Minor bug fix.
"Tilted Nail" is a simple Chinese Domino card game. Each player holds 8 cards and takes turn to play a card. Players must follow "suit" when playing a card. If he cannot follow, he has to fold one of his unplayed cards. When all cards are played, folded cards are turned over to count how many digits each player has folded. The player who folded the most digits will lose the most points.
