INTRODUCTION
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REGRESsion home Diviation scheme Basic scheme End signal interference conventioncard Search
Weak Opening System
by
Marcel den Broeder
complete schemes: Openings 1/2nd pos.: Sl'-S'-Tab
Suggested
defence for
opponents
Nomenclature Notation
Balanced
[Pass]
1club opening sequence
1diamond opening sequence
Spiral Sc. WOS links playing on line
Singl./void Delta
1heart-2diamonds openings sequences
2hearts
2spades/3no trumps openings sequences
Exclusion our overcall literature / © downloads
Singl./void Extreme    
tools
others hum overcall bid examples interactive


Openings in 1st/2nd position
Bid HCP Description
[Pass] 13+ any shape (12+ Extreme, 13+ any)
1club opening 8-12
7-11 (12)
singleton/void any suit , shape 4441 up to 7330, according singleton DELTA scheme
OR extreme shape: 8 carder or 9 carder, both 1-suiter (9c.can not be solid or with AK) or event.DELTEX 8-12
1diamond opening 0-7 any shape and no Ace + any King
1heart opening 8-12 any 4333, 4432
any 5332 and poor suit = no 2/3 Toph.
5M422
1spade opening 8-12 5422, 6322 òr 5332 and good clubs = min. 2/3 Toph.
1no trump opening 8-12 5422, 6322 òr 5332 and good diamonds = min. 2/3 Toph.
2clubs opening 8-12 6322 òr 5332 and good hearts = min. 2/3 Toph.
2diamonds opening 8-12 6322 òr 5332 and good spades = min. 2/3 Toph.
2hearts opening 8-12 any 7222 (vul / n : with min. ànd poor suit open as a 6322)
2spades opening 7-11 7/8/9 in and 4 card in // with a minimum
4 crd.in and 7 /8 /9 in // with a maximum
6+/5+ in and vv
2no trumps opening 7-11 7/8/9 in and 4 card in // with a minimum
4 crd.in and 7 /8 /9 in // with a maximum
6+/5+ in and vv
3diamonds opening 7-11 7/8/9 in and 4 card in // with a minimum
4 crd.in and 7 /8 /9 in // with a maximum
6+/5+ in and vv
3hearts opening 7-11 7/8/9 in and 4 card in with a minimum
7/8/9 in/ and 4 card in with a maximum
6+/5+ in and vv
3spades opening 7-11 7/8/9 in and 4 card in with a maximum
6+/5+ in and vv
3no trumps opening 7-11 7/8/9 in and 4 card in with a minimum
7/8/9 in and 4 card in with a minimum
6+/5+ in and vv ( or use 3clubs opening-4hearts opening bids for this shape - see below -)
6/5 or7/5 in and vv and then the use of 3clubs opening bid and/or higher for this shape
3no trumps opening 7-9 7/8/9 in and 4 card in (thus with a minimum)
7/8/9 in and 4 card in (thus with a minimum)
3clubs opening 7-9 6+/5+ in and vv
4clubs opening 10-11 6+/5+ in and ( Ž )
4clubs opening 10-11 6+/5+ in and ( < )
following bids up to you. Namyats etc, what ever you like, or if you want to give the 8500, 6610, 7600 a place ;-) or:
3clubs opening 6-10 10chearts opening minimum OR 10chearts opening max (No AKhearts opening) OR AK 9chearts opening and no side value
OR any 9c with AK + side Queen(not stiff)
4diamonds opening 6-10 10chearts opening minimum OR 10chearts opening max (No AKhearts opening) OR AK 9chearts opening and no side value
4hearts opening 6-10 10chearts opening minimum OR 10chearts opening max (No AKhearts opening) OR AK 9chearts opening and no side value
4hearts opening 6-10 10chearts opening minimum OR 10chearts opening max (No AKhearts opening) OR AK 9chearts opening and no side value
4hearts opening 7-9 AK hearts opening 10card no side value
4hearts opening 10 any AK 9card with side King
3clubs opening/4hearts opening as example, also possible in the 1club opening opening

