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
Euchre game variations by all players. The contractor is of course vulnerable however, and if he or she fails to take the number of tricks bidden, he or she loses that number of points. A player wishing to bid all eight tricks calls "shooter", and if successful gains not eight but 12 points. Score is kept on paper and the game is played to 31. A player bidding less than eight and subsequently winning all eight tricks will only score eight points. A somewhat popular three-handed variation exists. Players sit as though there is a "ghost player" in the fourth position. A hand