Blackjack of course still contains a big chance element, but you can learn to win systematically over and over again. Your goal in Blackjack is to approach 21 from what the seller does. You and the seller are trying not to bust, and you are hoping to bust the seller first. A strategy developed for Blackjack is called card counting. This system benefits from the fact that blackjack is a mathematical game. It is a skill that does not work perfectly and is hard to learn. It is completely legal, but it is often against the rules or it is crunching heavily. Casinos that determine card numbers are usually entitled to throw out the door in normal locations, except for Online Casino Blackjack. Offline, this makes the card counting badly difficult. You should be able to do this mentally, as if you were doing something like this. This may allow you to think that online blackjack provides you with an excellent opportunity to count cards. In your theory, you don't have to count on your head, which should greatly simplify the whole issue. The casino can't catch you to count, so there's nothing to worry about. Despite both of these valid points, online card counting is more difficult and indisputable than offline. Why? Online Casino Blackjack falls into what is known as online penetration. Penetration is measured as a percentage of cards that are distributed before the dealer reorganizes the deck. You obviously want a high percentage. When you see the maximum number of cards, you get the most accurate count.