Practice on Cuebids
Practice borderline game decisions where one side has a fit and competition removes normal invitation space.
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Systems
Last updated
2026-07-31
What is a Maximal Double?
A Maximal Double is a game try in a competitive auction. The partnership has found a major-suit fit, the opponents compete at the three level in the suit directly below that major, and there is no room left for an agreed suit game try.
Double becomes the invitation. Bidding three of the agreed major directly becomes competitive.
Double as game try
- Spades are agreed and the opponents have bid 3.
- There is no suit between 3 and 3 available for a game try.
- Double is a Maximal Double: an invitation to 4, not a penalty double in normal style.
The heart-suit version
- The same pattern with hearts: 3 is the suit directly below 3.
- Double is the game try; a direct 3 would be competitive.
Competitive raise versus game try
Without Maximal Double, opener has a problem. Bidding 3 could be only competitive, or it could invite game. Maximal Double solves this by assigning the stronger message to double and the competitive message to 3.
Responder evaluates the raise. With a minimum raise, responder usually signs off in three of the major. With a maximum raise and useful cards, responder bids game.
Competitive three of the major
- Because double is available as the game try, 3 is competitive.
- Partner should not raise to game without unexpected extras.
When it applies
Maximal Doubles apply only in specific auctions. The partnership must have a fit, the opponents must have taken away the normal game-try space, and the double must not be needed primarily for penalties.
When the enemy suit is lower, space remains: a new suit below three of the agreed major works as a game try under the partnership method, and most pairs then keep double penalty-oriented. Because opponents may otherwise read the double as penalty, a Maximal Double may require an alert depending on local regulations.
It is most common in major-suit fit auctions. Minor-suit versions and broader competitive doubles are possible but need explicit agreement.
- The partnership has found a major-suit fit.
- The opponents bid the suit directly below three of the agreed major.
- Double is cooperative and invitational.
- A direct three of the agreed major is competitive.
Space remains, so no Maximal Double
- Clubs are not directly below spades, so 3 and 3 are still available as agreed suit game tries.
- Here 3 is a help-suit try under that agreement; most pairs keep double penalty-oriented in this auction.
Hand examples
The same fit can produce two very different auctions depending on whether opener is competing or inviting. After the double, responder makes the final decision.
Use Maximal Double
- After 1-(2)-2-(3), sixteen points and a singleton heart are too much for a purely competitive 3.
- Double invites partner to choose between 3 and 4.
Bid three spades competitively
- This is a legitimate distributional minimum opening that wants to compete but has no clear game try.
- A direct 3 keeps the auction alive without overstating strength.
Responder accepts the try
- After 1-(2)-2-(3)-X, this is a maximum raise: an ace, a working spade honor, and no wasted heart cards.
- Responder bids 4 rather than signing off in 3.
Common mistakes
- Treating the double as penalty in a standard Maximal Double auction.
- Forgetting that three of the major is only competitive when double is the game try.
- Using Maximal Double when no fit has been established.
- Applying it in auctions where a normal game-try suit is still available.
FAQ
Is a Maximal Double penalty?
Usually no. In agreed Maximal Double auctions, double is a cooperative game try.
What does three of the agreed major mean when Maximal Double applies?
It is usually competitive, because double has taken over the invitational meaning.
Does Maximal Double require a fit?
Yes. The classic use is after the partnership has already found a major-suit fit.