The general simple rules have as exceptions four specific cases only:
- Insurance. If the dealer’s first card is an Ace, the player has the possibility to insure against the Blackjack. For this, the player pays half his original bet. If the dealer makes Blackjack, the player loses his bet but will be paid double insurance (thus profit 0, 0 losses). If the dealer does not make Blackjack, two situations are possible: First, the player wins; he loses his insurance but pocketing the equivalent of his initial bet (net income 1/2 times the original bet). Second, the player loses; he loses the insurance and its bet (loss 1.5 times the original bet). It can of course double/split after taking the insurance. If it separates or double it will have to transfer insurance under the second play.
- Split. When a player gets two cards of equal value, it is possible for him to separate the two cards to play two games. For this he must add the same initial setting. Once the games separated, the player plays every hand the same way like a single hand. If he wins the two games he get double (two wins in one shot). If the player loses a game, he does not win and lose nothing. Finally, if he loses the two games he has lost twice in one move. If following a separation, the player gets a third card of the same value (on the first or second table) it can again separate and thus play on 3 tables. Some casinos allow up to two games, some no more than three games.
A special rule concerning the split of the two aces in most casinos: separating the two aces, the player can receive further a single card for each table and can not split again if he receives a third ace.
Important clarification. Blackjack is not possible if split: a player who split two aces and two tens will have two 21 but no two blackjack, because blackjack has to be obtained with the first two cards. It follows, for example, that the player with separate two aces and receiving two tens loses against an ace and a figure of the bank.
- Double. After receiving two cards, the player can choose to double down only on condition of not receiving a card after that. For example, after the deal you have 11 (8 and 3). The dealer has a low card, eg 6. You then choose to double the bet. The hope is to receive a ten to get 21 while the dealer is unlikely to do the same. It is also possible to double after splitting. At the American Blackjack, the player doubles face down (double down), that is to say, the card he receives after doubling it is dealt face down. It sees that once the dealer game ended.
- Surrender. A rule that is not universally accepted. After receiving his first two cards and seeing a dangerous card to the bank, a player may decide to abandon immediately. The bank then get half of the player’s bet.