In a game of Blackjack, opportunities to split will likely be rare. In some cases, a Blackjack achieved on a split hand will not count as such, and simply be valued at 21. Generally, you are allowed to hit or double down on a split hand, with the exception of if you have split two Aces, in which case the two hands are often not allowed to consist of more than two cards. Should one of these hands become a pair, the player is allowed to split again and enter a third hand whilst tripling their stake, and so on. The two cards are then treated as the first card of two new independent hands that are played out separately. If a player decides to split, they must place a second bet for that round of the same value as their original bet, essentially doubling their stake.
This means any pair from Ace through to nine and any two cards valued at 10 (for instance, a 10 and a Queen). A player can split in a round of Blackjack if their opening two cards are of the same value.
