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The game of bridge offers one player to open the auction. The game of bridge also offers the opponents of the opener to interfere, intervene, or overcall. This is a defensive action and is based on a devised and developed conventional defense method.
We have attempted to list several of these defense methods on this web page. We have attempted to list them in a semi-orderly fashion. We have also attempted to list defense methods to defense methods.
The reader, student, and visitor must please remember that these defense methods are only suggestions and recommendations, and that these defense methods do not always carry an official, or even semi-official designation.
Any bridge player wishing to add their defense method to this list can do so for the benefit of other bridge players. All contributions will be credited with the name of the contributor.
Bergen Impossible Three No Trump
Mr. Marty Bergen has suggested using a bid of 3 No Trump during the auction in order to
perform a sacrifice against the opponents, when it appears that the opponents have
a game contract in a suit.
Bergen Jump Cuebid as a Transfer to Three No Trump
Mr. Marty Bergen developed this conventional method to cover a certain situation which arises after an intervening overcall on the One Level, which is an important element to consider before implementing the jump cuebid as a transfer to 3 No Trump.
Bromad Convention
Very often every bridge partner will open the auction
with a Major suit only to hear his Left Hand Opponent make a Takeout Double. Besides being annoying, the auction has been disturbed, and the relay of information has developed some speed-bumps. In order to overcome this situation, the concept of BROMAD was created to indicate, according to the partnership agreement, certain holdings. This concept was developed by Mr. Marty Bergen, bridge player, bridge theorist, bridge author.
Common Sense Defense
This article, written by Marinesa Letizia, in the Bridge Bulletin published November 1997, presents a common sense and logical defense alternative to those situations, where the 1 No Trump opening has been overcalled and there is interference.
Copenhagen Convention
This conventional method was originated by Mr. John Trelde and Mr. Gert Lenk, both of Copenhagen, Denmark. The concept is a system of jump overcalls, which promises a two-suited holding after the auction has been opened by an opponent in a suit on the one level.
Defense Against Preemptive Openings
Defending against Preempts on the Three Level have encouraged bridge partnerships to devise several methods
to counteract and counter-attack, intending to share as much information as possible
with the limited bidding space available. Some of these partnership agreements are simple, sometimes radical,
methods and some have evolved into conventions of their own standing.
Defense Method Against DONT
This is a defense method to be employed by the responder of the No Trump opener after an immediate DONT-oriented double by the opponent. These guidelines to defend against a DONT-style double are suggestions only for a possible defense method.
Defense Method Against NAMYATS
The conventional method of preempting on the four level presents largely any competition. This suggested method allows the competition to enter the auction.
Defense Method to a Strong, Artificial Two Clubs Opening Bid
Mr. Alan Fraser Truscott, a prolific bridge writer and columnist for the New York Times, and theorist, devised a method for competing and interferring with the bidding sequence of the opponents, which would exchange information about the holdings. This method targeted mainly two-suited holdings, which could be shown with one bid on the two level. This method also proved to be a measureable calculation for the defenders to assess the possibility of a sacrifice.
Note: This method is also known as simply Truscott, but this designation does not define the original concept of Mr. Alan Fraser Truscott, who devised and originated several other defense methods, also against strong, artificial opening bids on the one level.
Fishbein Convention
This convention was devised by Mr. Harry Fishbein. The concept of the Fishbein convention allows the player directly following the preemptive opener to make a Penalty Double. The double is not a Takeout Double and the partner must pass this double.
Kleinman Defense Method to Multi 2 Diamonds Opening
This method of defense against a 2 Diamonds opening by the opponents, employing the Multi 2 Diamonds convention, was devised by Mr. Danny Kleinman, a bridge expert player, who together with Mr. Eddie Kantar devised the Kantar Kleinman Slam Force.
Liberty versus Multi
The origin of this defense method is unknown, but the concept could prove advantageous to bridge players. The Liberty defense method versus the Multi offensive method is employed when the opponents opening bid has multiple weak possibilities with no known suit.
Mathe Bids Against Strong, Artificial 1 Club Openings
This conventional defense method was developed by Mr. Lewis L. Mathe, also known as simply Lew, of Canoga Park, California, He was born in 1915 and died in 1986. He is also the originator of Mathe Asking Bids. The Mathe conventional bids are generally to be employed in the immediate seat following the strong, generally artificial 1 Club opening since the partner of the strong 1 Club bidder must respond with zero values. However, the Mathe conventional bids may also be employed in the fourth seat following a weak response by the partner of the opener.
MeckWell Escape Bids
The concept behind these so-called escape bids has been developed and devised by Mr. Eric Rodwell and Mr. Jeff Meckstroth. The concept behind this agreement comprises a so-called Escape System, which is employed after one pair has opened the auction with a bid of 1 No Trump or one pair has overcalled a suit opening by the opponents with 1 No Trump and the opponents have used the call of double for penalty.
Michaels Cuebid Defense Method
The continuances for the responder of the opener following an immediate Michaels Cuebid are presented. A Michaels Cuebid generally shows a two-suited holding. The responder can continue to compete by employing bids, which convey certain required information. This information can also be found on the website of Shelagh Paulsson of Quebec, Canada. This information is only preserved and archived on this site in .pdf file format for future reference.
Multi 2 Diamonds Defense Methods - Multi 2D Defense Methods
Version 1 - The origin of this defense method is unknown.
Version 2 - The origin of this defense method is unknown.
Liberty Double - The Liberty defense method versus the Multi offensive method is employed when the opponents opening bid has multiple weak possibilities with no known suit. This defense method is designed to increase the possibility of penalties while also providing, at the same time, some blocking bids.
Responses to a Takeout Double by your Partner
The responses to a Takeout Double are dependent upon the situation. For example, has the responder passed or has the responder bid over the Takeout Double. The more preferred responses are presented to the bridge player and these responses are based upon the holding itself.
Sandwich No Trump
The origin of this conventional method is unknown, but is closely aligned and related to the conventional methods of Michaels and Unusual No Trump in that the defense method also communicates to partner a particular distribution.
Suction Redwood
The origin of this conventional defense method is unknown. The Suction Redwood conventional defense method is employed against an immediate overcall of No Trump by the opponent on the one level.
Unusual No Trump
This conventional defense method was devised by Mr. Alvin Roth and Mr. Tobias
Stone. The Unusual No Trump is a conventional defense method
designed to show two suited hands in competitive situations with one bid. The logic
and reasoning behind the convention is to consume bidding space and to describe to
your partner the distribution of your hand as quickly and as accurately as possible.
Defense Methods to Unusual No Trump Overcall
There are several defense methods, which the responder of the opener can employ to continue to inform partner about his holding. Such defense methods to defense methods employed in competition are generally considered a matter for the partnership to establish. The attempt is made to present possible methods as a foundation.Defense Method to Unusual No Trump Overcall Following a Major Suit Opening - This possible method is presented in .pdf file format and will be automatically opened by the browser.
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.
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