This note is only some special conventions.
If you want to know details, please go to my convention of precision system

All bids marked * are forcing.
Opening Bids
1*------- Artificial, 16+ HCP, any distribution except for 22-23 HCP balanced hands, 4414 (singleton ) hands
1---------11-15 HCP, 3+ diamonds, no 5-card majors.
2---------11-15 HCP, either 6+ club suit or 5 club suit plus a 4-card major suit.
2*------- 4414 shape, singleton hands
---------------------------------------------------------------------------------
1.Responses to 1

(1) Negative: 1*-- 0-7 HCP or 8+ 4441 shape
(2) Constructive: 2H:/2S:- 4-7 HCP, 6-card suit; little strength outside.
(3) Positive: 1H: /1S:/2C:/2D:*-- 8+ HCP, 5+ card suit

2.Responses to 1NT Opening

Open 1NT with 13-15 HCP, balanced hands. Only clubs can be 5 cards long.

1) 2C:* ------ 10+ HCP, Stayman.
2) 2D:* ------ Jacoby transfer to hearts
3) 2H:*------- Jacoby transfer to spades

3.Responses to 2C:

2C:opener holds 11-15 HCPs and either 5+ clubs with a 4-card major or 6+ clubs.
1) 2D:* ------ 11+ HCP, conventional and forcing . Opener rebids:
      2) 2H: -----------11-13 HCP, 4-card H: suit
      3) 2S: -----------11-13 HCP, 4-card S: suit

4.Responses to 2H:/2S: Opening 6--10 HCP

(1)   Responses to 2H::
      1) 2S:/3C:/3D:* ------ 5+ card suit, force 14+ HCP
      2) 2NT*------------- asking for other suit, force 14+ HCP
      3) Raises in hearts----- preemptive
(2)   Responses to 2S::
      1) 2NT--------------- strong relay, asking for other suits 14+ HCP
      2) 3C:/3D:/3H: ------- 5+ card suit, force 14+ HCP
      3) Raises in spades--- preemptiv

5.2NT : 21--23 HCP: balanced

     1) stayman, Jacoby,Texas
     2) 3NT-- sign off

6.Gambling 3NT

Opener begins with 3NT with a solid 8+ card minor suit. Opener promises one outside stopper. No void.
     1) 4C:-- Modified Stayman

7.After intervention
1) Double
     1)  Pass ----------- weak, nowhere to escape
      2) Redouble* ---- strong
     3) other natural

2) Suit overcall
     1) Double ------ Penalty or Negative
     2) cue-bid:------ Strong
     3) other natural

8.Competitive Bidding

1) Michael's Cue-bids
     14+ HCP, at least 5-5 in two unbid suits
2) Unusual 2NT
     11+ HCP, with at least 5-5 in 2 lowest unbid suits.
3) Competive and Double 1NT as natural NT
defend weak bid
4) Double ------13+ HCP, shortness in opener's suit except for 4C:/4D:/...
5) new suit------13+ HCP, 5+ card suit
6) 4C:/4D:
           Double---16+ HCP, for penalty with quick tricks
7) 4H:--
           Double---16+ HCP, Penalty and 4+ S:

9.Doubles

1) Takeout------------- over minor the takeout double usually promises 4 card suit in both majors, over opponent’s major
2) opening promises 4+ card in the other major.
3) Negative------------- through 3S:
4) Lightner-------------- Requests an unusual opening lead against opponent’s slam contract.
5) Takeout or Penalty?-- Double is for penalty if at least one partner has defined his shape.

published by xiaowei xu at 01/01/2003