12 v 4 is a very significant hand, a member of the Illustrious 18. 2 card CD indices for the hand are well known. A more detailed examination of the hand (a mean 3 card index, for example) has not been performed, to my knowledge.
The 2 card CD indices (SD) of the hand are as follows (Professional Blackjack; Zenfighter): 10,2:+2; 9,3:0; 8,4:0; 7,5:0. The mean index of the hand is 0.
Note that 10,2 is a much more common hand than the other 2 card indices.
Is it possible that the mean 3 card index is a negative one, since the mean index is 0?
-2 or thereabout, perhaps?
If so, this would be a valuable CD index.
I hope someone on the site shares my interest.
JL
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