Desgin the game Blackjack.
For a given deck of cards, there are two people playing. The dealer and the player. The dealer takes two cards and one of them is hidden. The player gets two cards after that he can choose to HIT or STAND. Get one more card or give dealer the move. The dealer makes a move if his total value of card if less than 17.
The first person to reach 21 wins. All face cards are worth 10 except for ACe which can be 1 or 11 depending on the situvation.