sagefr0g said:
probably i just need to go back and read Shlesinger's stuff on floating advantage again.
but anyway, i don't recall reading this in Blackjack Attack but i think i read a post on this site that stated that part of what the floating advantage is, is the fact that single deck with common multiple deck rules can have a player advantage and that essentially the deeper you get in the pack you can approach that advantage. for example say you have pen so good, you get to one deck left to be dealt and the tc=0, then you virtually have that single deck advantage, sort of thing. is this correct?
:whip:
Yep that is correct Sage, it is a good example you give.
The idea is you have a 6D shoe S17 DAS, DO2, BJ 3:2, so when 5 decks have been dealt and TC=0, we virtually have a one deck game with a normal deck composition (not entirely true because you can have different compositions that gives you a TC of 0). When you have a 1D game with the above rules you actually have the advantage over the house (+0.2%).
The other point that is worth mentioning is that the floating advantage is more pronounced for zero to moderately high TCs (1, 2, 3), for instance a TC=2 is over twice more valuable in the last deck when compared to the first or second deck.
One last point (they keep on coming!), at very deep penetration i.e depleted shoe, playing decisions start to weigh in much more, so the playing efficiency starts to kick in, that is why Hi-Opt II (high PE) for instance fairs much better than Hi-Lo as the penetration of the game increases.
H Bomb said:
I'm by no means an expert (found this site a few days ago, this is my 2nd post and really the 1st time discussing BJ in depth with other people, done some research on the internet but never read a BJ book, never done any sim analysis, never heard of floating advantage) so I apologize if I say something idiotic.
Let's say you're playing an X deck game with Y decks left and TC = 0. It seems at this point you're essentially playing a Y deck game. If this is the case then (at least for TC = 0):
1. Floating advantage (if I'm grasping this right) = Y deck BS HE - X deck BS HE
2. You should switch to Y deck BS (ex. 6D shoe with 2 decks left, double on 9 vs. 2)
3. You should switch to Y deck BS indices (ex. same situation as #2, insurance index of 2.4)
4. If you're Kelly betting the FA is not going to change your bet, at least not a whole unit. Intuitively guessing, the only situations where the FA is close to 0.5% is at the end of an 8D 85% pen game or 2D 65-70% pen game. Obviously, I could be wrong about this.
It seems an "FA adjustment" (#2-4 above) is actually a lot more valuable on DD than shoe games because for DD the FA is bigger and BS changes and index changes are more drastic (ex. DD half way through, double on 8 vs. 5 and 6, insurance index of 1.4).
Actually FA is the advantage of a given card density(True Count) compared at different shoe depths.
Basic Strategy is the optimum playing decisions that would maximize your expectation for a given shoe composition(usually a normal one) and a set of rules. You can't just change your BS or indices halfway at 50%, you need to use the indices of the primary count system, and side-count some cards and use multi-parameter table for improved playing decisions.