1 Diamond opening (0-7p.) sequences

I will give you firstly the original seting up for this opening and the bidding after 1

.On the end of this page you will find my version for REGRESsion. But up to you which one is best fitting for your style.

Common was in the past to use the 1

-bid as the fert. Nowedays conservative but for REGRESsion I have maintained this bid on purpose because with a greater/big hand in R it will give you in my opinion better possibiities for an investigation.

"The bidding after 1

is less precise, since the shape of a hand is not determined at all, strength span 0-7 is vast and possibility of being doubled calls for prudence. It seems then, that this part of bidding should be unprofitable. In practice the reverse is true: profits are greater than losses. It is so because of:

1 -	?	1 = 0-7 points any shape AND no any Ace + King (= an 8-pointer)
Bid	HCP	ORIGINAL Description
PASS	0+	long (or at least fitting diamonds) OR no other choise/bid
1	13-18/20	natural and non forcing (19-20p. with balanced hand)
1	13-18/20	natural and non forcing (19-20p. with balanced hand)
[1]	21+	relay (used only after an opponent's Pass)
2	13-18/20	natural and non forcing (19-20p. with balanced hand) and at least good 5+c
2	13-18/20	natural and non forcing (19-20p. with balanced hand) and at least good 5+c
2		preemptive or weakly inviting
2		preemptive or weakly inviting
2		natural, full one suit and 1-2 side stoppers
3		preemptive or weakly inviting
3		preemptive or weakly inviting
3		preemptive (sacrifice proposition)
3		preemptive (sacrifice proposition)
3		natural, full one suit and 1-2 side stoppers
4		preemptive (sacrifice proposition)
4		preemptive (sacrifice proposition)
4>		preemptive or "from count"

1	[1]	21+ points relay (used only after an opponent's Pass)
?
Bid	HCP	ORIGINAL Description
2	0-4	negative	[2]= game(+) forcing, other bids= sign-off, jumps are inviting for game
2	5-7	4+ card
2	5-7	4+ card
2	5-7	minor suit, no major suit
2	5-7	balanced hand no 4+ card Major
3x	5-7	reasonable 6 card

1	1/1/2m	13-18/20 natural and non forcing (19-20p. with balanced hand)
?
Bid	HCP	ORIGINAL Description
With maximum strength (5-7) and a reasonable fit, the opener should push the bidding step further: the game is still possible and the opponents should not find their fit. Also with misfitting suit but a reasonable own bid, one should not give up. There is no reason to stay in a poor contract when partner can be strong. On the other hand, when the already reached contract is satisfying, the game propects dim, or further bidding is too risky one should pass the first oppotunity. in case of a maximum and fitting for partner's Major :
2M	5-7	rather good fit
3M	5-7	5 card support
4M	5-7	6 card support
2	5-7	jumping shortness convention = shortness in other Major , and good support
3	5-7	jumping shortness convention = shortness in , and good support
3	5-7	jumping shortness convention = shortness in , and good support

1 -	X
?
Bid	HCP	ORIGINAL Description
After the double (business), safety is the first goal. One must find a satisfying suit at a low level, thus minimizing the losses. It is not always possible or safe to look for a well-fitted suit. Thus 7 trumps should do. To find then following means are emplyed:
Pass		shows that the doubled suit is long OR fitting
new suit		must not necessarily be long, but shows that the last bid is short
REdouble		S.O.S. with no biddable suit
At the first reading all the above bids must be treated as weak and S.O.S., but they may also happen to be strong - of course the Responder's bids. Especially the redouble substitute the regular 1 bid (after the double 1 is distributional and preemptive). With strong hand the Responder should - after the first seemingly salvage bid - inform partner about his values through:
bidding in non-forced position
jumping invitation
bidding opponent's suit
optional double

Because, as you may have noticed meanwhile/undoubtly, of the symmetric building of the REGRESsion system, I would like to suggest following alteration so that all will keep system-on.

