Contract bridge grand slam exists. The modern game of contract bridge was the result of innovations to the scoring of auction bridge by Harold Stirling Vanderbilt and others. The most significant change was that only the tricks contracted for were scored below the line toward game or a slam bonus, a change that resulted in bidding becoming much more challenging and interesting. Also new was the concept of "vulnerability", making sacrifices to protect the lead in a rubber more expensive. The various scores were adjusted to produce a more balanced and interesting game. Vanderbilt set out his rules in 1925, and within
Contract bridge diagram Contract bridge diagram The diagram is typical of that used to illustrate a deal of 52 cards in four hands in the game of contract bridge. Each hand is designated by a point on the compass and so North-South are partners against East-West. Suit features include: The full deal diagram is usually drawn with North at the top, with the other hands following their normal compass orientation. For convenience and consistency, South is usually declarer, so that the reader can see the hand as if playing it; exceptions to this rule can occur when reporting deals from actual matches, but