Perhaps the official designation should be Dave Keen's Two Bids, since the concept and conventional method was devised by Mr. Dave Keen of Mercyside, United Kingdom. Greater Merseyside is a term for the sub-region of North West England that includes Merseyside County and Halton.

Parameters of the Concept

This is the designation for a full system of Two Bids, which can be played either as weak or strong. In general all Two Bids show either a Strong Two in that suit, or Weak Two in the higher-ranking suit. An opening of 2 Spades constitutes an exception and may be played Tartan style (see: Tartan Two Bids). The 2 Clubs and 2 Hearts bids include strong balanced.

The following schematic shows the general meanings given to each opening Two Bid:

2 : Either a strong holding, possibly balanced;
  or a Weak Two bid in Diamonds (the suit above) with at least a good 5-card plus suit with major honors;
  or else a 6-card suit in Clubs, which is an optional understanding.
   
2 : Weak Two bid in Hearts (the suit above);
  or Acol Two in Diamonds. An Acol Two Bid may be made in Diamonds, Hearts, or Spades. It shows a holding with insufficient game-forcing strength, but worth about 9 playing tricks. It generally shows a single suited hand with a strong suit, though may be two suited from time to time. The bid is forcing for one round and promises a rebid.
  or the bid shows 19-20 high card points and No Trump distribution.
   
2 : Weak Two Bid in Spades (the suit above);
  or Acol Two in Hearts. An Acol Two Bid may be made in Diamonds, Hearts, or Spades. It shows a holding with insufficient game-forcing strength, but worth about 9 playing tricks.
  or shows 21-22 high card points and No Trump distribution.
   
2 : Acol Two in Spades. This opening bid on the two level is an exception in the system of Dave Keen in that it does show Spades and another unspecified suit. The bid can be either strong (about 9 playing tricks), or weak values between 4-9 points.
  or shows a 5-5 distribution in Spades and an unknown second suit.
   
2 NT: Promises a 5-5 distribution in Hearts and an unknown second suit. Range is 4-9 points.

Although described as a full system of Two Bids, there are no definite guidelines as to the responses by the partner. Therefore a solid partnership agreement is essential, which will also depend on and be defined as to whether there has been an immediate or indirect overcall or whether the Weak Two Bid itself is an overcall. Generally the first response of 2 No Trump is treated as a game inquiry and the second rebid of a suit may establish the trump suit.

All opening Two Bids are forcing for one round. The partner may not pass, but will attempt to conserve as much bidding space as possible so that the opener can clarify his holding. Therefore the employment of jump bids should be carefully considered. All first responses are also forcing for one round.

Defense methods are also usually defined by the partnership agreement, and one alternative method is that a bid of the next higher-ranking suit is defined as a Takeout Double whereas the double is defined as penalty.

 

 

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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