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Thread: What's the house edge on pure 21.5 Blackjack?

  1. #1


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    Question What's the house edge on pure 21.5 Blackjack?

    Basic rule:
    6 decks, 6:5, h17, ds, rsa, sr

    Also:
    If the player busts and the dealer’s hand is 888, it's a push.


    The house edge for the basic rule should be 1.84%, but I can't figure out the house edge including the added 888 push rule.


  2. #2
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    Negligible change. Odds of the dealer getting 888 is 24/312*23/311*22/310 = .0004037 or .04% of the time. That is 1 out of every 2500 hands and you might have a hand that is already resolved for a decent percentage of that (BJ or hitting out against an 8 and busting. You are going to hit out against an eight unless you double down). So like one time in every 40 hours you get a push instead of a loss.

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