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The Romex system is a contract bridge bidding system designed by the Mexican bridge expert George Rosenkranz.[1] 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[edit]

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 checkback convention to ask opener to further describe his hand.

Mexican two diamonds[edit]

This opening indicates one of four hands:

  • a balanced hand with 21-22 points and seven controls
  • a balanced hand with 27-28 points and 10 controls
  • an unbalanced game-forcing hand with diamonds as the longest suit or
  • a three-suited game-force hand.

Other calls[edit]

One-level and 2 openings are as per Standard American with 3+ minors and 5+ majors and limited by the failure to open one notrump.

Romex employs special asking bids in lieu of cuebidding, and for slam investigation.

References[edit]

  1. ^ Francis, Henry G., Editor-in-Chief; Truscott, Alan F., Executive Editor; Francis, Dorthy A., Editor, Sixth Edition (2001). The Official Encyclopedia of Bridge (6th ed.). Memphis, TN: American Contract Bridge League. p. 392. ISBN 0-943855-44-6. OCLC 49606900. 

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