Me and two of our top posters here had an extended, extemporaneous, colloquium
re: the seemingly weird and unexpected things that occur in Blackjack and Span21
when the penetration is very deep ~ when < ½ deck is all that remains in a shoe.
I soon recalled where the immortal Peter Griffin, Ph.D.
published the following query (not verbatim)
Blackjack. Heads-Up Play.
You have 22 cards remaining.
TWELVE Faces and TWO each of:
Aces, Sevens, Eights, and Nines.
and ONE each of a Deuce and a Trey.
A computer generates all possible hands and possible sequences.
What do you estimate is the advantage for optimal play ?
What would the Basic Strategist’s edge work out to being ?
Note: Soft 17 is not possible.
Note: absence of ranks 4, 5, and 6.
Responses are encouraged, including
guesswork and computer simulations.
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