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.
In responding to openings over a double
In responding to openings over an overcall
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
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
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
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
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.
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.