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Modified Wolffe Convention


Deevan

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I have come across 2 versions of the Modified Wolff Convention:

(a) Responder is showing at least 5 cards in both Majors, a very weak hand (not suitable for game, unless there is a Fit); basically, asking the Opener to Pass or Correct. Example:

1m-1M

2NT-3C (A relay to 3D. Generally showing a weak hand, with 1 exception.)

3D-3OM (OM=Other Major. Responder confirms a weak hand and asks opener to pass or correct.

(b) Responder is making a slam try in the Om (the other minor).

1m-1M

2NT-3C (A relay to 3D.Generally showing a weak hand, with 2 exceptions)

3D-3OM (A Slam Try in the Other minor)

The bidding shown here assumes no interference by Opponents.

It is assumed that the first exception is 1m-1M-2NT-3C-3D-3NT= Slam Try in the Opener's minor.

I would appreciate receiving comments, based on your own experience with the 2 versions of Modified Wolff. In particular, it may be helpfull to focus on some of the following points:

1) Given the 1m-1M-2NT sequence as a START, what is the relative frequency or probability of the Responder holding (i) A 5-5 Weak M hand; vs (ii) A 5M-5Om Strong-ish hand?

2) How often did the partnership forget the "agreement"?

3) Of course, any other comments are most welcome.

Thanks, in advance for your comments.

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What is the reference for those Modified Wolff treatment ?

 

It seems that they cater to relatively low percentage holdings for Responder.

 

A few examples with my "normal" version for the following sequences in Wolff Relay are:

 

1m - 1S

2NT - 3C!

3D! - 3H = 5/5, GF

 

1m - 1H

2NT - 3C!

3D! - 3S = 4/4, GF

 

and for the 5/4 or 4/5 :

1m - 1M

2NT - 3C!

3D! - 3oM, GF

 

and the "sign-off" is :

1m - 1M

2NT - 3C!

3D! - 3M (WEAK)

 

How do you describe all of these in the "modified" that you found ?

 

The following 3D = natural, GF, 2nd suit:

1m - 1M

2NT - 3D

 

And Responder showing a Clubs as a 2nd suit, GF is:

1m - 1M

2NT - 3C!

3D! - 3NT! = 4+, 10-12 hcp

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