Duplicate Bridge Explained
Duplicate is the format played in clubs and tournaments worldwide. By having every table play the same pre-dealt hands, it strips out the luck of the deal and turns bridge into a fair contest of skill.
The Big Idea: Remove the Luck
In a casual game, a lot comes down to the cards you are dealt — pick up four aces and you will probably do well whoever you are. Duplicate bridge removes that luck almost entirely. Every pair plays the same hands as every other pair sitting in the same direction, so a good result is one where you did better with your cards than other people did with theirs.
That comparison is the whole point. You are not really trying to make your contract in isolation; you are trying to outscore the field on the same deal. It is what makes duplicate fair enough to run as a genuine competition, from a friendly club night to a world championship.
How the Cards Are Kept the Same
The mechanism is a simple plastic tray called a board. Each board holds four pockets — North, East, South and West — and once a deal is placed in it, the cards never get shuffled together again.
How a board works
Because you keep your own cards in front of you rather than pooling them in a trick, the deal survives untouched and the next table picks up exactly what you held. The board also shows the dealer and vulnerability, so those stay identical too.
Movements: Who Plays Whom
A duplicate session uses a planned movement so that, over the evening, pairs and boards circulate to give a fair spread of opponents. Typically the North–South pairs stay seated while the East–West pairs move to the next table after each round, and the boards move the other way. You do not have to understand the choreography — the director sets it up and tells you where to go — but it is what lets a dozen pairs all play the same boards.
Scoring: Matchpoints and IMPs
Because results are compared, duplicate uses its own scoring on top of the normal trick and bonus scores. There are two common methods.
Matchpoints
You score against every other pair on each board: a top for the best result, a bottom for the worst. Frequency matters more than size — beating the field by 10 points scores the same as beating them by 1000.
IMPs
International Match Points convert the raw point difference onto a sliding scale. Size matters — bidding a vulnerable game or slam others miss is hugely rewarded. Used in teams play.
Most club pairs events use matchpoints; team events use IMPs. The scoring method subtly changes strategy — at matchpoints an overtrick can be precious, while at IMPs the safety of your contract matters far more — but you can play happily for months before that distinction affects your decisions.
Duplicate vs Rubber Bridge
Rubber bridge is the traditional home game, played for a “rubber” of two games with whatever cards you are dealt. Duplicate is its competitive cousin. The bidding and play are identical; everything else is about fairness and comparison.
The key differences
If you have only ever played at home, the move to duplicate is smaller than it sounds — see contract bridge explained for how the underlying game stays the same, and our online bridge guides for where to try duplicate from home.
Key Takeaways
- Every table plays the same pre-dealt hands, so luck is largely removed.
- Deals are preserved in boards; you keep your cards in front of you.
- A movement circulates pairs and boards; the director runs it.
- Scoring is by matchpoints (frequency) or IMPs (size).
- The bidding and play are identical to rubber bridge — only the scoring differs.
Related Guides
Frequently Asked Questions
Duplicate bridge is the competitive format used in clubs and tournaments. Every table plays the same pre-dealt hands, kept intact in boards, so your result is judged against everyone else who held the same cards rather than on the luck of the deal.
On top of the normal trick and bonus scores, duplicate compares results. Matchpoints award a top for the best result on each board and a bottom for the worst; IMPs convert the raw point difference onto a sliding scale. Clubs mostly use matchpoints.
A board is a tray with four pockets, one for each hand. The deal is placed in it once and replayed at every table without being reshuffled, which is how all tables get the identical cards.
The director runs the session: they set the movement that circulates pairs and boards, keep time, and are called to rule on any irregularity. Calling the director is routine and never considered hostile.
The bidding and play are identical, so it is no harder to learn. What changes is that every deal is compared with the field, which rewards consistent good decisions and makes the game a fairer test of skill.
Yes. Several platforms run duplicate-style games and tournaments where the same boards are played by many pairs, then scored by matchpoints or IMPs. See our online bridge guides.