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I have noticed references to Checkback in several threads. I am aware of Checkback Stayman, according to one definition:
"The bidding sequence 1 Club - 1 Heart - 1 No Trump - 2 Clubs asks the opener to give preference to Hearts, or to show an unbid four-card Major Spade suit. If the opener can not support Hearts and has no four-card Spade suit, the opener rebids Diamonds. If the opener rebids either 2 Hearts or 2 Spades, this rebid is purely invitational and not forcing. Some partnerships use the 2 Diamonds rebid as a game-forcing Checkback Stayman, and 2 Clubs as a weak Stayman. If the rebid is 2 Clubs in this partnership agreement, then the responder shows invitational values if he bids again."
Are there many types of checkback? Is reverse drury a checkback? Is a checkback any artificial bid which asks partner to clarify his hand?
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Checkback
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Posted 2003-May-12, 19:01
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I have noticed references to Checkback in several threads. I am aware of Checkback Stayman, according to one definition:
"The bidding sequence 1 Club - 1 Heart - 1 No Trump - 2 Clubs asks the opener to give preference to Hearts, or to show an unbid four-card Major Spade suit. If the opener can not support Hearts and has no four-card Spade suit, the opener rebids Diamonds. If the opener rebids either 2 Hearts or 2 Spades, this rebid is purely invitational and not forcing. Some partnerships use the 2 Diamonds rebid as a game-forcing Checkback Stayman, and 2 Clubs as a weak Stayman. If the rebid is 2 Clubs in this partnership agreement, then the responder shows invitational values if he bids again."
Are there many types of checkback? Is reverse drury a checkback? Is a checkback any artificial bid which asks partner to clarify his hand?
"The bidding sequence 1 Club - 1 Heart - 1 No Trump - 2 Clubs asks the opener to give preference to Hearts, or to show an unbid four-card Major Spade suit. If the opener can not support Hearts and has no four-card Spade suit, the opener rebids Diamonds. If the opener rebids either 2 Hearts or 2 Spades, this rebid is purely invitational and not forcing. Some partnerships use the 2 Diamonds rebid as a game-forcing Checkback Stayman, and 2 Clubs as a weak Stayman. If the rebid is 2 Clubs in this partnership agreement, then the responder shows invitational values if he bids again."
Are there many types of checkback? Is reverse drury a checkback? Is a checkback any artificial bid which asks partner to clarify his hand?
Let's start with the last question first. Is reverse drury a checkback? No. In reverse drury you passed and your partner opened, perhaps light. When you bid reverse drury, you are announcing a known fit in the major, so you are not checking back looking for a fit. What you are investigating is rather or not partner had a real opening.
Your copied definition of checkback is fine. In two way checkback (using both 2D and 2C), 2D is game force, but 2C is typically either checkback or signoff in 2D. Opener puppets by bidding 2D over 2C, and if responder pass then it was to play 2D. If resonder bids again, then 2C was game try, with interest in the majors
--Ben--
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