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.

Saturday, August 09, 2008

Update to the system I'm designing for mid-chart (ACBL convention chart) pairs:

Note: N12 = Not vulnerable in 1st/2nd, V34 = Vulnerable or 3rd/4th

1C: Big, 18+ or 15-17 with playing value, either:
1) 15-17 unbalanced, a 6+ suit or a 5-4-3-1 or a 5-5
2) 18+ any

1D: Mini catch-all, 10-14, 3-4Ss V34, 2-4Ss N12, no six card suit, not 5-5, if balanced 11-12 V34, 13-14 N12 or 12 with 4cM or 5Hs

1H: 15-17, balanced or semi-balanced. Can have a five card major or six card minor. Can be any 4-4-4-1. Not a 5-4-3-1 unless singleton is A, K, or Q.

1S: 9-14, 5+Ss

1NT: Balanced including 5-4-2-2s without 5Ss. 12-14 V34 (12 with 3-4Ss can optionally open 1D), 10-12 N12 (no 4cM or 5Hs if 12). Not 5Ss.

2C: 5+Cs, 10-14, if just 5Cs must have a singleton/void S.

2D: 5+Ds, 10-14, if just 5Ds must have a singleton/void S and/or be 5-5 in the minors.

2H: 5+Hs, 10-14, if just 5Hs must have a singleton/void S and/or be 5-5 with a minor.

2S: 5-9, 5+Ss

2NT: 6-5/5-6+ in majors, 10-14

Since almost all 10 counts are opened N12, for not vulerable 34 (N34), 1NT should be 12-15 (a major only if 12-13 and optional), and the balanced range in 1D should be 12-15. 1H will be 15/16-17 balanced, 15s with a five card suit.

1NT in N12 should include the dismal 13s - the 3-3-3-4 and 3-3-4-3 hands.


Post a Comment

<< Home