# Reducing cards talked over around Blackjack

How To Play Blackjack

Where multiple decks do make a difference is in how much impact a positive Running Count has to the player advantage. If the Running Count is +10 and there are two decks remaining to play, this means there are an extra 5 player favourable cards in each deck. If there are 5 decks remaining to be played there are only 2 extra player favourable cards in each deck.

I just witnessed a friend get four blackjacks in a row starting with the first hand of a newly shuffled single deck playing head to head against the dealer. I looked at the FAQ’s and saw the odds for getting one blackjack in single deck, but don’t know how to calculate them for getting four in a row off the top. Instead of a decimal probability, could you tell me the odds of this? I have no problem with increasing your bet when you get a lucky feeling.

In fact, for the expert player who mathematically plays a perfect game and is able to count cards, the odds are sometimes in that player’s favor to win. These blackjack games using fewer decks and limiting rules have become favoured by Australian casino vendors as they are highly favourable to the house, much to the disdain of punters. Dedicated blackjack players should consider switching to play online where the probabilities and house edges are more favourable to the player. So while players can benefit from using fewer decks, the unfair rules make the game work in the houses favour.

In case you are wondering what face cards are, they are cards that have pictures on them instead of the regular numbers. Half of the twelve face cards are black and the remaining half is red. Another option open to the player is doubling their bet when the original two cards dealt total 9, 10, or 11. With two fives, the player may split a pair, double down, or just play the hand in the regular way. Note that the dealer does not have the option of splitting or doubling down.

So in 10,000 hands you are likely to win or lose less than 2% of total money bet due to random variation. However if we go up to one million hands the probability is 90% of an 0.2% variation due to luck. In general the variation in the mean is inversely proportional to the square root of the number of hands you play. All of this assumes flat betting, otherwise the math really gets messy.

If someone isn’t consistent with some strategy either they are beginners and don’t know basic strategy, or they are counting and using basic strategy variations. Standing 12v2 at a higher bet but hitting at lower bets is another example of a basic strategy variation. Hitting 12v4 around half the time is another example. For the same reason, you will get fewer dealt hands of 20! Once you remove the first ten-value card, there are only 15 tens left in 51 cards in single deck, while in double deck your chances are better with 31 out of 103. All told, the probability of drawing a blackjack from a single deck shoe is 4.83%.