Grand slam force Grand slam force The Grand Slam Force is a bidding convention in contract bridge that was developed by Ely Culbertson in 1936. It is intended to be used in cases where the combined hands of a partnership are so strong that a slam (winning at least 12 tricks) is a near-certainty and a grand slam (winning all 13 tricks) is a possibility. It allows one partner to gain information on the quality of trumps in the other partner's hand. When this convention is in force, a bid of 5NT (five notrump), when it does not conflict with other conventions used
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