Practice on Cuebids
Practice continuations after opener rebids 1NT, including Checkback, New Minor Forcing, Two-Way Checkback, and natural methods.
Categories
Systems
Last updated
2026-07-31
What is Checkback Stayman?
Checkback Stayman is used after opener makes a one-level suit opening, responder bids at the one level, and opener rebids 1NT. Responder bids 2 artificially to ask opener for delayed major support or an unshown four-card major.
The convention solves a common problem: opener may have a balanced minimum and still hold three-card support for responder's major or a four-card major that could not be shown naturally without distorting the auction.
Responder checks back
- 2 is artificial Checkback Stayman.
- Responder is asking about three spades, four hearts, or opener's strength according to partnership structure.
When responder should use it
Standard Checkback is normally invitational or better. Weak hands usually pass 1NT, rebid their own long suit naturally, or choose a practical part-score.
Responder should know what information is needed before bidding 2. The goal may be to find a 5-3 major fit, find a 4-4 major fit, invite notrump, or start a forcing minor-suit auction.
- Use Checkback with invitational or better values when a major fit may still exist.
- Do not use it merely to avoid notrump; responder needs a clear follow-up plan.
- Agree whether 2 promises invitational values or can include weak escape hands.
- The main cost is losing the natural 2 signoff: with a weak hand and long clubs, responder must pass 1NT or play at the three level.
- Most pairs turn Checkback off after opponents interfere over 1NT and should discuss whether it applies by a passed hand.
Opener's responses
The exact response structure depends on which suits have already been bid. Most systems prioritize showing delayed support for responder's major, showing an unbid four-card major, or denying either fit.
A simple structure is enough for most pairs: opener shows three-card support when available, shows the other four-card major when relevant, and otherwise rebids 2 or 2NT depending on strength and agreement.
In Acol, where the 1NT rebid can be wide-ranging, many pairs prefer the related Crowhurst 2, which asks about strength before shape.
Delayed three-card support
- 2 shows delayed three-card support in many Checkback methods.
- Responder can invite, bid game, or continue naturally.
Unbid major shown
- When responder starts with spades, 2 can show four hearts that a minimum opener could not introduce with a reverse.
- Partnership priorities matter when opener has both three spades and four hearts.
Denying both majors
- 2 denies three spades and four hearts, typically with a minimum.
- Some pairs instead bid 2NT with a maximum to help responder judge the invite.
Opener shows a five-card major (Acol)
- In Acol-style methods, 2 now shows five hearts rather than four.
- This finds 5-3 fits in opener's major that would otherwise be lost.
Responder's continuations
Once opener answers, responder places the contract. Raising the found major or bidding 2NT is invitational, game bids are to play, and a new suit at the three level is best played as game-forcing.
Invitational raise after support is found
- 3 invites game after opener shows delayed support.
- Three-level bids in new suits after Checkback are best played as game forcing.
Minor-suit follow-ups
Checkback is not only for major suits. Strong responder hands with a long minor can start with 2 and then bid the minor at the three level to create a forcing auction.
This treatment is useful when responder wants to investigate 3NT versus a minor game or slam. It also avoids using a direct jump rebid for too many hand types.
Examples
The recurring decision is whether responder has enough strength to ask. If not, a natural rebid is usually cleaner.
Invite and search for support
- After 1 - 1 - 1NT, responder wants to know whether opener has three spades.
- 2 Checkback keeps 2NT, 3NT, 3, and 4 all in view.
Too weak for Checkback
- Responder had enough to respond 1 but has no invitational strength.
- A natural spade rebid or pass is usually better than an artificial inquiry.
Common mistakes
- Treating 2 as natural after agreeing to play Checkback.
- Using Checkback with no invitational interest and no clear escape agreement.
- Failing to define opener's priorities when opener has both delayed support and the other major.
- Forgetting that Checkback may remove natural weak 2 rebids.
FAQ
Is Checkback Stayman the same as New Minor Forcing?
They solve similar auctions after a 1NT rebid, but Checkback always uses 2 while New Minor Forcing uses the unbid minor.
How strong should responder be?
Most standard methods require invitational or better values, unless the partnership has added weak signoff sequences.