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The Romex system is a contract bridge bidding system designed by the Mexican bridge expert George Rosenkranz. Key features of Romex are the multiple meanings attributed to certain bids, namely the ''Dynamic one notrump'' and the ''Mexican two diamonds''. ==Dynamic one notrump== The dynamic one notrump opening indicates either: *a balanced or unbalanced hands in the range of 19-21 high card points (HCP) and six controls, or *an unbalanced hand just short of a 2 opening. The most common responses to the dynamic one notrump opening are: *2 – negative (0-5 HCP) *2 – 6+ HCP, game force. Higher level responses indicate control count. A consequence of the use of the dynamic notrump is that the 1NT rebid by opener becomes wide-range (typically 12-16 hcp). With game invitational values or better, responder reacts to such a rebid with a 2 convention to ask opener to further describe his hand. 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「Romex system」の詳細全文を読む スポンサード リンク
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