The basic strategy is that the player evaluates his cards based on the dealer's one open card. In this way, you can determine your chances of winning. For example, the dealer has a ten open and you have 15 points. In this case, your chances of beating the dealer are low, it is better to take a risk and take one card. Some players try to play blackjack by counting cards. In online casinos, this works poorly, since dealers use several decks, and a shuffle machine is used in slot machines.