If a player rolls an acey-deucey (= a 1 and a 2, also called an Ace and a Deuce), he plays the 1-and-2; then they choose any number from 1 to 6 and act as if they had just thrown a doublet of it; then that player takes another turn.

In Poker, the Ace is the highest card and the 2 card (Deuce) is the lowest. However, the Ace can also be used as a low card, with the value of 1.