This conventional defense method was devised by Mr. William (Willie) Jago of Melbourne, Australia. A complete outline can be found in his publication MOST, which describes in detail his Standard System MOST. His publication was first published in the year 1994/1995 and is an acronym of the letters Most Oriented Standard, ISBN: 0646221612, published privately in Docaster, Victoria by the author.

The fundamental principle of his devised concept is that an immediate double following an opening bid of No Trump by the opposing side promises a one-suited holding in any suit. The other features of the competitive defense method is as follows:

Opponent   Intervenor Meaning
1 NT     The range of the No Trump opening is generally considered to be in agreement with the Acol bidding system, and therefore promises values between 12-14 points with a distributional holding.
    Double Promises a one-suited holding with values sufficient to enter competitively the auction.
    2 Promises a 5-card plus length in Clubs plus at least a 4-card plus unspecified suit.
    2 Promises a 5-card plus length in Diamonds plus at least a 4-card plus unspecified suit.
    2 Promises a 5-card plus length in Hearts plus at least a 4-card plus unspecified suit.
    2 Promises a 5-card plus length in Spades plus at least a 4-card plus unspecified suit.


No information is available as to continuations and any additional information would be greatly appreciated.



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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