Regarding the preempt aspect of the whole system (including if you play Deltex within the Delta openings) :

My experience in natural systems with weak 2/3's is that you often preempt your partner instead of the opponent. Even if you use constructive ones in 1st or 2nd. position. I have noticed already a trend for Lucas Two (Muiderberg: 5card Major and a 4+card minor) to upgrade the pointrange to f.e. 10-14, 11-15 instead of the original range of 6-11 points. Or limitations regarding a 3card in the other Major in such an opening or a Multi Colored.

Reason why in REGRESsion I have followed an other style. Because of the Weak Opening System itself (8-12 etc.ranges) on one hand and on the other hand the description of the bids involved and all the possibilities for precision possible in a further procedure òr competitive/obstructive bids by the Relayer. Resulting that 'common' preempts are not used.

 

Let's compare the openings in REGRESsion with common weak-2/3/4's :
Openings in 1st/2nd position ( * and compared with a HCP range of a 'common' weak range/shape only)
Bid HCP* max Description
1club opening 8-10/11
7-10
12
11
5M4m, 5/5's, 6(1 or 2-suiter) or 7-carder 1-suiter : all with any singleton/void
8,9,10,11 or 12-carder : all 1-suiters and with any singleton/void
1diamond opening 0-7
0-6
0-6
5M4m, 5/5's, 6- (1 or 2-suiter) or 7-carder 1-suiter : all with any singleton/void
8,9,10,11 or 12-carder : all 1-suiters and with any singleton/void
7/8/9-4card or 6+/5+
for all: no Ace + any King
1heart opening 8-11 12 4/4-Majors, 5/4-Majors - 22
5M4m22
1spade opening 8-11 12 6322, 54?22 òr 5332 with at least 2 toph./3
1no trump opening 8-11 12 6322, 54?22 òr 5332 with at least 2 toph./3
2clubs opening 8-11 12 6322 òr 5332 with at least 2 toph./3
2diamonds opening 8-11 12 6322 òr 5332 with at least 2 toph./3
2hearts opening 8-10 12 any 7222 (vul / n : with min. ànd poor suit open as a 6322)
2spades opening 7-10 11 7/8/9 in and 4 card in // with a minimum
4 crd.in and 7 /8 /9 in // with a maximum
6/5 or 7/5 in and vv
2no trumps opening 7-10 11 7/8/9 in and 4 card in // with a minimum
4 crd.in and 7 /8 /9 in // with a maximum
6/5 or 7/5 in and vv
3diamonds opening 7-10 11 7/8/9 in and 4 card in // with a minimum
4 crd.in and 7 /8 /9 in // with a maximum
6/5 or 7/5 in and vv
3hearts opening 7-10 11 7/8/9 in and 4 card in with a minimum
7/8/9 in/ and 4 card in with a maximum
6/5 or 7/5 in and vv
3spades opening 7-10 11 7/8/9 in and 4 card in with a maximum
6/5 or7/5 in and vv
3no trumps opening 7-9 7/8/9 in and 4 card in (thus with a minimum)
7/8/9 in and 4 card in (thus with a minimum)
3clubs opening 7-9 6/5 or7/5 in and vv
4clubs opening 10-11 6/5 or7/5 in and ( Ž )
4clubs opening 10-11 6/5 or7/5 in and ( < )

In this way constructive biddings are still possible completely. Exact distribution, if needed, can be asked for, employ all your tools etc.
But competitive or obstructive possible as well.
Most common will be the 1
diamonds opening - 2diamonds opening bids of course. If a balanced opening (1diamonds opening - 2diamonds opening) you can compete with your own suit immediately too, knowing a doubleton at least in your partners hand.

All these aspects counter-balance a direct preemptive bid in my opinion.

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