That means treat the 1 opening in almost the same way as after [Pass] - 1, but now of course without the 6-11
" 1 "- balanced opening

1 -	?	1 = 0-7 points any shape AND no any Ace + King (= an 8-pointer)
Bid	HCP	REGRESsion Description
PASS	0+	long (or at least fitting diamonds) OR no other choise/bid OR if you play 2 as 5+ + 4c and no 3or2 rebid
[1]	13+	any 5+c or any 4441 òr 23+ with a 4333/4432
1	13-18	any 4333 or 4432
1	19-22	any 4333 or 4432
2	8+	preemptive or weakly inviting OR 13-15p. 5+ without 3 card Majors
2		preemptive or weakly inviting
OR 2	13-15/16	5+ + 4c Major (because after hearing 6-7 you have a problem. After 0-5 youcan bid 2 but herewith at the same time side info to be able to reach a Major contract). AND symmetry with the sequence [Pass] - 1 - 2)
2		preemptive or weakly inviting
OR 2	13-15/16	5+ + 4c (because after hearing 6-7 you have a problem. After 0-5 youcan bid 2 but herewith at the same time side info to be able to reach a Major contract). AND symmetry with the sequence [Pass] - 1 - 2 Notice the consequence that if you fear that RR could call after your [1] Relay the 2 bid (=6-7p. and a minor) you can't bid 2 as to play! So Pass with such a hand after 1 if you cant bid 3 or 2. Opponent will not Pass normally.)
2		preemptive or weakly inviting
2		5/5 minors or Majors preemptive or weakly inviting
3		preemptive (sacrifice proposition)
3		preemptive (sacrifice proposition)
3		preemptive (sacrifice proposition)
3		preemptive (sacrifice proposition)
3		5+/5+ minors preemptive only
4		preemptive (sacrifice proposition)
4		preemptive (sacrifice proposition)
4>		preemptive or "from count"
4	0-20p.	6+/5+ minors
regarding the [1] relay = 13+ : you can end too high, but don't forget that the opponent often will help you by their own bid!

1	[1]	13+ with any 5+c OR 23+ with a 4333/4432
?
Bid	HCP	REGRESsion Description - alternative A1 and A2
[1]	0-5	any shape no Ace only OR a King + any Queen \| no extreme shapes
1	6-7 5-7 4-6	singleton/void Delta openings singleton/void Deltex openings OR Extreme	[2]= second positive!!	2= extreme 2/3 = Delta or Deltex
			2]= bid your 5+ card if Pass	P, 2, 2, 3, 2= 5/5/ minors or Majors
			else = natural non forcing	if good support, bid
2	6-7	Major, 4333/4432 or 7222 with no 2 tophon. Or KQJxxxx (after hearing 4333/4432 with 2 then 2 = to play!)
2	6-7	minor, or 7222 with AQ or KQ or AQJxxxx (see example)
2	6-7	original 2Delta bid (s/v and a 4441 or 5?440)
so be aware that in the 6-7 pointrange it could be 4 points= Ace only OR 5 points= K + any Queen too! (system on as after Pass(13+) bid)
2/ 3	0-3	Extreme shapes 7/8/9c with a 4c òr 6+/5+ (a max = a King)
or you play all bids real suit according scheme A2
2	6-7	5+ card balanced OR any 4333/4432 (after hearing 4333/4432 with 2 then 2 = to play!)
2/ 2	6-7	5+ card balanced
2	6-7	any 7222 with AQ or KQ in 7 card or solid KQJxxxx
3		7222 with no AQ or KQ in 7 card
3		7222 with no AQ or KQ in 7 card
3		7222 with no AQ or KQ in 7 card
3		7222 with no AQ or KQ in 7 card
3	6-7	any solid 7222 with AQJxxxx

1	[1]	13+ with any 5+c OR 23+ with a 4333/4432
?
Bid	HCP	REGRESsion Description - alternative B
[1]	0-5	any shape no Ace or any King + Queen
1	6-7	4333/4432 or minor	[2]	2= 2=4333/4432 ( then 2 = to play!) 2= 2= any 7222 no AQ or KQ in 7 card or solid KQJxxxx
2	6-7	singleton/void Delta openings
2	4-6	extreme openings
2/	6-7	balanced natural 5 or 6 card
2	6-7	any 7222 and AQ or KQ in 7 card or solid AQJxxxx

