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
American Contract Bridge League players review and expand upon their knowledge of the game. The ACBL consists of 25 Districts. Each District elects a District Director (DD) who serves a three-year term on the ACBL Board of Directors. Clicking on the district number brings up the web site for that District. Clicking on the Report brings up the District Director report. American Contract Bridge League The American Contract Bridge League (ACBL) is the governing body for contract bridge in the United States, Mexico, Bermuda and Canada and is a member of the World Bridge Federation, the international bridge governing body. It is the largest