An instructional French-language guide to competitive bidding in contract bridge, with particular attention to cue-bids and modern uses of doubles. The book is aimed at players who already understand basic bridge bidding and want more precise partnership agreements for auctions in which both sides are competing for the contract. It explains how cue-bids can be used to show strength, controls, or forcing values, and how doubles can carry meanings beyond simple penalty calls. Through examples and bidding sequences, the work helps readers distinguish cooperative, informative, and penalty-oriented calls and apply them consistently at the table. Its practical focus makes it suited to intermediate and advanced club players looking to refine their system and improve judgment in contested auctions.