Practice on Cuebids
Practice constructive auctions where responder has to decide whether to sign off, invite, force, or search for a delayed fit.
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Systems
Last updated
2026-07-31
What is Wolff Signoff?
Wolff Signoff is used by responder when opener jumps to a strong 2NT rebid, often showing about 18-19 balanced. Responder’s artificial 3 asks opener to help find a safe part-score or a better strain below game. It covers two kinds of weak hand: a long suit of responder’s own, and a hand that wants to escape into a minor.
The classic problem is simple: responder bid at the one level with a weak hand and a long suit, then opener jumped to 2NT. Without a tool, responder may be stuck in a poor notrump contract.
The Wolff 3 relay
- 2NT shows a strong balanced opener by agreement.
- 3 is artificial Wolff Signoff, not natural clubs.
- In classic Wolff, 3 shows a weak hand: often a long suit of responder’s own, but also the minor-suit escapes described later.
Opener responses
A common Wolff agreement is that opener shows three-card support for responder’s major when available. Without that support, opener bids 3 as an artificial relay, after which responder can sign off naturally.
Exact follow-ups vary. Some pairs play modified Wolff with extra invitational and slam-going meanings, but the basic rescue idea stays the same.
Opener supports responder
- 3 shows three-card spade support in many Wolff structures.
- Responder can pass with a weak hand that wanted to escape 2NT.
Opener denies support
- 3 is artificial in common Wolff methods when opener lacks three-card spade support.
- Responder can now pass or bid a natural signoff, depending on the hand.
Completing the signoff
- 3 is a natural signoff after the 3 relay.
- Opener must pass; the 2NT rebid already described the hand.
Responder goals
Responder can use Wolff with weak hands that need to escape, but many partnerships also layer invitational and slam-going meanings into direct bids. That makes Wolff both a safety valve and a hand-description tool.
The partnership must define which direct bids over 2NT are natural forcing, which are signoff, and which go through 3 first. A common companion scheme: 3 is an artificial game-forcing checkback asking for four cards in the unbid major or three-card support, direct three-level suit bids are natural and forcing with slam interest, and pass, 3NT, and four of responder’s major are signoffs.
Minor-suit escapes are also available: responder passes the 3 relay to play diamonds, or bids clubs at the four level with a long club suit.
Weak spade signoff
- After 1-1-2NT, responder does not want to play 2NT.
- The five high-card points are light, but the useful six-card suit gives the hand enough playing value for an aggressive one-level response.
- Wolff lets responder look for a 3 contract, especially if opener has three-card support.
Game-going responder
- With 10 points opposite 18-19 balanced, responder has clear game values and must not sign off.
- In classic Wolff the 3 relay is reserved for weak hands, so this hand bids naturally and forcing; only modified structures route stronger hands through 3.
Modern variants
Two-Way New Minor Forcing and XYZ solve analogous responder-rebid problems after the lower 1NT rebid or after three one-level bids, but they are not automatic substitutes for Wolff after opener jumps to 2NT. A partnership can merge or extend the methods only with explicit agreements.
The key is not the convention name. The key is making sure responder can stop safely with weak hands and still investigate game or slam with stronger hands.
Common mistakes
- Forgetting that 3 is artificial after the strong 2NT rebid.
- Failing to define opener’s action with three-card support for responder’s major.
- Mixing classic Wolff with modified Wolff or XYZ continuations.
- Using Wolff in auctions where opener’s 2NT did not show the agreed strong balanced hand.
FAQ
What does 3 mean in Wolff Signoff?
After opener rebids a strong 2NT, 3 is artificial and starts a signoff or strain-finding sequence.
Is Wolff only for weak hands?
Classic Wolff is mainly a rescue tool, but many partnerships use modified structures that also handle invitational or stronger hands.
How is Wolff related to XYZ?
Both organize responder’s rebids after low-level constructive auctions, but Wolff is specifically associated with opener’s strong 2NT rebid.