Bridge

The card game so mentally demanding that scientists have actually studied whether playing it regularly helps keep an aging brain sharp.

Cheat Sheet

Bridge is played by four players in two fixed partnerships, sitting across from each other at the table.
Each hand starts with "bidding," where partnerships compete to declare how many tricks they think they can win, and in what trump suit (if any).
The partnership that wins the bidding becomes the "declarer" side and tries to win at least the number of tricks it bid.
A "trick" is one round where all four players play one card each; the highest card of the led suit wins it, unless trumped.
One partner's cards (the "dummy") are laid face-up on the table after bidding ends, visible to everyone, and played by their partner.
Bridge is widely considered one of the most cerebral card games ever devised, with a huge body of competitive strategy and convention systems.

The 60-Second Version

Bridge is played by four people in two fixed partnerships, sitting across the table from each other, using a standard 52-card deck dealt 13 cards to each player. Every hand begins with "bidding," an auction where partnerships compete to declare how many tricks they believe they can win and in which suit (or no suit at all) will act as trump. Whichever partnership bids highest becomes the "declarer" side, and one partner's hand — the "dummy" — is laid face-up on the table for everyone to see, played entirely by the declarer. Play then proceeds in "tricks": each of the four players plays one card, and the highest card of the suit led wins the trick, unless someone plays a trump card instead. The declarer's side tries to win at least as many tricks as they bid; the other pair (the defenders) tries to stop them.

The Long Version

Partnerships and the Deal

Bridge fundamentally distinguishes itself from most card games by being a true partnership game rather than every player for themselves — each of the four players is fixed with the person sitting across from them for the entire hand, and success depends as much on communicating effectively with your partner as on the cards themselves. A standard deck is dealt out completely, 13 cards to each of the four players, so every card in the deck is always in play, unlike games that use a smaller hand size from a larger deck.

Bidding: The Secret Language

The bidding phase, called "the auction," is where bridge's real strategic depth lives: players make bids not just to compete for the contract, but to convey specific information about their hand's strength and suit distribution to their partner, using a shared, prearranged system of signals called "conventions." Because these conventions are agreed upon in advance and must be disclosed to opponents (bridge has strict rules against secret private signals), a huge body of published bidding systems exists, and serious partnerships spend real time studying and refining a shared bidding language before ever sitting down to play.

Playing the Hand

Once bidding ends, the partner of the winning bidder (the declarer) lays their hand face-up on the table as the "dummy," and takes no further active role in playing it — the declarer plays both their own hand and the dummy's, effectively controlling two hands against the two defenders' one card each per trick. This structure is fairly unique among trick-taking games and creates a distinctive tactical puzzle: the declarer has full information about half of the missing cards (their partner's dummy hand) but must infer the rest from the bidding and how the defenders play.

A Game With a Following

Competitive bridge is organized internationally by bodies like the American Contract Bridge League and the World Bridge Federation, with structured tournament formats, rating systems, and a genuine professional and semi-professional competitive scene. The game has a particular reputation among prominent public figures — Warren Buffett and Bill Gates are famously regular bridge partners — and its complexity has made it a recurring subject of cognitive research into whether structured strategic games like bridge help maintain mental sharpness with age.

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Glossary

Trick: One round of four cards, one played by each player, won by the highest card of the suit led (or the highest trump).
Trump suit: A suit declared during bidding that outranks all other suits for that hand.
Dummy: The partner of the declarer, whose hand is laid face-up and played by the declarer.
Contract: The final bid a partnership must fulfill, stating a number of tricks and a trump suit (or no-trump).
Convention: A prearranged bidding signal partners use to share information about their hands within the rules.