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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク XYZ convention ： ウィキペディア英語版 XYZ convention XYZ is a bidding convention in contract bridge. == Using the convention == After opener's one of a suit (X), partner's one of a suit response (Y) and opener's 1-level rebid (Z) (a very common sequence), 2 from opener's partner forces 2 from opener. Holding a weak hand with diamonds, one can now pass. Other bids are invitational, describing also the nature of the hand. A 2 rebid by responder, however, is game forcing with any hand. Responder may also jump to 3 of any suit (except 3, which is signoff) to show a game-forcing hand with a good suit or, if the jump is in one of opener's suits, two of the top three honors. Although it is mandatory in the XY Notrump form of the convention to complete the relay 2 to 2, when Z was a suit, opener may be unlimited. In such a case it is acceptable, if opener has too good a hand to risk being dropped in 2 to bypass the relay and make a (forcing) bid. It is also customary to retain the convention in the face of certain competitive actions, for example after a double by opener's LHO, or a negative double by partner. After an overcall by RHO, assuming that the bidding has not gone past 1NT, the convention is still on (for example after 1 pass 1 1 X where X is a Support Double). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「XYZ convention」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.