1 -	[1]
[1]	?	1 = 0-5 any shape (no Ace, no any K and Q)
Bid	HCP	REGRESsion Description
[1]	+ relay	23+ 4333/4432 OR any suit with 5+ card and 19/20+ points (or 4441)
2	13-18/19	5+ with 3+ card Major(s)
2-2	13-18/19	5 card, non forcing, bid with maximum with good support, natural style (as standard)
2	17-19	5/5 Majors or minors
3	18/19	6+ card no 3c Major(s), non forcing, bid with maximum with good support, natural style (as standard)
3-3	13-18/19	6+ card, non forcing, bid with maximum withgood support, natural style (as standard)
3		to play

1	[1]
[1 ]	[1]	[1] = the strongest bid
?
Bid	HCP	REGRESsion Description according scheme A1
[2]	3/4-5	balanced according standard scheme
[2]	0-3	balanced and no King according standard scheme
2/3	0-5	s/v Delta scheme, so 1 level higher as normal (King only = a maximum, except as singleton)
shape is the most important matter, reason why this has the preference in the setup of above scheme (see example) I used the[2] balanced bid as a 'positive', because after distribution asking there is more bidding space for asking the location of the value(s) as after the [2] bid. After the [2] bid, which ends sometimes after full asking one step higher, you are interested in the exact distribution only and not in an eventual Queen (but nevertheless you will be able to ask for to investigate a slem)

1	[1]	13-18 and any 4333 or 4432
?
Bid	HCP	REGRESsion Description
Pass	0-7	any 4333/4432 OR 5+c and a minimum
1	0-5/7	5+ card any suit, if Major then 0-5p.	2}= Pass or correct	Pass or 2x to play
2	6-7	5+ card and no 4c	2}= suits me, but not with a bal. hand	2= balanced otherwise= jumping shortness convention
			2 = to play 2= help suit trial 2= open 3= help suit trial 3= help suit trial
2	6-7	5+ card and no 4c	2}= suits me, but not with a bal. hand	2= balanced otherwise= ' not ' -jumping shortness convention
			2 = to play 2=open 3= help suit trial 3= help suit trial 3= help suit trial
2	0-7	4/4 Majors	2 = to play
			2= a max and a 4333/4432 and no 4cM	Pass = a minimum 4432 3= a min/max unbalanced 4/5c if a max then no help -3= a max? 3=a min/max unbalanced 4/5c if a max then no help 3=max unbalanced 4/5c + help 3= max unbalanced 4/5c + help 3= a max and a 4432 shape
			3= help suit trial and a max? (which Major defines R)	3= help and a minimum 3= no help and a min/max 3= help and a max no 4432 shape 3= help and a max and a 4432 shape
			3= help suit trial and a max? (which Major defines R)	3= no help and a min/max 3= help and a max no 4432 shape 3= help and a max and a 4432 shape
			3= a max? and n.f
			3= a max? and n.f.
2	6-7	5/4 OR 4/5 Majors	2= suits me, bal. or s/void?	3= 3/4c	3 = help? 3 = to play 3 = to play 3 =Pass with help 4 = transfer your 5card 4 = bid your 5card 4 = pass with 4 5
				3= 3/4c	3 =Pass with no help 3 =Pass with no help 3 =Pass with help 4 = transfer your 5card 4 = bid your 5card 4 = pass with 4 5
				3= « 4522 »
				3= « 5422 »
			3 = transfer your 5card 3 = bid your 5 card 3 = to play 3 = to play
2	0-5	5/5 minors or Majors

