Negative Doubles in Bridge: What Responder's Double Shows

Negative doubles is just the name given to a double made by responder.

What does a double show?

There is not a precise hand it shows, it is something that is a little bit flexible depending on the auction.

#1 - Often a negative double is used to show a 4 card major

This is the most important message of most negative doubles, and often it is the only thing a double shows. For example

The double by responder here conveys the message - I have hearts. That is all it shows, it does NOT show both unbid suits by standard. Although of course you can agree that with your partner, it is not what I would recommend.

This feature has led to the following auction for people

Compared with

In the first auction many partnerships play this as showing exactly 4 spades.

Contrast with the second auction where many partnerships play that as showing 5 spades.

Lastly take this example which I find lots of people make mistakes with

This should show exactly 4 cards in each of the majors. With one 4 card major only, just bid it.

#2 - Typically do not negative double if you have a 5+ card major, just bid it

To begin with, lets look at this hand

We do not double when we have a 5 card major, we just bid it. A double does not show a 5 card major - we aspire to show our hand. We do not want to pretend our 5 card major is a 4 card major, or else we will not arrive in our 5-3 fits!

I say typically, because the common way to play is that responder's first bid is forcing (see Is that bid forcing? Responder's first bid.). IF you are not strong enough to force, we can use a double followed by a bid, for example

Here we cannot bid 2♥ with so few points. It will drive the bidding too high, as it is forcing, we will end up on the 3 level at least. Instead we can start off with a double, and then later bid 2♥. That sends the message to partner "I was not strong enough to bid 2♥ the first time"

The full auction may be

I'll just briefly change topics for a moment to avoid confusing anyone, just to show that sometimes double then bidding is very strong, but that is when bidding in the first place is not forcing. For example

If we bid 1♠ the likelihood is it will go all pass and we play there. If we double first then bid, we are communicating "I was too strong to just do a non forcing bid the first time". The auction may continue

Now we have shown a strong hand with spades, and the auction can continue without the worry that partner will pass with say 6-9 points.

Overall

Negative double is just a word that means double by responder. The key idea is that it is not penalty (bridge decades ago was often played where all doubles of this type were penalty!).

The main message of the double is that it shows 4 cards exactly in the unbid major. This is a very useful and important thing to do in the bidding, very often our games are played in the contract of 4♥ or 4♠, or for part score battles we often win when we uncover a major fit.

The key thing that can go wrong is overusing negative doubles:

More on doubles: Takeout Doubles in Bridge: The Complete Guide · Support Doubles in Bridge: How and When to Use Them · Four-Level Doubles: What to Do Next · High level doubles - penalty, negative, takeout?

Read next: Takeout Doubles in Bridge: The Complete Guide · Support Doubles in Bridge: How and When to Use Them · Four-Level Doubles: What to Do Next

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