INTRODUCTION SHAPE SEQUENCES Slam Defence Miscellaneous 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 1 1 Spiral Sc. WOS links playing on line Singl./void Delta 1-2 2 2/3 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) 1 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 1 0-7 any shape and no Ace + any King 1 8-12 any 4333, 4432 any 5332 and poor suit = no 2/3 Toph. 5M422 1 8-12 5422, 6322 òr 5332 and good clubs = min. 2/3 Toph. 1 8-12 5422, 6322 òr 5332 and good diamonds = min. 2/3 Toph. 2 8-12 6322 òr 5332 and good hearts = min. 2/3 Toph. 2 8-12 6322 òr 5332 and good spades = min. 2/3 Toph. 2 8-12 any 7222 (vul / n : with min. ànd poor suit open as a 6322) 2 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 2 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 3 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 3 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 3 7-11 7/8/9 in and 4 card in with a maximum 6+/5+ in and vv 3 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 3-4 bids for this shape - see below -) 6/5 or7/5 in and vv and then the use of 3 bid and/or higher for this shape 3 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) 3 7-9 6+/5+ in and vv 4 10-11 6+/5+ in and ( Ž ) 4 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: 3 6-10 10c minimum OR 10c max (No AK) OR AK 9c and no side value OR any 9c with AK + side Queen(not stiff) 4 6-10 10c minimum OR 10c max (No AK) OR AK 9c and no side value 4 6-10 10c minimum OR 10c max (No AK) OR AK 9c and no side value 4 6-10 10c minimum OR 10c max (No AK) OR AK 9c and no side value 4 7-9 AK 10card no side value 4 10 any AK 9card with side King 3/4 as example, also possible in the 1 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 1 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 1 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 1 8-11 12 4/4-Majors, 5/4-Majors - 22 5M4m22 1 8-11 12 6322, 54?22 òr 5332 with at least 2 toph./3 1 8-11 12 6322, 54?22 òr 5332 with at least 2 toph./3 2 8-11 12 6322 òr 5332 with at least 2 toph./3 2 8-11 12 6322 òr 5332 with at least 2 toph./3 2 8-10 12 any 7222 (vul / n : with min. ànd poor suit open as a 6322) 2 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 2 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 3 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 3 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 3 7-10 11 7/8/9 in and 4 card in with a maximum 6/5 or7/5 in and vv 3 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) 3 7-9 6/5 or7/5 in and vv 4 10-11 6/5 or7/5 in and ( Ž ) 4 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
- 2 bids of course. If a balanced opening (1 - 2) 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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