Notrump Systems

[hrothgar]

For what its worth, the Scanian NT system uses transfers after Stayman...

 

I'm doing this from memory (after eating most of a pork shoulder for lunch), so forgive me if I get this wrong, however, as I recall

 

1N - 2♣

2♥ - 2N

 

2N = transfer to clubs

 

I really like the Scanian structure, however, I consider the memory load oppressive. I'd only recommend it for serious partnerships who play weak NT openings. (The more frequent your NT openings, the more reasonable it is to adopt complicated methods)

[han]

1994? That's before Justin was born isn't it?

[gnasher]

I remember being made to play transfers after transfers in about 1990.

[glen]

I remember being made to play transfers after transfers in about 1990.

"Repeated Jacoby Transfers" is on pages 651-652 of Bridge Conventions Complete by Amalya Kearse, 2nd edition, 1990. It might be in the first edition (1984). Kearse does not reference the source article, but I believe it dates from the 70s in The Bridge World, or perhaps early 80s:

 

In the Sep. 1981 issue, in the What's New in Bridge series:

 

Extending Jacoby Transfers by Jim Hicks

The advantages of Jacoby Transfers are well known ... Extension of the principle to the next round can lead to similar gains. ... In particular, let any any non-jump rebid by responder be a transfer to the next higher denomination ...

In the article, 1NT-2♦;-2♥-2♠ is a flat game try/slam try, in the table "Details of Second-Round Transfers"

[blackshoe]

and Cappelletti, Hamilton and Pottage are still arguing over their convention.

You left out Helms. :)

[Impact]

I have used many things but can claim to be the inventor (albeit great minds think alike) of transfers and then step 1 is any GF 5-5 (with relays available and setting suits etc) but all steps other than step 1 are transfers showing shortage in next suit up

 

ie 2D to 2H and then 2S= 5+H & 5+other

2NT= 5+H & short C

3C= 5+H & short D

3D= 5+H & short S

3H= 6H invit

 

Opener can agree suit or bid shortage to ask for a second suit (which can only be 4 cards in length).

 

Combine this with Stayman (which incorporates a full relay set below 3NT and then allows control asks and location as Mikeh notes) and garbage Stayman, while higher bids are:-

 

3C= both minors weakish (5+5+)

3D= both Majors invit (5+5+)

3M= fragment with 54 minors

4m= texas

 

and that is a lot simpler than Scanian

 

regards