Most of the books about bidding system do not discuss the competition bidding in details. We need a separate book which focuses on competition bidding. There are few selections, the one, which may probably be the best one, I recommend to you is The Complete Book on Overcalls in Contract Bridge by Mike Lawrence (ISBN: 978-1897106457). The book states almost all the situations relatively to overcalls. It has three part: i) Overcalls; ii) Responding to an Overcall; iii) Continuing the auction. The style of the book is based numerous examples attached with explanations. For each part as well has the end of the book, there is a separate quiz chapter to test what the readers have learned. This is a rather authoritative book that has referred by authors of other books. The only "disadvantage" of the book I can think of is the lacking of theory, the author only wrote out his idea and experience.
If you want to improve your competition bidding skill, I recommend this book to you.
中文版:
WeWeWeb Bridge的叫牌引擎大至可以分成兩個子系統: 沒有或有受天干擾的叫牌情況. 前者相對簡單及靜態, 在大部分有關叫牌系統的書籍都有詳細的討論. 不過, 在橋牌桌上, 對手大多數都不會乖乖地靜坐著, 讓你慢慢叫到最有利的合約. 因此, 玩家要有心理準備大部分的叫牌過程都是和對手爭叫. 制訂爭叫系統的難處是每組對手都有可能用一種唔同既叫牌系統, 要每個叫牌系統都制訂一個專門的爭叫系統是不可行的. 所以我們要找一個更具彈性的爭叫系統.
由於市面上有很多叫牌書籍都輕輕帶過爭叫那部份, 我們需要找一本專門討論爭叫參考書. 在市面上, 專門談論爭叫的參考書數量很少, 今次我介紹的這本 (很可能是在這本書是最好的一本)叫Overcalls in Contract Bridge (ISBN: 978-1897106457), 由Mike Lawrence 著作. 這本書談論了很多有關蓋叫的資料, 十分詳細. 本書分為三個部分：一）蓋叫; II）回應蓋叫;三）繼續蓋叫。本書的主要內客主要是談論大量例子, 加上每部分及書本結尾都有一個練習章節, 供讀者測試自己的所學到的. 這本書可說是很有權威,有一些作者還引用了這本書的內容. 最後說一下"缺點": 這本書沒有任何理論, 作者只跟據自身的經驗及理解而談論.
如果閣下對爭叫還覺得有不足之處, 我建議這本書給你.
