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
500 (card game) made. The breach call may be made before or after the contracting team picks up the kitty, but must be made before game play starts. Typically, a breach occurs at one trick more than is actually necessary to break the bidding team’s contract. In other words, 5 tricks in a 7 trick bid, 4 tricks in an 8 trick bid, 3 tricks in a 9 trick bid, 2 tricks in a 10 trick bid. However, for misère, open misère, and double misère a breach always occurs at 3 tricks. A breach call can result in three different scenarios: -Win/Lose: If