Re: Blackjack: Card counting counter-measure(s)
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Is counting card that popular ? I always imagined it as VERY marginal with at most 100 in the world who had an idea on how to do it.
What kind of edge can someone who count card properly has assuming decent rules.
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There are books and websites all over the place telling how to count. Lots of people know how to do it, though it is a very small percentage of all blackjack players. However, there are very few really good games left, and probably only a small percentage of counters do it well enough, and have a sufficient bankroll to make serious money at it. Counting gives you a very small edge in a high variance game, but it's not all that hard to do with a little practice.
The edge you can get at a game depends on penetration (how deep into the deck or shoe they deal), how big a spread (ratio between min and max bets) you can get away with, and the rules of the specific game, but around 2% is probably the best you can hope for, with 0.5%-1% more likely. There are other advantage play techniques, such as shuffle tracking and ace location, which are much harder than counting but can give you a bigger edge, with the right game conditions.
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