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
Singaporean bridge Singaporean bridge Singaporean bridge is a re-invention of sorts of the traditional game of contract bridge. This version of bridge derives its name from where it is believed to have been invented, Singapore, and just like its traditional predecessor, there are variations in the rules. It is also known as floating bridge. Essentially, a deck of 52 cards is used, and 4 hands of 13 are dealt. Players assume fixed seats, but unlike contract bridge, the partners are not determined at the outset by virtue of north-south or east-west — they are determined at the end of the bidding. There