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 to game leave less room for slam investigation, they imply an absence of slam values and therefore discourage more bidding. In addition, on weaker (or limited) hands fast arrival has a pre-emptive effect on the opposition and minimizes the information they might otherwise exchange. Stated conversely as the principle of slow arrival, the approach leaves more bidding space for stronger hands to explore for slam or choose the optimum game contract. 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