This blog provides supplementary thoughts and ideas to the site. If you haven't seen the main site, there is a lot there including the Martel and Rodwell interviews, photos, and articles. This blog is focused on advancing bridge theory by discussing the application of new ideas. All original content is copyright 2009 Glen Ashton.

Monday, February 16, 2009

Half Rite

In ACBL General Convention Chart events (most events) you can employ a half transfer method over your 1C opening:

1D: transfer to Hs
1H: any game force, 1S is now waiting, asks responder to describe game force
1NT: 6-10 balanced, no 4cM
2C: 4+Cs, no 4cM, up to game invite values, may have longer Ds, balanced only if game invite
2D: 6+Ds, no other 4+ suit, less than a game invite
2NT: game invite, balanced with 4/5 Ds
3D: 6+Ds, no other 4+ suit, game invite
Rest: as you currently play it, but 1S natural response is non-forcing

If you want to use the one and only transfer for spades:
1D: transfer to Ss
1H: natural
1S: any game force without a five card major
Rest: as above

After 1C-2C showing 4+Cs, no 4cM, may have longer Ds, balanced only if game invite:

2D: balanced hand with fewer than 4Cs, less than 15, non-forcing
2H: asks for further description, 2S shows unbalanced minimum and 2NT then re-asks
2S: game try in Cs
2NT: 18-19 balanced
3C: to play unless responder is maximum and shapely

If you use 1D as a transfer to spades, you can find heart fits nicely. If you use 1D as a transfer to hearts, you have the nice sequence 1C-1H(any GF);-1S(waiting)-1NT to show a natural game force. When using the 1D as a transfer to hearts, sequences like 1C-1S(natural);-2C-2H are natural and non-forcing, since 1H would be the response with game forcing values. Thus the 1D as a transfer to hearts still allows for most heart fits to be found after the 1S natural response, even without using Reverse Flannery By Responder (i.e. a jump shift over the 1C opening to show 5+Ss, 4+Hs).

Costs to using the half transfer method include giving the opponents new ways into the auction; however the 1C-2D and 1C-3D responses block the opponents far better than the standard 1C-1D response. Likewise 1C-2C is better for obstruction than the standard choices when holding 4Cs and 5+Ds.

Using 1D as a transfer to hearts, 1C-1S is natural and non-forcing, but only should be passed with exactly 3Ss and 11-12 points, since if opener holds extra points and/or 4Ss passing 1S would risk missing a nice game.


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