The Last Nine Tricks.
53.—The winner of the last trick adds fifty to the score.
54.—The winner of the last trick is bound to score it (except as provided in Law 21).
55.—If, during the play of the last nine tricks, a player fail to follow suit when able, or fail to win the card led when able—on detection of the error, the card erroneously played, and all cards subsequently played, must be taken up and replayed.
Computing the Game.
56.—The brisques (aces and tens) score ten each to the player having them in his tricks; but the brisques are only taken into account as provided in Laws 60 and 61.
57.—The winner of the game deducts the score of the loser from his own (excluding fractions of a hundred), and the difference, with five hundred added for the game, is the number of points won. If the difference between the scores be less than a hundred, the winner adds a hundred to the score of five hundred for the game.
58.—If the loser fail to score a thousand, he is rubiconed. The winner, whether his score reach a thousand or not, adds the score of the loser to his own (excluding fractions of a hundred) and the sum, with thirteen hundred added for the game, is the number of points won.
59.—If a player who is rubiconed has scored less than a hundred, the winner adds a hundred to his score, in addition to the score of thirteen hundred for the game.