Gin Rummy game is played by 2 players. At the start of a game each
player is dealt 10 cards, 1 card is put face up as the first card in the
discard pile, the rest of the cards are put face down as the stock pile.
The first player starts the round by picking up a card in the discard
pile or the stock pile, and then discarding a card from his hand to the
discard pile, then the next player starts his round, and so on.