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Unusual vs. unusual is a competitive bidding convention used in contract bridge by the opening side after an opponent has made an showing two suits (e.g., a Michaels cuebid or an unusual notrump overcall. ==Countermeasures== The opening side may compete against the opponent's intervention; actions depend upon whether one or both of the opponent's suits are specified: ;Both suits are specified * A bid in partner’s suit or a new nonadverse suit is competitive without showing game interest. * A cuebid of the opponents’ lower ranking suit shows an invitational limit raise of partner’s suit with a likely 5-card side suit in the other nonadverse suit. * A cuebid of the opponents’ higher ranking suit shows a game forcing raise with a likely 5-card side suit in the other nonadverse suit. * A double shows the ability to penalize at least one of the opponent’s two specified suits. Any subsequent double by the partnership is for penalty. ;Only one suit is specified * A bid in partner’s suit or a new nonadverse suit is competitive without showing game interest. * A cuebid of the opponents’ known suit shows a raise of partner’s suit. The raise is invitational limit raise or stronger. The cue bid raise implies a 5-card side suit (probably, not the overcaller’s unspecified second suit). * A double shows the ability to penalize at least one of the opponent’s implied suits. Any subsequent double by the partnership is for penalty. 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「Unusual vs. unusual」の詳細全文を読む スポンサード リンク
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