Lambda

 

Lambda is the one of Weak Opening System (WOS).

Weak Opening System this mean: PASS above 13 + HCP, other 0 – 12 HCP

Lambda was created by Lukasz Slawinski.

This is one of version not too far original.

 

Partnership bidding methods.

Openings

After our PAS

After our 1M/N

Competitive Bidding

In responding to openings over a double

In responding to openings over an overcall

Slam bidding methods

 

 

 

 

Partnership bidding methods.

 

Openings

PAS = 13+HCP, any distribution;

            1§ =     6 –10 HCP, BAL or 11 +HCP, any distribution;

            1¨ = 0- 5 HCP, the same as 1st opening and next bidding;

            1© to 2ª = 6 – 10 HCP, the same as 1st openings and next bidding;

            above 2ª = no existing;

1§ = 8-12 HCP, BAL;

            1¨ = ask, F1; rebids are natural

            Other = natural, NF;

1¨ = 0 – 7 HCP any distribution

            1©\ª = natural, 2+\3+ NF;

            1N = ART, STR, F1;

                        2§ = double negative

                                   2¨ = ART, FG

                                   Other = NF;

                        Other = natural, FG

            2N = natural, NF; STY, TRF, Smolen

            Other = natural, NF

1© = 8 – 12 HCP, two suit hand min (54), can be (4441); §© or ¨ª;

1ª = 8 – 12 HCP, two suit hand min (54), §ª or ¨©;

1N = 8 – 12 HCP, two suit hand min (54), §¨ or ©ª;

2m\M = 8 – 12 HCP, natural 6+, one suit hand; 2N = Future ask, Raise only non force

2N = Martens; PRE; one suit hand; very weak suit of m or strong suit of M (too weak for 4M and too strong to 3M)

3¨ = suit ask

            3©\ª = §\¨

4§\¨ = ©\ª

3N = Gambling, no outside Ace or King; § = P or correct, 4¨ = short ask (5m = short om);

4m = Namyats

Other = PRE

 

With good Ace and King should no opening 1¨. After one suit ask next naturally bidding. Suit ask maybe strong 13+HCP or weak. With weak usually give pass for any rebids.

4th suit = Game Force

 

 

 

After our PAS

W        E

PAS     1§

?

1¨ =     13 – 16 HCP, BAL or 17+ HCP, any distribution;

Other = 13 – 16 HCP, the same as 1st openings and next bidding

 

W        E

PAS     1§

1¨       ?

            1© = 11+ HCP, any distribution, FG

            Other = 6 – 10 HCP, natural, BAL

 

W        E

PAS     1§

1¨       1©

?

1ª = 17+ HCP, any distribution, next naturally bidding

Other = 13 –16 HCP, BAL, next naturally bidding

 

After our 1M/N

 

W        E

1M\N  ?

            next bid = suit ask

2\3N = “show your cheapest suit”, F1;

            Other = 3+ natural, NF

                        “I know what you have”

 

W        E

1M\N suit ask (next bid)

?

1N = (4441) with any singleton, 2§ = singleton ask

2m\M = 5+ natural; without 2¨ = (54) in minors;

2N after 1©\ª is FG, other natural

2N = 55

            3§ = suit ask;

            Other = P or correct

3m\M = 6+, natural, max HCP

 

 

 

Competitive Bidding

 In responding to openings over a double:

 Our1m\M;

Rdbl = SOS, sometimes with strong hands:

Pas = 3+, NF

New suit = 5+; after 1¨ maybe bluff

General we try to find suits min 7 card. In next bidding rdbl always be SOS

 

 Other openings

DBL= penalty

 

In responding to openings over an overcall

 Our PAS\1§

Takeout doubles through 3ª; Cue Bid Michaels. After 1§ force only cue bid and double.

 

 Our 1M\N

Double to 2ª = P or correct

2N = “show your cheapest suit”, F1;

            Other = non-force.

 

 

Slam bidding methods

RKCB 1430, Cue Bids, Splinters

 

 

 

For e.g.

After our 1ª we bid 2§ with hand      ª 2 © 875 ¨654 § A97652              and

ª 2 © 87652 ¨ 9653 § KJ9

Usually pass will be the best bid.