How to play bridge? Begin here!
January 1, 2017
Responding 1NT to a takeout double
January 2, 2017


The score for making a contract is made up of two parts.

  • points for tricks bid and won
  • bonus depending bid depending on whether you are in a partscore, game or slam

For defeated contracts, the number of tricks declarer is short by determines the score.

Trick Value

The lowest bid a player can make, and therefore the lowest possible contract, is 1C. But for any contract the declarer is expected to win the number of tricks bid plus another 6. Those extra 6 tricks are called the ‘book’.

If the contract is 1C the declarer must make 1 trick + 6 tricks for the book which equals 7 tricks.

If the contract is 7NT the declarer must make 7 tricks + 6 tricks for the book which equals 13 tricks.

Declarer scores points for the tricks made after the book and the points won depends on what suit was trumps.

Clubs and diamonds are called the ‘minor’ suits. They’re worth 20 points per trick.

Hearts and spades are called the ‘major’ suits. They’re worth 30 points per trick.

Notrumps is an odd one! The first trick in notrumps is worth 40 points and any tricks beyond that are worth 30 points per trick.

Let’s say the contract was 4S and declarer made 10 tricks.
The first 6 tricks made are the book and they don’t score any points. Spades were trumps so the remaining 4 tricks are worth 30 points each for a total of 120 trick points.


If declarer wins more tricks than needed for the contract those overtricks are worth the same as the tricks, 20 for the minors, 30 for the majors notrumps.

Part-scores, games, slams and grand-slams

Every making contract earns a bonus depending on the trick points won. Note that points won for overtricks aren’t included when calculating the bonus.

If the trick points are less than 100 the bonus is 50 points. These low level contract are called ‘part-scores’.

If the trick points are 100 or more the bonus is 300 for non vulnerable contracts and 500 for vulnerable contracts.

The vulnerability of each hand is indicated on the game screen bidding pad at Sky Bridge Club by colour. Red is vulnerable.

The bonus is worth more than the trick points. Nice! These are called ‘game’ contracts.

A contract of 3NT is worth 40 for the first trick and 30 each for the next two. That’s 100 points. 3NT is a game contract.

4 and 4 at 30 points each and 5 and 5 at 20 points each are also games.

6-level contracts are called ‘slams’ and 7-level contracts are called ‘grand slams’. Slams and grand slams score extra bonus points.

Bonus points

50 points, regardless of vulnerability.

game (3NT, 4, 4, 5, 5 )
300 non vulnerable, 500 vulnerable

slam (6 of anything)
500 non vulnerable, 750 vulnerable

grand slam (7 of anything)
1000 non vulnerable, 1500 vulnerable


Example 1.
1 making 2 = 2 x 20 = 40 points.
Add to that the bonus, a part-score of 50 in this case, and the total score is 90.

Example 2.
4 making 5 (vulnerable) = 5 x 30 = 150 points.
Add to that the bonus, 500 for a vulnerable game, and the total score is 650.

Defeated contracts

Any contract not vulnerable
50 per trick

Any contract vulnerable
100 per trick,

The penalty increases when you are doubled.
Any contract not vulnerable
1 down = 100
2 down = 300
3 down = 500
4 down = 800 and so on in increments of 300.

Any contract vulnerable
1 down = 200
2 down = 500
3 down = 800
4 down = 1100 and so on in increments of 300.

Try using our bridge score calculator to see how it works!


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