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
Principle of fast arrival Principle of fast arrival In the game of contract bridge, the principle of fast arrival (also known as the principle of slow arrival) is a bidding treatment widely used in game forcing auctions whereby: Historically, constructive bidding was based on the idea that the stronger a responding hand, the higher a bid, or jump, was made. In modern bidding styles, a slower progression of bids was deemed a more scientific method of investigating for the best contract. The principle of fast arrival was a logical product of this newer style and inverted previous meanings on the premise that since jumps