The result of each deal played is recorded in points, which fall into two classes:

1. Trick Points. Only declarer's side can earn trick points, and only by winning at least the number of odd tricks specified in the contract. Only the value of odd tricks named in the contract may be scored as trick points (see Law 81). Trick points mark the progression of the rubber toward its completion.

2. Premium Points. Either side or both sides may earn premium points. Declarer's side earns premium points by winning one or more overtricks; by fulfilling a doubled or redoubled contract; by bidding and making a slam; by holding scorable honors in declarer's or dummy's hand; or by winning the final game of a rubber.* The defenders earn premium points by defeating the contract (undertrick penalty) or by holding scorable honors in either of their hands (see Law 81).

Each side's premium points are added to its trick points at the conclusion of the rubber.
 

* For incomplete rubber, see Law 80.
 

The basic units of trick points are partscore and game. A partscore is recorded for declarer's side whenever declarer fulfills a contract for which the trick points are less than 100 points. Game is won by that side which is the first to have scored 100 or more trick points either in a single deal or by addition of two or more partscores made separately. No partscore made by either side in the course of one game is carried forward into the next game.
 

A rubber ends when a side has won two games, At the conclusion of the rubber, the winners of two games are credited with a premium score of 500 points if the other side has won one game or with 700 points if the other side has not won a game. The trick and premium points scored by each side in the course of the rubber are then added. The side with the larger combined total wins the rubber, and the difference between the two totals represents the margin of victory computed in points.
 

The score of each deal must be recorded, and it is preferable that a member of each side should keep score.

Scores are entered in two adjacent columns separated by a vertical line. Each scorer enters points earned by his side in the left-hand column, and points earned by his opponents in the right-hand column.

Each side has a trick point score and a premium point score, separated by a horizontal line intersecting the vertical line. All trick point scores are entered, as they are earned, in descending order below the horizontal line (below the line), all premium point scores in ascending order above the line.

Whenever a game is won, another horizontal line is drawn under all trick point scores recorded for either side, in order to mark completion of the game. Subsequent trick point scores are entered below that line.

 

When the play of a deal is completed, all four players are equally responsible for ascertaining that the number of tricks won by each side is correctly determined and that all scores are promptly and correctly entered.
 

A trick transferred through a revoke penalty is reckoned for all scoring purposes as though it had been won in play by the side to which it had been awarded.*
 

* Declarer plays in 3 and takes eight tricks. A revoke by a defender is found to have been established, with the penalty determined to be two tricks. Two tricks are transferred from the offenders to declarer, who therefore has 10 tricks. Since he bid only 3, he scores 90 trick points, which count toward game, and 30 premium points for the overtrick.

When it is acknowledged by a majority of the players that a scoring error was made in recording an agreed-upon result (e.g., failure to enter honors, or incorrect computation of score), the error must be corrected if discovered before the net score of the rubber has been agreed to. However, except with the consent of all four players, an erroneous agreement as to the number of tricks won by each side may not be corrected after all players have called on the next deal.

In case of disagreement between two scores kept, the recollection of the majority of the players as to the facts governs.

Scores recorded for deals played with an incorrect pack are not subject to change by reason of the discovery of the imperfection after the cards have been mixed together.
 

When, for any reason, a rubber is not finished, the score is computed as follows:

If only one game has been completed, the winners of that game are credited with 300 points; if only one side has a partscore or partscores in a game not completed, that side is credited with 100 points; the trick and premium points of each side are then added, and the side with the greater number of points wins the difference between the two totals.

NOTE: The printed (American) version erroneously states:
"Scored above the line by declarer's side.", which is wrong (see Law 75).