jackpot poker

First player starts by randomly saying an integer form [1,3] for his turn, then the next player randomly adds to the previous number an integer also from [1,3] an so on by circle, until someone will be forced to say 21 and lose (the sum can't exceed 21, so if the previous number was 20, player is forced to say 21(his ...

Your goal is to draw cards that total 21, or come closer to 21 than the dealer without going over. The dealer and each player start with two cards. The dealer's first card faces up, the second faces down. Face cards each count as 10, Aces count as 1 or 11, all others count at face value.