After an opening, a Takeout Double by partner and a two- or three-level raise by the partner (responder) of the opener, the partner (intervenor) of the Takeout Doubler can also double, thereby providing and communicating descriptive information about his hand. This is known as a Responsive Double.
The importance of distinguishing this double from other doubles is the fact that the partner of the opener has supported the suit of his partner via a raise. In the case that the partner of the opener bids another suit after the Takeout Double, then other interpretations of the double in the Fourth Seat may take on new meanings.
The concept should generally be understood according to the following guidelines:
1. If the opening is a Major suit, then the Responsive Double shows, after the Takeout Double, scattered values and better distribution in the Minor suits. Otherwise it would be more prudent to support the Takeout Double of the partner when holding support in the unbid Major suit. 2. If the opening is a Minor suit, then the Responsive Double shows, after the Takeout Double, scattered values and better distribution in both Major suits and wishes the partner, who has executed the Takeout Double, to choose the better Major suit.
This may sound confusing, but the following illustration should clarify this concept:
Q873 Q1097 7 Q852
The double of North is a Take-Out Double, but the double of South is a Responsive Double. South is too weak to cuebid the Diamonds, and South does not want to simply guess which suit North, his partner, would prefer. See Responses To Take-Out Double. Therefore, South doubles and informs his partner that he has both Major suits. The Responsive Double. If South had a 5-card or longer suit, then South would just bid it.
If South were to cuebid the Diamonds, that would force his partner to bid on the three level, and their contract might possibly be only on the two level. That is why Mr. Fielding-Reid came up with this Responsive Double. The Responsive Double can not equal a Penalty Double in this situation, and should not be construed as a penalty double.
873 72 QJ107 QJ105
South can not support the Spades, the suit of North, and must show the the two Minor suits. South executes the Responsive Double to show and communicate to North that he holds both Minor suits. North must now bid a Minor suit if West passes or possibly pass if West raises to three Hearts.
How many High Card Points
The high card point range will differ according to the individual partnership agreement. After the opponents settle on one suit, the shape of the hand also begins to play an important role. Remember also, that South may pass after his Right Hand Opponent makes a bid. The high card point range also changes with the level of the auction. So we have:
Partnership Agreement Shape of the Hand Level of the Auction High Card Points
These four elements must enter into the decision of South. All four elements must be considered. It is conclusive that most high card points are in the other three hands, and that South will be weak. Therefore, a Responsive Double of 2 Clubs or 2 Diamonds would require a minimum of 6 points (distributional points added), and a Responsive Double of 3 Clubs or 3 Diamonds would require a minimum of 9 points (distributional points added).
It is possible that the distribution of the holding of South could be such, that South, instead of executing the Responsive Double, cuebid the suit of the opponents to indicate a much stronger holding. With such a holding, the high card points do not play any important part of the auction as much as the power of the distribution and shape of the holding.
QJ9873 QJ10987 7
In order to show this very distributional holding, South must cuebid the Minor suit of the opponents. By partnership agreement, North must consider game in a Major suit. The reason behind the cuebid is the logic that the lead must come up to the declarer through the stronger hand, which opened. Whether or not this can also be a partnership understanding, if the opening is a Major suit, depends on the partnership agreement.
To illustrate this use of the Responsive Double, the following hand is from the 1997 World Team Championship between France and the United States.
North East South West
32 K743 Q5 KQJ103
J4 A985 KJ1043 A5
AK965 QJ62 6 976
Q1087 10 A9872 842 Pass 1 1 3 Preemptive Double
The Responsive Double by North shows both unbid Suits, Hearts and Clubs
The Responsive Double of North meets all the requirements. North has length in the two unbid suits, and also the strength required to make the Responsive Double.
If a Responsive Double is called after a raise of the Major suits, more information has already been exchanged than had a Minor suit been opened and raised. The Responsive Doubler knows the suit of his partner, the Takeout Doubler. The Responsive Doubler has therefore more descriptive information about the hand of his partner. The minimum requirement of high card points is approximately the same, but the shape of the hand becomes more important. How many cards in the Major suit of the opponents does the possible Responsive Doubler have? Could his partner, the Takeout Doubler, possibly be void?
In general, most bridge partnerships agree that there is a Responsive Double through to 4 Diamonds. The partnership should come to a general understanding and include this in the individual partnership agreement. Also, there should be agreement as to whether a Responsive Double is valid over Weak Two Bids and stronger Preempts.
In the original concept of the Responsive Double, a double by the advancer is responsive only when the opponents have opened on the one-level and raised that particular suit. However, other bridge partnerships also use the Responsive Double when the partner has made a simple overcall in a suit. Modern Bridge Conventions, a bridge book authored by Mr. Bill Root with Mr. Richard Pavlicek, published in 1995, offers a list of bidding sequences, in which a double by the partner is not a Responsive Double.
Opener 2. Seat 3. Seat 4. Seat 1 Double 1 Double Third Seat has bid a new suit; the double becomes optional.
Opener 2. Seat 3. Seat 4. Seat 1 2 3 Double Second Seat has made a Jump Overcall.
Opener 2. Seat 3. Seat 4. Seat 2 Double 3 Double Opener has opened with a Preempt.
Opener 2. Seat 3. Seat 4. Seat 1 1 NT 2 Double Second Seat has overcalled in No Trump.