:17 AM. Reason: SPAM link

  6. #6


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    At least I wrote a program for this issue, cause its to difficult calculate the probability on small card.
    I run it 1 Mio Hands on upcard of 10value for player and dealer. (i run it 10Mio hands too, but it takes 4 days for the result)

    May someone is interested in the result.
    1 Mio- Hands :
    Player Bust: 212205
    Dealer Bust: 167537
    PUSH: 166746
    Player WIN: 394399
    Dealer WIN: 438855

    The difference between Dealer-bust and Player-Bust on same hit-strategy is, because i stopped, when player bust.
    if i calculate this in , the bust-rate is quite the same (player 21,22% vs. dealer 21,275)
    has someone a calculation which confirm this rate (bust on 10value) ? - so i feel more safe about my program.

    What else shows this result? player has only 39,5 % chance to win this hand, 56,1% not to lose, what i calculated before

    one surprising result, but only 10.000 hands:
    Dealer has a 5 (like player)

    Player Bust: 0
    Dealer Bust: 4160
    PUSH: 303
    Player WIN: 4753
    Dealer WIN: 4944
    Player Lose: 4944
    Dealer Lose: 4753

    dealer bust 41,6% on 5 but wins still 49,5% vs players 5 startinghand (of course 10.000 hands there is much variance)

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