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
Contract Bridge for Beginners Contract Bridge for Beginners Contract Bridge For Beginners is a book written by Charles Goren on the rules and basic strategies of contract bridge. First published by Simon & Schuster Inc. of New York in 1953 and by Eyre & Spottiswoode of London in 1959, each has been reprinted numerous times. The book contains an introduction to the then relatively new bidding system condensed from Goren's historically significant 1947 book "Point Count Bidding in Contract Bridge". "Contract Bridge for Beginners" is a "competent but unimaginative text" with a bidding system that is "of little practical use today" having been superseded