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XYZ Convention - XYZ, meaning 3 successive partnership bids beneath the 2 level is a forcing conventional bid (similar to New Minor Forcing and Checkback Stayman methods).  XYZ allows the partnership to explore game using low level bids and efficiently find suit fits.  Generally, the XYZ Convention is "on" when responder's rebid options include both minor suits (2C and 2D).  The XYZ Convention has 10 possible unimpeded bidding sequences:

1C - 1D;
1H

1C - 1D;
1S

1C - 1D;
1N

1C - 1H;
1S

1C - 1H;
1N

1C - 1S;
1N

1D - 1H;
1S

1D - 1H;
1N

1D - 1S;
1N

1H - 1S;
1N

 

 

 

Should the opposition enter the auction, XYZ is still on in 1 level auctions, such as:

1C - (X) - XX - (1H/S);
1S/N

1D - (1H/S) - X - (P);
1N

1D - (P) - 1H - (1S);
X
   Still on if Support Dbl

After XYZ is invoked by opener, responder's bids are:

Response

Meaning

2C

Requests opener to bid 2D which responder may pass or follow up with an invitational bid.
Note: like similar conventional bids, responders rebid beyond 1 Notrump is artificial and alertable.

2D

Game forcing, responder's hand pattern not yet disclosed, leaving an abundance of bidding space.
Note: like similar conventional bids, responders rebid beyond 1 Notrump is artificial and alertable.

2H/S

Showing a signoff bid, except opener's reverse: 1H followed by 2S

2N

Inviting 3N

3C

Showing a signoff bid

3D/H/S

Game forcing, shape showing

 

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