1	[1]	19-22 and any 4333 or 4432
?		this scheme is under revision (and then simultaneously of course Pass -1D-1NT)
Bid	HCP	REGRESsion Description -
Pass	0-3/4	any 4333/4432 OR 5+c and a bad minimum
2	0-7	5+ card	2= to play	2=max and 4c 2=max and 4c 2 = max and 1 Toph. 3= 2 Toph. 3 = max + 5c 3 = max + 5c 3 = max + 5c
			[2] = relay, suits me (see example)	2= minimum and no Toph. 2 = minimum and 1 Toph. 3= 2 Toph. 3 = max + 5c 3 = max + 5c 3 = max + 5c	3 = Stayman 3 = Stayman 3/ = 4card
2	0-7	5+ card	2= to play	2= max and 4c 2 = max and 1 Toph. 3= 2 Toph 3 = max + 5c 3 = max + 4c 3 = max + 5c	3 = 4c 3 = 4c
			[2] =relay, suits me	2= minimum and no Toph. OR a maximum \| helps.trial 3 = minimum and 1 Toph. \| 3 = to play 3= 2 Toph 3 = max + 5c or 5c \| 3 = relay 3 = max + 5c
2	0-7	5+ card	2= to play	2 = max and 1 Toph 3 = max + 5c . 3= 2 Toph 3 = max + 5c 3 = max + 4c 3 = max + 5c 3 = Max + 4c	3 = 4c
			[2] = relay, suits me	3= minimum and no Toph. or a maximum 3= minimum and 1 Toph 3 = 2 Toph. . 3! = max + 5cor 5c 3 = max and 4c	helps. trial (3 =) 3 = to play 3 =relay
2	4-7	4333/4432 4441 and asking for a min or max	2 = 19-20	scheme will follow anyway RR will describe!
			3 = 21-22	scheme will follow, anyway RR will describe!
2 3 3	0-5 5-7 5-7	6+ card (no 2 toph KQ or AQ) 5+ card max 5+ card 2 Toph.	3 = 4card M?, rest= good?

It could be that above schemes will alter. Practice will show.

- top -

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	[Pass]	1	1	Spiral Sc.	Suggested defence for opponents	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

•	eventual losses from lack of precision are small, as the game problem happens rather rarely. (although...)
•	better position vis-a-vis classical players, whose pass in this situation carries less information than a 1 in Weak Opening Systems
•	1 robs the opponent of one precious bid (f.e. 1 Precision, Polish Club) if the advantage of strength is theirs
•	the defensive apparatus of majority of players is less precise than their own system, so the advantage gained is great, as the 1 happens on every fourth hand
•	of course this advantage is balanced by the losses after penalty double, but as the opponents do not know anything about their hands, the risk is not so great.

Example of "solid" 7222 in the frame work of a 0-7 pointer 1 opening in 1st or 2nd seat
W	AQJxxxx	K	E
S/non	xx	AKxxx
xx		AQ
xx		AQJxx	rec.games 16th feb.2004

Example of precision in a 0-7 pointer 1 opening in 1st or 2nd seat
W	x	AKJxxx	E
S/non	Jxxxxxx	AKQ
xx		AQJx
xxx			club competition Jan 4, 2005

any shape 0-7 and no Ace + any King	[1]	[1]	13+ relay
0-5p. (no 0-3 extreme)	1	[1]	strongest relay
s/void	2	[2]	relay
L= and an 1-suiter (6331, 7321 or 7330)	3	[4]	relay
0-3p. (no King) and a 6331 or 7321	4	[4]	final distribution relay
« 1723 »	5	5}	SLam Asking Bid (you can bid 7 now*)
NO Queen	5	6}	Trump asking Bid
Jack, no Q	6	7
	Pass
* But you will need Jack if are 3-0 (then together with a 4card if not 3-3) Because of the 0-3 pointrange ànd knowing no any King, the SLAB-, SAB-, TAB-answers are dealing with the Queen/Jack(s) holdings. The 6} bid is the normal 3rd. step asking for the Trump suit, so just a "standard" procedure.

any shape 0-7 and no Ace + any King	[1]	[1]	13+ relay
6-7 balanced (according alternative A1) and the standard : minor, or now here:7222 with AQ or KQ or AQJxxxx	2	[2]	relay
any AQJxxxx	3	6	in the correct hand!
	Pass