DONT System Opening Bids

The student can find Mr. Mark Donovan online. The student must log-in in order to view the contents. The DONT System opening bids were devised by Mr. Mark Donovan of Kingston, Ontario, Canada, and posted online in February 2008, Version 2.0. As written by the author this particular system is illegal to play in any ACBL and WBF events since the primary purpose of this system is completely destructive.

The system employs a forcing pass feature. This information has also only been preserved and archived on this site in .pdf file format for future reference.

Note: Mr. Mark Donovan, together with his wife Shona, have developed other bidding systems. One bidding system is titled Shark System Notes and is dated January 24, 2007. This is Version 1.1. Another bidding system is titled Super Spade and is dated July 2007. This is Version 2. Another developed bidding system is titled DONT, authored by Mr. Mark Donovan, and dated February 2008, Version 2.0. (Note: The author, in the introduction, states firmly that this bidding system is illegal to play in ACBL and WBF events.

Opening Bids Only

Bid Strength Meaning
Pass:   Forcing to 1 Club, and shows one of:
    1. any 3-3-3-4 holding, or
    2. a 22 plus points holding, or
    3. 16-21 points and a single-suited holding, or
    4. 0-10 points and single-suited holding.
1 : 0-10 points Shows Clubs and a higher-ranking suit, or
  16-21 points shows Clubs and a higher-ranking suit.
1 : 0-10 points Shows Diamonds and a higher-ranking suit, or
  16-21 points shows Diamonds and a higher-ranking suit.
1 : 0-10 points Shows Majors, or
  16-21 points shows Majors.
1 : 0-10 points Shows Spades, or
  16-21 points shows Spades.
1 NT: 11-15 points Shows a single suited relay to 2 Clubs.
2 : 11-15 points Shows Clubs and a higher suit.
2 : 11-15 points Shows Diamonds and a higher suit.
2 : 11-15 points Shows Majors.
2 : 11-15 points Shows Spades.
2 NT: 0-10 points Single suited relay to 3 Clubs (7-card suit)
3 : 0-10 points Shows Clubs and a higher suit.
and so on and so forth.



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.