The Casey Two Over One Bridge Bidding System incorporates the 2/1 Game Force bidding system for major suit opening. This book also expands the Game Force system to partners holding 5 spades and an opening hand. The forcing response when R has 6-12p and a spade response is modified to show if O has 3-card spade support. The traditional 2/1 system is modified by the mechanics of a fast arrival convention to show game-level points. In addition, a simple worthless suit convention using a single bid is employed to show a worthless suit as opposed to the more complicated control system used in traditional 2/1.
For minor suit openings, the book presents a simple method for using reverses. The book also shows how to use the Jacoby Transfer mechanism to show R’s 5-card major. The book then shows how R can effectively use inverted minors to hamper the opponents’ bidding. The book next shows how to bid overcalls of a 4-card heart suit to hamper the opponents from finding their spade suit. The book outlines the Kantar slam bids and shows how to locate the trump Queen after a 4NT bid. Finally, the book shows how to improve slam bidding using the Minorwood convention.