BridgeMatters

This blog provides supplementary thoughts and ideas to the www.bridgematters.com 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.

Wednesday, November 07, 2007

Here are some schemes that restructure the one level minor suit opening framework to incorporate a 1NT 10-12 opening. For a discussion on some of the related issues, see the entry just before this.

A) 1C Handles 15-17 Bal

1C: Cs or 15-17 balanced
1D: Ds or 13-14 balanced or 18-19 balanced

Analysis: Minor suit openings are both 2+. Straight-forward bidding sequences.

B) 1C Handles 16-18 Bal

1C: Cs or 16-18 balanced
1D: Ds or 13-15 balanced or 19-20 balanced

Analysis: Minor suit openings are both 2+. Straight-forward bidding sequences. 1D covers more range when minimum balanced. 1C is more bullet-proof.

C) 1C Handles 13-14 or 18-19 Bal

1C: Cs or 13-14 or 18-19 balanced
1D: Ds or 15-17 balanced

Analysis: Minor suit openings are both 2+. Straight-forward bidding sequences. 15-17 does not have the room that A has to unwind, while 13-14 gains room it will often not need.

D) 1C Handles 16-20 Bal

1C: Cs or 16-20 balanced
1D: Ds or 13-15 balanced

Analysis: Minor suit openings are both 2+. Straight-forward bidding sequences. 1D is only balanced when minimum.

E) Wide Range

Note: Some who play 10-12 still want the minor openings to be 3+. The consequence is wider range for 1NT rebids.

1C: Cs or 13-18 balanced with 3+Cs
1D: Ds or 13-18 balanced with 3+Cs
2C: Handles strong hands including 19-20 balanced (2NT is 21-22 balanced)

Complexity: 1m-1M--1NT is 13-16, 1m-1M--2NT is 17-18.

Analysis: Minor suit openings are both 3+. 1NT rebid is a bit too wide. Hard for opener to show particular balanced range on some sequences when the opps are into the bidding.

F) Narrow

Note: the concept here is to use narrow ranges for 1NT rebids thus less invites-and-pass contracts – either go to game or stay low

1C: Cs or 15-18 balanced
1D: Ds or 13-14 balanced
2C: Handles strong hands including 19-20 balanced (2NT is 21-22 balanced)

Complexity: If it goes 1C-1D, opener can use Kokish 1H rebid (showing Hs or balanced) to show 17-18 balanced – thus 1C-1D--1NT is 15-16.

Analysis: 2+ minors. NT rebids are two-point ranges, so less invites necessary.

G) Hybrid

Note: Somewhat based on ETM Victory system, the idea was that 1C would be either Cs, or big balanced, or some hybrid of hands that were both Cs+balanced and just less than big balanced

1C: Cs or 15-17 balanced or, 13-14 balanced with either 5Cs and/or just 2Ds, or 18-19 balanced not suitable for 1D opening
1D: Ds or 13-14 balanced with 3+Ds, or 18-19 balanced with 3+Ds

Complexity: uses 1C-1M--2D as two-way: D reverse or extra value raise to 2M. This allows 1C-1M--2M to be bid with the less than 15 hands only. 1C-1M--1NT is 15-17 or 5Cs and 13-14 (so decent playing value).

Analysis: 1D is 3+ instead of 2+. Some complexity.

H) System using the Fantoni-Nunes model

For whole system ideas, one can take the Fantoni-Nunes system and modify it slightly to incorporate the 10-12 NV 1NT and make it a little lighter.

It could be:

1C: 15+ Balanced or 13+ Cs
1D: 13+ Ds or 13-14 Balanced
1M: 5 or longer major, 13/14+ or 11-13 with both majors
1NT: 10-12
2C: 5+Cs, 9-12
2D: 5+Ds, 9-12
2M: 5 or longer major, 9-12, must have a singleton if just a five card suit
2NT: 21-22 Balanced

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