Split / Splitting Pairs (blackjack)
To split a matched pair of cards in blackjack and play each
card as a separate hand. Usually, any pair of ten valued cards
may be split as if they were a natural pair. You place an additional
bet equal to your original bet on the separated card. In most
casinos if the second card on either or both of these 'new'
hands make another pair, you can split that hand as well. Some
casinos do not allow Aces to be resplit. When splitting pairs,
as with "Doubling Down", if the dealer gets a "Blackjack",
only the original bet will lose.