Contract bridge

Contract bridge, usually known simply as bridge, is a trick-taking card game for four players who form two partnerships, or "sides". The partners on each side sit opposite one another. Game play is in two phases: bidding and playing.

Scoring – duplicate bridge

In duplicate bridge, which is what is normally played in a club or tournament, each hand is scored by itself, and not as part of a rubber. This changes (and simplifies) the scoring as described above.

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In duplicate bridge, if the required number of tricks for the contract has been made, the pair gets a number of points for the tricks bid and the overtricks as described above (20 per trick above the book of six tricks in clubs/diamonds, 30 per trick in hearts/spades, 30 per trick plus 10 bonus in No Trump, possibly doubled or redoubled). If the number actually bid is enough to score 100 points or more, a game has been made, which scores 300 when not vulnerable and 500 when vulnerable. If it is lower, the score is not carried over to the next hand, but there is a 'part score' bonus of 50 points.

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The bonus for slam, the bonus 'for the insult' and the scores for downtricks and doubled overtricks are the same as described above.

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In duplicate bridge, in every series of four deals, the vulnerabilities of 'all vulnerable', 'none vulnerable', 'vulnerable against not vulnerable' and 'not vulnerable against vulnerable' will all occur once, in a predetermined order.

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