Row Seven Solitaire, a game for four players. First, all 52 cards are dealt out, 13 cards for each house. Then, the player who holds the 7 of spades plays first. The other three then take turns playing cards. When the cards are played, they must be of the same suit, and the cards are played continuously up or down according to the face value of the cards. If there are other suits in the hand and the face of the card is 7, you can also play the card. Once the cards are played, subsequent players can also move up or down to continue playing cards. If there is no hand card to play, the player needs to cover a card. When all players have finished playing their hands, the game will end, and the program will count the points of each player's folded cards. A represents 1 point, 2 represents 2 points. ． ． K stands for 13 points. The player with the least fold points is the final winner. But if the folded cards have the same number of points, the person with the fewer folded cards is the winner. If the number of points and the number of folded cards are the same, the winner is the one who plays the cards first in the order in which the cards are played. Others: If the last player's cards are all discarded, the points deducted by the other three players will be multiplied by 2 times. Any player whose points are deducted greater than 40 points will be multiplied by 2 times. If any player plays a 7 at the end, that is Owari Seven, the points deducted by the other three players will be multiplied by 4 times. In addition, if all the cards in the hand are covered, that is, thirteen covers, the other players will deduct 1000 points respectively.