The concept of the Wenble conventional competitive method was developed by Mr. Michael (Mike) Wenble and licensed by the English Bridge Union in the mid-1970s. This information has been contributed to Bridge Guys by Mr. Paul M. Wrigley as of November 2013, and to whom we express our gratitude for his contribution.

Mr. Michael Wenble together with Sally Brock have published No-Trump Bidding of the Master Bridge Series in September 2005, which has been published by Cassell Reference, ISBN-10: 0304368067 / ISBN-13: 978-0304368068.

Principle Behind the Concept

Following a 1 Club or 1 Diamond opening bid by the opposing side the intervenor is able to enter the auction when holding certain combinations, which indicate strongly that any competitive bid may result in a positive score or at least a more favorable score.

The outline below explains the meanings of the overcalls:

Opener		Intervenor		Meaning
1/		2 NT		Promises Hearts and the unbid Minor suit.
		Cuebid		By either Minor suit opening the cuebid promises Spades and the unbid Minor suit.
		Jump Cuebid		Promises both Major suits.

Continuations

Any and all continuations are a matter of individual preference and constitue an individual partnership agreement.

If you wish to include this feature, or any other feature, of the game of bridge in your partnership agreement, then please make certain that the concept is understood by both partners. Be aware whether or not the feature is alertable or not and whether an announcement should or must be made. Check with the governing body and/or the bridge district and/or the bridge unit prior to the game to establish the guidelines applied. Please include the particular feature on your convention card in order that your opponents are also aware of this feature during the bidding process, since this information must be made known to them according to the Laws of Duplicate Contract Bridge. We do not always include the procedure regarding Alerts and/or Announcements, since these regulations are changed and revised during time by the governing body. It is our intention only to present the information as concisely and as accurately as possible.