How does bridge scoring work?
Through a bidding auction that sets a contract, followed by play to fulfil it — and the scoring rewards bidding accurately far more than taking extra tricks, which is what makes the auction the heart of the game.
The structure. Four players in two partnerships. Each hand has two phases:
The auction. Partnerships bid to declare how many tricks above six they will take, and in which trump suit or in no trumps. A bid of "four hearts" commits to taking ten of the thirteen tricks with hearts as trumps. Bidding is competitive, with each bid higher than the last, and ends when three players pass.
The play. Thirteen tricks are played. The declarer plays both their own and their partner's hand, which is exposed on the table as the dummy — a feature unique to bridge and the reason the game rewards planning.
How scoring works, in outline:
Making the contract scores points per trick bid, at different rates by suit: clubs and diamonds (minors) score less per trick than hearts and spades (majors), and no trumps scores most.
Game bonuses. Reaching a threshold of contract points in one hand scores a substantial bonus. This is why certain contracts — four of a major, three no trumps, five of a minor — are the targets partnerships aim for, and why bidding stops at those levels so often.
Slam bonuses for contracting twelve tricks (small slam) or all thirteen (grand slam), which are large.
Penalties for failing, increasing sharply if the contract was doubled, and increasing again when vulnerable.
Overtricks score little. Taking eleven tricks on a contract of ten adds a trivial amount compared with the bonus for having bid eleven. This is the central point: the skill is in bidding to the right level, since underbidding a good hand wastes it and overbidding is penalised.
Vulnerability raises both bonuses and penalties, and changes how aggressively it is worth bidding — a strategic layer with no equivalent in most card games.
Duplicate bridge removes luck by having many tables play identical hands and comparing results.