The Score

LAW 77 DUPLICATE BRIDGE SCORING TABLE

TRICK SCORE
Scored by declarer's side if the contract is fulfilled
  IF TRUMPS ARE C D H S
For each odd trick bid and made
Undoubled 20 20 30 30
Doubled 40 40 60 60
Redoubled 80 80 120 120
 
AT A NOTRUMP CONTRACT
 UNDOUBLED   DOUBLED   REDOUBLED 
For the first odd trick bid and made 40 80 160
For each additional odd trick 30 60 120
 
A trick score of 100 points or more, made on one board, is GAME
A trick score of less than 100 points is a PARTSCORE
 
 
PREMIUM SCORE
Scored by declarer's side
 
SLAMS
For making a slam Not Vulnerable Vulnerable
Small Slam (12 tricks) bid and made 500 750
Grand Slam (all 13 tricks) bid and made 1000 1500
 
 
OVERTRICKS
For each OVERTRICK Not Vulnerable Vulnerable
(tricks made in excess of contract)
Undoubled Trick Value Trick Value
Doubled 100 200
Redoubled 200 400
 
 
PREMIUMS FOR GAME, PARTSCORE, FULFILLING CONTRACT
For making GAME, vulnerable 500
For making GAME, not vulnerable 300
For making any PARTSCORE 50
For making any doubled, but not redoubled contract 50
For making any redoubled contract 100
 
 
UNDERTRICK PENALTIES
Scored by declarer's opponents if the contract is not fulfilled
 
UNDERTRICKS
Tricks by which declarer falls short of the contract
 
Not Vulnerable Vulnerable
Undbld Dbld Rdbld Undbld Dbld Rdbld
For first undertrick 50 100 200 100 200 400
For each additional undertrick 50 200 400 100 300 600
Bonus for fourth and            
each subsequent undertrick 0 100 200 0 0 0



LAW 78 METHODS OF SCORING

A. Matchpoint Scoring

In matchpoint scoring each contestant is awarded, for scores made by different contestants who have played the same board and whose scores are compared with his, two scoring units (matchpoints or half matchpoints) for each score inferior to his, one scoring unit for each score equal to his, and zero scoring units for each score superior to his.

B.  International Matchpoint Scoring

In international matchpoint scoring, on each board the total point difference between the two scores compared is converted into IMPs according to the following scale:

Difference         Difference         Difference  
in points IMPs       in points IMPs       in points IMPs
20 - 40 1       370 - 420 9       1500 - 1740 17
50 - 80 2       430 - 490 10       1750 - 1990 18
90 - 120 3       500 - 590 11       2000 - 2240 19
130 - 160 4       600 - 740 12       2250 - 2490 20
170 - 210 5       750 - 890 13       2500 - 2990 21
220 - 260 6       900 - 1090 14       3000 - 3490 22
270 - 310 7       1100 - 1290 15       3500 - 3990 23
320 - 360 8       1300 - 1490 16       4000 & upwards 24

C. Total Point Scoring

In total point scoring, the net total point score of all boards played is the score for each contestant.

D. Special Scoring Methods

Special scoring methods are permissible, if approved by the sponsoring organization. In advance of any contest the sponsoring organization should publish conditions of contest detailing conditions of entry, methods of scoring, determination of winners, breaking of ties, and the like.

LAW 79 TRICKS WON

A. Agreement on Tricks Won

The number of tricks won shall be agreed upon before all four hands have been returned to the board.

B. Disagreement on Tricks Won

If a subsequent disagreement arises, the Director must be called. No increase in score need be granted unless the Director is called before the round ends as specified in Law 8 (but Law 69 or Law 71 may supersede this provision when there has been an acquiescence or a concession).

C.  Error in Score

An error in computing or tabulating the agreed-upon score, whether made by a player or scorer, may be corrected until the expiration of the period specified by the sponsoring organization. Unless the sponsoring organization specifies a later *) time, this correction period expires 30 minutes after the official score has been made available for inspection.

*) An earlier time may be specified when required by the special nature of a contest.