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
Bridge Battle of the Century Bridge Battle of the Century The "Bridge Battle of the Century" was the name given to a celebrated 1931–1932 contract bridge challenge match between Ely Culbertson and Sidney Lenz and their partners. The match pitted Culberson's bidding system, which had been laid out in his widely selling "Contract Bridge Blue Book" of 1930 and was sweeping the bridge world, against the Official System which had been developed by a group calling itself the Bridge Headquarters, of which Lenz was a member along with Milton Work, Wilbur Whitehead, Edward Valentine Shepard, George Reith, and others. The two camps, Culbertson and the