Check Back Stayman

Introduction

The purpose of check back stayman is to show a 5 card major or the other major after the following sequence

1C/D – 1H/S – 2NT (18-19 pts)

It also helps with slam bidding as it enables the opener to limit their hand quickly knowing they do not have to bid the S’s after responders 1H bid

Eg


1C
2S
1H
?? What does responder bid with no support and 15 pts? Opener could pass with a minimum 18 pts
1C
2NT
1H
?? Clearly a slam try is mandatory if responder has 15 pts

So how does it work.

2D is check back stayman and asks opener to describe the situation in the majors.

Unfortunately, the answers are different depending whether responder has bid H’s or S’s.

Responder has bid 1H

1C
2NT
??
1H
3D (Check back Stayman)

Opener bids

Responder has bid 1S

1C
2NT
??
1S
3D (Check back Styman)

Opener bids