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XYZ convention


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Hi all

 

I was at a local bridge party last weekend where i heard a discussion re: XYZ convention.... From what i understood the convention is similar to 2way check back. for example

 

1d 1h

1s 2c = relay to clubs

2d = artificial and game forcing.

 

 

I'd like to know more about this convention. Also how does this convention mesh with fourth suit forcing. A reference to material on the web would be helpful.

 

Thx

 

Easy

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XYZ is so called because it applies in all auctions that satrt 1X-1Y-1Z. It is an extension of 2 way checkback differing in that 1Z need not be 1NT.

 

XYZ relpaces fourth suit forcing in 1 level sequences.

 

2C requires opnener to bid 2D. Responer wishes to sign off in diamonds or will show a game invitation. Opener can make a different bid if he would not have passed a natural 2D signoff.

 

2D is an artificial game force.

 

 

Lets' take 1D-1H-1S as an example:

 

After 1D-1H-1S-2C-2D, responder bids:

 

Pass= to play.

2H = invitational, 5+ hearts

2S = invitational, 4 spades

2N = invitational, club stopper, tends to be off-shape.

3C = invitational, real club suit.

3D = invitational, 4+ diamonds

 

Repsponder's rebids other than 2C/2D:

 

2H=weak signoff, maybe only 5 hearts.

2S=weak signoff, 4 spades (sometimes 3)

2N=invitational, balanced with with club stopper.

3C= club signoff (weak 4-6)

3D = GF, excellent diamond support

3H = GF, excellent 6+ hearts

3S = GF, 4 good spades

3N = to play.

 

Direct game forces thend to have very good suits but minimum values. Strong GF hands or hands where the partnership needs to find a fit go thru 2D.

 

Some advanced players prefer conventioal meanings for the GF bids and show all natural GF hand by bidding 2D first.

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This convention sounds as if it is most useful when playing secondary jumps are forcing to game. Is that correct?

 

Should be the other way around:

 

This convention is most useful BECAUSE you can play secondary jump for

game forcing and have many other "free" sequences at your disposal too.

 

For example, with 2 starting an invitation sequence, you

may reckon that you don't really need 2NT to be natural, let's say

you may play 2NT as transfer to 3 and thus generate many

useful sequences thereafter.....

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