See the top rated post in this thread. Click here

Results 1 to 2 of 2

Thread: Relating to CDZ for 1 allowed split

  1. #1

    1 out of 1 members found this post helpful. Did you find this post helpful? Yes | No

    Relating to CDZ for 1 allowed split

    After the recent posts about trying to relate to a CDZ strategy I remembered that I had a program whose sole purpose is to output optimal SPL1 EVs. I found it had an error because instead of adding/removing a parameter called upCard I was adding/removing a parameter called rank in one portion of the program. It has been downloadable from my website for about nine years and I updated the downloads. I hope there are no more errors.

    As far as precisely enumerating a CDZ strategy that covers SPL1 I guess that it might only help in identifying where the post split strategy differences from CDZ- might be. Although compiling some sort of strategy list might be doable, it's something I wouldn't care to do.

    What the program endeavors to do is to compute each of the 2 pair hands. SPL1 can be computed by computing hand 1 and multiplying by 2. This only requires using unbusted hands. If hand 2 is computed taking into consideration the cards removed from hand 1, the busted hand 1 hands need to be considered also. This is more optimal. The need to use busted hands could be applied to even more allowed splits with a growing amount of complexity.

    Sample output for 9-9 vs ace, single deck S17 NDAS, unconditional EVs (player BJ pushes dealer BJ, otherwise loses)
    Shoe comp (A-5):  {4, 4, 4, 4, 4}
    Shoe comp (6-T):  {4, 4, 4, 4, 16}
    Single split EVs (full peek)
    Press c or C to display EV on the condition that dealer has checked for
    for blackjack - Press any other key to display unconditional EV: Unconditional
    Please input pair value.
    (a or A,2,3,4,5,6,7,8,9,t or T): Pair value = 9 ...Computing, please wait...
    SPL1 (split & play without knowledge of dealer up card): -0.0236440395378017
    SPL1 versus 2: 0.173232943411645
    SPL1 versus 3: 0.172778633765097
    SPL1 versus 4: 0.252688077504041
    SPL1 versus 5: 0.339219595561846
    SPL1 versus 6: 0.359377292533821
    SPL1 versus 7: 0.34057565610755
    SPL1 versus 8: 0.179418224640052
    SPL1 versus 9: -0.112239530063659
    SPL1 versus T: -0.32491952594157
    SPL1 versus A: -0.375118168549501
    Press any key to continue

  2. #2

    Did you find this post helpful? Yes | No
    I can confirm that your numbers are right as they exactly match mine . I think strategy variations will only appear for a well depleted single deck, but I still won't make a big enough impact to change the overall EV and call for a different strategy for a given dealer up card / player hand
    Chance favors the prepared mind

Similar Threads

  1. Relating Kelly fraction to ROR quickly
    By Optimus Prime in forum General Blackjack Forum
    Replies: 11
    Last Post: 11-04-2018, 10:06 AM
  2. Replies: 9
    Last Post: 03-01-2017, 10:05 AM
  3. MGP: No Doubling Allowed
    By MGP in forum Blackjack Main
    Replies: 2
    Last Post: 10-19-2005, 04:09 AM
  4. SpiderMan: Are players allowed
    By SpiderMan in forum Las Vegas Everything
    Replies: 7
    Last Post: 07-28-2004, 08:07 PM


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

About Blackjack: The Forum

BJTF is an advantage player site based on the principles of comity. That is, civil and considerate behavior for the mutual benefit of all involved. The goal of advantage play is the legal extraction of funds from gaming establishments by gaining a mathematic advantage and developing the skills required to use that advantage. To maximize our success, it is important to understand that we are all on the same side. Personal conflicts simply get in the way of our goals.